/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin000_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 21:33:24,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 21:33:24,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 21:33:24,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 21:33:24,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 21:33:24,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 21:33:24,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 21:33:24,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 21:33:24,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 21:33:24,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 21:33:24,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 21:33:24,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 21:33:24,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 21:33:24,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 21:33:24,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 21:33:24,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 21:33:24,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 21:33:24,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 21:33:24,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 21:33:24,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 21:33:24,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 21:33:24,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 21:33:24,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 21:33:24,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 21:33:24,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 21:33:24,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 21:33:24,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 21:33:24,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 21:33:24,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 21:33:24,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 21:33:24,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 21:33:24,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 21:33:24,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 21:33:24,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 21:33:24,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 21:33:24,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 21:33:24,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 21:33:24,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 21:33:24,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 21:33:24,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 21:33:24,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 21:33:24,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-06-10 21:33:24,396 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 21:33:24,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 21:33:24,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 21:33:24,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 21:33:24,398 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 21:33:24,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 21:33:24,399 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 21:33:24,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 21:33:24,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 21:33:24,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 21:33:24,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 21:33:24,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 21:33:24,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 21:33:24,400 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 21:33:24,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 21:33:24,400 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 21:33:24,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 21:33:24,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 21:33:24,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 21:33:24,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 21:33:24,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 21:33:24,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:33:24,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 21:33:24,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 21:33:24,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 21:33:24,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 21:33:24,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 21:33:24,402 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 21:33:24,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 21:33:24,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 21:33:24,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 21:33:24,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 21:33:24,686 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 21:33:24,686 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 21:33:24,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin000_pso.opt.i [2021-06-10 21:33:24,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff35219d7/73b1a6fcce094eb0a52360da355ca886/FLAG37adb7730 [2021-06-10 21:33:25,203 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 21:33:25,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin000_pso.opt.i [2021-06-10 21:33:25,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff35219d7/73b1a6fcce094eb0a52360da355ca886/FLAG37adb7730 [2021-06-10 21:33:25,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff35219d7/73b1a6fcce094eb0a52360da355ca886 [2021-06-10 21:33:25,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 21:33:25,236 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 21:33:25,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 21:33:25,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 21:33:25,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 21:33:25,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:33:25" (1/1) ... [2021-06-10 21:33:25,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da7ed8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:33:25, skipping insertion in model container [2021-06-10 21:33:25,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:33:25" (1/1) ... [2021-06-10 21:33:25,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 21:33:25,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 21:33:25,467 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin000_pso.opt.i[949,962] [2021-06-10 21:33:25,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:33:25,552 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 21:33:25,559 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin000_pso.opt.i[949,962] [2021-06-10 21:33:25,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:33:25,617 INFO L208 MainTranslator]: Completed translation [2021-06-10 21:33:25,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:33:25 WrapperNode [2021-06-10 21:33:25,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 21:33:25,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 21:33:25,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 21:33:25,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 21:33:25,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:33:25" (1/1) ... [2021-06-10 21:33:25,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:33:25" (1/1) ... [2021-06-10 21:33:25,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 21:33:25,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 21:33:25,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 21:33:25,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 21:33:25,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:33:25" (1/1) ... [2021-06-10 21:33:25,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:33:25" (1/1) ... [2021-06-10 21:33:25,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:33:25" (1/1) ... [2021-06-10 21:33:25,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:33:25" (1/1) ... [2021-06-10 21:33:25,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:33:25" (1/1) ... [2021-06-10 21:33:25,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:33:25" (1/1) ... [2021-06-10 21:33:25,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:33:25" (1/1) ... [2021-06-10 21:33:25,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 21:33:25,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 21:33:25,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 21:33:25,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 21:33:25,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:33:25" (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 [2021-06-10 21:33:25,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 21:33:25,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 21:33:25,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 21:33:25,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 21:33:25,713 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 21:33:25,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 21:33:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 21:33:25,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 21:33:25,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 21:33:25,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 21:33:25,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 21:33:25,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 21:33:25,716 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 21:33:25,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 21:33:25,993 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 21:33:25,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:33:25 BoogieIcfgContainer [2021-06-10 21:33:25,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 21:33:25,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 21:33:25,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 21:33:25,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 21:33:25,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 09:33:25" (1/3) ... [2021-06-10 21:33:25,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74266bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:33:25, skipping insertion in model container [2021-06-10 21:33:25,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:33:25" (2/3) ... [2021-06-10 21:33:25,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74266bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:33:25, skipping insertion in model container [2021-06-10 21:33:26,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:33:25" (3/3) ... [2021-06-10 21:33:26,000 INFO L111 eAbstractionObserver]: Analyzing ICFG thin000_pso.opt.i [2021-06-10 21:33:26,006 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 21:33:26,010 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 21:33:26,010 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 21:33:26,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,033 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,034 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,034 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,034 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,034 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,034 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,034 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,035 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,035 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,035 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,036 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,036 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,036 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,036 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,036 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,037 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,037 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,037 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,037 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,037 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,038 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,038 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,039 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,039 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,039 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,040 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,044 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,044 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,045 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,045 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:33:26,046 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 21:33:26,060 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-10 21:33:26,083 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 21:33:26,083 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 21:33:26,083 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 21:33:26,084 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 21:33:26,084 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 21:33:26,084 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 21:33:26,084 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 21:33:26,084 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 21:33:26,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-06-10 21:33:26,128 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-06-10 21:33:26,129 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:33:26,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-06-10 21:33:26,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 61 transitions, 132 flow [2021-06-10 21:33:26,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 49 transitions, 104 flow [2021-06-10 21:33:26,140 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 21:33:26,148 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 49 transitions, 104 flow [2021-06-10 21:33:26,151 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 49 transitions, 104 flow [2021-06-10 21:33:26,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 104 flow [2021-06-10 21:33:26,170 INFO L129 PetriNetUnfolder]: 1/49 cut-off events. [2021-06-10 21:33:26,170 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:33:26,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 49 events. 1/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-06-10 21:33:26,173 INFO L151 LiptonReduction]: Number of co-enabled transitions 456 [2021-06-10 21:33:26,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:33:26,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:33:26,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:33:26,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:26,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:26,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:26,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:26,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:26,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:26,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:26,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:26,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:26,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:26,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:33:26,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:33:26,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:33:26,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:26,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:26,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:26,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:33:26,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:33:26,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:33:26,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:26,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:26,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:26,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:26,994 INFO L147 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size 1 [2021-06-10 21:33:27,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:27,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:27,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:27,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:33:27,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:27,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:33:27,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:27,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 21:33:27,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-10 21:33:27,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:27,197 INFO L147 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size 4 [2021-06-10 21:33:27,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:27,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:33:27,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:27,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:33:27,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:33:27,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:27,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:33:27,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:27,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:33:27,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:33:27,601 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-06-10 21:33:27,774 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-06-10 21:33:27,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:27,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:33:27,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:27,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:33:27,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:33:27,849 INFO L163 LiptonReduction]: Checked pairs total: 858 [2021-06-10 21:33:27,849 INFO L165 LiptonReduction]: Total number of compositions: 40 [2021-06-10 21:33:27,851 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1712 [2021-06-10 21:33:27,858 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-06-10 21:33:27,858 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:33:27,858 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:33:27,858 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-06-10 21:33:27,858 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:33:27,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:33:27,861 INFO L82 PathProgramCache]: Analyzing trace with hash 203969178, now seen corresponding path program 1 times [2021-06-10 21:33:27,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:33:27,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086442950] [2021-06-10 21:33:27,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:33:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:33:27,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:27,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:33:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:33:27,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086442950] [2021-06-10 21:33:27,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:33:27,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:33:27,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644440458] [2021-06-10 21:33:27,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-10 21:33:27,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:33:27,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-10 21:33:27,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-10 21:33:27,972 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 101 [2021-06-10 21:33:27,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:27,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:33:27,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 101 [2021-06-10 21:33:27,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:33:27,978 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-10 21:33:27,979 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:33:27,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-10 21:33:27,979 INFO L132 encePairwiseOnDemand]: 100/101 looper letters, 0 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2021-06-10 21:33:27,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 30 flow [2021-06-10 21:33:27,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-10 21:33:27,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-10 21:33:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 189 transitions. [2021-06-10 21:33:27,986 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9356435643564357 [2021-06-10 21:33:27,987 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 189 transitions. [2021-06-10 21:33:27,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 189 transitions. [2021-06-10 21:33:27,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:33:27,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 189 transitions. [2021-06-10 21:33:27,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:27,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:27,993 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:27,995 INFO L185 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 2 states and 189 transitions. [2021-06-10 21:33:27,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 30 flow [2021-06-10 21:33:27,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 28 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:33:27,997 INFO L241 Difference]: Finished difference. Result has 18 places, 12 transitions, 28 flow [2021-06-10 21:33:27,998 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2021-06-10 21:33:27,999 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2021-06-10 21:33:27,999 INFO L480 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 28 flow [2021-06-10 21:33:27,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:27,999 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:33:27,999 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-10 21:33:27,999 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 21:33:27,999 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:33:28,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:33:28,000 INFO L82 PathProgramCache]: Analyzing trace with hash 2028076998, now seen corresponding path program 1 times [2021-06-10 21:33:28,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:33:28,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144683470] [2021-06-10 21:33:28,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:33:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:33:28,098 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-10 21:33:28,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 21:33:28,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:33:28,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144683470] [2021-06-10 21:33:28,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:33:28,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:33:28,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142803733] [2021-06-10 21:33:28,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:33:28,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:33:28,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:33:28,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:33:28,111 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 101 [2021-06-10 21:33:28,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:28,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:33:28,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 101 [2021-06-10 21:33:28,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:33:28,124 INFO L129 PetriNetUnfolder]: 3/22 cut-off events. [2021-06-10 21:33:28,125 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:33:28,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 1 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2021-06-10 21:33:28,126 INFO L132 encePairwiseOnDemand]: 97/101 looper letters, 3 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2021-06-10 21:33:28,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 14 transitions, 44 flow [2021-06-10 21:33:28,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:33:28,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:33:28,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2021-06-10 21:33:28,131 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7854785478547854 [2021-06-10 21:33:28,131 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2021-06-10 21:33:28,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2021-06-10 21:33:28,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:33:28,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2021-06-10 21:33:28,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:28,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:28,135 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:28,136 INFO L185 Difference]: Start difference. First operand has 18 places, 12 transitions, 28 flow. Second operand 3 states and 238 transitions. [2021-06-10 21:33:28,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 14 transitions, 44 flow [2021-06-10 21:33:28,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 44 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:33:28,139 INFO L241 Difference]: Finished difference. Result has 21 places, 14 transitions, 47 flow [2021-06-10 21:33:28,140 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=21, PETRI_TRANSITIONS=14} [2021-06-10 21:33:28,141 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2021-06-10 21:33:28,141 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 14 transitions, 47 flow [2021-06-10 21:33:28,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:28,141 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:33:28,141 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:33:28,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 21:33:28,141 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:33:28,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:33:28,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1562549611, now seen corresponding path program 1 times [2021-06-10 21:33:28,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:33:28,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556374623] [2021-06-10 21:33:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:33:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:33:28,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:28,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:33:28,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:28,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:33:28,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:33:28,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556374623] [2021-06-10 21:33:28,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:33:28,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:33:28,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192411038] [2021-06-10 21:33:28,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:33:28,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:33:28,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:33:28,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:33:28,213 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 101 [2021-06-10 21:33:28,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:28,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:33:28,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 101 [2021-06-10 21:33:28,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:33:28,233 INFO L129 PetriNetUnfolder]: 1/19 cut-off events. [2021-06-10 21:33:28,234 INFO L130 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2021-06-10 21:33:28,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 19 events. 1/19 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 5/24 useless extension candidates. Maximal degree in co-relation 39. Up to 7 conditions per place. [2021-06-10 21:33:28,234 INFO L132 encePairwiseOnDemand]: 97/101 looper letters, 1 selfloop transitions, 3 changer transitions 3/15 dead transitions. [2021-06-10 21:33:28,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 15 transitions, 63 flow [2021-06-10 21:33:28,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:33:28,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:33:28,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2021-06-10 21:33:28,235 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7797029702970297 [2021-06-10 21:33:28,235 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2021-06-10 21:33:28,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2021-06-10 21:33:28,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:33:28,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2021-06-10 21:33:28,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:28,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:28,239 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:28,239 INFO L185 Difference]: Start difference. First operand has 21 places, 14 transitions, 47 flow. Second operand 4 states and 315 transitions. [2021-06-10 21:33:28,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 15 transitions, 63 flow [2021-06-10 21:33:28,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 15 transitions, 60 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:33:28,240 INFO L241 Difference]: Finished difference. Result has 25 places, 12 transitions, 50 flow [2021-06-10 21:33:28,240 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=50, PETRI_PLACES=25, PETRI_TRANSITIONS=12} [2021-06-10 21:33:28,240 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 6 predicate places. [2021-06-10 21:33:28,240 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 12 transitions, 50 flow [2021-06-10 21:33:28,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:28,240 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:33:28,240 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:33:28,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 21:33:28,241 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:33:28,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:33:28,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1128445157, now seen corresponding path program 1 times [2021-06-10 21:33:28,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:33:28,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458370385] [2021-06-10 21:33:28,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:33:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:33:28,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:28,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:33:28,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:33:28,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:33:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:33:28,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458370385] [2021-06-10 21:33:28,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:33:28,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:33:28,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907432581] [2021-06-10 21:33:28,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:33:28,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:33:28,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:33:28,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:33:28,277 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 101 [2021-06-10 21:33:28,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 12 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:28,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:33:28,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 101 [2021-06-10 21:33:28,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:33:28,286 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-06-10 21:33:28,286 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-06-10 21:33:28,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 11 events. 0/11 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/13 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-10 21:33:28,286 INFO L132 encePairwiseOnDemand]: 98/101 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2021-06-10 21:33:28,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 11 transitions, 48 flow [2021-06-10 21:33:28,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:33:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:33:28,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2021-06-10 21:33:28,288 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7747524752475248 [2021-06-10 21:33:28,288 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2021-06-10 21:33:28,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2021-06-10 21:33:28,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:33:28,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2021-06-10 21:33:28,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:28,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:28,290 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:28,290 INFO L185 Difference]: Start difference. First operand has 25 places, 12 transitions, 50 flow. Second operand 4 states and 313 transitions. [2021-06-10 21:33:28,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 11 transitions, 48 flow [2021-06-10 21:33:28,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 11 transitions, 32 flow, removed 1 selfloop flow, removed 7 redundant places. [2021-06-10 21:33:28,290 INFO L241 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2021-06-10 21:33:28,290 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2021-06-10 21:33:28,290 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2021-06-10 21:33:28,291 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2021-06-10 21:33:28,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:33:28,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 21:33:28,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 09:33:28 BasicIcfg [2021-06-10 21:33:28,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 21:33:28,294 INFO L168 Benchmark]: Toolchain (without parser) took 3057.79 ms. Allocated memory was 350.2 MB in the beginning and 423.6 MB in the end (delta: 73.4 MB). Free memory was 312.7 MB in the beginning and 361.6 MB in the end (delta: -48.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.0 GB. [2021-06-10 21:33:28,294 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 350.2 MB. Free memory was 330.7 MB in the beginning and 330.6 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:33:28,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.48 ms. Allocated memory is still 350.2 MB. Free memory was 312.5 MB in the beginning and 311.7 MB in the end (delta: 827.7 kB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. [2021-06-10 21:33:28,295 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.80 ms. Allocated memory is still 350.2 MB. Free memory was 311.7 MB in the beginning and 309.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:33:28,295 INFO L168 Benchmark]: Boogie Preprocessor took 12.88 ms. Allocated memory is still 350.2 MB. Free memory was 309.6 MB in the beginning and 308.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:33:28,295 INFO L168 Benchmark]: RCFGBuilder took 338.99 ms. Allocated memory is still 350.2 MB. Free memory was 308.6 MB in the beginning and 285.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:33:28,296 INFO L168 Benchmark]: TraceAbstraction took 2297.54 ms. Allocated memory was 350.2 MB in the beginning and 423.6 MB in the end (delta: 73.4 MB). Free memory was 285.5 MB in the beginning and 361.6 MB in the end (delta: -76.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:33:28,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 350.2 MB. Free memory was 330.7 MB in the beginning and 330.6 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 378.48 ms. Allocated memory is still 350.2 MB. Free memory was 312.5 MB in the beginning and 311.7 MB in the end (delta: 827.7 kB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.80 ms. Allocated memory is still 350.2 MB. Free memory was 311.7 MB in the beginning and 309.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.88 ms. Allocated memory is still 350.2 MB. Free memory was 309.6 MB in the beginning and 308.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 338.99 ms. Allocated memory is still 350.2 MB. Free memory was 308.6 MB in the beginning and 285.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2297.54 ms. Allocated memory was 350.2 MB in the beginning and 423.6 MB in the end (delta: 73.4 MB). Free memory was 285.5 MB in the beginning and 361.6 MB in the end (delta: -76.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1698.7ms, 55 PlacesBefore, 19 PlacesAfterwards, 49 TransitionsBefore, 13 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 40 TotalNumberOfCompositions, 858 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 594, positive: 535, positive conditional: 0, positive unconditional: 535, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 347, positive: 324, positive conditional: 0, positive unconditional: 324, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 347, positive: 324, positive conditional: 0, positive unconditional: 324, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 347, positive: 322, positive conditional: 0, positive unconditional: 322, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 66, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 594, positive: 211, positive conditional: 0, positive unconditional: 211, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 347, unknown conditional: 0, unknown unconditional: 347] , Statistics on independence cache: Total cache size (in pairs): 588, Positive cache size: 565, Positive conditional cache size: 0, Positive unconditional cache size: 565, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2211.8ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 103.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1771.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 SDtfs, 2 SDslu, 1 SDs, 0 SdLazy, 11 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=3, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.2ms SsaConstructionTime, 42.6ms SatisfiabilityAnalysisTime, 171.5ms InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 91 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...