/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 22:02:55,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 22:02:55,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 22:02:55,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 22:02:55,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 22:02:55,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 22:02:55,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 22:02:55,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 22:02:55,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 22:02:55,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 22:02:55,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 22:02:55,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 22:02:55,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 22:02:55,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 22:02:55,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 22:02:55,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 22:02:55,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 22:02:55,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 22:02:55,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 22:02:55,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 22:02:55,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 22:02:55,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 22:02:55,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 22:02:55,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 22:02:55,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 22:02:55,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 22:02:55,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 22:02:55,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 22:02:55,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 22:02:55,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 22:02:55,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 22:02:55,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 22:02:55,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 22:02:55,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 22:02:55,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 22:02:55,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 22:02:55,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 22:02:55,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 22:02:55,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 22:02:55,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 22:02:55,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 22:02:55,338 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-21 22:02:55,361 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 22:02:55,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 22:02:55,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 22:02:55,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 22:02:55,363 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 22:02:55,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 22:02:55,364 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 22:02:55,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 22:02:55,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 22:02:55,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 22:02:55,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 22:02:55,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 22:02:55,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 22:02:55,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 22:02:55,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 22:02:55,365 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 22:02:55,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 22:02:55,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 22:02:55,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 22:02:55,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 22:02:55,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 22:02:55,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 22:02:55,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 22:02:55,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 22:02:55,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 22:02:55,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 22:02:55,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 22:02:55,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 22:02:55,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 22:02:55,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 22:02:55,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 22:02:55,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 22:02:55,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 22:02:55,713 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 22:02:55,713 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 22:02:55,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-10-21 22:02:55,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e7981711/a76c8c6ed0a145fa9c59f1b35e1451e1/FLAG24a5e4b40 [2020-10-21 22:02:56,322 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 22:02:56,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-10-21 22:02:56,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e7981711/a76c8c6ed0a145fa9c59f1b35e1451e1/FLAG24a5e4b40 [2020-10-21 22:02:56,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e7981711/a76c8c6ed0a145fa9c59f1b35e1451e1 [2020-10-21 22:02:56,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 22:02:56,660 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 22:02:56,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 22:02:56,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 22:02:56,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 22:02:56,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:02:56" (1/1) ... [2020-10-21 22:02:56,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fba72e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:56, skipping insertion in model container [2020-10-21 22:02:56,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:02:56" (1/1) ... [2020-10-21 22:02:56,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 22:02:56,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 22:02:57,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:02:57,171 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 22:02:57,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:02:57,326 INFO L208 MainTranslator]: Completed translation [2020-10-21 22:02:57,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:57 WrapperNode [2020-10-21 22:02:57,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 22:02:57,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 22:02:57,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 22:02:57,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 22:02:57,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:57" (1/1) ... [2020-10-21 22:02:57,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:57" (1/1) ... [2020-10-21 22:02:57,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 22:02:57,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 22:02:57,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 22:02:57,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 22:02:57,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:57" (1/1) ... [2020-10-21 22:02:57,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:57" (1/1) ... [2020-10-21 22:02:57,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:57" (1/1) ... [2020-10-21 22:02:57,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:57" (1/1) ... [2020-10-21 22:02:57,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:57" (1/1) ... [2020-10-21 22:02:57,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:57" (1/1) ... [2020-10-21 22:02:57,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:57" (1/1) ... [2020-10-21 22:02:57,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 22:02:57,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 22:02:57,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 22:02:57,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 22:02:57,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:57" (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 [2020-10-21 22:02:57,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 22:02:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 22:02:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 22:02:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 22:02:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-21 22:02:57,474 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-21 22:02:57,474 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-21 22:02:57,475 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-21 22:02:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-21 22:02:57,475 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-21 22:02:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 22:02:57,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 22:02:57,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 22:02:57,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 22:02:57,477 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 22:02:57,897 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 22:02:57,898 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-21 22:02:57,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:02:57 BoogieIcfgContainer [2020-10-21 22:02:57,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 22:02:57,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 22:02:57,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 22:02:57,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 22:02:57,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 10:02:56" (1/3) ... [2020-10-21 22:02:57,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59888674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:02:57, skipping insertion in model container [2020-10-21 22:02:57,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:02:57" (2/3) ... [2020-10-21 22:02:57,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59888674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:02:57, skipping insertion in model container [2020-10-21 22:02:57,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:02:57" (3/3) ... [2020-10-21 22:02:57,910 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2020-10-21 22:02:57,923 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 22:02:57,923 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 22:02:57,932 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 22:02:57,934 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 22:02:57,970 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,971 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,971 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,971 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,972 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,972 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,973 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,973 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,973 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,973 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,974 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,974 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,975 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,975 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,975 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,976 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,976 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,976 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,980 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,981 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,981 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,981 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,987 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,988 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,988 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,988 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,991 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,991 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,991 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,991 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:02:57,994 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 22:02:58,008 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 22:02:58,030 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:02:58,030 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:02:58,031 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:02:58,031 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:02:58,031 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:02:58,031 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:02:58,031 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:02:58,032 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:02:58,046 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:02:58,049 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-21 22:02:58,052 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-21 22:02:58,054 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-21 22:02:58,104 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-21 22:02:58,104 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 22:02:58,110 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-21 22:02:58,113 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-21 22:03:00,203 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-10-21 22:03:00,328 INFO L131 LiptonReduction]: Checked pairs total: 3181 [2020-10-21 22:03:00,329 INFO L133 LiptonReduction]: Total number of compositions: 74 [2020-10-21 22:03:00,337 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-21 22:03:00,385 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-21 22:03:00,388 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-21 22:03:00,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 22:03:00,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:03:00,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:03:00,397 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:03:00,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:03:00,403 INFO L82 PathProgramCache]: Analyzing trace with hash 2101373786, now seen corresponding path program 1 times [2020-10-21 22:03:00,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:03:00,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162910586] [2020-10-21 22:03:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:03:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:03:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:03:00,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162910586] [2020-10-21 22:03:00,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:03:00,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:03:00,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235721441] [2020-10-21 22:03:00,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:03:00,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:03:00,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:03:00,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:03:00,654 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-21 22:03:00,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:03:00,706 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-10-21 22:03:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:03:00,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-21 22:03:00,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:03:00,736 INFO L225 Difference]: With dead ends: 290 [2020-10-21 22:03:00,736 INFO L226 Difference]: Without dead ends: 226 [2020-10-21 22:03:00,738 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 [2020-10-21 22:03:00,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-21 22:03:00,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-21 22:03:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-21 22:03:00,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-10-21 22:03:00,832 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-10-21 22:03:00,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:03:00,833 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-10-21 22:03:00,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:03:00,834 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-10-21 22:03:00,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:03:00,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:03:00,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:03:00,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 22:03:00,836 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:03:00,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:03:00,836 INFO L82 PathProgramCache]: Analyzing trace with hash 718863785, now seen corresponding path program 1 times [2020-10-21 22:03:00,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:03:00,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66865107] [2020-10-21 22:03:00,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:03:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:03:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:03:00,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66865107] [2020-10-21 22:03:00,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:03:00,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:03:00,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326569925] [2020-10-21 22:03:00,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:03:00,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:03:00,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:03:00,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:03:00,919 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-10-21 22:03:00,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:03:00,931 INFO L93 Difference]: Finished difference Result 212 states and 578 transitions. [2020-10-21 22:03:00,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:03:00,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-21 22:03:00,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:03:00,934 INFO L225 Difference]: With dead ends: 212 [2020-10-21 22:03:00,934 INFO L226 Difference]: Without dead ends: 212 [2020-10-21 22:03:00,935 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 [2020-10-21 22:03:00,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-21 22:03:00,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-10-21 22:03:00,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-21 22:03:00,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 578 transitions. [2020-10-21 22:03:00,952 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 578 transitions. Word has length 9 [2020-10-21 22:03:00,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:03:00,952 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 578 transitions. [2020-10-21 22:03:00,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:03:00,953 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 578 transitions. [2020-10-21 22:03:00,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-21 22:03:00,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:03:00,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:03:00,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 22:03:00,955 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:03:00,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:03:00,955 INFO L82 PathProgramCache]: Analyzing trace with hash 809939624, now seen corresponding path program 1 times [2020-10-21 22:03:00,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:03:00,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739351449] [2020-10-21 22:03:00,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:03:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:03:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:03:01,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739351449] [2020-10-21 22:03:01,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:03:01,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:03:01,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816332829] [2020-10-21 22:03:01,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:03:01,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:03:01,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:03:01,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:03:01,058 INFO L87 Difference]: Start difference. First operand 212 states and 578 transitions. Second operand 4 states. [2020-10-21 22:03:01,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:03:01,089 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-21 22:03:01,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 22:03:01,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-21 22:03:01,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:03:01,092 INFO L225 Difference]: With dead ends: 242 [2020-10-21 22:03:01,092 INFO L226 Difference]: Without dead ends: 146 [2020-10-21 22:03:01,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:03:01,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-21 22:03:01,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-21 22:03:01,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-21 22:03:01,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-21 22:03:01,103 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-10-21 22:03:01,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:03:01,104 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-21 22:03:01,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:03:01,104 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-21 22:03:01,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 22:03:01,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:03:01,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:03:01,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 22:03:01,106 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:03:01,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:03:01,106 INFO L82 PathProgramCache]: Analyzing trace with hash -676988276, now seen corresponding path program 1 times [2020-10-21 22:03:01,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:03:01,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640465970] [2020-10-21 22:03:01,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:03:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:03:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:03:01,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640465970] [2020-10-21 22:03:01,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:03:01,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:03:01,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011077565] [2020-10-21 22:03:01,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:03:01,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:03:01,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:03:01,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:03:01,215 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 4 states. [2020-10-21 22:03:01,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:03:01,249 INFO L93 Difference]: Finished difference Result 165 states and 377 transitions. [2020-10-21 22:03:01,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 22:03:01,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-21 22:03:01,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:03:01,250 INFO L225 Difference]: With dead ends: 165 [2020-10-21 22:03:01,251 INFO L226 Difference]: Without dead ends: 125 [2020-10-21 22:03:01,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:03:01,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-21 22:03:01,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-21 22:03:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-21 22:03:01,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 284 transitions. [2020-10-21 22:03:01,259 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 284 transitions. Word has length 11 [2020-10-21 22:03:01,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:03:01,260 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 284 transitions. [2020-10-21 22:03:01,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:03:01,260 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 284 transitions. [2020-10-21 22:03:01,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 22:03:01,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:03:01,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:03:01,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 22:03:01,263 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:03:01,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:03:01,263 INFO L82 PathProgramCache]: Analyzing trace with hash 524604256, now seen corresponding path program 1 times [2020-10-21 22:03:01,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:03:01,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356504361] [2020-10-21 22:03:01,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:03:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:03:01,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:03:01,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356504361] [2020-10-21 22:03:01,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:03:01,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:03:01,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602537712] [2020-10-21 22:03:01,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:03:01,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:03:01,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:03:01,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:03:01,417 INFO L87 Difference]: Start difference. First operand 125 states and 284 transitions. Second operand 5 states. [2020-10-21 22:03:01,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:03:01,469 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-10-21 22:03:01,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:03:01,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-21 22:03:01,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:03:01,472 INFO L225 Difference]: With dead ends: 122 [2020-10-21 22:03:01,472 INFO L226 Difference]: Without dead ends: 97 [2020-10-21 22:03:01,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 22:03:01,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-21 22:03:01,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-21 22:03:01,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-21 22:03:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-10-21 22:03:01,488 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-10-21 22:03:01,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:03:01,488 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-10-21 22:03:01,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:03:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-10-21 22:03:01,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 22:03:01,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:03:01,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:03:01,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 22:03:01,493 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:03:01,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:03:01,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1603145941, now seen corresponding path program 1 times [2020-10-21 22:03:01,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:03:01,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080752872] [2020-10-21 22:03:01,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:03:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:03:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:03:01,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080752872] [2020-10-21 22:03:01,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:03:01,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 22:03:01,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852111226] [2020-10-21 22:03:01,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 22:03:01,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:03:01,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 22:03:01,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 22:03:01,593 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 6 states. [2020-10-21 22:03:01,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:03:01,650 INFO L93 Difference]: Finished difference Result 92 states and 190 transitions. [2020-10-21 22:03:01,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 22:03:01,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-21 22:03:01,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:03:01,652 INFO L225 Difference]: With dead ends: 92 [2020-10-21 22:03:01,652 INFO L226 Difference]: Without dead ends: 84 [2020-10-21 22:03:01,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:03:01,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-21 22:03:01,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-21 22:03:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-21 22:03:01,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 176 transitions. [2020-10-21 22:03:01,657 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 176 transitions. Word has length 14 [2020-10-21 22:03:01,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:03:01,657 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 176 transitions. [2020-10-21 22:03:01,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 22:03:01,658 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 176 transitions. [2020-10-21 22:03:01,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 22:03:01,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:03:01,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:03:01,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 22:03:01,688 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:03:01,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:03:01,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1724594669, now seen corresponding path program 1 times [2020-10-21 22:03:01,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:03:01,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096704840] [2020-10-21 22:03:01,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:03:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:03:01,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:03:01,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096704840] [2020-10-21 22:03:01,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:03:01,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 22:03:01,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20331237] [2020-10-21 22:03:01,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:03:01,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:03:01,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:03:01,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:03:01,731 INFO L87 Difference]: Start difference. First operand 84 states and 176 transitions. Second operand 4 states. [2020-10-21 22:03:01,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:03:01,745 INFO L93 Difference]: Finished difference Result 97 states and 197 transitions. [2020-10-21 22:03:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 22:03:01,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-21 22:03:01,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:03:01,746 INFO L225 Difference]: With dead ends: 97 [2020-10-21 22:03:01,747 INFO L226 Difference]: Without dead ends: 36 [2020-10-21 22:03:01,747 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 [2020-10-21 22:03:01,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-21 22:03:01,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-21 22:03:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-21 22:03:01,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-21 22:03:01,749 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 17 [2020-10-21 22:03:01,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:03:01,750 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-21 22:03:01,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:03:01,750 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-21 22:03:01,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 22:03:01,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:03:01,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:03:01,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 22:03:01,751 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:03:01,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:03:01,752 INFO L82 PathProgramCache]: Analyzing trace with hash -737350579, now seen corresponding path program 2 times [2020-10-21 22:03:01,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:03:01,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185887541] [2020-10-21 22:03:01,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:03:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:03:01,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:03:01,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185887541] [2020-10-21 22:03:01,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:03:01,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:03:01,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937022361] [2020-10-21 22:03:01,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:03:01,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:03:01,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:03:01,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:03:01,783 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-10-21 22:03:01,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:03:01,788 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-21 22:03:01,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:03:01,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-21 22:03:01,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:03:01,789 INFO L225 Difference]: With dead ends: 35 [2020-10-21 22:03:01,789 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 22:03:01,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:03:01,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 22:03:01,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 22:03:01,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 22:03:01,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 22:03:01,790 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-21 22:03:01,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:03:01,791 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 22:03:01,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:03:01,791 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 22:03:01,791 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 22:03:01,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-21 22:03:01,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 10:03:01 BasicIcfg [2020-10-21 22:03:01,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 22:03:01,798 INFO L168 Benchmark]: Toolchain (without parser) took 5143.33 ms. Allocated memory was 147.3 MB in the beginning and 284.7 MB in the end (delta: 137.4 MB). Free memory was 101.7 MB in the beginning and 231.6 MB in the end (delta: -130.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 7.1 GB. [2020-10-21 22:03:01,799 INFO L168 Benchmark]: CDTParser took 4.28 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-21 22:03:01,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.53 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 100.6 MB in the beginning and 157.3 MB in the end (delta: -56.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-10-21 22:03:01,801 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.73 ms. Allocated memory is still 203.4 MB. Free memory was 157.3 MB in the beginning and 154.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-21 22:03:01,801 INFO L168 Benchmark]: Boogie Preprocessor took 26.98 ms. Allocated memory is still 203.4 MB. Free memory was 154.7 MB in the beginning and 153.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-21 22:03:01,802 INFO L168 Benchmark]: RCFGBuilder took 495.08 ms. Allocated memory is still 203.4 MB. Free memory was 153.3 MB in the beginning and 129.1 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-10-21 22:03:01,803 INFO L168 Benchmark]: TraceAbstraction took 3893.57 ms. Allocated memory was 203.4 MB in the beginning and 284.7 MB in the end (delta: 81.3 MB). Free memory was 128.5 MB in the beginning and 231.6 MB in the end (delta: -103.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-21 22:03:01,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 4.28 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 665.53 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 100.6 MB in the beginning and 157.3 MB in the end (delta: -56.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.73 ms. Allocated memory is still 203.4 MB. Free memory was 157.3 MB in the beginning and 154.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.98 ms. Allocated memory is still 203.4 MB. Free memory was 154.7 MB in the beginning and 153.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 495.08 ms. Allocated memory is still 203.4 MB. Free memory was 153.3 MB in the beginning and 129.1 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3893.57 ms. Allocated memory was 203.4 MB in the beginning and 284.7 MB in the end (delta: 81.3 MB). Free memory was 128.5 MB in the beginning and 231.6 MB in the end (delta: -103.1 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 1029 VarBasedMoverChecksPositive, 54 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 43 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 93 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 74 TotalNumberOfCompositions, 3181 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 152 SDtfs, 131 SDslu, 192 SDs, 0 SdLazy, 98 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2996 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...