/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/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:18:12,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:18:12,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:18:12,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:18:12,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:18:12,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:18:12,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:18:12,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:18:12,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:18:12,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:18:12,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:18:12,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:18:12,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:18:12,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:18:12,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:18:12,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:18:12,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:18:12,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:18:12,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:18:12,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:18:12,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:18:12,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:18:12,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:18:12,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:18:12,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:18:12,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:18:12,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:18:12,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:18:12,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:18:12,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:18:12,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:18:12,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:18:12,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:18:12,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:18:12,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:18:12,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:18:12,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:18:12,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:18:12,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:18:12,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:18:12,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:18:12,722 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 22:18:12,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:18:12,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:18:12,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:18:12,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:18:12,738 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:18:12,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:18:12,739 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:18:12,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:18:12,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:18:12,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:18:12,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:18:12,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:18:12,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:18:12,740 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:18:12,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:18:12,740 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:18:12,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:18:12,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:18:12,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:18:12,741 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:18:12,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:18:12,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:18:12,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:18:12,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:18:12,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:18:12,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:18:12,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:18:12,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:18:12,743 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:18:13,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:18:13,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:18:13,045 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:18:13,046 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:18:13,046 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:18:13,047 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-04-17 22:18:13,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcbd36ad/a784562b53d845edab2a50614c7f79cc/FLAG837583f65 [2020-04-17 22:18:13,659 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:18:13,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-04-17 22:18:13,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcbd36ad/a784562b53d845edab2a50614c7f79cc/FLAG837583f65 [2020-04-17 22:18:13,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcbd36ad/a784562b53d845edab2a50614c7f79cc [2020-04-17 22:18:13,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:18:13,958 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:18:13,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:18:13,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:18:13,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:18:13,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:18:13" (1/1) ... [2020-04-17 22:18:13,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61dd86d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:18:13, skipping insertion in model container [2020-04-17 22:18:13,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:18:13" (1/1) ... [2020-04-17 22:18:13,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:18:14,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:18:14,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:18:14,569 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:18:14,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:18:14,720 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:18:14,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:18:14 WrapperNode [2020-04-17 22:18:14,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:18:14,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:18:14,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:18:14,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:18:14,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:18:14" (1/1) ... [2020-04-17 22:18:14,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:18:14" (1/1) ... [2020-04-17 22:18:14,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:18:14,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:18:14,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:18:14,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:18:14,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:18:14" (1/1) ... [2020-04-17 22:18:14,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:18:14" (1/1) ... [2020-04-17 22:18:14,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:18:14" (1/1) ... [2020-04-17 22:18:14,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:18:14" (1/1) ... [2020-04-17 22:18:14,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:18:14" (1/1) ... [2020-04-17 22:18:14,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:18:14" (1/1) ... [2020-04-17 22:18:14,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:18:14" (1/1) ... [2020-04-17 22:18:14,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:18:14,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:18:14,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:18:14,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:18:14,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:18:14" (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 22:18:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:18:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:18:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:18:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:18:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:18:14,881 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:18:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:18:14,882 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:18:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:18:14,882 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:18:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:18:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:18:14,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:18:14,884 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 22:18:15,285 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:18:15,286 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:18:15,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:18:15 BoogieIcfgContainer [2020-04-17 22:18:15,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:18:15,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:18:15,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:18:15,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:18:15,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:18:13" (1/3) ... [2020-04-17 22:18:15,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17eb187b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:18:15, skipping insertion in model container [2020-04-17 22:18:15,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:18:14" (2/3) ... [2020-04-17 22:18:15,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17eb187b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:18:15, skipping insertion in model container [2020-04-17 22:18:15,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:18:15" (3/3) ... [2020-04-17 22:18:15,299 INFO L109 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2020-04-17 22:18:15,309 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:18:15,310 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:18:15,316 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:18:15,317 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:18:15,344 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,344 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,344 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,345 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,345 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,346 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,346 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,346 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,347 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,347 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,347 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,348 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,348 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,348 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,349 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,349 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,349 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,350 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,354 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,354 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,355 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,355 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,361 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,361 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,362 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,362 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,364 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,365 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,365 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,365 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:18:15,381 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:18:15,403 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:18:15,403 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:18:15,403 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:18:15,403 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:18:15,403 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:18:15,403 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:18:15,404 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:18:15,404 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:18:15,420 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 22:18:15,422 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:18:15,467 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:18:15,468 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:18:15,473 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 22:18:15,476 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:18:15,497 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:18:15,497 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:18:15,498 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 22:18:15,500 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:18:15,501 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:18:17,279 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-04-17 22:18:17,474 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-17 22:18:17,474 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-17 22:18:17,478 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 22:18:17,506 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 22:18:17,508 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 22:18:17,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:18:17,516 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:18:17,517 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:18:17,518 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:18:17,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:18:17,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-17 22:18:17,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:18:17,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624225797] [2020-04-17 22:18:17,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:18:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:18:17,784 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 22:18:17,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624225797] [2020-04-17 22:18:17,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:18:17,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:18:17,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608634836] [2020-04-17 22:18:17,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:18:17,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:18:17,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:18:17,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:18:17,818 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 22:18:17,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:18:17,877 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-04-17 22:18:17,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:18:17,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 22:18:17,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:18:17,899 INFO L225 Difference]: With dead ends: 294 [2020-04-17 22:18:17,899 INFO L226 Difference]: Without dead ends: 230 [2020-04-17 22:18:17,903 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 22:18:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-04-17 22:18:17,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-04-17 22:18:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-04-17 22:18:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-04-17 22:18:18,003 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-04-17 22:18:18,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:18:18,005 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-04-17 22:18:18,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:18:18,005 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-04-17 22:18:18,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:18:18,007 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:18:18,008 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:18:18,008 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:18:18,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:18:18,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1775895904, now seen corresponding path program 1 times [2020-04-17 22:18:18,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:18:18,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667570988] [2020-04-17 22:18:18,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:18:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:18:18,113 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 22:18:18,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667570988] [2020-04-17 22:18:18,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:18:18,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:18:18,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693434338] [2020-04-17 22:18:18,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:18:18,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:18:18,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:18:18,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:18:18,117 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-04-17 22:18:18,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:18:18,151 INFO L93 Difference]: Finished difference Result 344 states and 903 transitions. [2020-04-17 22:18:18,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:18:18,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 22:18:18,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:18:18,158 INFO L225 Difference]: With dead ends: 344 [2020-04-17 22:18:18,158 INFO L226 Difference]: Without dead ends: 254 [2020-04-17 22:18:18,162 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 22:18:18,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-04-17 22:18:18,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 218. [2020-04-17 22:18:18,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 22:18:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 570 transitions. [2020-04-17 22:18:18,190 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 570 transitions. Word has length 9 [2020-04-17 22:18:18,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:18:18,190 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 570 transitions. [2020-04-17 22:18:18,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:18:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 570 transitions. [2020-04-17 22:18:18,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:18:18,193 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:18:18,193 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:18:18,193 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:18:18,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:18:18,194 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-04-17 22:18:18,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:18:18,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939386554] [2020-04-17 22:18:18,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:18:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:18:18,262 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 22:18:18,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939386554] [2020-04-17 22:18:18,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:18:18,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:18:18,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301557780] [2020-04-17 22:18:18,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:18:18,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:18:18,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:18:18,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:18:18,265 INFO L87 Difference]: Start difference. First operand 218 states and 570 transitions. Second operand 3 states. [2020-04-17 22:18:18,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:18:18,271 INFO L93 Difference]: Finished difference Result 206 states and 529 transitions. [2020-04-17 22:18:18,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:18:18,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 22:18:18,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:18:18,273 INFO L225 Difference]: With dead ends: 206 [2020-04-17 22:18:18,274 INFO L226 Difference]: Without dead ends: 206 [2020-04-17 22:18:18,274 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 22:18:18,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-04-17 22:18:18,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-04-17 22:18:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-04-17 22:18:18,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 529 transitions. [2020-04-17 22:18:18,284 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 529 transitions. Word has length 9 [2020-04-17 22:18:18,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:18:18,285 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 529 transitions. [2020-04-17 22:18:18,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:18:18,285 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 529 transitions. [2020-04-17 22:18:18,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:18:18,286 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:18:18,286 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:18:18,287 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:18:18,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:18:18,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1603399558, now seen corresponding path program 1 times [2020-04-17 22:18:18,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:18:18,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760546515] [2020-04-17 22:18:18,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:18:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:18:18,327 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 22:18:18,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760546515] [2020-04-17 22:18:18,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:18:18,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:18:18,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848630442] [2020-04-17 22:18:18,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:18:18,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:18:18,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:18:18,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:18:18,329 INFO L87 Difference]: Start difference. First operand 206 states and 529 transitions. Second operand 4 states. [2020-04-17 22:18:18,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:18:18,353 INFO L93 Difference]: Finished difference Result 242 states and 592 transitions. [2020-04-17 22:18:18,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:18:18,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-17 22:18:18,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:18:18,355 INFO L225 Difference]: With dead ends: 242 [2020-04-17 22:18:18,355 INFO L226 Difference]: Without dead ends: 146 [2020-04-17 22:18:18,356 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 22:18:18,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-17 22:18:18,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-17 22:18:18,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-17 22:18:18,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 338 transitions. [2020-04-17 22:18:18,383 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 338 transitions. Word has length 10 [2020-04-17 22:18:18,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:18:18,383 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 338 transitions. [2020-04-17 22:18:18,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:18:18,384 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 338 transitions. [2020-04-17 22:18:18,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:18:18,385 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:18:18,385 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:18:18,385 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:18:18,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:18:18,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-04-17 22:18:18,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:18:18,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915024915] [2020-04-17 22:18:18,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:18:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:18:18,415 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 22:18:18,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915024915] [2020-04-17 22:18:18,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:18:18,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:18:18,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527758496] [2020-04-17 22:18:18,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:18:18,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:18:18,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:18:18,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:18:18,417 INFO L87 Difference]: Start difference. First operand 146 states and 338 transitions. Second operand 3 states. [2020-04-17 22:18:18,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:18:18,423 INFO L93 Difference]: Finished difference Result 134 states and 300 transitions. [2020-04-17 22:18:18,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:18:18,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 22:18:18,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:18:18,424 INFO L225 Difference]: With dead ends: 134 [2020-04-17 22:18:18,424 INFO L226 Difference]: Without dead ends: 110 [2020-04-17 22:18:18,425 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 22:18:18,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-04-17 22:18:18,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-04-17 22:18:18,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-04-17 22:18:18,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 255 transitions. [2020-04-17 22:18:18,429 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 255 transitions. Word has length 11 [2020-04-17 22:18:18,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:18:18,429 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 255 transitions. [2020-04-17 22:18:18,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:18:18,430 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-04-17 22:18:18,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:18:18,431 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:18:18,431 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:18:18,431 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:18:18,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:18:18,431 INFO L82 PathProgramCache]: Analyzing trace with hash 554696714, now seen corresponding path program 1 times [2020-04-17 22:18:18,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:18:18,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33457773] [2020-04-17 22:18:18,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:18:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:18:18,499 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 22:18:18,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33457773] [2020-04-17 22:18:18,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:18:18,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:18:18,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691862306] [2020-04-17 22:18:18,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:18:18,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:18:18,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:18:18,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:18:18,502 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 4 states. [2020-04-17 22:18:18,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:18:18,549 INFO L93 Difference]: Finished difference Result 128 states and 277 transitions. [2020-04-17 22:18:18,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:18:18,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 22:18:18,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:18:18,552 INFO L225 Difference]: With dead ends: 128 [2020-04-17 22:18:18,552 INFO L226 Difference]: Without dead ends: 97 [2020-04-17 22:18:18,552 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 22:18:18,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-17 22:18:18,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-17 22:18:18,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-17 22:18:18,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 209 transitions. [2020-04-17 22:18:18,556 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 209 transitions. Word has length 13 [2020-04-17 22:18:18,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:18:18,557 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 209 transitions. [2020-04-17 22:18:18,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:18:18,557 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 209 transitions. [2020-04-17 22:18:18,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:18:18,558 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:18:18,558 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:18:18,558 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:18:18,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:18:18,558 INFO L82 PathProgramCache]: Analyzing trace with hash 2052968077, now seen corresponding path program 1 times [2020-04-17 22:18:18,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:18:18,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999427783] [2020-04-17 22:18:18,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:18:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:18:18,616 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 22:18:18,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999427783] [2020-04-17 22:18:18,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:18:18,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:18:18,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763748337] [2020-04-17 22:18:18,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:18:18,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:18:18,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:18:18,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:18:18,618 INFO L87 Difference]: Start difference. First operand 97 states and 209 transitions. Second operand 5 states. [2020-04-17 22:18:18,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:18:18,659 INFO L93 Difference]: Finished difference Result 99 states and 200 transitions. [2020-04-17 22:18:18,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:18:18,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 22:18:18,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:18:18,661 INFO L225 Difference]: With dead ends: 99 [2020-04-17 22:18:18,661 INFO L226 Difference]: Without dead ends: 79 [2020-04-17 22:18:18,661 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 22:18:18,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-04-17 22:18:18,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-04-17 22:18:18,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-04-17 22:18:18,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 157 transitions. [2020-04-17 22:18:18,665 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 157 transitions. Word has length 14 [2020-04-17 22:18:18,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:18:18,665 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 157 transitions. [2020-04-17 22:18:18,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:18:18,665 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 157 transitions. [2020-04-17 22:18:18,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:18:18,666 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:18:18,666 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:18:18,666 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:18:18,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:18:18,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1697163721, now seen corresponding path program 1 times [2020-04-17 22:18:18,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:18:18,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304633403] [2020-04-17 22:18:18,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:18:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:18:18,727 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 22:18:18,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304633403] [2020-04-17 22:18:18,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:18:18,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:18:18,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681594605] [2020-04-17 22:18:18,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:18:18,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:18:18,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:18:18,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:18:18,729 INFO L87 Difference]: Start difference. First operand 79 states and 157 transitions. Second operand 6 states. [2020-04-17 22:18:18,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:18:18,786 INFO L93 Difference]: Finished difference Result 76 states and 149 transitions. [2020-04-17 22:18:18,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:18:18,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 22:18:18,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:18:18,787 INFO L225 Difference]: With dead ends: 76 [2020-04-17 22:18:18,787 INFO L226 Difference]: Without dead ends: 69 [2020-04-17 22:18:18,788 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 22:18:18,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-04-17 22:18:18,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-04-17 22:18:18,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-04-17 22:18:18,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 137 transitions. [2020-04-17 22:18:18,790 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 137 transitions. Word has length 15 [2020-04-17 22:18:18,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:18:18,791 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 137 transitions. [2020-04-17 22:18:18,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:18:18,791 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 137 transitions. [2020-04-17 22:18:18,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:18:18,792 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:18:18,792 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 22:18:18,792 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:18:18,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:18:18,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-04-17 22:18:18,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:18:18,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668663344] [2020-04-17 22:18:18,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:18:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:18:18,826 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 22:18:18,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668663344] [2020-04-17 22:18:18,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:18:18,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:18:18,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207761869] [2020-04-17 22:18:18,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:18:18,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:18:18,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:18:18,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:18:18,829 INFO L87 Difference]: Start difference. First operand 69 states and 137 transitions. Second operand 4 states. [2020-04-17 22:18:18,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:18:18,848 INFO L93 Difference]: Finished difference Result 68 states and 136 transitions. [2020-04-17 22:18:18,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:18:18,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:18:18,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:18:18,849 INFO L225 Difference]: With dead ends: 68 [2020-04-17 22:18:18,849 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:18:18,849 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:18:18,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:18:18,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:18:18,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:18:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:18:18,850 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 22:18:18,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:18:18,850 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:18:18,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:18:18,851 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:18:18,851 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:18:18,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:18:18 BasicIcfg [2020-04-17 22:18:18,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:18:18,857 INFO L168 Benchmark]: Toolchain (without parser) took 4920.09 ms. Allocated memory was 145.2 MB in the beginning and 246.9 MB in the end (delta: 101.7 MB). Free memory was 101.7 MB in the beginning and 144.7 MB in the end (delta: -43.0 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. [2020-04-17 22:18:18,858 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 145.2 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 22:18:18,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 761.68 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 99.9 MB in the beginning and 159.0 MB in the end (delta: -59.0 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-17 22:18:18,859 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.72 ms. Allocated memory is still 202.4 MB. Free memory was 159.0 MB in the beginning and 156.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:18:18,860 INFO L168 Benchmark]: Boogie Preprocessor took 29.85 ms. Allocated memory is still 202.4 MB. Free memory was 156.9 MB in the beginning and 155.9 MB in the end (delta: 978.5 kB). Peak memory consumption was 978.5 kB. Max. memory is 7.1 GB. [2020-04-17 22:18:18,861 INFO L168 Benchmark]: RCFGBuilder took 475.39 ms. Allocated memory is still 202.4 MB. Free memory was 155.0 MB in the beginning and 132.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:18:18,862 INFO L168 Benchmark]: TraceAbstraction took 3563.38 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 132.9 MB in the beginning and 144.7 MB in the end (delta: -11.9 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. [2020-04-17 22:18:18,866 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 145.2 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 761.68 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 99.9 MB in the beginning and 159.0 MB in the end (delta: -59.0 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.72 ms. Allocated memory is still 202.4 MB. Free memory was 159.0 MB in the beginning and 156.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.85 ms. Allocated memory is still 202.4 MB. Free memory was 156.9 MB in the beginning and 155.9 MB in the end (delta: 978.5 kB). Peak memory consumption was 978.5 kB. Max. memory is 7.1 GB. * RCFGBuilder took 475.39 ms. Allocated memory is still 202.4 MB. Free memory was 155.0 MB in the beginning and 132.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3563.38 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 132.9 MB in the beginning and 144.7 MB in the end (delta: -11.9 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 677 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 19 SemBasedMoverChecksPositive, 35 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: 3.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 165 SDtfs, 121 SDslu, 180 SDs, 0 SdLazy, 111 SolverSat, 20 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, 9 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 3817 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...