/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-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:14:57,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:14:57,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:14:57,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:14:57,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:14:57,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:14:57,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:14:57,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:14:57,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:14:57,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:14:57,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:14:57,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:14:57,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:14:57,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:14:57,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:14:57,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:14:57,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:14:57,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:14:57,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:14:57,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:14:57,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:14:57,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:14:57,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:14:57,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:14:57,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 02:14:57,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 02:14:57,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 02:14:57,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 02:14:57,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 02:14:57,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 02:14:57,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:14:57,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:14:57,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:14:57,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:14:57,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:14:57,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:14:57,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:14:57,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:14:57,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:14:57,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:14:57,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:14:57,306 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-10-22 02:14:57,329 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:14:57,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:14:57,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:14:57,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:14:57,331 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:14:57,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:14:57,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:14:57,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:14:57,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:14:57,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:14:57,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:14:57,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:14:57,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:14:57,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:14:57,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:14:57,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:14:57,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:14:57,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:14:57,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:14:57,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:14:57,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:14:57,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:14:57,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:14:57,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:14:57,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:14:57,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:14:57,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:14:57,336 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:14:57,336 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:14:57,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:14:57,336 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:14:57,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:14:57,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:14:57,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:14:57,618 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:14:57,618 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:14:57,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-10-22 02:14:57,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95af3881b/377bff14d2cb46029b9299dc887977eb/FLAGc6bfdbe7d [2020-10-22 02:14:58,241 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:14:58,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-10-22 02:14:58,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95af3881b/377bff14d2cb46029b9299dc887977eb/FLAGc6bfdbe7d [2020-10-22 02:14:58,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95af3881b/377bff14d2cb46029b9299dc887977eb [2020-10-22 02:14:58,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:14:58,555 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:14:58,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:14:58,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:14:58,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:14:58,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:14:58" (1/1) ... [2020-10-22 02:14:58,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e2f7a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:14:58, skipping insertion in model container [2020-10-22 02:14:58,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:14:58" (1/1) ... [2020-10-22 02:14:58,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:14:58,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:14:59,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:14:59,106 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:14:59,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:14:59,226 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:14:59,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:14:59 WrapperNode [2020-10-22 02:14:59,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:14:59,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:14:59,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:14:59,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:14:59,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:14:59" (1/1) ... [2020-10-22 02:14:59,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:14:59" (1/1) ... [2020-10-22 02:14:59,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:14:59,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:14:59,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:14:59,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:14:59,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:14:59" (1/1) ... [2020-10-22 02:14:59,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:14:59" (1/1) ... [2020-10-22 02:14:59,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:14:59" (1/1) ... [2020-10-22 02:14:59,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:14:59" (1/1) ... [2020-10-22 02:14:59,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:14:59" (1/1) ... [2020-10-22 02:14:59,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:14:59" (1/1) ... [2020-10-22 02:14:59,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:14:59" (1/1) ... [2020-10-22 02:14:59,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:14:59,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:14:59,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:14:59,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:14:59,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:14:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:14:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:14:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 02:14:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:14:59,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:14:59,369 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 02:14:59,369 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 02:14:59,370 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 02:14:59,370 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 02:14:59,371 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 02:14:59,371 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 02:14:59,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 02:14:59,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 02:14:59,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:14:59,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:14:59,375 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 02:14:59,753 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:14:59,753 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 02:14:59,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:14:59 BoogieIcfgContainer [2020-10-22 02:14:59,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:14:59,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:14:59,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:14:59,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:14:59,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:14:58" (1/3) ... [2020-10-22 02:14:59,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c8f410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:14:59, skipping insertion in model container [2020-10-22 02:14:59,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:14:59" (2/3) ... [2020-10-22 02:14:59,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c8f410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:14:59, skipping insertion in model container [2020-10-22 02:14:59,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:14:59" (3/3) ... [2020-10-22 02:14:59,775 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2020-10-22 02:14:59,786 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:14:59,786 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:14:59,795 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:14:59,796 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:14:59,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,825 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,825 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,826 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,826 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,826 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,827 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,827 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,828 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,829 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,829 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,829 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,829 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,830 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,834 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,834 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,834 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,835 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,841 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,841 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,842 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,842 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,845 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,845 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,845 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,845 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:14:59,848 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:14:59,862 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-22 02:14:59,883 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:14:59,884 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:14:59,884 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:14:59,884 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:14:59,884 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:14:59,884 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:14:59,885 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:14:59,885 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:14:59,899 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:14:59,900 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 80 transitions, 175 flow [2020-10-22 02:14:59,903 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 80 transitions, 175 flow [2020-10-22 02:14:59,905 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 175 flow [2020-10-22 02:14:59,954 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-10-22 02:14:59,955 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 02:14:59,960 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-22 02:14:59,963 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-22 02:15:01,799 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-22 02:15:01,984 INFO L131 LiptonReduction]: Checked pairs total: 2810 [2020-10-22 02:15:01,985 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-10-22 02:15:01,991 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-22 02:15:02,020 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-22 02:15:02,022 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-22 02:15:02,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 02:15:02,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:02,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:02,041 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:02,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:02,048 INFO L82 PathProgramCache]: Analyzing trace with hash -853874994, now seen corresponding path program 1 times [2020-10-22 02:15:02,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:02,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70148162] [2020-10-22 02:15:02,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:02,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:02,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70148162] [2020-10-22 02:15:02,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:02,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:15:02,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1506064892] [2020-10-22 02:15:02,305 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:02,308 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:02,323 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 02:15:02,323 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:02,327 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:02,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:15:02,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:02,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:15:02,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:02,345 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-22 02:15:02,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:02,397 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-22 02:15:02,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:15:02,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-22 02:15:02,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:02,414 INFO L225 Difference]: With dead ends: 282 [2020-10-22 02:15:02,414 INFO L226 Difference]: Without dead ends: 218 [2020-10-22 02:15:02,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:02,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-22 02:15:02,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-22 02:15:02,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-22 02:15:02,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-22 02:15:02,479 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-22 02:15:02,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:02,480 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-22 02:15:02,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:15:02,481 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-22 02:15:02,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 02:15:02,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:02,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:02,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:15:02,483 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:02,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:02,483 INFO L82 PathProgramCache]: Analyzing trace with hash -700352928, now seen corresponding path program 1 times [2020-10-22 02:15:02,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:02,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519810497] [2020-10-22 02:15:02,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:02,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519810497] [2020-10-22 02:15:02,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:02,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:15:02,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [584519053] [2020-10-22 02:15:02,579 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:02,580 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:02,583 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-10-22 02:15:02,583 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:02,628 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:02,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:15:02,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:02,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:15:02,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:15:02,631 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-22 02:15:02,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:02,674 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-22 02:15:02,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:15:02,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-22 02:15:02,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:02,676 INFO L225 Difference]: With dead ends: 242 [2020-10-22 02:15:02,676 INFO L226 Difference]: Without dead ends: 146 [2020-10-22 02:15:02,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:15:02,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-22 02:15:02,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-22 02:15:02,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-22 02:15:02,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-22 02:15:02,703 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-10-22 02:15:02,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:02,703 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-22 02:15:02,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:15:02,703 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-22 02:15:02,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 02:15:02,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:02,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:02,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:15:02,708 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:02,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:02,709 INFO L82 PathProgramCache]: Analyzing trace with hash 2063010818, now seen corresponding path program 1 times [2020-10-22 02:15:02,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:02,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310391864] [2020-10-22 02:15:02,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:02,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:02,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310391864] [2020-10-22 02:15:02,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:02,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:15:02,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1755061470] [2020-10-22 02:15:02,781 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:02,782 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:02,785 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-10-22 02:15:02,785 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:02,850 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:02,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:15:02,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:02,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:15:02,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:02,852 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-22 02:15:02,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:02,858 INFO L93 Difference]: Finished difference Result 140 states and 343 transitions. [2020-10-22 02:15:02,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:15:02,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-22 02:15:02,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:02,860 INFO L225 Difference]: With dead ends: 140 [2020-10-22 02:15:02,860 INFO L226 Difference]: Without dead ends: 140 [2020-10-22 02:15:02,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:15:02,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-22 02:15:02,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-22 02:15:02,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-22 02:15:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 343 transitions. [2020-10-22 02:15:02,871 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 343 transitions. Word has length 11 [2020-10-22 02:15:02,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:02,872 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 343 transitions. [2020-10-22 02:15:02,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:15:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 343 transitions. [2020-10-22 02:15:02,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 02:15:02,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:02,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:02,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 02:15:02,874 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:02,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:02,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1374781277, now seen corresponding path program 1 times [2020-10-22 02:15:02,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:02,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085552708] [2020-10-22 02:15:02,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:02,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:02,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085552708] [2020-10-22 02:15:02,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:02,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:15:02,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1502892923] [2020-10-22 02:15:02,929 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:02,930 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:02,935 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-10-22 02:15:02,935 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:03,201 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:03,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:15:03,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:03,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:15:03,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:15:03,203 INFO L87 Difference]: Start difference. First operand 140 states and 343 transitions. Second operand 4 states. [2020-10-22 02:15:03,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:03,230 INFO L93 Difference]: Finished difference Result 158 states and 376 transitions. [2020-10-22 02:15:03,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:15:03,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-22 02:15:03,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:03,232 INFO L225 Difference]: With dead ends: 158 [2020-10-22 02:15:03,232 INFO L226 Difference]: Without dead ends: 68 [2020-10-22 02:15:03,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:15:03,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-22 02:15:03,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-22 02:15:03,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-22 02:15:03,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-22 02:15:03,238 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-10-22 02:15:03,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:03,239 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-22 02:15:03,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:15:03,239 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-22 02:15:03,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:15:03,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:03,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:03,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 02:15:03,241 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:03,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:03,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1721558133, now seen corresponding path program 1 times [2020-10-22 02:15:03,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:03,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59781793] [2020-10-22 02:15:03,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:03,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:03,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59781793] [2020-10-22 02:15:03,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:03,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:15:03,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [995145601] [2020-10-22 02:15:03,335 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:03,336 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:03,339 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-22 02:15:03,340 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:03,423 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 02:15:03,450 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2674#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-22 02:15:03,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:15:03,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:03,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:15:03,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:15:03,452 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 5 states. [2020-10-22 02:15:03,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:03,510 INFO L93 Difference]: Finished difference Result 67 states and 126 transitions. [2020-10-22 02:15:03,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:15:03,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-22 02:15:03,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:03,511 INFO L225 Difference]: With dead ends: 67 [2020-10-22 02:15:03,512 INFO L226 Difference]: Without dead ends: 45 [2020-10-22 02:15:03,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:15:03,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-22 02:15:03,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-22 02:15:03,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-22 02:15:03,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-22 02:15:03,515 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 13 [2020-10-22 02:15:03,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:03,534 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-22 02:15:03,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:15:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-22 02:15:03,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 02:15:03,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:03,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:03,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 02:15:03,536 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:03,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:03,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1799830367, now seen corresponding path program 1 times [2020-10-22 02:15:03,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:03,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580526782] [2020-10-22 02:15:03,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:03,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:03,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580526782] [2020-10-22 02:15:03,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:03,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:15:03,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1363412939] [2020-10-22 02:15:03,603 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:03,604 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:03,608 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 29 transitions. [2020-10-22 02:15:03,608 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:03,627 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 02:15:03,678 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [2842#(not (= 3 ~__unbuffered_cnt~0)), 2843#(not (= ~__unbuffered_cnt~0 2)), 2844#(not (= ~__unbuffered_cnt~0 1))] [2020-10-22 02:15:03,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 02:15:03,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:03,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 02:15:03,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-22 02:15:03,680 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 9 states. [2020-10-22 02:15:03,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:03,743 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-22 02:15:03,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:15:03,743 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-22 02:15:03,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:03,744 INFO L225 Difference]: With dead ends: 42 [2020-10-22 02:15:03,744 INFO L226 Difference]: Without dead ends: 36 [2020-10-22 02:15:03,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-22 02:15:03,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-22 02:15:03,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-22 02:15:03,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-22 02:15:03,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-22 02:15:03,747 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-22 02:15:03,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:03,748 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-22 02:15:03,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 02:15:03,748 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-22 02:15:03,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 02:15:03,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:15:03,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:15:03,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 02:15:03,749 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:15:03,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:15:03,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1269131745, now seen corresponding path program 1 times [2020-10-22 02:15:03,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:15:03,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120904781] [2020-10-22 02:15:03,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:15:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:15:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:15:03,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120904781] [2020-10-22 02:15:03,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:15:03,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:15:03,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1691066141] [2020-10-22 02:15:03,793 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:15:03,795 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:15:03,800 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 33 transitions. [2020-10-22 02:15:03,800 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:15:03,856 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:15:03,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:15:03,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:15:03,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:15:03,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:15:03,857 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-22 02:15:03,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:15:03,867 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-22 02:15:03,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:15:03,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-22 02:15:03,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:15:03,868 INFO L225 Difference]: With dead ends: 35 [2020-10-22 02:15:03,868 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 02:15:03,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:15:03,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 02:15:03,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 02:15:03,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 02:15:03,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 02:15:03,869 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-22 02:15:03,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:15:03,870 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 02:15:03,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:15:03,870 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 02:15:03,870 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 02:15:03,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 02:15:03,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:15:03 BasicIcfg [2020-10-22 02:15:03,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 02:15:03,876 INFO L168 Benchmark]: Toolchain (without parser) took 5326.47 ms. Allocated memory was 138.9 MB in the beginning and 284.7 MB in the end (delta: 145.8 MB). Free memory was 100.2 MB in the beginning and 198.0 MB in the end (delta: -97.8 MB). Peak memory consumption was 47.9 MB. Max. memory is 7.1 GB. [2020-10-22 02:15:03,877 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-22 02:15:03,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.57 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 99.1 MB in the beginning and 157.9 MB in the end (delta: -58.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-10-22 02:15:03,879 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.24 ms. Allocated memory is still 201.9 MB. Free memory was 157.2 MB in the beginning and 155.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 02:15:03,880 INFO L168 Benchmark]: Boogie Preprocessor took 25.28 ms. Allocated memory is still 201.9 MB. Free memory was 155.2 MB in the beginning and 153.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-22 02:15:03,880 INFO L168 Benchmark]: RCFGBuilder took 451.83 ms. Allocated memory is still 201.9 MB. Free memory was 153.9 MB in the beginning and 129.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-10-22 02:15:03,881 INFO L168 Benchmark]: TraceAbstraction took 4116.77 ms. Allocated memory was 201.9 MB in the beginning and 284.7 MB in the end (delta: 82.8 MB). Free memory was 129.1 MB in the beginning and 198.0 MB in the end (delta: -68.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-10-22 02:15:03,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 670.57 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 99.1 MB in the beginning and 157.9 MB in the end (delta: -58.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.24 ms. Allocated memory is still 201.9 MB. Free memory was 157.2 MB in the beginning and 155.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.28 ms. Allocated memory is still 201.9 MB. Free memory was 155.2 MB in the beginning and 153.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 451.83 ms. Allocated memory is still 201.9 MB. Free memory was 153.9 MB in the beginning and 129.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4116.77 ms. Allocated memory was 201.9 MB in the beginning and 284.7 MB in the end (delta: 82.8 MB). Free memory was 129.1 MB in the beginning and 198.0 MB in the end (delta: -68.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 797 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 59 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 87 PlacesBefore, 31 PlacesAfterwards, 80 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2810 MoverChecksTotal - PositiveResult [Line: 17]: 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, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 119 SDtfs, 105 SDslu, 141 SDs, 0 SdLazy, 99 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2918 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...