/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/safe031_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:30:16,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:30:16,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:30:16,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:30:16,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:30:16,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:30:16,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:30:16,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:30:16,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:30:16,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:30:16,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:30:16,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:30:16,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:30:16,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:30:16,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:30:16,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:30:16,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:30:16,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:30:16,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:30:16,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:30:16,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:30:16,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:30:16,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:30:16,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:30:16,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:30:16,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:30:16,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:30:16,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:30:16,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:30:16,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:30:16,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:30:16,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:30:16,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:30:16,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:30:16,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:30:16,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:30:16,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:30:16,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:30:16,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:30:16,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:30:16,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:30:16,769 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 22:30:16,782 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:30:16,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:30:16,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:30:16,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:30:16,784 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:30:16,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:30:16,784 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:30:16,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:30:16,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:30:16,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:30:16,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:30:16,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:30:16,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:30:16,786 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:30:16,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:30:16,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:30:16,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:30:16,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:30:16,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:30:16,787 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:30:16,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:30:16,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:30:16,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:30:16,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:30:16,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:30:16,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:30:16,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:30:16,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:30:16,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:30:17,057 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:30:17,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:30:17,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:30:17,077 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:30:17,078 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:30:17,078 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-04-17 22:30:17,137 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c91eaf04/a3e1e0b9b4e242bd97cc345448af4146/FLAG7456ab41e [2020-04-17 22:30:17,643 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:30:17,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-04-17 22:30:17,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c91eaf04/a3e1e0b9b4e242bd97cc345448af4146/FLAG7456ab41e [2020-04-17 22:30:17,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c91eaf04/a3e1e0b9b4e242bd97cc345448af4146 [2020-04-17 22:30:17,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:30:17,989 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:30:17,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:30:17,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:30:17,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:30:17,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:30:17" (1/1) ... [2020-04-17 22:30:17,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@471e8602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:30:17, skipping insertion in model container [2020-04-17 22:30:17,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:30:17" (1/1) ... [2020-04-17 22:30:18,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:30:18,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:30:18,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:30:18,600 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:30:18,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:30:18,778 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:30:18,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:30:18 WrapperNode [2020-04-17 22:30:18,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:30:18,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:30:18,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:30:18,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:30:18,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:30:18" (1/1) ... [2020-04-17 22:30:18,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:30:18" (1/1) ... [2020-04-17 22:30:18,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:30:18,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:30:18,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:30:18,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:30:18,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:30:18" (1/1) ... [2020-04-17 22:30:18,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:30:18" (1/1) ... [2020-04-17 22:30:18,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:30:18" (1/1) ... [2020-04-17 22:30:18,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:30:18" (1/1) ... [2020-04-17 22:30:18,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:30:18" (1/1) ... [2020-04-17 22:30:18,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:30:18" (1/1) ... [2020-04-17 22:30:18,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:30:18" (1/1) ... [2020-04-17 22:30:18,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:30:18,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:30:18,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:30:18,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:30:18,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:30:18" (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 22:30:18,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:30:18,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:30:18,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:30:18,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:30:18,928 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:30:18,928 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:30:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:30:18,929 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:30:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:30:18,929 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:30:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:30:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:30:18,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:30:18,931 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 22:30:19,304 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:30:19,305 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:30:19,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:30:19 BoogieIcfgContainer [2020-04-17 22:30:19,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:30:19,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:30:19,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:30:19,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:30:19,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:30:17" (1/3) ... [2020-04-17 22:30:19,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435b1cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:30:19, skipping insertion in model container [2020-04-17 22:30:19,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:30:18" (2/3) ... [2020-04-17 22:30:19,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435b1cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:30:19, skipping insertion in model container [2020-04-17 22:30:19,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:30:19" (3/3) ... [2020-04-17 22:30:19,318 INFO L109 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2020-04-17 22:30:19,328 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:30:19,328 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:30:19,335 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:30:19,336 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:30:19,359 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,359 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,360 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,360 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,361 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,361 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,361 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,362 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,362 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,362 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,362 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,363 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,363 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,363 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,364 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,364 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,364 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,365 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,368 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,369 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,369 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,369 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,375 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,376 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,376 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,376 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,378 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,379 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,379 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,379 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:30:19,395 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:30:19,413 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:30:19,413 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:30:19,414 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:30:19,414 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:30:19,414 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:30:19,414 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:30:19,414 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:30:19,414 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:30:19,430 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-17 22:30:19,432 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 22:30:19,473 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 22:30:19,474 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:30:19,481 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 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. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:30:19,485 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-17 22:30:19,506 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-17 22:30:19,507 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:30:19,507 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 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. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:30:19,509 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:30:19,510 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:30:20,872 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-17 22:30:21,226 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2238 [2020-04-17 22:30:21,227 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-04-17 22:30:21,230 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-17 22:30:21,255 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 22:30:21,257 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 22:30:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:30:21,264 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:30:21,265 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:30:21,265 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:30:21,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:30:21,271 INFO L82 PathProgramCache]: Analyzing trace with hash -389059823, now seen corresponding path program 1 times [2020-04-17 22:30:21,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:30:21,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239867820] [2020-04-17 22:30:21,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:30:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:30:21,471 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 22:30:21,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239867820] [2020-04-17 22:30:21,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:30:21,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:30:21,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666191879] [2020-04-17 22:30:21,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:30:21,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:30:21,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:30:21,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:30:21,498 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 22:30:21,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:30:21,574 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-04-17 22:30:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:30:21,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 22:30:21,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:30:21,605 INFO L225 Difference]: With dead ends: 290 [2020-04-17 22:30:21,606 INFO L226 Difference]: Without dead ends: 226 [2020-04-17 22:30:21,608 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 22:30:21,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-17 22:30:21,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-17 22:30:21,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-17 22:30:21,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-04-17 22:30:21,705 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-04-17 22:30:21,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:30:21,706 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-04-17 22:30:21,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:30:21,706 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-04-17 22:30:21,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:30:21,708 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:30:21,708 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:30:21,709 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:30:21,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:30:21,709 INFO L82 PathProgramCache]: Analyzing trace with hash 824029864, now seen corresponding path program 1 times [2020-04-17 22:30:21,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:30:21,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366268250] [2020-04-17 22:30:21,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:30:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:30:21,801 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 22:30:21,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366268250] [2020-04-17 22:30:21,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:30:21,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:30:21,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675473080] [2020-04-17 22:30:21,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:30:21,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:30:21,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:30:21,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:30:21,804 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-04-17 22:30:21,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:30:21,827 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-04-17 22:30:21,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:30:21,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 22:30:21,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:30:21,831 INFO L225 Difference]: With dead ends: 220 [2020-04-17 22:30:21,831 INFO L226 Difference]: Without dead ends: 220 [2020-04-17 22:30:21,832 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 22:30:21,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-04-17 22:30:21,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-04-17 22:30:21,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-04-17 22:30:21,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-04-17 22:30:21,860 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-04-17 22:30:21,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:30:21,861 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-04-17 22:30:21,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:30:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-04-17 22:30:21,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:30:21,862 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:30:21,862 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:30:21,863 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:30:21,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:30:21,863 INFO L82 PathProgramCache]: Analyzing trace with hash -224925294, now seen corresponding path program 1 times [2020-04-17 22:30:21,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:30:21,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812188668] [2020-04-17 22:30:21,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:30:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:30:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:30:21,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812188668] [2020-04-17 22:30:21,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:30:21,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:30:21,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323162759] [2020-04-17 22:30:21,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:30:21,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:30:21,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:30:21,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:30:21,985 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 4 states. [2020-04-17 22:30:22,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:30:22,034 INFO L93 Difference]: Finished difference Result 240 states and 599 transitions. [2020-04-17 22:30:22,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:30:22,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-17 22:30:22,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:30:22,037 INFO L225 Difference]: With dead ends: 240 [2020-04-17 22:30:22,037 INFO L226 Difference]: Without dead ends: 176 [2020-04-17 22:30:22,038 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 22:30:22,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-04-17 22:30:22,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-04-17 22:30:22,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-04-17 22:30:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 428 transitions. [2020-04-17 22:30:22,060 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 428 transitions. Word has length 10 [2020-04-17 22:30:22,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:30:22,061 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 428 transitions. [2020-04-17 22:30:22,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:30:22,061 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 428 transitions. [2020-04-17 22:30:22,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:30:22,063 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:30:22,063 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:30:22,064 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:30:22,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:30:22,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1617246421, now seen corresponding path program 1 times [2020-04-17 22:30:22,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:30:22,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953384229] [2020-04-17 22:30:22,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:30:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:30:22,133 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 22:30:22,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953384229] [2020-04-17 22:30:22,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:30:22,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:30:22,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176546588] [2020-04-17 22:30:22,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:30:22,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:30:22,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:30:22,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:30:22,135 INFO L87 Difference]: Start difference. First operand 176 states and 428 transitions. Second operand 3 states. [2020-04-17 22:30:22,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:30:22,145 INFO L93 Difference]: Finished difference Result 225 states and 522 transitions. [2020-04-17 22:30:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:30:22,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 22:30:22,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:30:22,147 INFO L225 Difference]: With dead ends: 225 [2020-04-17 22:30:22,148 INFO L226 Difference]: Without dead ends: 183 [2020-04-17 22:30:22,148 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 22:30:22,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-04-17 22:30:22,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2020-04-17 22:30:22,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-04-17 22:30:22,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 396 transitions. [2020-04-17 22:30:22,169 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 396 transitions. Word has length 11 [2020-04-17 22:30:22,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:30:22,169 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 396 transitions. [2020-04-17 22:30:22,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:30:22,169 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 396 transitions. [2020-04-17 22:30:22,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:30:22,171 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:30:22,171 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:30:22,174 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:30:22,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:30:22,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1444727206, now seen corresponding path program 1 times [2020-04-17 22:30:22,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:30:22,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973294987] [2020-04-17 22:30:22,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:30:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:30:22,286 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 22:30:22,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973294987] [2020-04-17 22:30:22,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:30:22,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:30:22,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334846659] [2020-04-17 22:30:22,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:30:22,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:30:22,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:30:22,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:30:22,292 INFO L87 Difference]: Start difference. First operand 171 states and 396 transitions. Second operand 5 states. [2020-04-17 22:30:22,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:30:22,347 INFO L93 Difference]: Finished difference Result 162 states and 347 transitions. [2020-04-17 22:30:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:30:22,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-17 22:30:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:30:22,349 INFO L225 Difference]: With dead ends: 162 [2020-04-17 22:30:22,349 INFO L226 Difference]: Without dead ends: 125 [2020-04-17 22:30:22,351 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 22:30:22,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-17 22:30:22,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-17 22:30:22,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-17 22:30:22,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 263 transitions. [2020-04-17 22:30:22,358 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 263 transitions. Word has length 12 [2020-04-17 22:30:22,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:30:22,358 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 263 transitions. [2020-04-17 22:30:22,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:30:22,359 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 263 transitions. [2020-04-17 22:30:22,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:30:22,365 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:30:22,365 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:30:22,365 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:30:22,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:30:22,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1109140729, now seen corresponding path program 1 times [2020-04-17 22:30:22,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:30:22,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937898653] [2020-04-17 22:30:22,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:30:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:30:22,390 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 22:30:22,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937898653] [2020-04-17 22:30:22,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:30:22,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:30:22,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133617435] [2020-04-17 22:30:22,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:30:22,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:30:22,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:30:22,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:30:22,393 INFO L87 Difference]: Start difference. First operand 125 states and 263 transitions. Second operand 3 states. [2020-04-17 22:30:22,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:30:22,400 INFO L93 Difference]: Finished difference Result 157 states and 314 transitions. [2020-04-17 22:30:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:30:22,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-17 22:30:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:30:22,402 INFO L225 Difference]: With dead ends: 157 [2020-04-17 22:30:22,402 INFO L226 Difference]: Without dead ends: 120 [2020-04-17 22:30:22,403 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 22:30:22,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-04-17 22:30:22,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-04-17 22:30:22,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-04-17 22:30:22,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 233 transitions. [2020-04-17 22:30:22,407 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 233 transitions. Word has length 14 [2020-04-17 22:30:22,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:30:22,407 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 233 transitions. [2020-04-17 22:30:22,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:30:22,408 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 233 transitions. [2020-04-17 22:30:22,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:30:22,408 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:30:22,409 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:30:22,409 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:30:22,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:30:22,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1574578981, now seen corresponding path program 1 times [2020-04-17 22:30:22,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:30:22,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351580154] [2020-04-17 22:30:22,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:30:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:30:22,553 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 22:30:22,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351580154] [2020-04-17 22:30:22,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:30:22,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:30:22,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829577818] [2020-04-17 22:30:22,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:30:22,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:30:22,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:30:22,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:30:22,557 INFO L87 Difference]: Start difference. First operand 118 states and 233 transitions. Second operand 6 states. [2020-04-17 22:30:22,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:30:22,613 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2020-04-17 22:30:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:30:22,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 22:30:22,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:30:22,614 INFO L225 Difference]: With dead ends: 112 [2020-04-17 22:30:22,614 INFO L226 Difference]: Without dead ends: 36 [2020-04-17 22:30:22,614 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 22:30:22,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-17 22:30:22,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-17 22:30:22,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-17 22:30:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-17 22:30:22,616 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 14 [2020-04-17 22:30:22,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:30:22,617 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-17 22:30:22,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:30:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-17 22:30:22,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:30:22,618 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:30:22,619 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 22:30:22,619 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:30:22,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:30:22,619 INFO L82 PathProgramCache]: Analyzing trace with hash 16794271, now seen corresponding path program 1 times [2020-04-17 22:30:22,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:30:22,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958790786] [2020-04-17 22:30:22,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:30:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:30:22,675 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 22:30:22,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958790786] [2020-04-17 22:30:22,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:30:22,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:30:22,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253929682] [2020-04-17 22:30:22,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:30:22,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:30:22,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:30:22,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:30:22,677 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-04-17 22:30:22,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:30:22,689 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-17 22:30:22,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:30:22,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:30:22,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:30:22,690 INFO L225 Difference]: With dead ends: 35 [2020-04-17 22:30:22,690 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:30:22,691 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 22:30:22,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:30:22,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:30:22,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:30:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:30:22,691 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 22:30:22,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:30:22,692 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:30:22,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:30:22,692 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:30:22,692 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:30:22,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:30:22 BasicIcfg [2020-04-17 22:30:22,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:30:22,703 INFO L168 Benchmark]: Toolchain (without parser) took 4731.31 ms. Allocated memory was 136.3 MB in the beginning and 252.2 MB in the end (delta: 115.9 MB). Free memory was 98.6 MB in the beginning and 195.7 MB in the end (delta: -97.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2020-04-17 22:30:22,704 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 136.3 MB. Free memory is still 117.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 22:30:22,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 789.85 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 96.9 MB in the beginning and 156.1 MB in the end (delta: -59.2 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-04-17 22:30:22,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.58 ms. Allocated memory is still 200.3 MB. Free memory was 156.1 MB in the beginning and 154.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:30:22,708 INFO L168 Benchmark]: Boogie Preprocessor took 26.59 ms. Allocated memory is still 200.3 MB. Free memory was 153.0 MB in the beginning and 152.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:30:22,710 INFO L168 Benchmark]: RCFGBuilder took 433.60 ms. Allocated memory is still 200.3 MB. Free memory was 152.0 MB in the beginning and 130.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-17 22:30:22,711 INFO L168 Benchmark]: TraceAbstraction took 3385.81 ms. Allocated memory was 200.3 MB in the beginning and 252.2 MB in the end (delta: 51.9 MB). Free memory was 129.4 MB in the beginning and 195.7 MB in the end (delta: -66.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 22:30:22,717 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 136.3 MB. Free memory is still 117.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 789.85 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 96.9 MB in the beginning and 156.1 MB in the end (delta: -59.2 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 68.58 ms. Allocated memory is still 200.3 MB. Free memory was 156.1 MB in the beginning and 154.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.59 ms. Allocated memory is still 200.3 MB. Free memory was 153.0 MB in the beginning and 152.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.60 ms. Allocated memory is still 200.3 MB. Free memory was 152.0 MB in the beginning and 130.4 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3385.81 ms. Allocated memory was 200.3 MB in the beginning and 252.2 MB in the end (delta: 51.9 MB). Free memory was 129.4 MB in the beginning and 195.7 MB in the end (delta: -66.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 665 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 14 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2238 CheckedPairsTotal, 55 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 157 SDtfs, 114 SDslu, 178 SDs, 0 SdLazy, 97 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 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, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2531 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...