/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:23:58,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:23:58,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:23:58,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:23:58,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:23:58,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:23:58,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:23:58,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:23:58,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:23:58,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:23:58,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:23:58,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:23:58,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:23:58,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:23:58,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:23:58,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:23:58,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:23:58,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:23:58,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:23:58,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:23:58,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:23:58,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:23:58,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:23:58,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:23:58,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:23:58,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:23:58,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:23:58,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:23:58,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:23:58,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:23:58,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:23:58,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:23:58,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:23:58,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:23:58,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:23:58,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:23:58,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:23:58,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:23:58,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:23:58,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:23:58,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:23:58,066 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:23:58,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:23:58,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:23:58,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:23:58,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:23:58,091 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:23:58,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:23:58,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:23:58,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:23:58,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:23:58,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:23:58,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:23:58,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:23:58,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:23:58,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:23:58,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:23:58,094 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:23:58,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:23:58,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:23:58,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:23:58,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:23:58,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:23:58,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:23:58,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:23:58,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:23:58,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:23:58,097 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:23:58,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:23:58,097 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:23:58,098 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:23:58,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:23:58,099 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:23:58,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:23:58,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:23:58,424 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:23:58,426 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:23:58,426 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:23:58,427 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i [2020-04-18 15:23:58,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97dcae74a/50e46c86555445eab32e463bbf60ecc8/FLAGab3d7207f [2020-04-18 15:23:59,032 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:23:59,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i [2020-04-18 15:23:59,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97dcae74a/50e46c86555445eab32e463bbf60ecc8/FLAGab3d7207f [2020-04-18 15:23:59,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97dcae74a/50e46c86555445eab32e463bbf60ecc8 [2020-04-18 15:23:59,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:23:59,361 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:23:59,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:23:59,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:23:59,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:23:59,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:23:59" (1/1) ... [2020-04-18 15:23:59,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f87ec12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:23:59, skipping insertion in model container [2020-04-18 15:23:59,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:23:59" (1/1) ... [2020-04-18 15:23:59,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:23:59,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:23:59,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:23:59,966 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:24:00,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:24:00,099 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:24:00,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:24:00 WrapperNode [2020-04-18 15:24:00,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:24:00,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:24:00,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:24:00,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:24:00,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:24:00" (1/1) ... [2020-04-18 15:24:00,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:24:00" (1/1) ... [2020-04-18 15:24:00,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:24:00,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:24:00,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:24:00,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:24:00,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:24:00" (1/1) ... [2020-04-18 15:24:00,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:24:00" (1/1) ... [2020-04-18 15:24:00,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:24:00" (1/1) ... [2020-04-18 15:24:00,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:24:00" (1/1) ... [2020-04-18 15:24:00,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:24:00" (1/1) ... [2020-04-18 15:24:00,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:24:00" (1/1) ... [2020-04-18 15:24:00,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:24:00" (1/1) ... [2020-04-18 15:24:00,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:24:00,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:24:00,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:24:00,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:24:00,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:24:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:24:00,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:24:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:24:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:24:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:24:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:24:00,244 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:24:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:24:00,245 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:24:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:24:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:24:00,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:24:00,248 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 15:24:00,610 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:24:00,610 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:24:00,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:24:00 BoogieIcfgContainer [2020-04-18 15:24:00,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:24:00,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:24:00,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:24:00,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:24:00,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:23:59" (1/3) ... [2020-04-18 15:24:00,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7c7bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:24:00, skipping insertion in model container [2020-04-18 15:24:00,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:24:00" (2/3) ... [2020-04-18 15:24:00,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7c7bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:24:00, skipping insertion in model container [2020-04-18 15:24:00,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:24:00" (3/3) ... [2020-04-18 15:24:00,623 INFO L109 eAbstractionObserver]: Analyzing ICFG safe022_tso.opt.i [2020-04-18 15:24:00,631 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:24:00,631 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:24:00,638 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:24:00,639 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:24:00,664 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,664 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,664 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,665 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,665 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,666 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,666 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,666 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,667 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,667 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,667 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,668 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,671 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,672 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,672 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,672 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,678 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,678 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,679 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,679 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:24:00,692 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 15:24:00,708 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:24:00,708 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:24:00,708 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:24:00,709 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:24:00,709 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:24:00,709 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:24:00,709 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:24:00,709 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:24:00,722 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 122 flow [2020-04-18 15:24:00,723 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 15:24:00,760 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-18 15:24:00,761 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:24:00,765 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 15:24:00,768 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 15:24:00,787 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-18 15:24:00,788 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:24:00,789 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 15:24:00,790 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 15:24:00,792 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:24:02,125 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1165 [2020-04-18 15:24:02,125 INFO L214 etLargeBlockEncoding]: Total number of compositions: 48 [2020-04-18 15:24:02,129 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 15:24:02,142 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 15:24:02,145 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 15:24:02,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 15:24:02,154 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:24:02,155 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 15:24:02,155 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:24:02,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:24:02,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1988358065, now seen corresponding path program 1 times [2020-04-18 15:24:02,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:24:02,169 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [912935395] [2020-04-18 15:24:02,183 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:24:02,195 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 15:24:02,197 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 15:24:02,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 15:24:02,197 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:24:02,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:24:02,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1988358065, now seen corresponding path program 2 times [2020-04-18 15:24:02,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:24:02,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096556722] [2020-04-18 15:24:02,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:24:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:24:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:24:02,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096556722] [2020-04-18 15:24:02,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:24:02,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:24:02,436 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:24:02,439 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:24:02,441 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 15:24:02,441 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:24:02,455 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:24:02,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:24:02,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:24:02,461 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-04-18 15:24:02,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:24:02,466 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-18 15:24:02,466 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-18 15:24:02,467 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:24:02,468 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [912935395] [2020-04-18 15:24:02,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:24:02,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:24:02,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [912935395] [2020-04-18 15:24:02,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:24:02,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:24:02,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:24:02,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:24:02,478 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 15:24:02,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:24:02,507 INFO L93 Difference]: Finished difference Result 70 states and 149 transitions. [2020-04-18 15:24:02,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:24:02,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 15:24:02,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:24:02,531 INFO L225 Difference]: With dead ends: 70 [2020-04-18 15:24:02,536 INFO L226 Difference]: Without dead ends: 54 [2020-04-18 15:24:02,538 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:24:02,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-04-18 15:24:02,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-04-18 15:24:02,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-04-18 15:24:02,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2020-04-18 15:24:02,581 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 6 [2020-04-18 15:24:02,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:24:02,582 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2020-04-18 15:24:02,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:24:02,582 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2020-04-18 15:24:02,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 15:24:02,583 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:24:02,583 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:24:02,583 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:24:02,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:24:02,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1509525162, now seen corresponding path program 1 times [2020-04-18 15:24:02,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:24:02,584 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1163079750] [2020-04-18 15:24:02,585 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:24:02,585 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 11 transitions. [2020-04-18 15:24:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 15:24:02,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 15:24:02,586 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:24:02,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:24:02,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1509525162, now seen corresponding path program 2 times [2020-04-18 15:24:02,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:24:02,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477335341] [2020-04-18 15:24:02,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:24:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:24:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:24:02,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477335341] [2020-04-18 15:24:02,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:24:02,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:24:02,678 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:24:02,678 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:24:02,680 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 9 transitions. [2020-04-18 15:24:02,682 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:24:02,691 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:24:02,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:24:02,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:24:02,691 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-04-18 15:24:02,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:24:02,706 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2020-04-18 15:24:02,706 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-04-18 15:24:02,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:24:02,707 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1163079750] [2020-04-18 15:24:02,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:24:02,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:24:02,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1163079750] [2020-04-18 15:24:02,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:24:02,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:24:02,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:24:02,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:24:02,710 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand 4 states. [2020-04-18 15:24:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:24:02,726 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2020-04-18 15:24:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:24:02,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-04-18 15:24:02,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:24:02,727 INFO L225 Difference]: With dead ends: 60 [2020-04-18 15:24:02,727 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 15:24:02,729 INFO L678 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 [2020-04-18 15:24:02,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 15:24:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 15:24:02,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 15:24:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-04-18 15:24:02,734 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 7 [2020-04-18 15:24:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:24:02,735 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-04-18 15:24:02,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:24:02,735 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-04-18 15:24:02,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:24:02,736 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:24:02,736 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:24:02,736 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:24:02,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:24:02,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1014872071, now seen corresponding path program 1 times [2020-04-18 15:24:02,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:24:02,737 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2040347439] [2020-04-18 15:24:02,738 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:24:02,739 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 45 transitions. [2020-04-18 15:24:02,739 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-04-18 15:24:02,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:24:02,740 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:24:02,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:24:02,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1045260811, now seen corresponding path program 2 times [2020-04-18 15:24:02,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:24:02,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454713530] [2020-04-18 15:24:02,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:24:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:24:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:24:02,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454713530] [2020-04-18 15:24:02,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:24:02,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:24:02,786 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:24:02,786 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:24:02,788 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 28 transitions. [2020-04-18 15:24:02,788 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:24:02,809 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:24:02,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:24:02,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:24:02,810 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 4 states. [2020-04-18 15:24:02,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:24:02,822 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2020-04-18 15:24:02,822 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 47 transitions. [2020-04-18 15:24:02,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:24:02,823 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:24:02,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:24:02,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1014872071, now seen corresponding path program 3 times [2020-04-18 15:24:02,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:24:02,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662412856] [2020-04-18 15:24:02,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:24:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:24:02,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:24:02,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662412856] [2020-04-18 15:24:02,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:24:02,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:24:02,886 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:24:02,886 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:24:02,889 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-04-18 15:24:02,889 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:24:02,902 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:24:02,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:24:02,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:24:02,903 INFO L87 Difference]: Start difference. First operand 29 states and 47 transitions. Second operand 4 states. [2020-04-18 15:24:02,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:24:02,912 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2020-04-18 15:24:02,913 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 47 transitions. [2020-04-18 15:24:02,913 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:24:02,914 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2040347439] [2020-04-18 15:24:02,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:24:02,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:24:02,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2040347439] [2020-04-18 15:24:02,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:24:02,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:24:02,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:24:02,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:24:02,915 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 6 states. [2020-04-18 15:24:03,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:24:03,012 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-04-18 15:24:03,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:24:03,012 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-04-18 15:24:03,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:24:03,013 INFO L225 Difference]: With dead ends: 39 [2020-04-18 15:24:03,013 INFO L226 Difference]: Without dead ends: 29 [2020-04-18 15:24:03,014 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:24:03,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-18 15:24:03,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-18 15:24:03,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-18 15:24:03,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 44 transitions. [2020-04-18 15:24:03,018 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 44 transitions. Word has length 9 [2020-04-18 15:24:03,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:24:03,018 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 44 transitions. [2020-04-18 15:24:03,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:24:03,018 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2020-04-18 15:24:03,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:24:03,019 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:24:03,019 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:24:03,020 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:24:03,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:24:03,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1964607327, now seen corresponding path program 1 times [2020-04-18 15:24:03,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:24:03,021 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2081745399] [2020-04-18 15:24:03,021 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:24:03,022 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 62 transitions. [2020-04-18 15:24:03,023 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 15:24:03,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:24:03,024 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:24:03,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:24:03,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1925340867, now seen corresponding path program 2 times [2020-04-18 15:24:03,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:24:03,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117156210] [2020-04-18 15:24:03,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:24:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:24:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:24:03,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117156210] [2020-04-18 15:24:03,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:24:03,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:24:03,077 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:24:03,078 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:24:03,079 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 15:24:03,079 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:24:03,090 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:24:03,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:24:03,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:24:03,091 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-04-18 15:24:03,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:24:03,111 INFO L93 Difference]: Finished difference Result 40 states and 69 transitions. [2020-04-18 15:24:03,111 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 69 transitions. [2020-04-18 15:24:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:24:03,112 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:24:03,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:24:03,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1964607327, now seen corresponding path program 3 times [2020-04-18 15:24:03,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:24:03,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171367898] [2020-04-18 15:24:03,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:24:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:24:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:24:03,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171367898] [2020-04-18 15:24:03,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:24:03,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:24:03,181 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:24:03,182 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:24:03,185 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-04-18 15:24:03,186 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:24:03,249 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:24:03,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:24:03,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:24:03,250 INFO L87 Difference]: Start difference. First operand 40 states and 69 transitions. Second operand 6 states. [2020-04-18 15:24:03,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:24:03,276 INFO L93 Difference]: Finished difference Result 40 states and 69 transitions. [2020-04-18 15:24:03,277 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 69 transitions. [2020-04-18 15:24:03,277 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:24:03,277 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2081745399] [2020-04-18 15:24:03,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:24:03,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:24:03,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2081745399] [2020-04-18 15:24:03,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:24:03,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:24:03,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:24:03,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:24:03,279 INFO L87 Difference]: Start difference. First operand 29 states and 44 transitions. Second operand 8 states. [2020-04-18 15:24:03,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:24:03,385 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2020-04-18 15:24:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 15:24:03,385 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-04-18 15:24:03,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:24:03,386 INFO L225 Difference]: With dead ends: 27 [2020-04-18 15:24:03,386 INFO L226 Difference]: Without dead ends: 22 [2020-04-18 15:24:03,387 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:24:03,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-04-18 15:24:03,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-04-18 15:24:03,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-04-18 15:24:03,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-04-18 15:24:03,392 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 10 [2020-04-18 15:24:03,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:24:03,392 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-04-18 15:24:03,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:24:03,393 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-04-18 15:24:03,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:24:03,393 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:24:03,393 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:24:03,393 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:24:03,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:24:03,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1799382783, now seen corresponding path program 1 times [2020-04-18 15:24:03,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:24:03,394 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2135043866] [2020-04-18 15:24:03,395 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:24:03,395 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 120 transitions. [2020-04-18 15:24:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-04-18 15:24:03,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:24:03,397 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:24:03,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:24:03,398 INFO L82 PathProgramCache]: Analyzing trace with hash -187338591, now seen corresponding path program 2 times [2020-04-18 15:24:03,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:24:03,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685287255] [2020-04-18 15:24:03,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:24:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:24:03,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:24:03,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685287255] [2020-04-18 15:24:03,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:24:03,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:24:03,435 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:24:03,436 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:24:03,438 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-04-18 15:24:03,438 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:24:03,444 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:24:03,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:24:03,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:24:03,445 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-04-18 15:24:03,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:24:03,463 INFO L93 Difference]: Finished difference Result 76 states and 153 transitions. [2020-04-18 15:24:03,463 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 153 transitions. [2020-04-18 15:24:03,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:24:03,464 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:24:03,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:24:03,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1799382783, now seen corresponding path program 3 times [2020-04-18 15:24:03,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:24:03,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847303516] [2020-04-18 15:24:03,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:24:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:24:03,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:24:03,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847303516] [2020-04-18 15:24:03,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:24:03,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:24:03,508 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:24:03,510 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:24:03,512 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 15:24:03,512 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:24:03,556 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:24:03,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:24:03,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:24:03,557 INFO L87 Difference]: Start difference. First operand 76 states and 153 transitions. Second operand 5 states. [2020-04-18 15:24:03,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:24:03,577 INFO L93 Difference]: Finished difference Result 104 states and 197 transitions. [2020-04-18 15:24:03,577 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 197 transitions. [2020-04-18 15:24:03,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:24:03,582 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:24:03,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:24:03,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1797964863, now seen corresponding path program 4 times [2020-04-18 15:24:03,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:24:03,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987080175] [2020-04-18 15:24:03,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:24:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:24:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:24:03,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987080175] [2020-04-18 15:24:03,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:24:03,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:24:03,667 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:24:03,668 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:24:03,670 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 15:24:03,670 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:24:03,723 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:24:03,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:24:03,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:24:03,724 INFO L87 Difference]: Start difference. First operand 104 states and 197 transitions. Second operand 6 states. [2020-04-18 15:24:03,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:24:03,780 INFO L93 Difference]: Finished difference Result 110 states and 200 transitions. [2020-04-18 15:24:03,780 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 200 transitions. [2020-04-18 15:24:03,781 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:24:03,782 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2135043866] [2020-04-18 15:24:03,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:24:03,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:24:03,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2135043866] [2020-04-18 15:24:03,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 15:24:03,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:24:03,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 15:24:03,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:24:03,786 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 11 states. [2020-04-18 15:24:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:24:03,916 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-04-18 15:24:03,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:24:03,917 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-04-18 15:24:03,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:24:03,917 INFO L225 Difference]: With dead ends: 21 [2020-04-18 15:24:03,917 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:24:03,918 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2020-04-18 15:24:03,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:24:03,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:24:03,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:24:03,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:24:03,919 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-18 15:24:03,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:24:03,920 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:24:03,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 15:24:03,920 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:24:03,920 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:24:03,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:24:03 BasicIcfg [2020-04-18 15:24:03,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:24:03,926 INFO L168 Benchmark]: Toolchain (without parser) took 4579.22 ms. Allocated memory was 144.7 MB in the beginning and 249.0 MB in the end (delta: 104.3 MB). Free memory was 100.8 MB in the beginning and 180.1 MB in the end (delta: -79.4 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:24:03,927 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 15:24:03,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 737.97 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 98.8 MB in the beginning and 156.4 MB in the end (delta: -57.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:24:03,929 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.31 ms. Allocated memory is still 201.3 MB. Free memory was 156.4 MB in the beginning and 154.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:24:03,929 INFO L168 Benchmark]: Boogie Preprocessor took 25.00 ms. Allocated memory is still 201.3 MB. Free memory was 154.3 MB in the beginning and 152.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:24:03,930 INFO L168 Benchmark]: RCFGBuilder took 432.72 ms. Allocated memory is still 201.3 MB. Free memory was 152.9 MB in the beginning and 132.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:24:03,931 INFO L168 Benchmark]: TraceAbstraction took 3308.02 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 132.0 MB in the beginning and 180.1 MB in the end (delta: -48.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:24:03,935 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 737.97 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 98.8 MB in the beginning and 156.4 MB in the end (delta: -57.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.31 ms. Allocated memory is still 201.3 MB. Free memory was 156.4 MB in the beginning and 154.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.00 ms. Allocated memory is still 201.3 MB. Free memory was 154.3 MB in the beginning and 152.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 432.72 ms. Allocated memory is still 201.3 MB. Free memory was 152.9 MB in the beginning and 132.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3308.02 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 132.0 MB in the beginning and 180.1 MB in the end (delta: -48.1 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: 1.4s, 61 ProgramPointsBefore, 22 ProgramPointsAfterwards, 56 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 350 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1165 CheckedPairsTotal, 48 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 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 57 SDtfs, 92 SDslu, 89 SDs, 0 SdLazy, 115 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...