/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/safe002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 21:47:44,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 21:47:44,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 21:47:44,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 21:47:44,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 21:47:44,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 21:47:44,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 21:47:44,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 21:47:44,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 21:47:44,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 21:47:44,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 21:47:44,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 21:47:44,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 21:47:44,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 21:47:44,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 21:47:44,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 21:47:44,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 21:47:44,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 21:47:44,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 21:47:44,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 21:47:44,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 21:47:44,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 21:47:44,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 21:47:44,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 21:47:44,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 21:47:44,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 21:47:44,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 21:47:44,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 21:47:44,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 21:47:44,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 21:47:44,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 21:47:44,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 21:47:44,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 21:47:44,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 21:47:44,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 21:47:44,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 21:47:44,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 21:47:44,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 21:47:44,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 21:47:44,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 21:47:44,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 21:47:44,922 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 21:47:44,959 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 21:47:44,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 21:47:44,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 21:47:44,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 21:47:44,963 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 21:47:44,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 21:47:44,964 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 21:47:44,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 21:47:44,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 21:47:44,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 21:47:44,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 21:47:44,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 21:47:44,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 21:47:44,965 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 21:47:44,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 21:47:44,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 21:47:44,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 21:47:44,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 21:47:44,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 21:47:44,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 21:47:44,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 21:47:44,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:47:44,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 21:47:44,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 21:47:44,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 21:47:44,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 21:47:44,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 21:47:44,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 21:47:44,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 21:47:45,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 21:47:45,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 21:47:45,262 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 21:47:45,263 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 21:47:45,264 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 21:47:45,264 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-04-17 21:47:45,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd13187de/31dde179120d424fa26ea626311ee5d2/FLAG51207f852 [2020-04-17 21:47:45,808 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 21:47:45,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-04-17 21:47:45,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd13187de/31dde179120d424fa26ea626311ee5d2/FLAG51207f852 [2020-04-17 21:47:46,098 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd13187de/31dde179120d424fa26ea626311ee5d2 [2020-04-17 21:47:46,107 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 21:47:46,124 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 21:47:46,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 21:47:46,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 21:47:46,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 21:47:46,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:47:46" (1/1) ... [2020-04-17 21:47:46,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18164ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:46, skipping insertion in model container [2020-04-17 21:47:46,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:47:46" (1/1) ... [2020-04-17 21:47:46,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 21:47:46,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 21:47:46,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:47:46,757 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 21:47:46,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:47:46,891 INFO L208 MainTranslator]: Completed translation [2020-04-17 21:47:46,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:46 WrapperNode [2020-04-17 21:47:46,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 21:47:46,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 21:47:46,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 21:47:46,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 21:47:46,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:46" (1/1) ... [2020-04-17 21:47:46,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:46" (1/1) ... [2020-04-17 21:47:46,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 21:47:46,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 21:47:46,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 21:47:46,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 21:47:46,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:46" (1/1) ... [2020-04-17 21:47:46,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:46" (1/1) ... [2020-04-17 21:47:46,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:46" (1/1) ... [2020-04-17 21:47:46,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:46" (1/1) ... [2020-04-17 21:47:46,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:46" (1/1) ... [2020-04-17 21:47:46,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:46" (1/1) ... [2020-04-17 21:47:46,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:46" (1/1) ... [2020-04-17 21:47:46,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 21:47:46,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 21:47:46,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 21:47:46,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 21:47:46,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:46" (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 21:47:47,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 21:47:47,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 21:47:47,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 21:47:47,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 21:47:47,034 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 21:47:47,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 21:47:47,034 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 21:47:47,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 21:47:47,034 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 21:47:47,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 21:47:47,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 21:47:47,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 21:47:47,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 21:47:47,041 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 21:47:47,475 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 21:47:47,475 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 21:47:47,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:47:47 BoogieIcfgContainer [2020-04-17 21:47:47,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 21:47:47,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 21:47:47,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 21:47:47,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 21:47:47,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 09:47:46" (1/3) ... [2020-04-17 21:47:47,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511f12f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:47:47, skipping insertion in model container [2020-04-17 21:47:47,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:47:46" (2/3) ... [2020-04-17 21:47:47,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511f12f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:47:47, skipping insertion in model container [2020-04-17 21:47:47,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:47:47" (3/3) ... [2020-04-17 21:47:47,495 INFO L109 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2020-04-17 21:47:47,507 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 21:47:47,508 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 21:47:47,516 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 21:47:47,518 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 21:47:47,549 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,550 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,550 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,551 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,551 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,551 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,552 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,552 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,553 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,553 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,553 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,554 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,554 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,554 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,555 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,555 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,555 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,556 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,560 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,560 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,561 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,561 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,567 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,568 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,568 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,568 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,571 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,571 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,571 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,572 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:47:47,591 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 21:47:47,614 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 21:47:47,615 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 21:47:47,615 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 21:47:47,615 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 21:47:47,615 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 21:47:47,615 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 21:47:47,616 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 21:47:47,617 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 21:47:47,635 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 21:47:47,637 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 21:47:47,684 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 21:47:47,684 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:47:47,689 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:47:47,692 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 21:47:47,713 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 21:47:47,714 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:47:47,715 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:47:47,718 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 21:47:47,722 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 21:47:49,438 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-17 21:47:49,613 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-04-17 21:47:49,700 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-17 21:47:49,700 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-17 21:47:49,706 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 21:47:49,750 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 21:47:49,752 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 21:47:49,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 21:47:49,763 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:49,765 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:49,765 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:49,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:49,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-17 21:47:49,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:49,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771596721] [2020-04-17 21:47:49,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:50,042 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 21:47:50,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771596721] [2020-04-17 21:47:50,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:50,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:47:50,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525085968] [2020-04-17 21:47:50,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:47:50,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:50,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:47:50,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:47:50,063 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 21:47:50,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:50,136 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-17 21:47:50,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:47:50,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 21:47:50,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:50,172 INFO L225 Difference]: With dead ends: 282 [2020-04-17 21:47:50,172 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 21:47:50,174 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 21:47:50,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 21:47:50,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 21:47:50,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 21:47:50,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-17 21:47:50,267 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-17 21:47:50,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:50,271 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-17 21:47:50,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:47:50,271 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-17 21:47:50,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 21:47:50,275 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:50,275 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:50,276 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:50,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:50,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1298976658, now seen corresponding path program 1 times [2020-04-17 21:47:50,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:50,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171994399] [2020-04-17 21:47:50,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:50,352 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 21:47:50,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171994399] [2020-04-17 21:47:50,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:50,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:47:50,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088390537] [2020-04-17 21:47:50,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:47:50,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:50,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:47:50,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:47:50,356 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-17 21:47:50,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:50,403 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-04-17 21:47:50,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:47:50,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 21:47:50,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:50,409 INFO L225 Difference]: With dead ends: 242 [2020-04-17 21:47:50,410 INFO L226 Difference]: Without dead ends: 146 [2020-04-17 21:47:50,411 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 21:47:50,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-17 21:47:50,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-17 21:47:50,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-17 21:47:50,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-17 21:47:50,434 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-04-17 21:47:50,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:50,434 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-17 21:47:50,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:47:50,435 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-17 21:47:50,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 21:47:50,437 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:50,437 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:50,437 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:50,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:50,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1379708097, now seen corresponding path program 1 times [2020-04-17 21:47:50,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:50,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800480997] [2020-04-17 21:47:50,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:50,532 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 21:47:50,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800480997] [2020-04-17 21:47:50,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:50,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:47:50,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794066394] [2020-04-17 21:47:50,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:47:50,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:50,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:47:50,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:47:50,534 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-04-17 21:47:50,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:50,546 INFO L93 Difference]: Finished difference Result 138 states and 336 transitions. [2020-04-17 21:47:50,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:47:50,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 21:47:50,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:50,548 INFO L225 Difference]: With dead ends: 138 [2020-04-17 21:47:50,548 INFO L226 Difference]: Without dead ends: 138 [2020-04-17 21:47:50,549 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 21:47:50,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-04-17 21:47:50,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-04-17 21:47:50,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-04-17 21:47:50,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 336 transitions. [2020-04-17 21:47:50,558 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 336 transitions. Word has length 11 [2020-04-17 21:47:50,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:50,559 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 336 transitions. [2020-04-17 21:47:50,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:47:50,559 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 336 transitions. [2020-04-17 21:47:50,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 21:47:50,561 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:50,561 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:50,562 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:50,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:50,563 INFO L82 PathProgramCache]: Analyzing trace with hash -178767453, now seen corresponding path program 1 times [2020-04-17 21:47:50,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:50,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459085693] [2020-04-17 21:47:50,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:50,627 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 21:47:50,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459085693] [2020-04-17 21:47:50,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:50,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:47:50,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794919520] [2020-04-17 21:47:50,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:47:50,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:50,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:47:50,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:47:50,629 INFO L87 Difference]: Start difference. First operand 138 states and 336 transitions. Second operand 3 states. [2020-04-17 21:47:50,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:50,641 INFO L93 Difference]: Finished difference Result 134 states and 324 transitions. [2020-04-17 21:47:50,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:47:50,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-17 21:47:50,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:50,645 INFO L225 Difference]: With dead ends: 134 [2020-04-17 21:47:50,645 INFO L226 Difference]: Without dead ends: 134 [2020-04-17 21:47:50,646 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 21:47:50,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-04-17 21:47:50,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-04-17 21:47:50,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-04-17 21:47:50,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-04-17 21:47:50,669 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 12 [2020-04-17 21:47:50,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:50,670 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-04-17 21:47:50,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:47:50,670 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-04-17 21:47:50,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:47:50,672 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:50,672 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:50,673 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:50,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:50,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1648184308, now seen corresponding path program 1 times [2020-04-17 21:47:50,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:50,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337313206] [2020-04-17 21:47:50,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:50,765 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 21:47:50,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337313206] [2020-04-17 21:47:50,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:50,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:47:50,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589870375] [2020-04-17 21:47:50,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:47:50,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:50,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:47:50,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:47:50,770 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand 4 states. [2020-04-17 21:47:50,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:50,796 INFO L93 Difference]: Finished difference Result 194 states and 466 transitions. [2020-04-17 21:47:50,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:47:50,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 21:47:50,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:50,797 INFO L225 Difference]: With dead ends: 194 [2020-04-17 21:47:50,797 INFO L226 Difference]: Without dead ends: 104 [2020-04-17 21:47:50,798 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 21:47:50,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-04-17 21:47:50,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-04-17 21:47:50,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-04-17 21:47:50,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-04-17 21:47:50,809 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 13 [2020-04-17 21:47:50,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:50,810 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-04-17 21:47:50,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:47:50,810 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-04-17 21:47:50,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:47:50,811 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:50,811 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:50,817 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:50,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:50,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1261556210, now seen corresponding path program 2 times [2020-04-17 21:47:50,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:50,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883824032] [2020-04-17 21:47:50,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:50,869 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 21:47:50,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883824032] [2020-04-17 21:47:50,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:50,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:47:50,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154323117] [2020-04-17 21:47:50,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:47:50,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:50,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:47:50,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:47:50,871 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-04-17 21:47:50,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:50,903 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2020-04-17 21:47:50,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:47:50,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 21:47:50,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:50,904 INFO L225 Difference]: With dead ends: 128 [2020-04-17 21:47:50,904 INFO L226 Difference]: Without dead ends: 68 [2020-04-17 21:47:50,905 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 21:47:50,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-04-17 21:47:50,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-04-17 21:47:50,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-04-17 21:47:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-04-17 21:47:50,916 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-04-17 21:47:50,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:50,917 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-04-17 21:47:50,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:47:50,917 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-04-17 21:47:50,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:47:50,919 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:50,920 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:50,920 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:50,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:50,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 3 times [2020-04-17 21:47:50,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:50,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985713888] [2020-04-17 21:47:50,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:50,998 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 21:47:50,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985713888] [2020-04-17 21:47:50,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:50,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:47:50,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092657345] [2020-04-17 21:47:50,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:47:51,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:51,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:47:51,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:47:51,000 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-04-17 21:47:51,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:51,038 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-04-17 21:47:51,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:47:51,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 21:47:51,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:51,040 INFO L225 Difference]: With dead ends: 81 [2020-04-17 21:47:51,041 INFO L226 Difference]: Without dead ends: 59 [2020-04-17 21:47:51,042 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 21:47:51,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-04-17 21:47:51,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-04-17 21:47:51,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-04-17 21:47:51,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-04-17 21:47:51,046 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-04-17 21:47:51,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:51,046 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-04-17 21:47:51,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:47:51,046 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-04-17 21:47:51,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 21:47:51,047 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:51,047 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:51,047 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:51,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:51,048 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-04-17 21:47:51,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:51,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985725535] [2020-04-17 21:47:51,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:51,094 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 21:47:51,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985725535] [2020-04-17 21:47:51,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:51,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:47:51,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265025375] [2020-04-17 21:47:51,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:47:51,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:51,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:47:51,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:47:51,096 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-04-17 21:47:51,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:51,154 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-04-17 21:47:51,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:47:51,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 21:47:51,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:51,155 INFO L225 Difference]: With dead ends: 60 [2020-04-17 21:47:51,155 INFO L226 Difference]: Without dead ends: 45 [2020-04-17 21:47:51,156 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 21:47:51,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-04-17 21:47:51,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-04-17 21:47:51,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-04-17 21:47:51,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-04-17 21:47:51,159 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-04-17 21:47:51,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:51,164 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-04-17 21:47:51,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:47:51,164 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-04-17 21:47:51,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 21:47:51,165 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:51,166 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:51,166 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:51,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:51,166 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-04-17 21:47:51,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:51,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154727177] [2020-04-17 21:47:51,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:51,267 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 21:47:51,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154727177] [2020-04-17 21:47:51,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:51,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 21:47:51,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892008133] [2020-04-17 21:47:51,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 21:47:51,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:51,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 21:47:51,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:47:51,273 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-04-17 21:47:51,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:51,340 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-04-17 21:47:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 21:47:51,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 21:47:51,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:51,342 INFO L225 Difference]: With dead ends: 42 [2020-04-17 21:47:51,342 INFO L226 Difference]: Without dead ends: 36 [2020-04-17 21:47:51,342 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 21:47:51,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-17 21:47:51,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-17 21:47:51,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-17 21:47:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-17 21:47:51,345 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-17 21:47:51,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:51,345 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-17 21:47:51,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 21:47:51,345 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-17 21:47:51,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 21:47:51,348 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:47:51,348 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:47:51,349 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:47:51,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:47:51,349 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-04-17 21:47:51,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:47:51,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001408745] [2020-04-17 21:47:51,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:47:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:47:51,409 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 21:47:51,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001408745] [2020-04-17 21:47:51,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:47:51,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:47:51,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127038879] [2020-04-17 21:47:51,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:47:51,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:47:51,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:47:51,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:47:51,411 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-04-17 21:47:51,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:47:51,422 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-17 21:47:51,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:47:51,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 21:47:51,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:47:51,423 INFO L225 Difference]: With dead ends: 35 [2020-04-17 21:47:51,423 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 21:47:51,423 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 21:47:51,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 21:47:51,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 21:47:51,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 21:47:51,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 21:47:51,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 21:47:51,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:47:51,425 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 21:47:51,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:47:51,425 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 21:47:51,425 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 21:47:51,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 09:47:51 BasicIcfg [2020-04-17 21:47:51,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 21:47:51,434 INFO L168 Benchmark]: Toolchain (without parser) took 5323.43 ms. Allocated memory was 140.0 MB in the beginning and 244.3 MB in the end (delta: 104.3 MB). Free memory was 103.4 MB in the beginning and 121.7 MB in the end (delta: -18.2 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. [2020-04-17 21:47:51,435 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-17 21:47:51,440 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.86 ms. Allocated memory was 140.0 MB in the beginning and 206.6 MB in the end (delta: 66.6 MB). Free memory was 101.4 MB in the beginning and 161.4 MB in the end (delta: -60.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-04-17 21:47:51,441 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.08 ms. Allocated memory is still 206.6 MB. Free memory was 161.4 MB in the beginning and 159.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 21:47:51,442 INFO L168 Benchmark]: Boogie Preprocessor took 28.08 ms. Allocated memory is still 206.6 MB. Free memory was 159.4 MB in the beginning and 158.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 21:47:51,443 INFO L168 Benchmark]: RCFGBuilder took 509.81 ms. Allocated memory is still 206.6 MB. Free memory was 157.4 MB in the beginning and 135.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-17 21:47:51,448 INFO L168 Benchmark]: TraceAbstraction took 3949.14 ms. Allocated memory was 206.6 MB in the beginning and 244.3 MB in the end (delta: 37.7 MB). Free memory was 135.1 MB in the beginning and 121.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. [2020-04-17 21:47:51,456 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 765.86 ms. Allocated memory was 140.0 MB in the beginning and 206.6 MB in the end (delta: 66.6 MB). Free memory was 101.4 MB in the beginning and 161.4 MB in the end (delta: -60.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.08 ms. Allocated memory is still 206.6 MB. Free memory was 161.4 MB in the beginning and 159.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.08 ms. Allocated memory is still 206.6 MB. Free memory was 159.4 MB in the beginning and 158.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 509.81 ms. Allocated memory is still 206.6 MB. Free memory was 157.4 MB in the beginning and 135.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3949.14 ms. Allocated memory was 206.6 MB in the beginning and 244.3 MB in the end (delta: 37.7 MB). Free memory was 135.1 MB in the beginning and 121.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 669 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 180 SDtfs, 139 SDslu, 191 SDs, 0 SdLazy, 122 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 3881 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...