/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/safe005_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 21:53:11,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 21:53:11,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 21:53:11,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 21:53:11,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 21:53:11,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 21:53:11,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 21:53:11,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 21:53:11,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 21:53:11,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 21:53:11,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 21:53:11,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 21:53:11,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 21:53:11,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 21:53:11,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 21:53:11,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 21:53:11,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 21:53:11,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 21:53:11,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 21:53:11,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 21:53:11,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 21:53:11,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 21:53:11,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 21:53:11,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 21:53:11,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 21:53:11,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 21:53:11,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 21:53:11,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 21:53:11,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 21:53:11,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 21:53:11,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 21:53:11,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 21:53:11,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 21:53:11,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 21:53:11,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 21:53:11,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 21:53:11,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 21:53:11,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 21:53:11,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 21:53:11,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 21:53:11,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 21:53:11,588 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 21:53:11,602 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 21:53:11,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 21:53:11,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 21:53:11,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 21:53:11,604 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 21:53:11,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 21:53:11,605 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 21:53:11,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 21:53:11,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 21:53:11,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 21:53:11,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 21:53:11,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 21:53:11,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 21:53:11,606 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 21:53:11,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 21:53:11,606 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 21:53:11,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 21:53:11,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 21:53:11,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 21:53:11,607 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 21:53:11,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 21:53:11,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:53:11,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 21:53:11,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 21:53:11,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 21:53:11,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 21:53:11,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 21:53:11,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 21:53:11,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 21:53:11,908 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 21:53:11,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 21:53:11,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 21:53:11,934 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 21:53:11,935 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 21:53:11,936 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-04-17 21:53:12,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/694c747ef/d3dbc611977740d9be090f065c5a77b4/FLAG0b4d0b05c [2020-04-17 21:53:12,585 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 21:53:12,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-04-17 21:53:12,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/694c747ef/d3dbc611977740d9be090f065c5a77b4/FLAG0b4d0b05c [2020-04-17 21:53:12,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/694c747ef/d3dbc611977740d9be090f065c5a77b4 [2020-04-17 21:53:12,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 21:53:12,924 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 21:53:12,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 21:53:12,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 21:53:12,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 21:53:12,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:53:12" (1/1) ... [2020-04-17 21:53:12,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a9b8fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:12, skipping insertion in model container [2020-04-17 21:53:12,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:53:12" (1/1) ... [2020-04-17 21:53:12,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 21:53:12,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 21:53:13,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:53:13,542 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 21:53:13,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:53:13,709 INFO L208 MainTranslator]: Completed translation [2020-04-17 21:53:13,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:13 WrapperNode [2020-04-17 21:53:13,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 21:53:13,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 21:53:13,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 21:53:13,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 21:53:13,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:13" (1/1) ... [2020-04-17 21:53:13,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:13" (1/1) ... [2020-04-17 21:53:13,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 21:53:13,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 21:53:13,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 21:53:13,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 21:53:13,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:13" (1/1) ... [2020-04-17 21:53:13,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:13" (1/1) ... [2020-04-17 21:53:13,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:13" (1/1) ... [2020-04-17 21:53:13,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:13" (1/1) ... [2020-04-17 21:53:13,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:13" (1/1) ... [2020-04-17 21:53:13,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:13" (1/1) ... [2020-04-17 21:53:13,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:13" (1/1) ... [2020-04-17 21:53:13,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 21:53:13,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 21:53:13,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 21:53:13,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 21:53:13,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:13" (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 21:53:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 21:53:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 21:53:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 21:53:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 21:53:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 21:53:13,919 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 21:53:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 21:53:13,920 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 21:53:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 21:53:13,920 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 21:53:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 21:53:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 21:53:13,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 21:53:13,922 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 21:53:14,295 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 21:53:14,296 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 21:53:14,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:53:14 BoogieIcfgContainer [2020-04-17 21:53:14,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 21:53:14,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 21:53:14,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 21:53:14,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 21:53:14,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 09:53:12" (1/3) ... [2020-04-17 21:53:14,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18eab3c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:53:14, skipping insertion in model container [2020-04-17 21:53:14,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:53:13" (2/3) ... [2020-04-17 21:53:14,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18eab3c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:53:14, skipping insertion in model container [2020-04-17 21:53:14,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:53:14" (3/3) ... [2020-04-17 21:53:14,308 INFO L109 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt.i [2020-04-17 21:53:14,318 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 21:53:14,318 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 21:53:14,324 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 21:53:14,325 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 21:53:14,350 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,350 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,351 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,351 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,351 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,351 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,352 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,352 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,352 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,353 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,353 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,353 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,354 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,354 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,354 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,354 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,355 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,355 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,359 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,359 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,360 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,360 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,365 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,366 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,366 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,366 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,374 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,374 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,375 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,375 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:53:14,388 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 21:53:14,404 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 21:53:14,404 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 21:53:14,404 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 21:53:14,405 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 21:53:14,405 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 21:53:14,405 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 21:53:14,405 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 21:53:14,405 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 21:53:14,419 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 21:53:14,421 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 21:53:14,460 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 21:53:14,460 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:53:14,465 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 51 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 21:53:14,468 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 21:53:14,489 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 21:53:14,490 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:53:14,490 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 51 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 21:53:14,493 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 21:53:14,494 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 21:53:16,403 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-17 21:53:16,403 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-17 21:53:16,407 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 21:53:16,434 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 21:53:16,436 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 21:53:16,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 21:53:16,445 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:53:16,446 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:53:16,446 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:53:16,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:53:16,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-17 21:53:16,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:53:16,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631695230] [2020-04-17 21:53:16,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:53:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:53:16,729 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 21:53:16,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631695230] [2020-04-17 21:53:16,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:53:16,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 21:53:16,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711212041] [2020-04-17 21:53:16,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:53:16,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:53:16,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:53:16,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:53:16,757 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 21:53:16,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:53:16,809 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-04-17 21:53:16,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:53:16,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 21:53:16,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:53:16,826 INFO L225 Difference]: With dead ends: 266 [2020-04-17 21:53:16,827 INFO L226 Difference]: Without dead ends: 202 [2020-04-17 21:53:16,828 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 21:53:16,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-17 21:53:16,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-17 21:53:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-17 21:53:16,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-17 21:53:16,900 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-04-17 21:53:16,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:53:16,901 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-17 21:53:16,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:53:16,902 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-17 21:53:16,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 21:53:16,903 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:53:16,904 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:53:16,904 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:53:16,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:53:16,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1603389483, now seen corresponding path program 1 times [2020-04-17 21:53:16,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:53:16,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013820117] [2020-04-17 21:53:16,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:53:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:53:17,004 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 21:53:17,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013820117] [2020-04-17 21:53:17,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:53:17,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:53:17,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482289487] [2020-04-17 21:53:17,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:53:17,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:53:17,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:53:17,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:53:17,011 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-04-17 21:53:17,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:53:17,068 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-04-17 21:53:17,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:53:17,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-17 21:53:17,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:53:17,077 INFO L225 Difference]: With dead ends: 254 [2020-04-17 21:53:17,077 INFO L226 Difference]: Without dead ends: 190 [2020-04-17 21:53:17,078 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 21:53:17,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-04-17 21:53:17,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-04-17 21:53:17,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-04-17 21:53:17,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-04-17 21:53:17,118 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-04-17 21:53:17,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:53:17,118 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-04-17 21:53:17,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:53:17,119 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-04-17 21:53:17,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 21:53:17,120 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:53:17,120 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:53:17,121 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:53:17,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:53:17,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1533986257, now seen corresponding path program 1 times [2020-04-17 21:53:17,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:53:17,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102535747] [2020-04-17 21:53:17,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:53:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:53:17,183 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 21:53:17,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102535747] [2020-04-17 21:53:17,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:53:17,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:53:17,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637569100] [2020-04-17 21:53:17,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:53:17,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:53:17,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:53:17,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:53:17,186 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-04-17 21:53:17,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:53:17,222 INFO L93 Difference]: Finished difference Result 262 states and 670 transitions. [2020-04-17 21:53:17,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:53:17,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 21:53:17,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:53:17,225 INFO L225 Difference]: With dead ends: 262 [2020-04-17 21:53:17,225 INFO L226 Difference]: Without dead ends: 202 [2020-04-17 21:53:17,225 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:53:17,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-17 21:53:17,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 178. [2020-04-17 21:53:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-04-17 21:53:17,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 452 transitions. [2020-04-17 21:53:17,247 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 452 transitions. Word has length 11 [2020-04-17 21:53:17,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:53:17,248 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 452 transitions. [2020-04-17 21:53:17,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:53:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 452 transitions. [2020-04-17 21:53:17,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 21:53:17,253 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:53:17,253 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:53:17,253 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:53:17,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:53:17,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1026948662, now seen corresponding path program 1 times [2020-04-17 21:53:17,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:53:17,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589178639] [2020-04-17 21:53:17,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:53:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:53:17,333 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 21:53:17,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589178639] [2020-04-17 21:53:17,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:53:17,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:53:17,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977785783] [2020-04-17 21:53:17,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 21:53:17,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:53:17,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 21:53:17,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 21:53:17,338 INFO L87 Difference]: Start difference. First operand 178 states and 452 transitions. Second operand 3 states. [2020-04-17 21:53:17,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:53:17,356 INFO L93 Difference]: Finished difference Result 198 states and 492 transitions. [2020-04-17 21:53:17,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 21:53:17,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-17 21:53:17,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:53:17,357 INFO L225 Difference]: With dead ends: 198 [2020-04-17 21:53:17,357 INFO L226 Difference]: Without dead ends: 72 [2020-04-17 21:53:17,358 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 21:53:17,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-04-17 21:53:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-04-17 21:53:17,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-04-17 21:53:17,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-04-17 21:53:17,362 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-04-17 21:53:17,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:53:17,362 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-04-17 21:53:17,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 21:53:17,363 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-04-17 21:53:17,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:53:17,364 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:53:17,364 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:53:17,364 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:53:17,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:53:17,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1770638686, now seen corresponding path program 1 times [2020-04-17 21:53:17,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:53:17,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339155633] [2020-04-17 21:53:17,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:53:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:53:17,443 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 21:53:17,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339155633] [2020-04-17 21:53:17,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:53:17,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:53:17,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236641491] [2020-04-17 21:53:17,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:53:17,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:53:17,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:53:17,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:53:17,447 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 4 states. [2020-04-17 21:53:17,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:53:17,491 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2020-04-17 21:53:17,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:53:17,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 21:53:17,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:53:17,493 INFO L225 Difference]: With dead ends: 85 [2020-04-17 21:53:17,493 INFO L226 Difference]: Without dead ends: 61 [2020-04-17 21:53:17,493 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 21:53:17,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-04-17 21:53:17,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-04-17 21:53:17,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-04-17 21:53:17,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 118 transitions. [2020-04-17 21:53:17,503 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 118 transitions. Word has length 13 [2020-04-17 21:53:17,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:53:17,507 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 118 transitions. [2020-04-17 21:53:17,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:53:17,508 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 118 transitions. [2020-04-17 21:53:17,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 21:53:17,508 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:53:17,509 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:53:17,510 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:53:17,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:53:17,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1873051802, now seen corresponding path program 1 times [2020-04-17 21:53:17,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:53:17,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806515153] [2020-04-17 21:53:17,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:53:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:53:17,613 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 21:53:17,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806515153] [2020-04-17 21:53:17,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:53:17,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:53:17,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949544623] [2020-04-17 21:53:17,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:53:17,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:53:17,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:53:17,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:53:17,617 INFO L87 Difference]: Start difference. First operand 61 states and 118 transitions. Second operand 5 states. [2020-04-17 21:53:17,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:53:17,671 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-04-17 21:53:17,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:53:17,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 21:53:17,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:53:17,672 INFO L225 Difference]: With dead ends: 62 [2020-04-17 21:53:17,673 INFO L226 Difference]: Without dead ends: 47 [2020-04-17 21:53:17,673 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 21:53:17,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-04-17 21:53:17,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-04-17 21:53:17,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-04-17 21:53:17,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-04-17 21:53:17,693 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-04-17 21:53:17,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:53:17,694 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-04-17 21:53:17,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:53:17,694 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-04-17 21:53:17,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 21:53:17,695 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:53:17,695 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:53:17,695 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:53:17,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:53:17,696 INFO L82 PathProgramCache]: Analyzing trace with hash 877737129, now seen corresponding path program 1 times [2020-04-17 21:53:17,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:53:17,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469856451] [2020-04-17 21:53:17,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:53:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:53:17,757 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 21:53:17,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469856451] [2020-04-17 21:53:17,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:53:17,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 21:53:17,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108180679] [2020-04-17 21:53:17,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 21:53:17,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:53:17,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 21:53:17,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:53:17,759 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-04-17 21:53:17,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:53:17,818 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-04-17 21:53:17,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 21:53:17,818 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 21:53:17,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:53:17,819 INFO L225 Difference]: With dead ends: 44 [2020-04-17 21:53:17,819 INFO L226 Difference]: Without dead ends: 38 [2020-04-17 21:53:17,820 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 21:53:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-17 21:53:17,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-17 21:53:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-17 21:53:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-04-17 21:53:17,828 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-04-17 21:53:17,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:53:17,829 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-04-17 21:53:17,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 21:53:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-04-17 21:53:17,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 21:53:17,833 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:53:17,833 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 21:53:17,834 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:53:17,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:53:17,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 1 times [2020-04-17 21:53:17,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:53:17,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181305869] [2020-04-17 21:53:17,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:53:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:53:17,915 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 21:53:17,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181305869] [2020-04-17 21:53:17,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:53:17,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:53:17,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325997649] [2020-04-17 21:53:17,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:53:17,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:53:17,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:53:17,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:53:17,918 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 4 states. [2020-04-17 21:53:17,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:53:17,934 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-04-17 21:53:17,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 21:53:17,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 21:53:17,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:53:17,934 INFO L225 Difference]: With dead ends: 37 [2020-04-17 21:53:17,934 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 21:53:17,935 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 21:53:17,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 21:53:17,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 21:53:17,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 21:53:17,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 21:53:17,937 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 21:53:17,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:53:17,937 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 21:53:17,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:53:17,937 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 21:53:17,937 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 21:53:17,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 09:53:17 BasicIcfg [2020-04-17 21:53:17,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 21:53:17,950 INFO L168 Benchmark]: Toolchain (without parser) took 5041.12 ms. Allocated memory was 135.3 MB in the beginning and 255.3 MB in the end (delta: 120.1 MB). Free memory was 98.2 MB in the beginning and 196.2 MB in the end (delta: -98.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-17 21:53:17,951 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 135.3 MB. Free memory is still 118.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 21:53:17,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.84 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 95.9 MB in the beginning and 154.0 MB in the end (delta: -58.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-04-17 21:53:17,953 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.02 ms. Allocated memory is still 199.8 MB. Free memory was 154.0 MB in the beginning and 151.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-17 21:53:17,954 INFO L168 Benchmark]: Boogie Preprocessor took 58.07 ms. Allocated memory is still 199.8 MB. Free memory was 151.9 MB in the beginning and 150.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. [2020-04-17 21:53:17,960 INFO L168 Benchmark]: RCFGBuilder took 451.81 ms. Allocated memory is still 199.8 MB. Free memory was 150.8 MB in the beginning and 128.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-04-17 21:53:17,961 INFO L168 Benchmark]: TraceAbstraction took 3640.92 ms. Allocated memory was 199.8 MB in the beginning and 255.3 MB in the end (delta: 55.6 MB). Free memory was 128.3 MB in the beginning and 196.2 MB in the end (delta: -67.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 21:53:17,968 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 135.3 MB. Free memory is still 118.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 784.84 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 95.9 MB in the beginning and 154.0 MB in the end (delta: -58.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 79.02 ms. Allocated memory is still 199.8 MB. Free memory was 154.0 MB in the beginning and 151.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.07 ms. Allocated memory is still 199.8 MB. Free memory was 151.9 MB in the beginning and 150.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 451.81 ms. Allocated memory is still 199.8 MB. Free memory was 150.8 MB in the beginning and 128.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3640.92 ms. Allocated memory was 199.8 MB in the beginning and 255.3 MB in the end (delta: 55.6 MB). Free memory was 128.3 MB in the beginning and 196.2 MB in the end (delta: -67.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 679 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 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: 3.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 158 SDtfs, 118 SDslu, 158 SDs, 0 SdLazy, 116 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 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, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 2980 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...