/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/safe016_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:24:32,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:24:32,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:24:32,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:24:32,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:24:32,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:24:32,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:24:32,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:24:32,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:24:32,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:24:32,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:24:32,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:24:32,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:24:32,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:24:32,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:24:32,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:24:32,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:24:32,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:24:32,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:24:32,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:24:32,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:24:32,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:24:32,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:24:32,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:24:32,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:24:32,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:24:32,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:24:32,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:24:32,323 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 [2021-03-11 20:24:32,348 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:24:32,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:24:32,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:24:32,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:24:32,351 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:24:32,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:24:32,351 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:24:32,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:24:32,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:24:32,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:24:32,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:24:32,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:24:32,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:24:32,352 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:24:32,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:24:32,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:24:32,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:24:32,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:24:32,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:24:32,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:24:32,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:24:32,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:24:32,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:24:32,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:24:32,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:24:32,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:24:32,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:24:32,354 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:24:32,354 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:24:32,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:24:32,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:24:32,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:24:32,601 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:24:32,601 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:24:32,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2021-03-11 20:24:32,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2bc6b25/a130e38e09aa473ba69c303b72d8cbfc/FLAGd4c76edca [2021-03-11 20:24:33,080 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:24:33,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2021-03-11 20:24:33,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2bc6b25/a130e38e09aa473ba69c303b72d8cbfc/FLAGd4c76edca [2021-03-11 20:24:33,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2bc6b25/a130e38e09aa473ba69c303b72d8cbfc [2021-03-11 20:24:33,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:24:33,109 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:24:33,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:24:33,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:24:33,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:24:33,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:24:33" (1/1) ... [2021-03-11 20:24:33,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd0c7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:33, skipping insertion in model container [2021-03-11 20:24:33,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:24:33" (1/1) ... [2021-03-11 20:24:33,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:24:33,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:24:33,269 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/safe016_tso.opt.i[949,962] [2021-03-11 20:24:33,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:24:33,414 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:24:33,422 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/safe016_tso.opt.i[949,962] [2021-03-11 20:24:33,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:24:33,493 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:24:33,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:33 WrapperNode [2021-03-11 20:24:33,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:24:33,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:24:33,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:24:33,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:24:33,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:33" (1/1) ... [2021-03-11 20:24:33,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:33" (1/1) ... [2021-03-11 20:24:33,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:24:33,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:24:33,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:24:33,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:24:33,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:33" (1/1) ... [2021-03-11 20:24:33,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:33" (1/1) ... [2021-03-11 20:24:33,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:33" (1/1) ... [2021-03-11 20:24:33,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:33" (1/1) ... [2021-03-11 20:24:33,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:33" (1/1) ... [2021-03-11 20:24:33,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:33" (1/1) ... [2021-03-11 20:24:33,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:33" (1/1) ... [2021-03-11 20:24:33,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:24:33,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:24:33,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:24:33,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:24:33,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:33" (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 [2021-03-11 20:24:33,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:24:33,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:24:33,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:24:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:24:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:24:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:24:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:24:33,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:24:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:24:33,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:24:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-11 20:24:33,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-11 20:24:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:24:33,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:24:33,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:24:33,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:24:33,600 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:24:33,931 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:24:33,931 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:24:33,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:24:33 BoogieIcfgContainer [2021-03-11 20:24:33,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:24:33,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:24:33,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:24:33,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:24:33,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:24:33" (1/3) ... [2021-03-11 20:24:33,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5138ba9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:24:33, skipping insertion in model container [2021-03-11 20:24:33,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:24:33" (2/3) ... [2021-03-11 20:24:33,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5138ba9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:24:33, skipping insertion in model container [2021-03-11 20:24:33,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:24:33" (3/3) ... [2021-03-11 20:24:33,938 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2021-03-11 20:24:33,942 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:24:33,944 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:24:33,945 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:24:33,963 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,963 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,963 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,963 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,963 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,963 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,963 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,964 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,964 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,964 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,964 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,964 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,964 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,964 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,964 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,965 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,965 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,965 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,965 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,965 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,965 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,965 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,965 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,965 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,966 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,966 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,966 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,966 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,967 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,967 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,967 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,968 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,968 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,968 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,968 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,969 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,969 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,969 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,969 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,969 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,969 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,969 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,969 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,971 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,971 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,975 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,975 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,975 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,975 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,978 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,978 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,978 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,978 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,981 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,981 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,981 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,982 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:24:33,982 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:24:33,994 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-11 20:24:34,006 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:24:34,006 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:24:34,006 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:24:34,006 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:24:34,006 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:24:34,006 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:24:34,007 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:24:34,007 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:24:34,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 85 transitions, 190 flow [2021-03-11 20:24:34,061 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-03-11 20:24:34,061 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:24:34,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-03-11 20:24:34,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 85 transitions, 190 flow [2021-03-11 20:24:34,072 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 67 transitions, 146 flow [2021-03-11 20:24:34,074 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:24:34,079 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 67 transitions, 146 flow [2021-03-11 20:24:34,083 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 67 transitions, 146 flow [2021-03-11 20:24:34,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 67 transitions, 146 flow [2021-03-11 20:24:34,097 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-03-11 20:24:34,097 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:24:34,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 1/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2021-03-11 20:24:34,099 INFO L116 LiptonReduction]: Number of co-enabled transitions 1250 [2021-03-11 20:24:35,809 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 20:24:36,001 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 20:24:36,066 INFO L131 LiptonReduction]: Checked pairs total: 2266 [2021-03-11 20:24:36,067 INFO L133 LiptonReduction]: Total number of compositions: 52 [2021-03-11 20:24:36,068 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1996 [2021-03-11 20:24:36,084 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-11 20:24:36,084 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:24:36,085 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:36,085 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:36,086 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:36,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:36,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1293936405, now seen corresponding path program 1 times [2021-03-11 20:24:36,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:36,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072094581] [2021-03-11 20:24:36,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:36,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:24:36,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072094581] [2021-03-11 20:24:36,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:36,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:24:36,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372294117] [2021-03-11 20:24:36,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:24:36,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:36,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:24:36,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:24:36,286 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 137 [2021-03-11 20:24:36,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2021-03-11 20:24:36,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:36,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 137 [2021-03-11 20:24:36,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:36,301 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-11 20:24:36,301 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:24:36,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 3/23 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-11 20:24:36,302 INFO L132 encePairwiseOnDemand]: 133/137 looper letters, 1 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2021-03-11 20:24:36,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 20 transitions, 58 flow [2021-03-11 20:24:36,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:24:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:24:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2021-03-11 20:24:36,310 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8832116788321168 [2021-03-11 20:24:36,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2021-03-11 20:24:36,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2021-03-11 20:24:36,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:36,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2021-03-11 20:24:36,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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) [2021-03-11 20:24:36,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 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) [2021-03-11 20:24:36,318 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 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) [2021-03-11 20:24:36,319 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 363 transitions. [2021-03-11 20:24:36,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 20 transitions, 58 flow [2021-03-11 20:24:36,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 54 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 20:24:36,321 INFO L241 Difference]: Finished difference. Result has 32 places, 20 transitions, 56 flow [2021-03-11 20:24:36,322 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2021-03-11 20:24:36,323 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2021-03-11 20:24:36,323 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 56 flow [2021-03-11 20:24:36,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2021-03-11 20:24:36,323 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:36,323 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:36,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:24:36,323 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:36,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:36,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1457322455, now seen corresponding path program 1 times [2021-03-11 20:24:36,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:36,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018959637] [2021-03-11 20:24:36,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:36,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:36,364 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:24:36,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:24:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:24:36,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018959637] [2021-03-11 20:24:36,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:36,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:24:36,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192119032] [2021-03-11 20:24:36,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:24:36,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:36,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:24:36,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:24:36,374 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 137 [2021-03-11 20:24:36,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 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) [2021-03-11 20:24:36,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:36,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 137 [2021-03-11 20:24:36,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:36,408 INFO L129 PetriNetUnfolder]: 96/242 cut-off events. [2021-03-11 20:24:36,408 INFO L130 PetriNetUnfolder]: For 49/93 co-relation queries the response was YES. [2021-03-11 20:24:36,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 242 events. 96/242 cut-off events. For 49/93 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1213 event pairs, 19 based on Foata normal form. 16/243 useless extension candidates. Maximal degree in co-relation 463. Up to 101 conditions per place. [2021-03-11 20:24:36,410 INFO L132 encePairwiseOnDemand]: 129/137 looper letters, 10 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2021-03-11 20:24:36,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 114 flow [2021-03-11 20:24:36,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:24:36,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:24:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 439 transitions. [2021-03-11 20:24:36,413 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.801094890510949 [2021-03-11 20:24:36,413 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 439 transitions. [2021-03-11 20:24:36,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 439 transitions. [2021-03-11 20:24:36,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:36,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 439 transitions. [2021-03-11 20:24:36,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 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) [2021-03-11 20:24:36,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 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) [2021-03-11 20:24:36,416 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 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) [2021-03-11 20:24:36,416 INFO L185 Difference]: Start difference. First operand has 32 places, 20 transitions, 56 flow. Second operand 4 states and 439 transitions. [2021-03-11 20:24:36,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 114 flow [2021-03-11 20:24:36,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:24:36,417 INFO L241 Difference]: Finished difference. Result has 36 places, 25 transitions, 105 flow [2021-03-11 20:24:36,417 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2021-03-11 20:24:36,417 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2021-03-11 20:24:36,417 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 105 flow [2021-03-11 20:24:36,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 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) [2021-03-11 20:24:36,417 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:36,418 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:36,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:24:36,418 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:36,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:36,418 INFO L82 PathProgramCache]: Analyzing trace with hash -2067644928, now seen corresponding path program 1 times [2021-03-11 20:24:36,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:36,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910562892] [2021-03-11 20:24:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:36,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:36,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:24:36,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910562892] [2021-03-11 20:24:36,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:36,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:24:36,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792820243] [2021-03-11 20:24:36,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:24:36,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:36,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:24:36,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:24:36,452 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2021-03-11 20:24:36,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 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) [2021-03-11 20:24:36,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:36,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2021-03-11 20:24:36,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:36,486 INFO L129 PetriNetUnfolder]: 67/214 cut-off events. [2021-03-11 20:24:36,486 INFO L130 PetriNetUnfolder]: For 188/262 co-relation queries the response was YES. [2021-03-11 20:24:36,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 214 events. 67/214 cut-off events. For 188/262 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1178 event pairs, 27 based on Foata normal form. 18/221 useless extension candidates. Maximal degree in co-relation 552. Up to 81 conditions per place. [2021-03-11 20:24:36,492 INFO L132 encePairwiseOnDemand]: 132/137 looper letters, 8 selfloop transitions, 5 changer transitions 4/34 dead transitions. [2021-03-11 20:24:36,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 184 flow [2021-03-11 20:24:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:24:36,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:24:36,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 460 transitions. [2021-03-11 20:24:36,500 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8394160583941606 [2021-03-11 20:24:36,500 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 460 transitions. [2021-03-11 20:24:36,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 460 transitions. [2021-03-11 20:24:36,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:36,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 460 transitions. [2021-03-11 20:24:36,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2021-03-11 20:24:36,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 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) [2021-03-11 20:24:36,503 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 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) [2021-03-11 20:24:36,503 INFO L185 Difference]: Start difference. First operand has 36 places, 25 transitions, 105 flow. Second operand 4 states and 460 transitions. [2021-03-11 20:24:36,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 184 flow [2021-03-11 20:24:36,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:24:36,505 INFO L241 Difference]: Finished difference. Result has 40 places, 27 transitions, 142 flow [2021-03-11 20:24:36,506 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2021-03-11 20:24:36,506 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2021-03-11 20:24:36,506 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 142 flow [2021-03-11 20:24:36,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 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) [2021-03-11 20:24:36,506 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:36,506 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:36,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:24:36,507 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:36,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:36,507 INFO L82 PathProgramCache]: Analyzing trace with hash 327163549, now seen corresponding path program 1 times [2021-03-11 20:24:36,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:36,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204722329] [2021-03-11 20:24:36,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:36,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:36,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:36,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:24:36,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204722329] [2021-03-11 20:24:36,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:36,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:24:36,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115458096] [2021-03-11 20:24:36,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:24:36,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:36,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:24:36,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:24:36,568 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2021-03-11 20:24:36,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 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) [2021-03-11 20:24:36,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:36,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2021-03-11 20:24:36,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:36,594 INFO L129 PetriNetUnfolder]: 38/151 cut-off events. [2021-03-11 20:24:36,595 INFO L130 PetriNetUnfolder]: For 275/319 co-relation queries the response was YES. [2021-03-11 20:24:36,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 151 events. 38/151 cut-off events. For 275/319 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 788 event pairs, 9 based on Foata normal form. 17/164 useless extension candidates. Maximal degree in co-relation 460. Up to 57 conditions per place. [2021-03-11 20:24:36,595 INFO L132 encePairwiseOnDemand]: 132/137 looper letters, 7 selfloop transitions, 4 changer transitions 5/36 dead transitions. [2021-03-11 20:24:36,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 219 flow [2021-03-11 20:24:36,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:24:36,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:24:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 460 transitions. [2021-03-11 20:24:36,597 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8394160583941606 [2021-03-11 20:24:36,597 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 460 transitions. [2021-03-11 20:24:36,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 460 transitions. [2021-03-11 20:24:36,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:36,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 460 transitions. [2021-03-11 20:24:36,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2021-03-11 20:24:36,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 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) [2021-03-11 20:24:36,599 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 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) [2021-03-11 20:24:36,599 INFO L185 Difference]: Start difference. First operand has 40 places, 27 transitions, 142 flow. Second operand 4 states and 460 transitions. [2021-03-11 20:24:36,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 219 flow [2021-03-11 20:24:36,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 207 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-11 20:24:36,601 INFO L241 Difference]: Finished difference. Result has 42 places, 29 transitions, 164 flow [2021-03-11 20:24:36,601 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2021-03-11 20:24:36,601 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2021-03-11 20:24:36,601 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 164 flow [2021-03-11 20:24:36,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 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) [2021-03-11 20:24:36,601 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:36,601 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:36,601 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:24:36,601 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:36,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:36,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2115873829, now seen corresponding path program 1 times [2021-03-11 20:24:36,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:36,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816220866] [2021-03-11 20:24:36,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:36,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:24:36,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:36,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:24:36,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816220866] [2021-03-11 20:24:36,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:36,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:24:36,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953352935] [2021-03-11 20:24:36,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:24:36,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:36,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:24:36,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:24:36,628 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2021-03-11 20:24:36,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2021-03-11 20:24:36,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:36,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2021-03-11 20:24:36,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:36,649 INFO L129 PetriNetUnfolder]: 8/80 cut-off events. [2021-03-11 20:24:36,649 INFO L130 PetriNetUnfolder]: For 167/168 co-relation queries the response was YES. [2021-03-11 20:24:36,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 80 events. 8/80 cut-off events. For 167/168 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 345 event pairs, 2 based on Foata normal form. 6/85 useless extension candidates. Maximal degree in co-relation 252. Up to 23 conditions per place. [2021-03-11 20:24:36,649 INFO L132 encePairwiseOnDemand]: 133/137 looper letters, 4 selfloop transitions, 4 changer transitions 3/30 dead transitions. [2021-03-11 20:24:36,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 30 transitions, 194 flow [2021-03-11 20:24:36,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:24:36,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:24:36,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 571 transitions. [2021-03-11 20:24:36,651 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8335766423357664 [2021-03-11 20:24:36,651 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 571 transitions. [2021-03-11 20:24:36,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 571 transitions. [2021-03-11 20:24:36,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:36,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 571 transitions. [2021-03-11 20:24:36,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 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) [2021-03-11 20:24:36,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 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) [2021-03-11 20:24:36,654 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 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) [2021-03-11 20:24:36,654 INFO L185 Difference]: Start difference. First operand has 42 places, 29 transitions, 164 flow. Second operand 5 states and 571 transitions. [2021-03-11 20:24:36,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 30 transitions, 194 flow [2021-03-11 20:24:36,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 30 transitions, 185 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-11 20:24:36,656 INFO L241 Difference]: Finished difference. Result has 47 places, 27 transitions, 160 flow [2021-03-11 20:24:36,657 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=47, PETRI_TRANSITIONS=27} [2021-03-11 20:24:36,657 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2021-03-11 20:24:36,657 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 27 transitions, 160 flow [2021-03-11 20:24:36,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2021-03-11 20:24:36,658 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:36,658 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:36,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:24:36,659 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:36,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:36,659 INFO L82 PathProgramCache]: Analyzing trace with hash 754089839, now seen corresponding path program 1 times [2021-03-11 20:24:36,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:36,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749847594] [2021-03-11 20:24:36,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:36,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:36,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:24:36,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749847594] [2021-03-11 20:24:36,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:36,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:24:36,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127813360] [2021-03-11 20:24:36,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:24:36,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:36,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:24:36,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:24:36,697 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 137 [2021-03-11 20:24:36,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 27 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 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) [2021-03-11 20:24:36,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:36,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 137 [2021-03-11 20:24:36,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:36,765 INFO L129 PetriNetUnfolder]: 299/571 cut-off events. [2021-03-11 20:24:36,765 INFO L130 PetriNetUnfolder]: For 1958/2079 co-relation queries the response was YES. [2021-03-11 20:24:36,766 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 571 events. 299/571 cut-off events. For 1958/2079 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 3392 event pairs, 142 based on Foata normal form. 26/531 useless extension candidates. Maximal degree in co-relation 1419. Up to 385 conditions per place. [2021-03-11 20:24:36,768 INFO L132 encePairwiseOnDemand]: 130/137 looper letters, 10 selfloop transitions, 10 changer transitions 0/40 dead transitions. [2021-03-11 20:24:36,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 40 transitions, 226 flow [2021-03-11 20:24:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:24:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:24:36,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 522 transitions. [2021-03-11 20:24:36,770 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.762043795620438 [2021-03-11 20:24:36,770 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 522 transitions. [2021-03-11 20:24:36,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 522 transitions. [2021-03-11 20:24:36,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:36,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 522 transitions. [2021-03-11 20:24:36,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 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) [2021-03-11 20:24:36,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 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) [2021-03-11 20:24:36,772 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 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) [2021-03-11 20:24:36,772 INFO L185 Difference]: Start difference. First operand has 47 places, 27 transitions, 160 flow. Second operand 5 states and 522 transitions. [2021-03-11 20:24:36,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 40 transitions, 226 flow [2021-03-11 20:24:36,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 40 transitions, 216 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-11 20:24:36,775 INFO L241 Difference]: Finished difference. Result has 49 places, 36 transitions, 225 flow [2021-03-11 20:24:36,775 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2021-03-11 20:24:36,775 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2021-03-11 20:24:36,775 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 225 flow [2021-03-11 20:24:36,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 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) [2021-03-11 20:24:36,776 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:36,776 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:36,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:24:36,776 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:36,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:36,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1910993862, now seen corresponding path program 1 times [2021-03-11 20:24:36,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:36,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182098143] [2021-03-11 20:24:36,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:36,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:36,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:36,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:24:36,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182098143] [2021-03-11 20:24:36,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:36,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:24:36,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965351308] [2021-03-11 20:24:36,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:24:36,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:36,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:24:36,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:24:36,833 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 137 [2021-03-11 20:24:36,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 225 flow. Second operand has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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) [2021-03-11 20:24:36,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:36,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 137 [2021-03-11 20:24:36,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:36,912 INFO L129 PetriNetUnfolder]: 267/542 cut-off events. [2021-03-11 20:24:36,912 INFO L130 PetriNetUnfolder]: For 1764/3216 co-relation queries the response was YES. [2021-03-11 20:24:36,913 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2172 conditions, 542 events. 267/542 cut-off events. For 1764/3216 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 3289 event pairs, 39 based on Foata normal form. 143/635 useless extension candidates. Maximal degree in co-relation 2151. Up to 470 conditions per place. [2021-03-11 20:24:36,915 INFO L132 encePairwiseOnDemand]: 130/137 looper letters, 10 selfloop transitions, 19 changer transitions 0/49 dead transitions. [2021-03-11 20:24:36,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 359 flow [2021-03-11 20:24:36,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:24:36,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:24:36,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 731 transitions. [2021-03-11 20:24:36,916 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.762252346193952 [2021-03-11 20:24:36,916 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 731 transitions. [2021-03-11 20:24:36,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 731 transitions. [2021-03-11 20:24:36,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:36,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 731 transitions. [2021-03-11 20:24:36,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 104.42857142857143) internal successors, (731), 7 states have internal predecessors, (731), 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) [2021-03-11 20:24:36,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 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) [2021-03-11 20:24:36,919 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 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) [2021-03-11 20:24:36,919 INFO L185 Difference]: Start difference. First operand has 49 places, 36 transitions, 225 flow. Second operand 7 states and 731 transitions. [2021-03-11 20:24:36,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 359 flow [2021-03-11 20:24:36,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:24:36,922 INFO L241 Difference]: Finished difference. Result has 57 places, 45 transitions, 354 flow [2021-03-11 20:24:36,922 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2021-03-11 20:24:36,922 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2021-03-11 20:24:36,922 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 354 flow [2021-03-11 20:24:36,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 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) [2021-03-11 20:24:36,922 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:36,922 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:36,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:24:36,923 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:36,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:36,923 INFO L82 PathProgramCache]: Analyzing trace with hash -315937798, now seen corresponding path program 1 times [2021-03-11 20:24:36,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:36,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076855895] [2021-03-11 20:24:36,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:36,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:36,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:36,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:36,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:36,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:24:36,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076855895] [2021-03-11 20:24:36,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:36,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:24:36,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75447349] [2021-03-11 20:24:36,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:24:36,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:36,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:24:36,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:24:36,974 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 137 [2021-03-11 20:24:36,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 100.83333333333333) internal successors, (605), 6 states have internal predecessors, (605), 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) [2021-03-11 20:24:36,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:36,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 137 [2021-03-11 20:24:36,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:37,069 INFO L129 PetriNetUnfolder]: 245/509 cut-off events. [2021-03-11 20:24:37,069 INFO L130 PetriNetUnfolder]: For 2622/5588 co-relation queries the response was YES. [2021-03-11 20:24:37,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2854 conditions, 509 events. 245/509 cut-off events. For 2622/5588 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 3202 event pairs, 6 based on Foata normal form. 251/711 useless extension candidates. Maximal degree in co-relation 2829. Up to 458 conditions per place. [2021-03-11 20:24:37,071 INFO L132 encePairwiseOnDemand]: 130/137 looper letters, 4 selfloop transitions, 28 changer transitions 6/58 dead transitions. [2021-03-11 20:24:37,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 58 transitions, 556 flow [2021-03-11 20:24:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 20:24:37,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 20:24:37,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 940 transitions. [2021-03-11 20:24:37,073 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7623682076236821 [2021-03-11 20:24:37,073 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 940 transitions. [2021-03-11 20:24:37,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 940 transitions. [2021-03-11 20:24:37,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:37,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 940 transitions. [2021-03-11 20:24:37,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.44444444444444) internal successors, (940), 9 states have internal predecessors, (940), 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) [2021-03-11 20:24:37,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 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) [2021-03-11 20:24:37,077 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 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) [2021-03-11 20:24:37,077 INFO L185 Difference]: Start difference. First operand has 57 places, 45 transitions, 354 flow. Second operand 9 states and 940 transitions. [2021-03-11 20:24:37,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 58 transitions, 556 flow [2021-03-11 20:24:37,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 506 flow, removed 17 selfloop flow, removed 3 redundant places. [2021-03-11 20:24:37,083 INFO L241 Difference]: Finished difference. Result has 65 places, 52 transitions, 458 flow [2021-03-11 20:24:37,083 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=458, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2021-03-11 20:24:37,083 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 32 predicate places. [2021-03-11 20:24:37,083 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 458 flow [2021-03-11 20:24:37,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 100.83333333333333) internal successors, (605), 6 states have internal predecessors, (605), 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) [2021-03-11 20:24:37,084 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:24:37,084 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:24:37,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:24:37,084 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:24:37,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:24:37,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1243859636, now seen corresponding path program 1 times [2021-03-11 20:24:37,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:24:37,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973172671] [2021-03-11 20:24:37,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:24:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:24:37,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:37,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:37,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:37,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:37,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:37,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:37,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:37,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:37,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:24:37,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:24:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:24:37,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973172671] [2021-03-11 20:24:37,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:24:37,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:24:37,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809953239] [2021-03-11 20:24:37,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:24:37,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:24:37,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:24:37,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:24:37,133 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 137 [2021-03-11 20:24:37,134 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 458 flow. Second operand has 7 states, 7 states have (on average 100.85714285714286) internal successors, (706), 7 states have internal predecessors, (706), 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) [2021-03-11 20:24:37,134 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:24:37,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 137 [2021-03-11 20:24:37,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:24:37,231 INFO L129 PetriNetUnfolder]: 203/455 cut-off events. [2021-03-11 20:24:37,231 INFO L130 PetriNetUnfolder]: For 3185/4724 co-relation queries the response was YES. [2021-03-11 20:24:37,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2798 conditions, 455 events. 203/455 cut-off events. For 3185/4724 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 2974 event pairs, 3 based on Foata normal form. 254/660 useless extension candidates. Maximal degree in co-relation 2770. Up to 297 conditions per place. [2021-03-11 20:24:37,233 INFO L132 encePairwiseOnDemand]: 130/137 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2021-03-11 20:24:37,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 54 transitions, 532 flow [2021-03-11 20:24:37,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 20:24:37,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 20:24:37,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1135 transitions. [2021-03-11 20:24:37,235 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7531519575315195 [2021-03-11 20:24:37,235 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1135 transitions. [2021-03-11 20:24:37,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1135 transitions. [2021-03-11 20:24:37,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:24:37,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1135 transitions. [2021-03-11 20:24:37,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 103.18181818181819) internal successors, (1135), 11 states have internal predecessors, (1135), 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) [2021-03-11 20:24:37,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 137.0) internal successors, (1644), 12 states have internal predecessors, (1644), 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) [2021-03-11 20:24:37,239 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 137.0) internal successors, (1644), 12 states have internal predecessors, (1644), 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) [2021-03-11 20:24:37,240 INFO L185 Difference]: Start difference. First operand has 65 places, 52 transitions, 458 flow. Second operand 11 states and 1135 transitions. [2021-03-11 20:24:37,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 54 transitions, 532 flow [2021-03-11 20:24:37,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 54 transitions, 376 flow, removed 42 selfloop flow, removed 13 redundant places. [2021-03-11 20:24:37,251 INFO L241 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2021-03-11 20:24:37,251 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2021-03-11 20:24:37,251 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2021-03-11 20:24:37,251 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2021-03-11 20:24:37,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 100.85714285714286) internal successors, (706), 7 states have internal predecessors, (706), 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) [2021-03-11 20:24:37,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 20:24:37,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:24:37 BasicIcfg [2021-03-11 20:24:37,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:24:37,256 INFO L168 Benchmark]: Toolchain (without parser) took 4148.15 ms. Allocated memory was 255.9 MB in the beginning and 446.7 MB in the end (delta: 190.8 MB). Free memory was 235.1 MB in the beginning and 342.0 MB in the end (delta: -106.9 MB). Peak memory consumption was 83.3 MB. Max. memory is 16.0 GB. [2021-03-11 20:24:37,256 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:24:37,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.71 ms. Allocated memory was 255.9 MB in the beginning and 371.2 MB in the end (delta: 115.3 MB). Free memory was 234.2 MB in the beginning and 333.9 MB in the end (delta: -99.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 20:24:37,258 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.15 ms. Allocated memory is still 371.2 MB. Free memory was 333.9 MB in the beginning and 332.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:24:37,259 INFO L168 Benchmark]: Boogie Preprocessor took 13.63 ms. Allocated memory is still 371.2 MB. Free memory was 332.1 MB in the beginning and 330.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:24:37,260 INFO L168 Benchmark]: RCFGBuilder took 393.64 ms. Allocated memory is still 371.2 MB. Free memory was 330.7 MB in the beginning and 306.9 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:24:37,260 INFO L168 Benchmark]: TraceAbstraction took 3320.80 ms. Allocated memory was 371.2 MB in the beginning and 446.7 MB in the end (delta: 75.5 MB). Free memory was 306.5 MB in the beginning and 342.0 MB in the end (delta: -35.5 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:24:37,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 382.71 ms. Allocated memory was 255.9 MB in the beginning and 371.2 MB in the end (delta: 115.3 MB). Free memory was 234.2 MB in the beginning and 333.9 MB in the end (delta: -99.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 30.15 ms. Allocated memory is still 371.2 MB. Free memory was 333.9 MB in the beginning and 332.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.63 ms. Allocated memory is still 371.2 MB. Free memory was 332.1 MB in the beginning and 330.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 393.64 ms. Allocated memory is still 371.2 MB. Free memory was 330.7 MB in the beginning and 306.9 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3320.80 ms. Allocated memory was 371.2 MB in the beginning and 446.7 MB in the end (delta: 75.5 MB). Free memory was 306.5 MB in the beginning and 342.0 MB in the end (delta: -35.5 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1983.8ms, 79 PlacesBefore, 33 PlacesAfterwards, 67 TransitionsBefore, 21 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 52 TotalNumberOfCompositions, 2266 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1304, positive: 1224, positive conditional: 0, positive unconditional: 1224, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 858, positive: 816, positive conditional: 0, positive unconditional: 816, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 858, positive: 801, positive conditional: 0, positive unconditional: 801, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 57, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 201, positive: 62, positive conditional: 0, positive unconditional: 62, negative: 139, negative conditional: 0, negative unconditional: 139, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1304, positive: 408, positive conditional: 0, positive unconditional: 408, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 858, unknown conditional: 0, unknown unconditional: 858] , Statistics on independence cache: Total cache size (in pairs): 94, Positive cache size: 81, Positive conditional cache size: 0, Positive unconditional cache size: 81, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3248.4ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 600.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2069.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 38 SDtfs, 36 SDslu, 28 SDs, 0 SdLazy, 186 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 122.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 110.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=458occurred in iteration=8, InterpolantAutomatonStates: 52, 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: 14.3ms SsaConstructionTime, 138.5ms SatisfiabilityAnalysisTime, 301.5ms InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 340 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...