/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:42:14,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:42:14,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:42:14,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:42:14,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:42:14,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:42:14,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:42:14,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:42:14,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:42:14,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:42:14,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:42:14,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:42:14,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:42:14,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:42:14,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:42:14,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:42:14,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:42:14,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:42:14,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:42:14,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:42:14,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:42:14,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:42:14,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:42:14,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:42:14,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 23:42:14,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 23:42:14,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 23:42:14,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 23:42:14,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 23:42:14,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 23:42:14,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:42:14,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:42:14,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:42:14,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:42:14,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:42:14,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:42:14,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:42:14,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:42:14,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:42:14,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:42:14,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:42:14,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-11 23:42:14,249 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:42:14,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:42:14,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:42:14,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:42:14,252 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:42:14,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:42:14,253 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:42:14,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:42:14,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:42:14,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:42:14,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:42:14,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:42:14,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:42:14,255 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:42:14,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:42:14,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:42:14,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:42:14,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:42:14,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:42:14,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:42:14,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:42:14,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:42:14,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:42:14,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:42:14,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:42:14,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:42:14,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:42:14,258 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:42:14,258 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:42:14,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:42:14,259 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:42:14,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:42:14,710 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:42:14,714 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:42:14,716 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:42:14,717 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:42:14,719 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2020-09-11 23:42:14,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7299fae2f/0f8eaa2ff8ec4070a0d93eeefe7ff38d/FLAG6bd67b13e [2020-09-11 23:42:15,542 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:42:15,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2020-09-11 23:42:15,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7299fae2f/0f8eaa2ff8ec4070a0d93eeefe7ff38d/FLAG6bd67b13e [2020-09-11 23:42:15,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7299fae2f/0f8eaa2ff8ec4070a0d93eeefe7ff38d [2020-09-11 23:42:15,722 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:42:15,729 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:42:15,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:42:15,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:42:15,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:42:15,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:42:15" (1/1) ... [2020-09-11 23:42:15,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0f7ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:15, skipping insertion in model container [2020-09-11 23:42:15,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:42:15" (1/1) ... [2020-09-11 23:42:15,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:42:15,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:42:16,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:42:16,351 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:42:16,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:42:16,500 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:42:16,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:16 WrapperNode [2020-09-11 23:42:16,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:42:16,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:42:16,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:42:16,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:42:16,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:16" (1/1) ... [2020-09-11 23:42:16,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:16" (1/1) ... [2020-09-11 23:42:16,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:42:16,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:42:16,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:42:16,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:42:16,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:16" (1/1) ... [2020-09-11 23:42:16,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:16" (1/1) ... [2020-09-11 23:42:16,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:16" (1/1) ... [2020-09-11 23:42:16,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:16" (1/1) ... [2020-09-11 23:42:16,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:16" (1/1) ... [2020-09-11 23:42:16,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:16" (1/1) ... [2020-09-11 23:42:16,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:16" (1/1) ... [2020-09-11 23:42:16,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:42:16,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:42:16,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:42:16,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:42:16,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 23:42:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:42:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:42:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:42:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:42:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:42:16,664 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:42:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:42:16,665 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:42:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:42:16,665 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:42:16,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:42:16,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:42:16,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:42:16,673 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 23:42:17,074 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:42:17,074 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:42:17,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:42:17 BoogieIcfgContainer [2020-09-11 23:42:17,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:42:17,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:42:17,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:42:17,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:42:17,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:42:15" (1/3) ... [2020-09-11 23:42:17,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e6ad21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:42:17, skipping insertion in model container [2020-09-11 23:42:17,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:16" (2/3) ... [2020-09-11 23:42:17,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e6ad21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:42:17, skipping insertion in model container [2020-09-11 23:42:17,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:42:17" (3/3) ... [2020-09-11 23:42:17,090 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_tso.opt.i [2020-09-11 23:42:17,102 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:42:17,103 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:42:17,114 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:42:17,115 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:42:17,145 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,145 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,146 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,146 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,147 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,147 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,147 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,148 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,148 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,148 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,148 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,149 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,149 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,149 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,150 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,150 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,150 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,151 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,156 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,156 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,156 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,156 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,166 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,166 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,166 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,167 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,169 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,169 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,170 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,170 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:17,194 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 23:42:17,222 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:42:17,223 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:42:17,223 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:42:17,223 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:42:17,223 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:42:17,223 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:42:17,224 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:42:17,224 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:42:17,243 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-11 23:42:17,245 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:42:17,298 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:42:17,298 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:42:17,306 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:42:17,309 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:42:17,340 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:42:17,341 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:42:17,341 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:42:17,344 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 23:42:17,345 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:42:18,805 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-09-11 23:42:18,843 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-09-11 23:42:18,843 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-11 23:42:18,848 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 23:42:18,877 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 23:42:18,880 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 23:42:18,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:42:18,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:18,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:18,891 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:18,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:18,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-09-11 23:42:18,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:18,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373038494] [2020-09-11 23:42:18,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:19,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373038494] [2020-09-11 23:42:19,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:19,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:42:19,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1598018287] [2020-09-11 23:42:19,194 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:19,198 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:19,214 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 23:42:19,215 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:19,217 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:19,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:42:19,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:19,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:42:19,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:42:19,240 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 23:42:19,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:19,284 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-11 23:42:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:42:19,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 23:42:19,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:19,307 INFO L225 Difference]: With dead ends: 282 [2020-09-11 23:42:19,307 INFO L226 Difference]: Without dead ends: 218 [2020-09-11 23:42:19,309 INFO L675 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 [2020-09-11 23:42:19,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-11 23:42:19,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-11 23:42:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-11 23:42:19,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-11 23:42:19,390 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-11 23:42:19,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:19,392 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-11 23:42:19,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:42:19,392 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-11 23:42:19,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 23:42:19,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:19,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:19,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:42:19,395 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:19,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:19,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-09-11 23:42:19,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:19,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424737002] [2020-09-11 23:42:19,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:19,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:19,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424737002] [2020-09-11 23:42:19,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:19,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:42:19,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1000570987] [2020-09-11 23:42:19,498 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:19,499 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:19,502 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-11 23:42:19,502 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:19,555 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:19,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:42:19,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:19,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:42:19,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:42:19,558 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-11 23:42:19,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:19,586 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-11 23:42:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:42:19,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 23:42:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:19,589 INFO L225 Difference]: With dead ends: 242 [2020-09-11 23:42:19,589 INFO L226 Difference]: Without dead ends: 116 [2020-09-11 23:42:19,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:42:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-11 23:42:19,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-09-11 23:42:19,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-11 23:42:19,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-09-11 23:42:19,602 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-09-11 23:42:19,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:19,603 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-09-11 23:42:19,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:42:19,603 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-09-11 23:42:19,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:42:19,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:19,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:19,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:42:19,605 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:19,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:19,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-09-11 23:42:19,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:19,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550023216] [2020-09-11 23:42:19,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:19,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550023216] [2020-09-11 23:42:19,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:19,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:42:19,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2065126502] [2020-09-11 23:42:19,692 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:19,694 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:19,696 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-09-11 23:42:19,696 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:19,704 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:19,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:42:19,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:19,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:42:19,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:42:19,706 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 3 states. [2020-09-11 23:42:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:19,717 INFO L93 Difference]: Finished difference Result 110 states and 265 transitions. [2020-09-11 23:42:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:42:19,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-11 23:42:19,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:19,720 INFO L225 Difference]: With dead ends: 110 [2020-09-11 23:42:19,720 INFO L226 Difference]: Without dead ends: 110 [2020-09-11 23:42:19,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:42:19,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-11 23:42:19,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-11 23:42:19,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-11 23:42:19,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2020-09-11 23:42:19,731 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 11 [2020-09-11 23:42:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:19,731 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2020-09-11 23:42:19,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:42:19,732 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2020-09-11 23:42:19,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 23:42:19,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:19,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:19,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:42:19,734 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:19,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:19,734 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-09-11 23:42:19,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:19,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588543603] [2020-09-11 23:42:19,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:19,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588543603] [2020-09-11 23:42:19,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:19,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:42:19,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [280748749] [2020-09-11 23:42:19,799 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:19,800 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:19,802 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-09-11 23:42:19,803 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:19,812 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:19,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:42:19,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:19,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:42:19,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:42:19,814 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand 3 states. [2020-09-11 23:42:19,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:19,827 INFO L93 Difference]: Finished difference Result 104 states and 246 transitions. [2020-09-11 23:42:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:42:19,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-11 23:42:19,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:19,829 INFO L225 Difference]: With dead ends: 104 [2020-09-11 23:42:19,829 INFO L226 Difference]: Without dead ends: 104 [2020-09-11 23:42:19,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:42:19,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-11 23:42:19,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-11 23:42:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-11 23:42:19,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-09-11 23:42:19,838 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 12 [2020-09-11 23:42:19,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:19,838 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-09-11 23:42:19,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:42:19,838 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-09-11 23:42:19,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 23:42:19,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:19,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:19,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:42:19,840 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:19,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:19,841 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 1 times [2020-09-11 23:42:19,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:19,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016510930] [2020-09-11 23:42:19,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:19,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:19,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016510930] [2020-09-11 23:42:19,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:19,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:42:19,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1839987727] [2020-09-11 23:42:19,953 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:19,954 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:19,958 INFO L274 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-09-11 23:42:19,958 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:19,989 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:19,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:42:19,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:19,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:42:19,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:42:19,990 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-09-11 23:42:20,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:20,016 INFO L93 Difference]: Finished difference Result 158 states and 375 transitions. [2020-09-11 23:42:20,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:42:20,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 23:42:20,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:20,018 INFO L225 Difference]: With dead ends: 158 [2020-09-11 23:42:20,018 INFO L226 Difference]: Without dead ends: 104 [2020-09-11 23:42:20,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:42:20,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-11 23:42:20,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-11 23:42:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-11 23:42:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 244 transitions. [2020-09-11 23:42:20,025 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 244 transitions. Word has length 13 [2020-09-11 23:42:20,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:20,026 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 244 transitions. [2020-09-11 23:42:20,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:42:20,026 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 244 transitions. [2020-09-11 23:42:20,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 23:42:20,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:20,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:20,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:42:20,027 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:20,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:20,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 2 times [2020-09-11 23:42:20,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:20,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148515506] [2020-09-11 23:42:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:20,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148515506] [2020-09-11 23:42:20,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:20,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:42:20,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [224641575] [2020-09-11 23:42:20,104 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:20,106 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:20,109 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-09-11 23:42:20,109 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:20,151 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:42:20,169 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:20,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:42:20,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:20,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:42:20,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:42:20,170 INFO L87 Difference]: Start difference. First operand 104 states and 244 transitions. Second operand 4 states. [2020-09-11 23:42:20,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:20,207 INFO L93 Difference]: Finished difference Result 127 states and 275 transitions. [2020-09-11 23:42:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:42:20,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 23:42:20,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:20,208 INFO L225 Difference]: With dead ends: 127 [2020-09-11 23:42:20,208 INFO L226 Difference]: Without dead ends: 87 [2020-09-11 23:42:20,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:42:20,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-11 23:42:20,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-11 23:42:20,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-11 23:42:20,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 183 transitions. [2020-09-11 23:42:20,214 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 183 transitions. Word has length 13 [2020-09-11 23:42:20,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:20,214 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 183 transitions. [2020-09-11 23:42:20,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:42:20,215 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 183 transitions. [2020-09-11 23:42:20,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:42:20,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:20,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:20,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 23:42:20,216 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:20,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:20,217 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-09-11 23:42:20,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:20,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214376279] [2020-09-11 23:42:20,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:20,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214376279] [2020-09-11 23:42:20,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:20,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:42:20,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1331310004] [2020-09-11 23:42:20,291 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:20,293 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:20,297 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-09-11 23:42:20,298 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:20,403 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3211#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:42:20,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 23:42:20,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:20,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 23:42:20,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 23:42:20,404 INFO L87 Difference]: Start difference. First operand 87 states and 183 transitions. Second operand 6 states. [2020-09-11 23:42:20,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:20,472 INFO L93 Difference]: Finished difference Result 90 states and 175 transitions. [2020-09-11 23:42:20,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 23:42:20,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-11 23:42:20,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:20,474 INFO L225 Difference]: With dead ends: 90 [2020-09-11 23:42:20,474 INFO L226 Difference]: Without dead ends: 65 [2020-09-11 23:42:20,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:42:20,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-11 23:42:20,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-11 23:42:20,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-11 23:42:20,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 119 transitions. [2020-09-11 23:42:20,483 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 119 transitions. Word has length 14 [2020-09-11 23:42:20,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:20,484 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 119 transitions. [2020-09-11 23:42:20,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 23:42:20,484 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 119 transitions. [2020-09-11 23:42:20,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:42:20,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:20,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:20,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 23:42:20,485 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:20,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:20,486 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-09-11 23:42:20,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:20,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461655367] [2020-09-11 23:42:20,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:20,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:20,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461655367] [2020-09-11 23:42:20,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:20,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:42:20,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2022680062] [2020-09-11 23:42:20,609 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:20,611 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:20,615 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-09-11 23:42:20,615 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:20,634 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:42:20,729 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3440#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:42:20,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 23:42:20,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:20,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 23:42:20,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:42:20,730 INFO L87 Difference]: Start difference. First operand 65 states and 119 transitions. Second operand 7 states. [2020-09-11 23:42:20,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:20,793 INFO L93 Difference]: Finished difference Result 62 states and 111 transitions. [2020-09-11 23:42:20,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:42:20,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-11 23:42:20,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:20,794 INFO L225 Difference]: With dead ends: 62 [2020-09-11 23:42:20,794 INFO L226 Difference]: Without dead ends: 54 [2020-09-11 23:42:20,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-11 23:42:20,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-11 23:42:20,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-11 23:42:20,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-11 23:42:20,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-09-11 23:42:20,797 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-09-11 23:42:20,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:20,798 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-09-11 23:42:20,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 23:42:20,798 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-09-11 23:42:20,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:42:20,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:20,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:20,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 23:42:20,800 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:20,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:20,800 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-09-11 23:42:20,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:20,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106144354] [2020-09-11 23:42:20,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:20,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:20,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106144354] [2020-09-11 23:42:20,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:20,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:42:20,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1396657211] [2020-09-11 23:42:20,855 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:20,856 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:20,860 INFO L274 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-09-11 23:42:20,860 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:20,891 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:20,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:42:20,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:20,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:42:20,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:42:20,892 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-09-11 23:42:20,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:20,913 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-09-11 23:42:20,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:42:20,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:42:20,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:20,914 INFO L225 Difference]: With dead ends: 63 [2020-09-11 23:42:20,914 INFO L226 Difference]: Without dead ends: 35 [2020-09-11 23:42:20,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:42:20,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-11 23:42:20,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-11 23:42:20,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-11 23:42:20,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-11 23:42:20,917 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-11 23:42:20,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:20,917 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-11 23:42:20,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:42:20,918 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-11 23:42:20,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:42:20,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:20,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:20,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 23:42:20,919 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:20,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:20,919 INFO L82 PathProgramCache]: Analyzing trace with hash 361560856, now seen corresponding path program 2 times [2020-09-11 23:42:20,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:20,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388856067] [2020-09-11 23:42:20,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:20,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388856067] [2020-09-11 23:42:20,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:20,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:42:20,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [810745915] [2020-09-11 23:42:20,987 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:20,988 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:20,991 INFO L274 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-09-11 23:42:20,992 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:21,015 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:21,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:42:21,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:21,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:42:21,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:42:21,016 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-11 23:42:21,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:21,033 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2020-09-11 23:42:21,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:42:21,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:42:21,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:21,035 INFO L225 Difference]: With dead ends: 48 [2020-09-11 23:42:21,035 INFO L226 Difference]: Without dead ends: 30 [2020-09-11 23:42:21,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:42:21,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-11 23:42:21,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-11 23:42:21,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-11 23:42:21,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-09-11 23:42:21,038 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-09-11 23:42:21,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:21,038 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-09-11 23:42:21,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:42:21,038 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-09-11 23:42:21,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:42:21,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:21,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:21,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 23:42:21,039 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:21,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:21,040 INFO L82 PathProgramCache]: Analyzing trace with hash -550831814, now seen corresponding path program 3 times [2020-09-11 23:42:21,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:21,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023662335] [2020-09-11 23:42:21,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:21,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:21,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023662335] [2020-09-11 23:42:21,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:21,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:42:21,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1542245622] [2020-09-11 23:42:21,094 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:21,096 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:21,099 INFO L274 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-09-11 23:42:21,099 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:21,112 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:21,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:42:21,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:21,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:42:21,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:42:21,113 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-09-11 23:42:21,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:21,127 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-09-11 23:42:21,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:42:21,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:42:21,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:21,128 INFO L225 Difference]: With dead ends: 29 [2020-09-11 23:42:21,128 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:42:21,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:42:21,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:42:21,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:42:21,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:42:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:42:21,129 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 23:42:21,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:21,130 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:42:21,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:42:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:42:21,130 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:42:21,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-11 23:42:21,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:42:21 BasicIcfg [2020-09-11 23:42:21,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:42:21,137 INFO L168 Benchmark]: Toolchain (without parser) took 5413.30 ms. Allocated memory was 141.0 MB in the beginning and 276.8 MB in the end (delta: 135.8 MB). Free memory was 101.9 MB in the beginning and 215.2 MB in the end (delta: -113.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-11 23:42:21,138 INFO L168 Benchmark]: CDTParser took 1.02 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:42:21,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 769.85 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.2 MB in the beginning and 160.9 MB in the end (delta: -59.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:42:21,140 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.80 ms. Allocated memory is still 203.9 MB. Free memory was 160.9 MB in the beginning and 158.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-11 23:42:21,141 INFO L168 Benchmark]: Boogie Preprocessor took 30.67 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 157.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 23:42:21,142 INFO L168 Benchmark]: RCFGBuilder took 492.92 ms. Allocated memory is still 203.9 MB. Free memory was 157.1 MB in the beginning and 135.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-11 23:42:21,142 INFO L168 Benchmark]: TraceAbstraction took 4053.59 ms. Allocated memory was 203.9 MB in the beginning and 276.8 MB in the end (delta: 72.9 MB). Free memory was 134.4 MB in the beginning and 215.2 MB in the end (delta: -80.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:42:21,146 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 769.85 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.2 MB in the beginning and 160.9 MB in the end (delta: -59.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.80 ms. Allocated memory is still 203.9 MB. Free memory was 160.9 MB in the beginning and 158.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.67 ms. Allocated memory is still 203.9 MB. Free memory was 158.4 MB in the beginning and 157.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 492.92 ms. Allocated memory is still 203.9 MB. Free memory was 157.1 MB in the beginning and 135.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4053.59 ms. Allocated memory was 203.9 MB in the beginning and 276.8 MB in the end (delta: 72.9 MB). Free memory was 134.4 MB in the beginning and 215.2 MB in the end (delta: -80.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 657 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 214 SDtfs, 135 SDslu, 261 SDs, 0 SdLazy, 142 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 84 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 4725 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...