/usr/bin/java -Xmx16000000000 -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/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:11:32,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:11:32,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:11:32,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:11:32,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:11:32,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:11:32,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:11:32,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:11:32,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:11:32,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:11:32,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:11:32,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:11:32,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:11:32,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:11:32,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:11:32,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:11:32,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:11:32,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:11:32,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:11:32,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:11:32,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:11:32,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:11:32,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:11:32,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:11:32,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 22:11:32,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:11:32,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:11:32,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:11:32,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:11:32,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:11:32,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:11:32,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:11:32,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:11:32,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:11:32,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:11:32,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:11:32,738 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 [2020-10-15 22:11:32,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:11:32,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:11:32,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:11:32,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:11:32,800 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:11:32,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:11:32,801 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:11:32,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:11:32,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:11:32,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:11:32,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:11:32,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:11:32,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:11:32,802 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:11:32,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:11:32,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:11:32,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:11:32,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:11:32,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:11:32,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:11:32,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:11:32,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:11:32,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:11:32,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:11:32,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:11:32,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:11:32,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:11:32,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:11:32,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:11:33,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:11:33,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:11:33,118 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:11:33,119 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:11:33,120 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:11:33,120 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-10-15 22:11:33,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d26bdd2/2b822433390d429588b46d85a1c39277/FLAGc1b575f29 [2020-10-15 22:11:33,677 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:11:33,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-10-15 22:11:33,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d26bdd2/2b822433390d429588b46d85a1c39277/FLAGc1b575f29 [2020-10-15 22:11:33,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d26bdd2/2b822433390d429588b46d85a1c39277 [2020-10-15 22:11:33,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:11:33,994 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:11:33,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:11:33,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:11:33,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:11:34,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:11:33" (1/1) ... [2020-10-15 22:11:34,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd10c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:34, skipping insertion in model container [2020-10-15 22:11:34,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:11:33" (1/1) ... [2020-10-15 22:11:34,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:11:34,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:11:34,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:11:34,558 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:11:34,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:11:34,710 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:11:34,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:34 WrapperNode [2020-10-15 22:11:34,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:11:34,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:11:34,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:11:34,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:11:34,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:34" (1/1) ... [2020-10-15 22:11:34,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:34" (1/1) ... [2020-10-15 22:11:34,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:11:34,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:11:34,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:11:34,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:11:34,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:34" (1/1) ... [2020-10-15 22:11:34,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:34" (1/1) ... [2020-10-15 22:11:34,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:34" (1/1) ... [2020-10-15 22:11:34,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:34" (1/1) ... [2020-10-15 22:11:34,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:34" (1/1) ... [2020-10-15 22:11:34,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:34" (1/1) ... [2020-10-15 22:11:34,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:34" (1/1) ... [2020-10-15 22:11:34,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:11:34,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:11:34,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:11:34,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:11:34,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:34" (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 [2020-10-15 22:11:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:11:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 22:11:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:11:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:11:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 22:11:34,863 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 22:11:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 22:11:34,863 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 22:11:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 22:11:34,864 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 22:11:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 22:11:34,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:11:34,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:11:34,866 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 22:11:35,228 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:11:35,228 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 22:11:35,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:11:35 BoogieIcfgContainer [2020-10-15 22:11:35,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:11:35,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:11:35,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:11:35,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:11:35,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:11:33" (1/3) ... [2020-10-15 22:11:35,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18298709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:11:35, skipping insertion in model container [2020-10-15 22:11:35,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:34" (2/3) ... [2020-10-15 22:11:35,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18298709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:11:35, skipping insertion in model container [2020-10-15 22:11:35,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:11:35" (3/3) ... [2020-10-15 22:11:35,240 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-10-15 22:11:35,249 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:11:35,249 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:11:35,256 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:11:35,257 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:11:35,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,296 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,299 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,299 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,300 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,300 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,301 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,301 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,301 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,301 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,302 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,302 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,302 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,303 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,303 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,303 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,303 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,304 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,309 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,312 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,312 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,312 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,319 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,320 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,320 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,321 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,323 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,323 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,323 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,324 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:35,339 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 22:11:35,361 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:11:35,361 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:11:35,361 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:11:35,362 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:11:35,362 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:11:35,362 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:11:35,362 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:11:35,362 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:11:35,376 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:11:35,379 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-15 22:11:35,382 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-15 22:11:35,384 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-15 22:11:35,437 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-15 22:11:35,438 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 22:11:35,444 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. [2020-10-15 22:11:35,449 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-15 22:11:36,995 INFO L132 LiptonReduction]: Checked pairs total: 2962 [2020-10-15 22:11:36,995 INFO L134 LiptonReduction]: Total number of compositions: 59 [2020-10-15 22:11:37,001 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-15 22:11:37,028 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-15 22:11:37,031 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-15 22:11:37,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 22:11:37,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:37,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:37,041 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:37,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:37,047 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-10-15 22:11:37,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:37,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076157586] [2020-10-15 22:11:37,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:37,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:37,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076157586] [2020-10-15 22:11:37,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:37,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:11:37,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618369313] [2020-10-15 22:11:37,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:11:37,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:37,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:11:37,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:11:37,277 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-15 22:11:37,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:37,338 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-15 22:11:37,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:11:37,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 22:11:37,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:37,357 INFO L225 Difference]: With dead ends: 282 [2020-10-15 22:11:37,358 INFO L226 Difference]: Without dead ends: 218 [2020-10-15 22:11:37,359 INFO L677 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 [2020-10-15 22:11:37,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-15 22:11:37,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-15 22:11:37,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-15 22:11:37,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-15 22:11:37,429 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-15 22:11:37,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:37,431 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-15 22:11:37,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:11:37,431 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-15 22:11:37,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 22:11:37,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:37,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:37,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:11:37,434 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:37,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:37,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1372085576, now seen corresponding path program 1 times [2020-10-15 22:11:37,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:37,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710545426] [2020-10-15 22:11:37,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:37,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:37,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710545426] [2020-10-15 22:11:37,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:37,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:11:37,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212956065] [2020-10-15 22:11:37,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:11:37,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:37,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:11:37,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:11:37,510 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-15 22:11:37,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:37,550 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-15 22:11:37,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:11:37,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-15 22:11:37,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:37,553 INFO L225 Difference]: With dead ends: 202 [2020-10-15 22:11:37,553 INFO L226 Difference]: Without dead ends: 202 [2020-10-15 22:11:37,554 INFO L677 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 [2020-10-15 22:11:37,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-15 22:11:37,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-15 22:11:37,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-15 22:11:37,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-15 22:11:37,574 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-15 22:11:37,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:37,574 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-15 22:11:37,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:11:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-15 22:11:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 22:11:37,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:37,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:37,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:11:37,577 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:37,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:37,577 INFO L82 PathProgramCache]: Analyzing trace with hash 365373016, now seen corresponding path program 1 times [2020-10-15 22:11:37,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:37,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826375246] [2020-10-15 22:11:37,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:37,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826375246] [2020-10-15 22:11:37,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:37,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:11:37,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141215328] [2020-10-15 22:11:37,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:11:37,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:37,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:11:37,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:11:37,680 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-15 22:11:37,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:37,688 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-10-15 22:11:37,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:11:37,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 22:11:37,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:37,691 INFO L225 Difference]: With dead ends: 198 [2020-10-15 22:11:37,692 INFO L226 Difference]: Without dead ends: 198 [2020-10-15 22:11:37,692 INFO L677 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 [2020-10-15 22:11:37,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-15 22:11:37,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-10-15 22:11:37,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-15 22:11:37,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-10-15 22:11:37,706 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 10 [2020-10-15 22:11:37,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:37,707 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-10-15 22:11:37,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:11:37,707 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-10-15 22:11:37,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:11:37,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:37,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:37,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 22:11:37,709 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:37,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:37,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1571968161, now seen corresponding path program 1 times [2020-10-15 22:11:37,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:37,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950515774] [2020-10-15 22:11:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:37,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950515774] [2020-10-15 22:11:37,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:37,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:11:37,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145493883] [2020-10-15 22:11:37,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:11:37,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:37,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:11:37,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:11:37,752 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 3 states. [2020-10-15 22:11:37,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:37,758 INFO L93 Difference]: Finished difference Result 192 states and 511 transitions. [2020-10-15 22:11:37,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:11:37,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-15 22:11:37,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:37,761 INFO L225 Difference]: With dead ends: 192 [2020-10-15 22:11:37,761 INFO L226 Difference]: Without dead ends: 192 [2020-10-15 22:11:37,762 INFO L677 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 [2020-10-15 22:11:37,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-15 22:11:37,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-10-15 22:11:37,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-15 22:11:37,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 511 transitions. [2020-10-15 22:11:37,774 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 511 transitions. Word has length 11 [2020-10-15 22:11:37,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:37,774 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 511 transitions. [2020-10-15 22:11:37,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:11:37,774 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 511 transitions. [2020-10-15 22:11:37,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 22:11:37,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:37,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:37,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 22:11:37,777 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:37,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:37,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-10-15 22:11:37,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:37,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554271885] [2020-10-15 22:11:37,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:37,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554271885] [2020-10-15 22:11:37,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:37,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:11:37,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185921453] [2020-10-15 22:11:37,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:37,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:37,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:37,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:37,865 INFO L87 Difference]: Start difference. First operand 192 states and 511 transitions. Second operand 4 states. [2020-10-15 22:11:37,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:37,908 INFO L93 Difference]: Finished difference Result 224 states and 554 transitions. [2020-10-15 22:11:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:11:37,909 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 22:11:37,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:37,911 INFO L225 Difference]: With dead ends: 224 [2020-10-15 22:11:37,911 INFO L226 Difference]: Without dead ends: 160 [2020-10-15 22:11:37,911 INFO L677 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 [2020-10-15 22:11:37,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-15 22:11:37,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2020-10-15 22:11:37,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-15 22:11:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 383 transitions. [2020-10-15 22:11:37,920 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 383 transitions. Word has length 12 [2020-10-15 22:11:37,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:37,921 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 383 transitions. [2020-10-15 22:11:37,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:37,921 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 383 transitions. [2020-10-15 22:11:37,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 22:11:37,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:37,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:37,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 22:11:37,923 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:37,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:37,923 INFO L82 PathProgramCache]: Analyzing trace with hash 887113091, now seen corresponding path program 1 times [2020-10-15 22:11:37,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:37,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010687649] [2020-10-15 22:11:37,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:37,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010687649] [2020-10-15 22:11:37,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:37,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:11:37,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793415180] [2020-10-15 22:11:37,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:11:37,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:37,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:11:37,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:37,990 INFO L87 Difference]: Start difference. First operand 160 states and 383 transitions. Second operand 5 states. [2020-10-15 22:11:38,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:38,040 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-10-15 22:11:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:11:38,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 22:11:38,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:38,042 INFO L225 Difference]: With dead ends: 160 [2020-10-15 22:11:38,042 INFO L226 Difference]: Without dead ends: 123 [2020-10-15 22:11:38,043 INFO L677 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 [2020-10-15 22:11:38,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-15 22:11:38,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-15 22:11:38,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-15 22:11:38,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-10-15 22:11:38,049 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 13 [2020-10-15 22:11:38,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:38,049 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-10-15 22:11:38,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:11:38,049 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-10-15 22:11:38,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:11:38,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:38,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:38,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 22:11:38,051 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:38,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:38,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1920279248, now seen corresponding path program 1 times [2020-10-15 22:11:38,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:38,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577725904] [2020-10-15 22:11:38,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:38,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577725904] [2020-10-15 22:11:38,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:38,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:11:38,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072066835] [2020-10-15 22:11:38,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:11:38,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:38,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:11:38,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:11:38,083 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 3 states. [2020-10-15 22:11:38,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:38,091 INFO L93 Difference]: Finished difference Result 155 states and 330 transitions. [2020-10-15 22:11:38,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:11:38,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-15 22:11:38,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:38,093 INFO L225 Difference]: With dead ends: 155 [2020-10-15 22:11:38,093 INFO L226 Difference]: Without dead ends: 124 [2020-10-15 22:11:38,094 INFO L677 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 [2020-10-15 22:11:38,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-15 22:11:38,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-10-15 22:11:38,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-15 22:11:38,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 257 transitions. [2020-10-15 22:11:38,098 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 257 transitions. Word has length 14 [2020-10-15 22:11:38,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:38,099 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 257 transitions. [2020-10-15 22:11:38,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:11:38,099 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 257 transitions. [2020-10-15 22:11:38,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:11:38,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:38,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:38,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 22:11:38,100 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:38,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:38,101 INFO L82 PathProgramCache]: Analyzing trace with hash 451653261, now seen corresponding path program 1 times [2020-10-15 22:11:38,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:38,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438451802] [2020-10-15 22:11:38,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:38,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:38,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438451802] [2020-10-15 22:11:38,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:38,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:11:38,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138289995] [2020-10-15 22:11:38,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:38,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:38,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:38,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:38,138 INFO L87 Difference]: Start difference. First operand 122 states and 257 transitions. Second operand 4 states. [2020-10-15 22:11:38,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:38,161 INFO L93 Difference]: Finished difference Result 154 states and 308 transitions. [2020-10-15 22:11:38,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:11:38,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-15 22:11:38,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:38,162 INFO L225 Difference]: With dead ends: 154 [2020-10-15 22:11:38,162 INFO L226 Difference]: Without dead ends: 116 [2020-10-15 22:11:38,163 INFO L677 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 [2020-10-15 22:11:38,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-15 22:11:38,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-10-15 22:11:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-15 22:11:38,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 222 transitions. [2020-10-15 22:11:38,167 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 222 transitions. Word has length 15 [2020-10-15 22:11:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:38,167 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 222 transitions. [2020-10-15 22:11:38,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:38,168 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 222 transitions. [2020-10-15 22:11:38,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:11:38,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:38,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:38,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 22:11:38,169 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:38,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:38,169 INFO L82 PathProgramCache]: Analyzing trace with hash -600886075, now seen corresponding path program 1 times [2020-10-15 22:11:38,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:38,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69315200] [2020-10-15 22:11:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:38,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69315200] [2020-10-15 22:11:38,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:38,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:11:38,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240391701] [2020-10-15 22:11:38,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:11:38,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:38,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:11:38,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:11:38,234 INFO L87 Difference]: Start difference. First operand 114 states and 222 transitions. Second operand 6 states. [2020-10-15 22:11:38,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:38,297 INFO L93 Difference]: Finished difference Result 110 states and 212 transitions. [2020-10-15 22:11:38,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:11:38,297 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-15 22:11:38,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:38,298 INFO L225 Difference]: With dead ends: 110 [2020-10-15 22:11:38,298 INFO L226 Difference]: Without dead ends: 38 [2020-10-15 22:11:38,299 INFO L677 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 [2020-10-15 22:11:38,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-15 22:11:38,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-15 22:11:38,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-15 22:11:38,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-10-15 22:11:38,301 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 15 [2020-10-15 22:11:38,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:38,301 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-10-15 22:11:38,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:11:38,301 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-10-15 22:11:38,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 22:11:38,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:38,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:38,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 22:11:38,302 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:38,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:38,303 INFO L82 PathProgramCache]: Analyzing trace with hash 13395029, now seen corresponding path program 1 times [2020-10-15 22:11:38,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:38,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476441621] [2020-10-15 22:11:38,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:38,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476441621] [2020-10-15 22:11:38,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:38,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:11:38,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465678163] [2020-10-15 22:11:38,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:38,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:38,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:38,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:38,339 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-10-15 22:11:38,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:38,357 INFO L93 Difference]: Finished difference Result 51 states and 83 transitions. [2020-10-15 22:11:38,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:11:38,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 22:11:38,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:38,359 INFO L225 Difference]: With dead ends: 51 [2020-10-15 22:11:38,359 INFO L226 Difference]: Without dead ends: 30 [2020-10-15 22:11:38,359 INFO L677 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 [2020-10-15 22:11:38,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-15 22:11:38,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-15 22:11:38,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-15 22:11:38,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-10-15 22:11:38,361 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-10-15 22:11:38,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:38,361 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-10-15 22:11:38,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:38,362 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-10-15 22:11:38,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 22:11:38,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:38,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:38,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 22:11:38,363 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:38,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:38,363 INFO L82 PathProgramCache]: Analyzing trace with hash -34011261, now seen corresponding path program 2 times [2020-10-15 22:11:38,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:38,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663256430] [2020-10-15 22:11:38,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:38,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:38,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663256430] [2020-10-15 22:11:38,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:38,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:11:38,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021845188] [2020-10-15 22:11:38,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:38,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:38,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:38,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:38,399 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-10-15 22:11:38,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:38,412 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-10-15 22:11:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:11:38,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 22:11:38,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:38,413 INFO L225 Difference]: With dead ends: 29 [2020-10-15 22:11:38,414 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 22:11:38,414 INFO L677 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 [2020-10-15 22:11:38,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 22:11:38,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 22:11:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 22:11:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 22:11:38,415 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-15 22:11:38,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:38,415 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 22:11:38,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:38,415 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 22:11:38,416 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 22:11:38,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 22:11:38,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:11:38 BasicIcfg [2020-10-15 22:11:38,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:11:38,423 INFO L168 Benchmark]: Toolchain (without parser) took 4428.88 ms. Allocated memory was 245.9 MB in the beginning and 363.9 MB in the end (delta: 118.0 MB). Free memory was 201.2 MB in the beginning and 216.9 MB in the end (delta: -15.6 MB). Peak memory consumption was 102.3 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:38,424 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 245.9 MB. Free memory is still 222.3 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:11:38,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.75 ms. Allocated memory was 245.9 MB in the beginning and 297.3 MB in the end (delta: 51.4 MB). Free memory was 201.2 MB in the beginning and 250.1 MB in the end (delta: -48.9 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:38,425 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.17 ms. Allocated memory is still 297.3 MB. Free memory is still 250.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:11:38,426 INFO L168 Benchmark]: Boogie Preprocessor took 28.27 ms. Allocated memory is still 297.3 MB. Free memory was 250.1 MB in the beginning and 247.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:38,427 INFO L168 Benchmark]: RCFGBuilder took 440.87 ms. Allocated memory is still 297.3 MB. Free memory was 247.6 MB in the beginning and 225.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:38,428 INFO L168 Benchmark]: TraceAbstraction took 3188.28 ms. Allocated memory was 297.3 MB in the beginning and 363.9 MB in the end (delta: 66.6 MB). Free memory was 225.6 MB in the beginning and 216.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 75.3 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:38,431 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 245.9 MB. Free memory is still 222.3 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 716.75 ms. Allocated memory was 245.9 MB in the beginning and 297.3 MB in the end (delta: 51.4 MB). Free memory was 201.2 MB in the beginning and 250.1 MB in the end (delta: -48.9 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.17 ms. Allocated memory is still 297.3 MB. Free memory is still 250.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.27 ms. Allocated memory is still 297.3 MB. Free memory was 250.1 MB in the beginning and 247.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 440.87 ms. Allocated memory is still 297.3 MB. Free memory was 247.6 MB in the beginning and 225.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3188.28 ms. Allocated memory was 297.3 MB in the beginning and 363.9 MB in the end (delta: 66.6 MB). Free memory was 225.6 MB in the beginning and 216.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 75.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 824 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 58 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 77 PlacesBefore, 31 PlacesAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2962 MoverChecksTotal - 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: 3.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 216 SDtfs, 131 SDslu, 232 SDs, 0 SdLazy, 130 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 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, 11 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 4600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...