/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/safe009_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:34:02,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:34:02,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:34:02,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:34:02,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:34:02,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:34:02,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:34:02,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:34:02,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:34:02,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:34:02,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:34:02,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:34:02,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:34:02,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:34:02,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:34:02,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:34:02,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:34:02,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:34:02,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:34:02,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:34:02,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:34:02,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:34:02,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:34:02,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:34:02,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 23:34:02,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 23:34:02,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 23:34:02,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 23:34:02,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 23:34:02,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 23:34:02,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:34:02,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:34:02,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:34:02,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:34:02,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:34:02,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:34:02,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:34:02,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:34:02,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:34:02,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:34:02,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:34:02,634 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 23:34:02,692 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:34:02,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:34:02,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:34:02,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:34:02,697 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:34:02,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:34:02,698 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:34:02,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:34:02,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:34:02,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:34:02,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:34:02,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:34:02,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:34:02,699 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:34:02,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:34:02,700 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:34:02,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:34:02,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:34:02,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:34:02,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:34:02,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:34:02,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:34:02,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:34:02,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:34:02,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:34:02,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:34:02,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:34:02,707 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:34:02,707 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:34:02,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:34:02,708 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:34:03,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:34:03,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:34:03,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:34:03,226 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:34:03,228 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:34:03,231 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2020-09-11 23:34:03,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca382f0be/18eebef9bf854414b820fa9309010a8a/FLAG68da7dd82 [2020-09-11 23:34:03,954 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:34:03,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2020-09-11 23:34:03,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca382f0be/18eebef9bf854414b820fa9309010a8a/FLAG68da7dd82 [2020-09-11 23:34:04,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca382f0be/18eebef9bf854414b820fa9309010a8a [2020-09-11 23:34:04,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:34:04,210 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:34:04,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:34:04,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:34:04,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:34:04,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:34:04" (1/1) ... [2020-09-11 23:34:04,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67abc2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:34:04, skipping insertion in model container [2020-09-11 23:34:04,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:34:04" (1/1) ... [2020-09-11 23:34:04,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:34:04,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:34:04,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:34:04,830 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:34:04,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:34:04,984 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:34:04,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:34:04 WrapperNode [2020-09-11 23:34:04,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:34:04,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:34:04,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:34:04,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:34:04,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:34:04" (1/1) ... [2020-09-11 23:34:05,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:34:04" (1/1) ... [2020-09-11 23:34:05,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:34:05,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:34:05,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:34:05,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:34:05,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:34:04" (1/1) ... [2020-09-11 23:34:05,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:34:04" (1/1) ... [2020-09-11 23:34:05,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:34:04" (1/1) ... [2020-09-11 23:34:05,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:34:04" (1/1) ... [2020-09-11 23:34:05,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:34:04" (1/1) ... [2020-09-11 23:34:05,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:34:04" (1/1) ... [2020-09-11 23:34:05,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:34:04" (1/1) ... [2020-09-11 23:34:05,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:34:05,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:34:05,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:34:05,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:34:05,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:34:04" (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 23:34:05,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:34:05,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:34:05,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:34:05,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:34:05,159 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:34:05,160 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:34:05,160 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:34:05,160 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:34:05,160 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:34:05,160 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:34:05,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:34:05,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:34:05,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:34:05,164 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 23:34:05,519 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:34:05,520 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:34:05,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:34:05 BoogieIcfgContainer [2020-09-11 23:34:05,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:34:05,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:34:05,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:34:05,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:34:05,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:34:04" (1/3) ... [2020-09-11 23:34:05,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359132be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:34:05, skipping insertion in model container [2020-09-11 23:34:05,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:34:04" (2/3) ... [2020-09-11 23:34:05,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359132be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:34:05, skipping insertion in model container [2020-09-11 23:34:05,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:34:05" (3/3) ... [2020-09-11 23:34:05,535 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_tso.opt.i [2020-09-11 23:34:05,547 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:34:05,547 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:34:05,558 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:34:05,559 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:34:05,595 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,595 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,595 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,596 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,596 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,596 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,597 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,597 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,597 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,598 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,598 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,598 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,599 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,599 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,599 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,600 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,600 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,600 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,612 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,613 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,613 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,613 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,623 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,624 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,627 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,627 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,628 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,628 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:34:05,653 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 23:34:05,681 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:34:05,681 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:34:05,681 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:34:05,681 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:34:05,681 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:34:05,682 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:34:05,682 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:34:05,682 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:34:05,701 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-09-11 23:34:05,704 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-11 23:34:05,754 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-11 23:34:05,755 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:34:05,766 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-11 23:34:05,770 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-09-11 23:34:05,801 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-09-11 23:34:05,801 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:34:05,802 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-11 23:34:05,804 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1186 [2020-09-11 23:34:05,806 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:34:06,972 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-11 23:34:07,284 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1951 [2020-09-11 23:34:07,284 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-09-11 23:34:07,289 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-09-11 23:34:07,314 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 234 states. [2020-09-11 23:34:07,316 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-09-11 23:34:07,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:34:07,326 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:34:07,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:34:07,328 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:34:07,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:34:07,335 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 1 times [2020-09-11 23:34:07,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:34:07,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457155366] [2020-09-11 23:34:07,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:34:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:34:07,604 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 23:34:07,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457155366] [2020-09-11 23:34:07,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:34:07,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:34:07,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [188245642] [2020-09-11 23:34:07,609 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:34:07,612 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:34:07,630 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 23:34:07,630 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:34:07,632 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:34:07,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:34:07,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:34:07,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:34:07,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:34:07,652 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-09-11 23:34:07,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:34:07,712 INFO L93 Difference]: Finished difference Result 222 states and 615 transitions. [2020-09-11 23:34:07,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:34:07,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 23:34:07,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:34:07,733 INFO L225 Difference]: With dead ends: 222 [2020-09-11 23:34:07,733 INFO L226 Difference]: Without dead ends: 174 [2020-09-11 23:34:07,735 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 23:34:07,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-11 23:34:07,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-09-11 23:34:07,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-11 23:34:07,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 463 transitions. [2020-09-11 23:34:07,803 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 463 transitions. Word has length 8 [2020-09-11 23:34:07,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:34:07,805 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 463 transitions. [2020-09-11 23:34:07,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:34:07,805 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 463 transitions. [2020-09-11 23:34:07,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 23:34:07,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:34:07,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:34:07,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:34:07,807 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:34:07,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:34:07,807 INFO L82 PathProgramCache]: Analyzing trace with hash -273417231, now seen corresponding path program 1 times [2020-09-11 23:34:07,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:34:07,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006871947] [2020-09-11 23:34:07,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:34:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:34:07,912 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 23:34:07,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006871947] [2020-09-11 23:34:07,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:34:07,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:34:07,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [696999114] [2020-09-11 23:34:07,914 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:34:07,916 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:34:07,918 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-11 23:34:07,919 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:34:07,988 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:34:07,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:34:07,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:34:07,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:34:07,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:34:07,991 INFO L87 Difference]: Start difference. First operand 174 states and 463 transitions. Second operand 4 states. [2020-09-11 23:34:08,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:34:08,035 INFO L93 Difference]: Finished difference Result 240 states and 615 transitions. [2020-09-11 23:34:08,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:34:08,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 23:34:08,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:34:08,041 INFO L225 Difference]: With dead ends: 240 [2020-09-11 23:34:08,042 INFO L226 Difference]: Without dead ends: 138 [2020-09-11 23:34:08,043 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 23:34:08,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-11 23:34:08,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-09-11 23:34:08,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-11 23:34:08,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 351 transitions. [2020-09-11 23:34:08,070 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 351 transitions. Word has length 9 [2020-09-11 23:34:08,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:34:08,070 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 351 transitions. [2020-09-11 23:34:08,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:34:08,070 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 351 transitions. [2020-09-11 23:34:08,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 23:34:08,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:34:08,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:34:08,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:34:08,077 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:34:08,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:34:08,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1925064459, now seen corresponding path program 1 times [2020-09-11 23:34:08,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:34:08,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254119894] [2020-09-11 23:34:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:34:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:34:08,149 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 23:34:08,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254119894] [2020-09-11 23:34:08,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:34:08,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:34:08,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [148507715] [2020-09-11 23:34:08,150 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:34:08,151 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:34:08,153 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-09-11 23:34:08,153 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:34:08,164 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:34:08,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:34:08,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:34:08,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:34:08,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:34:08,165 INFO L87 Difference]: Start difference. First operand 138 states and 351 transitions. Second operand 3 states. [2020-09-11 23:34:08,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:34:08,172 INFO L93 Difference]: Finished difference Result 132 states and 332 transitions. [2020-09-11 23:34:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:34:08,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-11 23:34:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:34:08,174 INFO L225 Difference]: With dead ends: 132 [2020-09-11 23:34:08,174 INFO L226 Difference]: Without dead ends: 132 [2020-09-11 23:34:08,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 23:34:08,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-11 23:34:08,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-09-11 23:34:08,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-11 23:34:08,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-09-11 23:34:08,186 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 10 [2020-09-11 23:34:08,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:34:08,187 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-09-11 23:34:08,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:34:08,187 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-09-11 23:34:08,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:34:08,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:34:08,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:34:08,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:34:08,189 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:34:08,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:34:08,189 INFO L82 PathProgramCache]: Analyzing trace with hash 452543204, now seen corresponding path program 1 times [2020-09-11 23:34:08,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:34:08,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247352711] [2020-09-11 23:34:08,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:34:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:34:08,294 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 23:34:08,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247352711] [2020-09-11 23:34:08,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:34:08,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:34:08,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2105065476] [2020-09-11 23:34:08,296 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:34:08,297 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:34:08,299 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 31 transitions. [2020-09-11 23:34:08,300 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:34:08,357 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:34:08,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:34:08,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:34:08,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:34:08,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:34:08,359 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 4 states. [2020-09-11 23:34:08,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:34:08,380 INFO L93 Difference]: Finished difference Result 144 states and 346 transitions. [2020-09-11 23:34:08,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:34:08,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-11 23:34:08,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:34:08,382 INFO L225 Difference]: With dead ends: 144 [2020-09-11 23:34:08,382 INFO L226 Difference]: Without dead ends: 60 [2020-09-11 23:34:08,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 23:34:08,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-11 23:34:08,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-11 23:34:08,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-11 23:34:08,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2020-09-11 23:34:08,388 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 11 [2020-09-11 23:34:08,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:34:08,388 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2020-09-11 23:34:08,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:34:08,388 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2020-09-11 23:34:08,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 23:34:08,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:34:08,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:34:08,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:34:08,390 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:34:08,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:34:08,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 1 times [2020-09-11 23:34:08,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:34:08,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508869059] [2020-09-11 23:34:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:34:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:34:08,513 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 23:34:08,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508869059] [2020-09-11 23:34:08,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:34:08,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:34:08,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1883524957] [2020-09-11 23:34:08,518 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:34:08,519 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:34:08,523 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-09-11 23:34:08,523 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:34:08,561 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:34:08,586 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:34:08,602 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:34:08,617 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:34:08,622 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2315#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-11 23:34:08,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:34:08,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:34:08,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:34:08,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:34:08,624 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand 5 states. [2020-09-11 23:34:08,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:34:08,684 INFO L93 Difference]: Finished difference Result 59 states and 111 transitions. [2020-09-11 23:34:08,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:34:08,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-11 23:34:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:34:08,685 INFO L225 Difference]: With dead ends: 59 [2020-09-11 23:34:08,685 INFO L226 Difference]: Without dead ends: 38 [2020-09-11 23:34:08,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:34:08,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-11 23:34:08,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-11 23:34:08,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-11 23:34:08,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-09-11 23:34:08,690 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 12 [2020-09-11 23:34:08,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:34:08,690 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-09-11 23:34:08,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:34:08,690 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-09-11 23:34:08,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:34:08,691 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:34:08,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:34:08,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:34:08,692 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:34:08,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:34:08,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 1 times [2020-09-11 23:34:08,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:34:08,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296197665] [2020-09-11 23:34:08,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:34:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:34:08,776 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 23:34:08,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296197665] [2020-09-11 23:34:08,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:34:08,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:34:08,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1184477626] [2020-09-11 23:34:08,777 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:34:08,779 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:34:08,805 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-09-11 23:34:08,806 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:34:08,816 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:34:08,896 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [2461#(not (= 3 ~__unbuffered_cnt~0)), 2462#(not (= ~__unbuffered_cnt~0 2)), 2463#(not (= ~__unbuffered_cnt~0 1))] [2020-09-11 23:34:08,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 23:34:08,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:34:08,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 23:34:08,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-11 23:34:08,898 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 9 states. [2020-09-11 23:34:08,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:34:08,995 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-09-11 23:34:08,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:34:08,996 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-09-11 23:34:08,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:34:08,997 INFO L225 Difference]: With dead ends: 35 [2020-09-11 23:34:08,997 INFO L226 Difference]: Without dead ends: 29 [2020-09-11 23:34:08,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-11 23:34:08,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-11 23:34:09,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-11 23:34:09,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-11 23:34:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-09-11 23:34:09,001 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2020-09-11 23:34:09,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:34:09,001 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-09-11 23:34:09,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 23:34:09,002 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-09-11 23:34:09,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-11 23:34:09,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:34:09,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:34:09,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 23:34:09,005 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:34:09,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:34:09,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1250665313, now seen corresponding path program 1 times [2020-09-11 23:34:09,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:34:09,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010120936] [2020-09-11 23:34:09,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:34:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:34:09,070 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 23:34:09,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010120936] [2020-09-11 23:34:09,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:34:09,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:34:09,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [14913663] [2020-09-11 23:34:09,071 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:34:09,073 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:34:09,077 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 28 transitions. [2020-09-11 23:34:09,077 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:34:09,086 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:34:09,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:34:09,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:34:09,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:34:09,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:34:09,088 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 3 states. [2020-09-11 23:34:09,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:34:09,094 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-09-11 23:34:09,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:34:09,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-11 23:34:09,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:34:09,096 INFO L225 Difference]: With dead ends: 28 [2020-09-11 23:34:09,096 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:34:09,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 23:34:09,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:34:09,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:34:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:34:09,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:34:09,097 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-09-11 23:34:09,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:34:09,097 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:34:09,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:34:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:34:09,098 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:34:09,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 23:34:09,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:34:09 BasicIcfg [2020-09-11 23:34:09,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:34:09,106 INFO L168 Benchmark]: Toolchain (without parser) took 4899.27 ms. Allocated memory was 138.9 MB in the beginning and 249.6 MB in the end (delta: 110.6 MB). Free memory was 99.7 MB in the beginning and 186.7 MB in the end (delta: -86.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-09-11 23:34:09,107 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:34:09,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 773.49 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 99.1 MB in the beginning and 158.5 MB in the end (delta: -59.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-09-11 23:34:09,109 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.11 ms. Allocated memory is still 201.3 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:34:09,110 INFO L168 Benchmark]: Boogie Preprocessor took 31.28 ms. Allocated memory is still 201.3 MB. Free memory was 155.9 MB in the beginning and 154.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 23:34:09,110 INFO L168 Benchmark]: RCFGBuilder took 450.73 ms. Allocated memory is still 201.3 MB. Free memory was 154.5 MB in the beginning and 133.0 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-09-11 23:34:09,111 INFO L168 Benchmark]: TraceAbstraction took 3576.89 ms. Allocated memory was 201.3 MB in the beginning and 249.6 MB in the end (delta: 48.2 MB). Free memory was 132.3 MB in the beginning and 186.7 MB in the end (delta: -54.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:34:09,115 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 773.49 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 99.1 MB in the beginning and 158.5 MB in the end (delta: -59.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.11 ms. Allocated memory is still 201.3 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.28 ms. Allocated memory is still 201.3 MB. Free memory was 155.9 MB in the beginning and 154.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.73 ms. Allocated memory is still 201.3 MB. Free memory was 154.5 MB in the beginning and 133.0 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3576.89 ms. Allocated memory was 201.3 MB in the beginning and 249.6 MB in the end (delta: 48.2 MB). Free memory was 132.3 MB in the beginning and 186.7 MB in the end (delta: -54.4 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: 1.5s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1186 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 606 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1951 CheckedPairsTotal, 54 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 113 SDtfs, 89 SDslu, 126 SDs, 0 SdLazy, 101 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 2391 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...