/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/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:20:44,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:20:44,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:20:44,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 20:20:44,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:20:44,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:20:44,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:20:44,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:20:44,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:20:44,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:20:44,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:20:44,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:20:44,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:20:44,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:20:44,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:20:44,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:20:44,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:20:44,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:20:44,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:20:44,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:20:44,610 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 20:20:44,646 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:20:44,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:20:44,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:20:44,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:20:44,649 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:20:44,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:20:44,650 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:20:44,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:20:44,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:20:44,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:20:44,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:20:44,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:20:44,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:20:44,652 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:20:44,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:20:44,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:20:44,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:20:44,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:20:44,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:20:44,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:20:44,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:20:44,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:20:44,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:20:44,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:20:44,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:20:44,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:20:44,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:20:44,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:20:44,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:20:44,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:20:44,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:20:44,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:20:44,995 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:20:44,997 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:20:44,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2021-03-11 20:20:45,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fc459d26/71cdc66fc48b417aa3af7105fe2fc8be/FLAG65a0c8f7b [2021-03-11 20:20:45,614 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:20:45,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2021-03-11 20:20:45,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fc459d26/71cdc66fc48b417aa3af7105fe2fc8be/FLAG65a0c8f7b [2021-03-11 20:20:46,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fc459d26/71cdc66fc48b417aa3af7105fe2fc8be [2021-03-11 20:20:46,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:20:46,084 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:20:46,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:20:46,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:20:46,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:20:46,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:20:46" (1/1) ... [2021-03-11 20:20:46,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9abdaf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:46, skipping insertion in model container [2021-03-11 20:20:46,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:20:46" (1/1) ... [2021-03-11 20:20:46,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:20:46,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:20:46,295 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/safe004_tso.opt.i[949,962] [2021-03-11 20:20:46,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:20:46,506 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:20:46,517 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/safe004_tso.opt.i[949,962] [2021-03-11 20:20:46,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:20:46,604 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:20:46,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:46 WrapperNode [2021-03-11 20:20:46,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:20:46,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:20:46,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:20:46,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:20:46,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:46" (1/1) ... [2021-03-11 20:20:46,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:46" (1/1) ... [2021-03-11 20:20:46,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:20:46,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:20:46,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:20:46,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:20:46,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:46" (1/1) ... [2021-03-11 20:20:46,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:46" (1/1) ... [2021-03-11 20:20:46,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:46" (1/1) ... [2021-03-11 20:20:46,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:46" (1/1) ... [2021-03-11 20:20:46,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:46" (1/1) ... [2021-03-11 20:20:46,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:46" (1/1) ... [2021-03-11 20:20:46,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:46" (1/1) ... [2021-03-11 20:20:46,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:20:46,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:20:46,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:20:46,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:20:46,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:46" (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 20:20:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:20:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:20:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:20:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:20:46,769 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:20:46,769 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:20:46,770 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:20:46,770 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:20:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:20:46,771 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:20:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:20:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:20:46,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:20:46,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:20:46,772 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 20:20:47,124 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:20:47,124 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:20:47,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:20:47 BoogieIcfgContainer [2021-03-11 20:20:47,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:20:47,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:20:47,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:20:47,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:20:47,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:20:46" (1/3) ... [2021-03-11 20:20:47,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d30da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:20:47, skipping insertion in model container [2021-03-11 20:20:47,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:20:46" (2/3) ... [2021-03-11 20:20:47,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d30da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:20:47, skipping insertion in model container [2021-03-11 20:20:47,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:20:47" (3/3) ... [2021-03-11 20:20:47,134 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2021-03-11 20:20:47,139 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:20:47,143 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:20:47,143 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:20:47,172 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,172 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,172 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,173 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,173 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,173 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,173 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,173 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,173 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,173 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,174 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,174 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,175 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,175 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,175 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,175 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,175 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,175 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,175 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,175 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,176 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,176 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,176 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,176 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,177 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,178 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,178 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,178 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,179 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,179 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,179 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,179 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,179 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,180 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,180 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,180 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,188 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,189 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,189 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,189 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,193 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,194 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,194 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,194 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:20:47,196 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:20:47,216 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 20:20:47,243 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:20:47,243 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:20:47,243 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:20:47,243 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:20:47,243 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:20:47,243 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:20:47,244 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:20:47,244 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:20:47,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 20:20:47,299 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-11 20:20:47,300 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:20:47,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 20:20:47,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 20:20:47,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-11 20:20:47,310 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:20:47,317 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-11 20:20:47,319 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-11 20:20:47,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-11 20:20:47,342 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-11 20:20:47,343 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:20:47,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-11 20:20:47,345 INFO L116 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-11 20:20:49,521 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 20:20:49,761 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 20:20:49,845 INFO L131 LiptonReduction]: Checked pairs total: 1775 [2021-03-11 20:20:49,846 INFO L133 LiptonReduction]: Total number of compositions: 46 [2021-03-11 20:20:49,847 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2539 [2021-03-11 20:20:49,853 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-11 20:20:49,853 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:20:49,854 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:20:49,854 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:20:49,854 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:20:49,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:20:49,858 INFO L82 PathProgramCache]: Analyzing trace with hash 2056446484, now seen corresponding path program 1 times [2021-03-11 20:20:49,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:20:49,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534625150] [2021-03-11 20:20:49,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:20:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:20:49,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:20:49,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:20:49,979 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 20:20:49,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534625150] [2021-03-11 20:20:49,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:20:49,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:20:49,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073839811] [2021-03-11 20:20:49,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 20:20:49,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:20:49,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 20:20:49,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 20:20:49,999 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 120 [2021-03-11 20:20:50,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 2 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 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 20:20:50,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:20:50,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 120 [2021-03-11 20:20:50,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:20:50,008 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-11 20:20:50,008 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:20:50,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-11 20:20:50,009 INFO L132 encePairwiseOnDemand]: 119/120 looper letters, 0 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2021-03-11 20:20:50,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 43 flow [2021-03-11 20:20:50,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 20:20:50,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-11 20:20:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 227 transitions. [2021-03-11 20:20:50,018 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9458333333333333 [2021-03-11 20:20:50,018 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 227 transitions. [2021-03-11 20:20:50,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 227 transitions. [2021-03-11 20:20:50,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:20:50,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 227 transitions. [2021-03-11 20:20:50,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 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 20:20:50,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 20:20:50,027 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 20:20:50,029 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states and 227 transitions. [2021-03-11 20:20:50,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 43 flow [2021-03-11 20:20:50,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 40 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:20:50,032 INFO L241 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2021-03-11 20:20:50,033 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2021-03-11 20:20:50,034 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2021-03-11 20:20:50,034 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2021-03-11 20:20:50,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 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 20:20:50,034 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:20:50,034 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:20:50,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:20:50,035 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:20:50,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:20:50,035 INFO L82 PathProgramCache]: Analyzing trace with hash -674668314, now seen corresponding path program 1 times [2021-03-11 20:20:50,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:20:50,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968341669] [2021-03-11 20:20:50,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:20:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:20:50,113 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:20:50,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:20:50,133 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 20:20:50,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968341669] [2021-03-11 20:20:50,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:20:50,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:20:50,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449500756] [2021-03-11 20:20:50,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:20:50,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:20:50,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:20:50,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:20:50,136 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 120 [2021-03-11 20:20:50,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 20:20:50,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:20:50,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 120 [2021-03-11 20:20:50,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:20:50,200 INFO L129 PetriNetUnfolder]: 91/209 cut-off events. [2021-03-11 20:20:50,201 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:20:50,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 209 events. 91/209 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 946 event pairs, 29 based on Foata normal form. 20/220 useless extension candidates. Maximal degree in co-relation 381. Up to 113 conditions per place. [2021-03-11 20:20:50,204 INFO L132 encePairwiseOnDemand]: 112/120 looper letters, 7 selfloop transitions, 7 changer transitions 0/23 dead transitions. [2021-03-11 20:20:50,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 80 flow [2021-03-11 20:20:50,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:20:50,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:20:50,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2021-03-11 20:20:50,210 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7833333333333333 [2021-03-11 20:20:50,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2021-03-11 20:20:50,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2021-03-11 20:20:50,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:20:50,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2021-03-11 20:20:50,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 20:20:50,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 20:20:50,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 20:20:50,215 INFO L185 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 282 transitions. [2021-03-11 20:20:50,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 80 flow [2021-03-11 20:20:50,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:20:50,217 INFO L241 Difference]: Finished difference. Result has 29 places, 23 transitions, 94 flow [2021-03-11 20:20:50,217 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2021-03-11 20:20:50,218 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2021-03-11 20:20:50,218 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 94 flow [2021-03-11 20:20:50,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 20:20:50,218 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:20:50,218 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:20:50,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:20:50,219 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:20:50,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:20:50,219 INFO L82 PathProgramCache]: Analyzing trace with hash 560118217, now seen corresponding path program 1 times [2021-03-11 20:20:50,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:20:50,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817695248] [2021-03-11 20:20:50,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:20:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:20:50,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:20:50,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:20:50,299 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:20:50,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:20:50,310 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 20:20:50,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817695248] [2021-03-11 20:20:50,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:20:50,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:20:50,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119819208] [2021-03-11 20:20:50,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:20:50,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:20:50,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:20:50,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:20:50,314 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 120 [2021-03-11 20:20:50,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 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 20:20:50,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:20:50,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 120 [2021-03-11 20:20:50,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:20:50,367 INFO L129 PetriNetUnfolder]: 68/163 cut-off events. [2021-03-11 20:20:50,368 INFO L130 PetriNetUnfolder]: For 56/132 co-relation queries the response was YES. [2021-03-11 20:20:50,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 163 events. 68/163 cut-off events. For 56/132 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 643 event pairs, 4 based on Foata normal form. 1/160 useless extension candidates. Maximal degree in co-relation 497. Up to 88 conditions per place. [2021-03-11 20:20:50,371 INFO L132 encePairwiseOnDemand]: 112/120 looper letters, 10 selfloop transitions, 8 changer transitions 4/31 dead transitions. [2021-03-11 20:20:50,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 178 flow [2021-03-11 20:20:50,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:20:50,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:20:50,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2021-03-11 20:20:50,373 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7791666666666667 [2021-03-11 20:20:50,373 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 374 transitions. [2021-03-11 20:20:50,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 374 transitions. [2021-03-11 20:20:50,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:20:50,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 374 transitions. [2021-03-11 20:20:50,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 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 20:20:50,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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 20:20:50,376 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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 20:20:50,376 INFO L185 Difference]: Start difference. First operand has 29 places, 23 transitions, 94 flow. Second operand 4 states and 374 transitions. [2021-03-11 20:20:50,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 178 flow [2021-03-11 20:20:50,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:20:50,379 INFO L241 Difference]: Finished difference. Result has 33 places, 27 transitions, 138 flow [2021-03-11 20:20:50,380 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2021-03-11 20:20:50,380 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2021-03-11 20:20:50,380 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 138 flow [2021-03-11 20:20:50,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 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 20:20:50,383 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:20:50,383 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:20:50,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:20:50,388 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:20:50,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:20:50,389 INFO L82 PathProgramCache]: Analyzing trace with hash 182812810, now seen corresponding path program 1 times [2021-03-11 20:20:50,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:20:50,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843066186] [2021-03-11 20:20:50,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:20:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:20:50,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:20:50,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:20:50,471 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:20:50,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:20:50,480 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 20:20:50,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843066186] [2021-03-11 20:20:50,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:20:50,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:20:50,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62562614] [2021-03-11 20:20:50,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:20:50,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:20:50,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:20:50,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:20:50,482 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 120 [2021-03-11 20:20:50,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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 20:20:50,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:20:50,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 120 [2021-03-11 20:20:50,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:20:50,514 INFO L129 PetriNetUnfolder]: 48/123 cut-off events. [2021-03-11 20:20:50,515 INFO L130 PetriNetUnfolder]: For 113/206 co-relation queries the response was YES. [2021-03-11 20:20:50,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 123 events. 48/123 cut-off events. For 113/206 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 430 event pairs, 1 based on Foata normal form. 6/125 useless extension candidates. Maximal degree in co-relation 436. Up to 66 conditions per place. [2021-03-11 20:20:50,516 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 17 selfloop transitions, 7 changer transitions 2/35 dead transitions. [2021-03-11 20:20:50,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 238 flow [2021-03-11 20:20:50,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:20:50,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:20:50,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2021-03-11 20:20:50,517 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7770833333333333 [2021-03-11 20:20:50,517 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2021-03-11 20:20:50,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2021-03-11 20:20:50,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:20:50,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2021-03-11 20:20:50,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 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 20:20:50,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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 20:20:50,520 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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 20:20:50,520 INFO L185 Difference]: Start difference. First operand has 33 places, 27 transitions, 138 flow. Second operand 4 states and 373 transitions. [2021-03-11 20:20:50,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 238 flow [2021-03-11 20:20:50,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 35 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:20:50,522 INFO L241 Difference]: Finished difference. Result has 38 places, 31 transitions, 205 flow [2021-03-11 20:20:50,523 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2021-03-11 20:20:50,523 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2021-03-11 20:20:50,523 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 205 flow [2021-03-11 20:20:50,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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 20:20:50,523 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:20:50,523 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:20:50,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:20:50,524 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:20:50,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:20:50,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1373043221, now seen corresponding path program 1 times [2021-03-11 20:20:50,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:20:50,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545444089] [2021-03-11 20:20:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:20:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:20:50,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:20:50,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:20:50,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:20:50,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:20:50,574 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:20:50,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:20:50,584 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 20:20:50,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545444089] [2021-03-11 20:20:50,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:20:50,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:20:50,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635909514] [2021-03-11 20:20:50,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:20:50,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:20:50,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:20:50,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:20:50,586 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 120 [2021-03-11 20:20:50,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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 20:20:50,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:20:50,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 120 [2021-03-11 20:20:50,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:20:50,624 INFO L129 PetriNetUnfolder]: 44/126 cut-off events. [2021-03-11 20:20:50,624 INFO L130 PetriNetUnfolder]: For 192/230 co-relation queries the response was YES. [2021-03-11 20:20:50,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 126 events. 44/126 cut-off events. For 192/230 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 490 event pairs, 1 based on Foata normal form. 6/131 useless extension candidates. Maximal degree in co-relation 529. Up to 70 conditions per place. [2021-03-11 20:20:50,625 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 12 selfloop transitions, 12 changer transitions 18/51 dead transitions. [2021-03-11 20:20:50,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 467 flow [2021-03-11 20:20:50,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:20:50,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:20:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 466 transitions. [2021-03-11 20:20:50,627 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7766666666666666 [2021-03-11 20:20:50,627 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 466 transitions. [2021-03-11 20:20:50,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 466 transitions. [2021-03-11 20:20:50,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:20:50,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 466 transitions. [2021-03-11 20:20:50,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.2) internal successors, (466), 5 states have internal predecessors, (466), 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 20:20:50,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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 20:20:50,630 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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 20:20:50,630 INFO L185 Difference]: Start difference. First operand has 38 places, 31 transitions, 205 flow. Second operand 5 states and 466 transitions. [2021-03-11 20:20:50,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 467 flow [2021-03-11 20:20:50,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 455 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-11 20:20:50,635 INFO L241 Difference]: Finished difference. Result has 42 places, 30 transitions, 236 flow [2021-03-11 20:20:50,635 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2021-03-11 20:20:50,635 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2021-03-11 20:20:50,635 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 236 flow [2021-03-11 20:20:50,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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 20:20:50,635 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:20:50,636 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:20:50,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:20:50,636 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:20:50,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:20:50,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1845349438, now seen corresponding path program 1 times [2021-03-11 20:20:50,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:20:50,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991606938] [2021-03-11 20:20:50,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:20:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:20:50,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:20:50,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:20:50,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:20:50,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:20:50,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:20:50,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:20:50,670 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:20:50,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:20:50,682 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 20:20:50,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991606938] [2021-03-11 20:20:50,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:20:50,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:20:50,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524923148] [2021-03-11 20:20:50,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:20:50,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:20:50,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:20:50,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:20:50,684 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 120 [2021-03-11 20:20:50,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 90.2) internal successors, (451), 5 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 20:20:50,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:20:50,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 120 [2021-03-11 20:20:50,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:20:50,747 INFO L129 PetriNetUnfolder]: 22/100 cut-off events. [2021-03-11 20:20:50,747 INFO L130 PetriNetUnfolder]: For 219/245 co-relation queries the response was YES. [2021-03-11 20:20:50,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 100 events. 22/100 cut-off events. For 219/245 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 409 event pairs, 0 based on Foata normal form. 7/107 useless extension candidates. Maximal degree in co-relation 460. Up to 53 conditions per place. [2021-03-11 20:20:50,748 INFO L132 encePairwiseOnDemand]: 112/120 looper letters, 7 selfloop transitions, 14 changer transitions 17/47 dead transitions. [2021-03-11 20:20:50,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 47 transitions, 464 flow [2021-03-11 20:20:50,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:20:50,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:20:50,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 649 transitions. [2021-03-11 20:20:50,750 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7726190476190476 [2021-03-11 20:20:50,750 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 649 transitions. [2021-03-11 20:20:50,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 649 transitions. [2021-03-11 20:20:50,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:20:50,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 649 transitions. [2021-03-11 20:20:50,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.71428571428571) internal successors, (649), 7 states have internal predecessors, (649), 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 20:20:50,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 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 20:20:50,754 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 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 20:20:50,754 INFO L185 Difference]: Start difference. First operand has 42 places, 30 transitions, 236 flow. Second operand 7 states and 649 transitions. [2021-03-11 20:20:50,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 47 transitions, 464 flow [2021-03-11 20:20:50,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 428 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-11 20:20:50,757 INFO L241 Difference]: Finished difference. Result has 47 places, 28 transitions, 236 flow [2021-03-11 20:20:50,757 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2021-03-11 20:20:50,757 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2021-03-11 20:20:50,757 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 236 flow [2021-03-11 20:20:50,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.2) internal successors, (451), 5 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 20:20:50,758 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:20:50,758 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:20:50,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:20:50,758 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:20:50,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:20:50,758 INFO L82 PathProgramCache]: Analyzing trace with hash -412114848, now seen corresponding path program 2 times [2021-03-11 20:20:50,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:20:50,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920282008] [2021-03-11 20:20:50,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:20:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:20:50,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:20:50,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:20:50,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:20:50,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:20:50,790 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:20:50,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:20:50,800 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 20:20:50,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920282008] [2021-03-11 20:20:50,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:20:50,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:20:50,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360303378] [2021-03-11 20:20:50,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:20:50,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:20:50,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:20:50,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:20:50,802 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 120 [2021-03-11 20:20:50,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 90.2) internal successors, (451), 5 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 20:20:50,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:20:50,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 120 [2021-03-11 20:20:50,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:20:50,829 INFO L129 PetriNetUnfolder]: 8/59 cut-off events. [2021-03-11 20:20:50,829 INFO L130 PetriNetUnfolder]: For 149/158 co-relation queries the response was YES. [2021-03-11 20:20:50,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 59 events. 8/59 cut-off events. For 149/158 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 207 event pairs, 1 based on Foata normal form. 4/63 useless extension candidates. Maximal degree in co-relation 270. Up to 28 conditions per place. [2021-03-11 20:20:50,830 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 3 selfloop transitions, 5 changer transitions 15/32 dead transitions. [2021-03-11 20:20:50,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 32 transitions, 327 flow [2021-03-11 20:20:50,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:20:50,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:20:50,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 461 transitions. [2021-03-11 20:20:50,832 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7683333333333333 [2021-03-11 20:20:50,832 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 461 transitions. [2021-03-11 20:20:50,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 461 transitions. [2021-03-11 20:20:50,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:20:50,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 461 transitions. [2021-03-11 20:20:50,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 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 20:20:50,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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 20:20:50,835 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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 20:20:50,835 INFO L185 Difference]: Start difference. First operand has 47 places, 28 transitions, 236 flow. Second operand 5 states and 461 transitions. [2021-03-11 20:20:50,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 32 transitions, 327 flow [2021-03-11 20:20:50,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 32 transitions, 313 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-11 20:20:50,838 INFO L241 Difference]: Finished difference. Result has 48 places, 17 transitions, 120 flow [2021-03-11 20:20:50,838 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=48, PETRI_TRANSITIONS=17} [2021-03-11 20:20:50,838 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 21 predicate places. [2021-03-11 20:20:50,838 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 17 transitions, 120 flow [2021-03-11 20:20:50,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.2) internal successors, (451), 5 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 20:20:50,838 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:20:50,838 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:20:50,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:20:50,839 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:20:50,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:20:50,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1175094302, now seen corresponding path program 1 times [2021-03-11 20:20:50,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:20:50,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658412396] [2021-03-11 20:20:50,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:20:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:20:50,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:20:50,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:20:50,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:20:50,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:20:50,908 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 20:20:50,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658412396] [2021-03-11 20:20:50,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:20:50,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:20:50,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562010631] [2021-03-11 20:20:50,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:20:50,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:20:50,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:20:50,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:20:50,910 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 120 [2021-03-11 20:20:50,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 17 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 20:20:50,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:20:50,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 120 [2021-03-11 20:20:50,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:20:50,942 INFO L129 PetriNetUnfolder]: 23/66 cut-off events. [2021-03-11 20:20:50,942 INFO L130 PetriNetUnfolder]: For 165/174 co-relation queries the response was YES. [2021-03-11 20:20:50,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 66 events. 23/66 cut-off events. For 165/174 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 193 event pairs, 9 based on Foata normal form. 5/65 useless extension candidates. Maximal degree in co-relation 193. Up to 39 conditions per place. [2021-03-11 20:20:50,943 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 5 selfloop transitions, 3 changer transitions 8/27 dead transitions. [2021-03-11 20:20:50,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 27 transitions, 172 flow [2021-03-11 20:20:50,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:20:50,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:20:50,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2021-03-11 20:20:50,945 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7466666666666667 [2021-03-11 20:20:50,945 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2021-03-11 20:20:50,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2021-03-11 20:20:50,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:20:50,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2021-03-11 20:20:50,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 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 20:20:50,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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 20:20:50,948 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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 20:20:50,948 INFO L185 Difference]: Start difference. First operand has 48 places, 17 transitions, 120 flow. Second operand 5 states and 448 transitions. [2021-03-11 20:20:50,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 27 transitions, 172 flow [2021-03-11 20:20:50,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 113 flow, removed 6 selfloop flow, removed 17 redundant places. [2021-03-11 20:20:50,949 INFO L241 Difference]: Finished difference. Result has 38 places, 19 transitions, 92 flow [2021-03-11 20:20:50,949 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=19} [2021-03-11 20:20:50,950 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2021-03-11 20:20:50,950 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 19 transitions, 92 flow [2021-03-11 20:20:50,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 20:20:50,950 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:20:50,950 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:20:50,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:20:50,950 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:20:50,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:20:50,951 INFO L82 PathProgramCache]: Analyzing trace with hash 2068175754, now seen corresponding path program 1 times [2021-03-11 20:20:50,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:20:50,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803127217] [2021-03-11 20:20:50,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:20:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:20:50,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:20:50,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:20:51,002 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:20:51,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:20:51,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:20:51,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:20:51,009 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 20:20:51,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803127217] [2021-03-11 20:20:51,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:20:51,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:20:51,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980204947] [2021-03-11 20:20:51,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:20:51,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:20:51,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:20:51,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:20:51,012 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 120 [2021-03-11 20:20:51,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 19 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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 20:20:51,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:20:51,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 120 [2021-03-11 20:20:51,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:20:51,049 INFO L129 PetriNetUnfolder]: 9/40 cut-off events. [2021-03-11 20:20:51,049 INFO L130 PetriNetUnfolder]: For 74/113 co-relation queries the response was YES. [2021-03-11 20:20:51,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 40 events. 9/40 cut-off events. For 74/113 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 86 event pairs, 1 based on Foata normal form. 9/47 useless extension candidates. Maximal degree in co-relation 136. Up to 27 conditions per place. [2021-03-11 20:20:51,050 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 3 selfloop transitions, 5 changer transitions 10/29 dead transitions. [2021-03-11 20:20:51,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 29 transitions, 186 flow [2021-03-11 20:20:51,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:20:51,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:20:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 536 transitions. [2021-03-11 20:20:51,052 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2021-03-11 20:20:51,052 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 536 transitions. [2021-03-11 20:20:51,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 536 transitions. [2021-03-11 20:20:51,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:20:51,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 536 transitions. [2021-03-11 20:20:51,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.33333333333333) internal successors, (536), 6 states have internal predecessors, (536), 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 20:20:51,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 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 20:20:51,055 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 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 20:20:51,055 INFO L185 Difference]: Start difference. First operand has 38 places, 19 transitions, 92 flow. Second operand 6 states and 536 transitions. [2021-03-11 20:20:51,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 29 transitions, 186 flow [2021-03-11 20:20:51,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 29 transitions, 181 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-11 20:20:51,057 INFO L241 Difference]: Finished difference. Result has 42 places, 19 transitions, 111 flow [2021-03-11 20:20:51,057 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=42, PETRI_TRANSITIONS=19} [2021-03-11 20:20:51,057 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2021-03-11 20:20:51,057 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 19 transitions, 111 flow [2021-03-11 20:20:51,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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 20:20:51,057 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:20:51,057 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:20:51,058 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 20:20:51,058 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:20:51,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:20:51,058 INFO L82 PathProgramCache]: Analyzing trace with hash -293663651, now seen corresponding path program 1 times [2021-03-11 20:20:51,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:20:51,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369521652] [2021-03-11 20:20:51,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:20:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:20:51,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:20:51,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:20:51,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:20:51,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:20:51,112 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:20:51,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:20:51,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:20:51,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:20:51,122 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 20:20:51,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369521652] [2021-03-11 20:20:51,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:20:51,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:20:51,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436759095] [2021-03-11 20:20:51,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:20:51,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:20:51,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:20:51,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:20:51,128 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 120 [2021-03-11 20:20:51,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 19 transitions, 111 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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 20:20:51,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:20:51,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 120 [2021-03-11 20:20:51,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:20:51,162 INFO L129 PetriNetUnfolder]: 1/20 cut-off events. [2021-03-11 20:20:51,163 INFO L130 PetriNetUnfolder]: For 56/76 co-relation queries the response was YES. [2021-03-11 20:20:51,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 20 events. 1/20 cut-off events. For 56/76 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 5/25 useless extension candidates. Maximal degree in co-relation 70. Up to 9 conditions per place. [2021-03-11 20:20:51,163 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2021-03-11 20:20:51,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 20 transitions, 133 flow [2021-03-11 20:20:51,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:20:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:20:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 612 transitions. [2021-03-11 20:20:51,166 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7285714285714285 [2021-03-11 20:20:51,166 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 612 transitions. [2021-03-11 20:20:51,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 612 transitions. [2021-03-11 20:20:51,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:20:51,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 612 transitions. [2021-03-11 20:20:51,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.42857142857143) internal successors, (612), 7 states have internal predecessors, (612), 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 20:20:51,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 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 20:20:51,171 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 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 20:20:51,171 INFO L185 Difference]: Start difference. First operand has 42 places, 19 transitions, 111 flow. Second operand 7 states and 612 transitions. [2021-03-11 20:20:51,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 20 transitions, 133 flow [2021-03-11 20:20:51,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 20 transitions, 104 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-11 20:20:51,175 INFO L241 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2021-03-11 20:20:51,175 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2021-03-11 20:20:51,175 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2021-03-11 20:20:51,175 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2021-03-11 20:20:51,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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 20:20:51,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 20:20:51,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:20:51 BasicIcfg [2021-03-11 20:20:51,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:20:51,180 INFO L168 Benchmark]: Toolchain (without parser) took 5100.73 ms. Allocated memory was 255.9 MB in the beginning and 448.8 MB in the end (delta: 192.9 MB). Free memory was 235.5 MB in the beginning and 425.3 MB in the end (delta: -189.8 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.0 GB. [2021-03-11 20:20:51,180 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:20:51,181 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.39 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 234.6 MB in the beginning and 336.2 MB in the end (delta: -101.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-11 20:20:51,181 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.19 ms. Allocated memory is still 373.3 MB. Free memory was 336.2 MB in the beginning and 334.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:20:51,182 INFO L168 Benchmark]: Boogie Preprocessor took 30.01 ms. Allocated memory is still 373.3 MB. Free memory was 334.4 MB in the beginning and 332.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:20:51,185 INFO L168 Benchmark]: RCFGBuilder took 437.61 ms. Allocated memory is still 373.3 MB. Free memory was 332.9 MB in the beginning and 349.4 MB in the end (delta: -16.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. [2021-03-11 20:20:51,186 INFO L168 Benchmark]: TraceAbstraction took 4050.32 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 348.7 MB in the beginning and 425.3 MB in the end (delta: -76.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:20:51,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 517.39 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 234.6 MB in the beginning and 336.2 MB in the end (delta: -101.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 53.19 ms. Allocated memory is still 373.3 MB. Free memory was 336.2 MB in the beginning and 334.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.01 ms. Allocated memory is still 373.3 MB. Free memory was 334.4 MB in the beginning and 332.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 437.61 ms. Allocated memory is still 373.3 MB. Free memory was 332.9 MB in the beginning and 349.4 MB in the end (delta: -16.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4050.32 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 348.7 MB in the beginning and 425.3 MB in the end (delta: -76.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2526.5ms, 68 PlacesBefore, 27 PlacesAfterwards, 59 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 46 TotalNumberOfCompositions, 1775 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1005, positive: 924, positive conditional: 0, positive unconditional: 924, negative: 81, negative conditional: 0, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 631, positive: 584, positive conditional: 0, positive unconditional: 584, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 631, positive: 570, positive conditional: 0, positive unconditional: 570, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 61, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 273, positive: 75, positive conditional: 0, positive unconditional: 75, negative: 197, negative conditional: 0, negative unconditional: 197, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1005, positive: 340, positive conditional: 0, positive unconditional: 340, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 631, unknown conditional: 0, unknown unconditional: 631] , Statistics on independence cache: Total cache size (in pairs): 83, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - 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 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3938.5ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 527.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2606.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 58 SDtfs, 45 SDslu, 35 SDs, 0 SdLazy, 138 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 123.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 153.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=5, InterpolantAutomatonStates: 48, 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: 17.9ms SsaConstructionTime, 137.9ms SatisfiabilityAnalysisTime, 468.2ms InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 499 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...