/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/safe021_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:55:01,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:55:01,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:55:01,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-24 19:55:01,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:55:01,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:55:01,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:55:01,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:55:01,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:55:01,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:55:01,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:55:01,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:55:01,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:55:01,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:55:01,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:55:01,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:55:01,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:55:01,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:55:01,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:55:01,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:55:01,214 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 [2021-03-24 19:55:01,248 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:55:01,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:55:01,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:55:01,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:55:01,251 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:55:01,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:55:01,252 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:55:01,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:55:01,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:55:01,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:55:01,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:55:01,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:55:01,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:55:01,253 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:55:01,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:55:01,254 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:55:01,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:55:01,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:55:01,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:55:01,254 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:55:01,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:55:01,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:55:01,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:55:01,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:55:01,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:55:01,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:55:01,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:55:01,256 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:55:01,256 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:55:01,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:55:01,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:55:01,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:55:01,594 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:55:01,595 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:55:01,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2021-03-24 19:55:01,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72ba11c87/daae2fe325cc4f8a8fb7ef0281518f59/FLAG23c14e568 [2021-03-24 19:55:02,077 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:55:02,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2021-03-24 19:55:02,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72ba11c87/daae2fe325cc4f8a8fb7ef0281518f59/FLAG23c14e568 [2021-03-24 19:55:02,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72ba11c87/daae2fe325cc4f8a8fb7ef0281518f59 [2021-03-24 19:55:02,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:55:02,397 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:55:02,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:55:02,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:55:02,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:55:02,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:55:02" (1/1) ... [2021-03-24 19:55:02,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df78344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:55:02, skipping insertion in model container [2021-03-24 19:55:02,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:55:02" (1/1) ... [2021-03-24 19:55:02,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:55:02,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:55:02,571 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/safe021_tso.opt.i[949,962] [2021-03-24 19:55:02,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:55:02,719 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:55:02,730 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/safe021_tso.opt.i[949,962] [2021-03-24 19:55:02,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:55:02,821 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:55:02,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:55:02 WrapperNode [2021-03-24 19:55:02,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:55:02,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:55:02,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:55:02,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:55:02,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:55:02" (1/1) ... [2021-03-24 19:55:02,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:55:02" (1/1) ... [2021-03-24 19:55:02,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:55:02,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:55:02,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:55:02,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:55:02,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:55:02" (1/1) ... [2021-03-24 19:55:02,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:55:02" (1/1) ... [2021-03-24 19:55:02,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:55:02" (1/1) ... [2021-03-24 19:55:02,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:55:02" (1/1) ... [2021-03-24 19:55:02,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:55:02" (1/1) ... [2021-03-24 19:55:02,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:55:02" (1/1) ... [2021-03-24 19:55:02,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:55:02" (1/1) ... [2021-03-24 19:55:02,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:55:02,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:55:02,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:55:02,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:55:02,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:55:02" (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 [2021-03-24 19:55:02,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:55:02,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:55:02,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:55:02,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:55:02,933 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:55:02,933 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:55:02,933 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:55:02,933 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:55:02,934 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:55:02,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:55:02,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:55:02,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:55:02,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:55:02,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:55:02,936 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:55:03,258 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:55:03,258 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 19:55:03,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:55:03 BoogieIcfgContainer [2021-03-24 19:55:03,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:55:03,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:55:03,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:55:03,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:55:03,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:55:02" (1/3) ... [2021-03-24 19:55:03,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b8aadc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:55:03, skipping insertion in model container [2021-03-24 19:55:03,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:55:02" (2/3) ... [2021-03-24 19:55:03,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b8aadc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:55:03, skipping insertion in model container [2021-03-24 19:55:03,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:55:03" (3/3) ... [2021-03-24 19:55:03,266 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2021-03-24 19:55:03,271 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:55:03,275 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 19:55:03,276 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:55:03,299 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,299 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,299 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,299 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,300 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,300 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,300 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,300 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,300 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,301 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,301 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,301 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,301 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,301 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,301 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,302 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,302 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,302 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,302 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,302 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,303 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,303 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,303 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,303 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,303 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,304 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,304 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,304 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,304 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,304 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,304 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,304 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,305 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,305 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,305 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,305 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,307 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,307 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,307 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,308 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,312 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,312 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,312 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,312 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,314 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,314 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,314 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,314 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:55:03,316 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:55:03,331 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 19:55:03,362 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:55:03,363 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:55:03,363 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:55:03,363 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:55:03,363 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:55:03,363 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:55:03,363 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:55:03,363 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:55:03,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 19:55:03,430 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-24 19:55:03,430 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:55:03,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-24 19:55:03,436 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 19:55:03,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-24 19:55:03,458 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:55:03,477 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 19:55:03,480 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 19:55:03,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-24 19:55:03,503 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-24 19:55:03,503 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:55:03,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 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. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-24 19:55:03,506 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 19:55:04,913 INFO L154 LiptonReduction]: Checked pairs total: 1328 [2021-03-24 19:55:04,913 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-24 19:55:04,915 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1458 [2021-03-24 19:55:04,923 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-24 19:55:04,924 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:55:04,924 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:55:04,924 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:55:04,925 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:55:04,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:55:04,928 INFO L82 PathProgramCache]: Analyzing trace with hash 775848287, now seen corresponding path program 1 times [2021-03-24 19:55:04,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:55:04,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334853116] [2021-03-24 19:55:04,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:55:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:55:05,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:05,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:55:05,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:05,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:55:05,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:05,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:55:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:55:05,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334853116] [2021-03-24 19:55:05,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:55:05,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:55:05,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691260268] [2021-03-24 19:55:05,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:55:05,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:55:05,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:55:05,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:55:05,156 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 116 [2021-03-24 19:55:05,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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) [2021-03-24 19:55:05,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:55:05,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 116 [2021-03-24 19:55:05,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:55:05,199 INFO L129 PetriNetUnfolder]: 6/44 cut-off events. [2021-03-24 19:55:05,199 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:55:05,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 44 events. 6/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 107 event pairs, 2 based on Foata normal form. 4/46 useless extension candidates. Maximal degree in co-relation 62. Up to 15 conditions per place. [2021-03-24 19:55:05,201 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 4 selfloop transitions, 3 changer transitions 5/28 dead transitions. [2021-03-24 19:55:05,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 89 flow [2021-03-24 19:55:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:55:05,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:55:05,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 494 transitions. [2021-03-24 19:55:05,219 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8517241379310345 [2021-03-24 19:55:05,219 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 494 transitions. [2021-03-24 19:55:05,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 494 transitions. [2021-03-24 19:55:05,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:55:05,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 494 transitions. [2021-03-24 19:55:05,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 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) [2021-03-24 19:55:05,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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) [2021-03-24 19:55:05,234 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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) [2021-03-24 19:55:05,235 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 5 states and 494 transitions. [2021-03-24 19:55:05,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 89 flow [2021-03-24 19:55:05,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 28 transitions, 86 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:55:05,242 INFO L241 Difference]: Finished difference. Result has 35 places, 23 transitions, 75 flow [2021-03-24 19:55:05,244 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2021-03-24 19:55:05,245 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2021-03-24 19:55:05,245 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 75 flow [2021-03-24 19:55:05,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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) [2021-03-24 19:55:05,245 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:55:05,245 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:55:05,246 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:55:05,246 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:55:05,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:55:05,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1718530325, now seen corresponding path program 1 times [2021-03-24 19:55:05,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:55:05,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407245314] [2021-03-24 19:55:05,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:55:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:55:05,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:05,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:55:05,312 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:55:05,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:55:05,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:05,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:55:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:55:05,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407245314] [2021-03-24 19:55:05,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:55:05,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:55:05,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034646611] [2021-03-24 19:55:05,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:55:05,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:55:05,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:55:05,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:55:05,327 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 116 [2021-03-24 19:55:05,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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) [2021-03-24 19:55:05,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:55:05,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 116 [2021-03-24 19:55:05,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:55:05,390 INFO L129 PetriNetUnfolder]: 33/108 cut-off events. [2021-03-24 19:55:05,391 INFO L130 PetriNetUnfolder]: For 91/102 co-relation queries the response was YES. [2021-03-24 19:55:05,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 108 events. 33/108 cut-off events. For 91/102 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 413 event pairs, 6 based on Foata normal form. 13/117 useless extension candidates. Maximal degree in co-relation 273. Up to 44 conditions per place. [2021-03-24 19:55:05,392 INFO L132 encePairwiseOnDemand]: 109/116 looper letters, 11 selfloop transitions, 6 changer transitions 10/40 dead transitions. [2021-03-24 19:55:05,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 209 flow [2021-03-24 19:55:05,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:55:05,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:55:05,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 642 transitions. [2021-03-24 19:55:05,394 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7906403940886699 [2021-03-24 19:55:05,394 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 642 transitions. [2021-03-24 19:55:05,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 642 transitions. [2021-03-24 19:55:05,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:55:05,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 642 transitions. [2021-03-24 19:55:05,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.71428571428571) internal successors, (642), 7 states have internal predecessors, (642), 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) [2021-03-24 19:55:05,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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) [2021-03-24 19:55:05,399 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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) [2021-03-24 19:55:05,399 INFO L185 Difference]: Start difference. First operand has 35 places, 23 transitions, 75 flow. Second operand 7 states and 642 transitions. [2021-03-24 19:55:05,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 209 flow [2021-03-24 19:55:05,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 200 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-24 19:55:05,402 INFO L241 Difference]: Finished difference. Result has 43 places, 27 transitions, 136 flow [2021-03-24 19:55:05,402 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=43, PETRI_TRANSITIONS=27} [2021-03-24 19:55:05,402 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2021-03-24 19:55:05,402 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 27 transitions, 136 flow [2021-03-24 19:55:05,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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) [2021-03-24 19:55:05,403 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:55:05,403 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:55:05,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:55:05,403 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:55:05,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:55:05,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1755955685, now seen corresponding path program 1 times [2021-03-24 19:55:05,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:55:05,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278023103] [2021-03-24 19:55:05,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:55:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:55:05,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:05,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:55:05,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:05,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:55:05,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:05,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:55:05,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:05,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:55:05,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:55:05,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278023103] [2021-03-24 19:55:05,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:55:05,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:55:05,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612106330] [2021-03-24 19:55:05,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:55:05,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:55:05,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:55:05,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:55:05,478 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 116 [2021-03-24 19:55:05,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 27 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2021-03-24 19:55:05,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:55:05,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 116 [2021-03-24 19:55:05,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:55:05,524 INFO L129 PetriNetUnfolder]: 27/114 cut-off events. [2021-03-24 19:55:05,525 INFO L130 PetriNetUnfolder]: For 345/351 co-relation queries the response was YES. [2021-03-24 19:55:05,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 114 events. 27/114 cut-off events. For 345/351 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 540 event pairs, 14 based on Foata normal form. 15/125 useless extension candidates. Maximal degree in co-relation 350. Up to 43 conditions per place. [2021-03-24 19:55:05,526 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 2 selfloop transitions, 4 changer transitions 6/31 dead transitions. [2021-03-24 19:55:05,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 31 transitions, 180 flow [2021-03-24 19:55:05,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 19:55:05,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 19:55:05,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 564 transitions. [2021-03-24 19:55:05,528 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8103448275862069 [2021-03-24 19:55:05,528 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 564 transitions. [2021-03-24 19:55:05,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 564 transitions. [2021-03-24 19:55:05,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:55:05,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 564 transitions. [2021-03-24 19:55:05,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 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) [2021-03-24 19:55:05,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2021-03-24 19:55:05,535 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2021-03-24 19:55:05,535 INFO L185 Difference]: Start difference. First operand has 43 places, 27 transitions, 136 flow. Second operand 6 states and 564 transitions. [2021-03-24 19:55:05,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 31 transitions, 180 flow [2021-03-24 19:55:05,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 31 transitions, 165 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-24 19:55:05,539 INFO L241 Difference]: Finished difference. Result has 46 places, 25 transitions, 130 flow [2021-03-24 19:55:05,539 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=46, PETRI_TRANSITIONS=25} [2021-03-24 19:55:05,539 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2021-03-24 19:55:05,539 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 25 transitions, 130 flow [2021-03-24 19:55:05,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2021-03-24 19:55:05,540 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:55:05,540 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:55:05,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:55:05,540 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:55:05,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:55:05,541 INFO L82 PathProgramCache]: Analyzing trace with hash 2053126477, now seen corresponding path program 1 times [2021-03-24 19:55:05,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:55:05,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468972805] [2021-03-24 19:55:05,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:55:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:55:05,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:05,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:55:05,633 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:55:05,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:55:05,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:05,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:55:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:55:05,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468972805] [2021-03-24 19:55:05,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:55:05,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:55:05,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090455007] [2021-03-24 19:55:05,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:55:05,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:55:05,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:55:05,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:55:05,643 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 116 [2021-03-24 19:55:05,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 25 transitions, 130 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) [2021-03-24 19:55:05,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:55:05,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 116 [2021-03-24 19:55:05,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:55:05,702 INFO L129 PetriNetUnfolder]: 70/176 cut-off events. [2021-03-24 19:55:05,702 INFO L130 PetriNetUnfolder]: For 685/732 co-relation queries the response was YES. [2021-03-24 19:55:05,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 176 events. 70/176 cut-off events. For 685/732 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 854 event pairs, 34 based on Foata normal form. 21/185 useless extension candidates. Maximal degree in co-relation 505. Up to 96 conditions per place. [2021-03-24 19:55:05,707 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 7 selfloop transitions, 7 changer transitions 2/35 dead transitions. [2021-03-24 19:55:05,707 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 35 transitions, 182 flow [2021-03-24 19:55:05,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:55:05,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:55:05,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2021-03-24 19:55:05,709 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7724137931034483 [2021-03-24 19:55:05,709 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2021-03-24 19:55:05,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2021-03-24 19:55:05,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:55:05,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2021-03-24 19:55:05,712 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) [2021-03-24 19:55:05,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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) [2021-03-24 19:55:05,714 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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) [2021-03-24 19:55:05,714 INFO L185 Difference]: Start difference. First operand has 46 places, 25 transitions, 130 flow. Second operand 5 states and 448 transitions. [2021-03-24 19:55:05,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 35 transitions, 182 flow [2021-03-24 19:55:05,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 35 transitions, 158 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-24 19:55:05,719 INFO L241 Difference]: Finished difference. Result has 45 places, 31 transitions, 160 flow [2021-03-24 19:55:05,720 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2021-03-24 19:55:05,720 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2021-03-24 19:55:05,720 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 160 flow [2021-03-24 19:55:05,720 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) [2021-03-24 19:55:05,720 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:55:05,721 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:55:05,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:55:05,723 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:55:05,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:55:05,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1804323783, now seen corresponding path program 1 times [2021-03-24 19:55:05,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:55:05,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215906643] [2021-03-24 19:55:05,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:55:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:55:05,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:05,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:55:05,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:05,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:55:05,826 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:55:05,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:55:05,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:05,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:55:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:55:05,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215906643] [2021-03-24 19:55:05,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:55:05,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:55:05,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717941732] [2021-03-24 19:55:05,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:55:05,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:55:05,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:55:05,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:55:05,840 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 116 [2021-03-24 19:55:05,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 160 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) [2021-03-24 19:55:05,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:55:05,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 116 [2021-03-24 19:55:05,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:55:05,916 INFO L129 PetriNetUnfolder]: 43/135 cut-off events. [2021-03-24 19:55:05,916 INFO L130 PetriNetUnfolder]: For 507/764 co-relation queries the response was YES. [2021-03-24 19:55:05,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 135 events. 43/135 cut-off events. For 507/764 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 626 event pairs, 6 based on Foata normal form. 61/187 useless extension candidates. Maximal degree in co-relation 491. Up to 91 conditions per place. [2021-03-24 19:55:05,918 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 5 selfloop transitions, 13 changer transitions 4/41 dead transitions. [2021-03-24 19:55:05,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 262 flow [2021-03-24 19:55:05,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:55:05,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:55:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 626 transitions. [2021-03-24 19:55:05,920 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.770935960591133 [2021-03-24 19:55:05,920 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 626 transitions. [2021-03-24 19:55:05,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 626 transitions. [2021-03-24 19:55:05,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:55:05,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 626 transitions. [2021-03-24 19:55:05,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.42857142857143) internal successors, (626), 7 states have internal predecessors, (626), 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) [2021-03-24 19:55:05,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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) [2021-03-24 19:55:05,924 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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) [2021-03-24 19:55:05,925 INFO L185 Difference]: Start difference. First operand has 45 places, 31 transitions, 160 flow. Second operand 7 states and 626 transitions. [2021-03-24 19:55:05,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 262 flow [2021-03-24 19:55:05,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 41 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:55:05,928 INFO L241 Difference]: Finished difference. Result has 53 places, 37 transitions, 244 flow [2021-03-24 19:55:05,928 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=244, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2021-03-24 19:55:05,929 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2021-03-24 19:55:05,929 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 244 flow [2021-03-24 19:55:05,929 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) [2021-03-24 19:55:05,929 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:55:05,929 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:55:05,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:55:05,930 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:55:05,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:55:05,931 INFO L82 PathProgramCache]: Analyzing trace with hash 437192475, now seen corresponding path program 1 times [2021-03-24 19:55:05,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:55:05,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119737199] [2021-03-24 19:55:05,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:55:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:55:05,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:06,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:55:06,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:06,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:55:06,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:06,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:55:06,014 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:55:06,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:55:06,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:06,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:55:06,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:55:06,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119737199] [2021-03-24 19:55:06,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:55:06,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:55:06,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941129870] [2021-03-24 19:55:06,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:55:06,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:55:06,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:55:06,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:55:06,023 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 116 [2021-03-24 19:55:06,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 244 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) [2021-03-24 19:55:06,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:55:06,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 116 [2021-03-24 19:55:06,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:55:06,100 INFO L129 PetriNetUnfolder]: 23/100 cut-off events. [2021-03-24 19:55:06,100 INFO L130 PetriNetUnfolder]: For 700/1073 co-relation queries the response was YES. [2021-03-24 19:55:06,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 100 events. 23/100 cut-off events. For 700/1073 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 447 event pairs, 0 based on Foata normal form. 78/174 useless extension candidates. Maximal degree in co-relation 457. Up to 71 conditions per place. [2021-03-24 19:55:06,101 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 2 selfloop transitions, 17 changer transitions 3/41 dead transitions. [2021-03-24 19:55:06,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 41 transitions, 320 flow [2021-03-24 19:55:06,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:55:06,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:55:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 798 transitions. [2021-03-24 19:55:06,104 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2021-03-24 19:55:06,105 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 798 transitions. [2021-03-24 19:55:06,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 798 transitions. [2021-03-24 19:55:06,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:55:06,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 798 transitions. [2021-03-24 19:55:06,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.66666666666667) internal successors, (798), 9 states have internal predecessors, (798), 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) [2021-03-24 19:55:06,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 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) [2021-03-24 19:55:06,109 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 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) [2021-03-24 19:55:06,109 INFO L185 Difference]: Start difference. First operand has 53 places, 37 transitions, 244 flow. Second operand 9 states and 798 transitions. [2021-03-24 19:55:06,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 41 transitions, 320 flow [2021-03-24 19:55:06,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 41 transitions, 280 flow, removed 16 selfloop flow, removed 4 redundant places. [2021-03-24 19:55:06,113 INFO L241 Difference]: Finished difference. Result has 60 places, 38 transitions, 260 flow [2021-03-24 19:55:06,114 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=260, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2021-03-24 19:55:06,114 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2021-03-24 19:55:06,114 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 260 flow [2021-03-24 19:55:06,114 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) [2021-03-24 19:55:06,114 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:55:06,115 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:55:06,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:55:06,115 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:55:06,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:55:06,115 INFO L82 PathProgramCache]: Analyzing trace with hash -703704088, now seen corresponding path program 1 times [2021-03-24 19:55:06,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:55:06,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228012907] [2021-03-24 19:55:06,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:55:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:55:06,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:06,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:55:06,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:06,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:55:06,196 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 19:55:06,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:55:06,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:55:06,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:55:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:55:06,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228012907] [2021-03-24 19:55:06,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:55:06,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:55:06,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456919156] [2021-03-24 19:55:06,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:55:06,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:55:06,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:55:06,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:55:06,210 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 19:55:06,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 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) [2021-03-24 19:55:06,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:55:06,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 19:55:06,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:55:06,263 INFO L129 PetriNetUnfolder]: 26/117 cut-off events. [2021-03-24 19:55:06,263 INFO L130 PetriNetUnfolder]: For 592/649 co-relation queries the response was YES. [2021-03-24 19:55:06,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 117 events. 26/117 cut-off events. For 592/649 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 578 event pairs, 0 based on Foata normal form. 13/124 useless extension candidates. Maximal degree in co-relation 463. Up to 42 conditions per place. [2021-03-24 19:55:06,264 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2021-03-24 19:55:06,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 43 transitions, 326 flow [2021-03-24 19:55:06,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 19:55:06,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 19:55:06,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 515 transitions. [2021-03-24 19:55:06,266 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7399425287356322 [2021-03-24 19:55:06,266 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 515 transitions. [2021-03-24 19:55:06,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 515 transitions. [2021-03-24 19:55:06,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:55:06,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 515 transitions. [2021-03-24 19:55:06,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 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) [2021-03-24 19:55:06,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2021-03-24 19:55:06,270 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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) [2021-03-24 19:55:06,270 INFO L185 Difference]: Start difference. First operand has 60 places, 38 transitions, 260 flow. Second operand 6 states and 515 transitions. [2021-03-24 19:55:06,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 43 transitions, 326 flow [2021-03-24 19:55:06,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 43 transitions, 268 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-03-24 19:55:06,274 INFO L241 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2021-03-24 19:55:06,274 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2021-03-24 19:55:06,274 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2021-03-24 19:55:06,274 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2021-03-24 19:55:06,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 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) [2021-03-24 19:55:06,274 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:55:06,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:55:06 BasicIcfg [2021-03-24 19:55:06,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:55:06,279 INFO L168 Benchmark]: Toolchain (without parser) took 3882.22 ms. Allocated memory was 255.9 MB in the beginning and 425.7 MB in the end (delta: 169.9 MB). Free memory was 234.9 MB in the beginning and 329.3 MB in the end (delta: -94.4 MB). Peak memory consumption was 74.8 MB. Max. memory is 16.0 GB. [2021-03-24 19:55:06,280 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:55:06,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.41 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 234.4 MB in the beginning and 317.8 MB in the end (delta: -83.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 19:55:06,285 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.01 ms. Allocated memory is still 354.4 MB. Free memory was 317.8 MB in the beginning and 315.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:55:06,285 INFO L168 Benchmark]: Boogie Preprocessor took 20.33 ms. Allocated memory is still 354.4 MB. Free memory was 315.7 MB in the beginning and 314.7 MB in the end (delta: 963.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:55:06,285 INFO L168 Benchmark]: RCFGBuilder took 383.24 ms. Allocated memory is still 354.4 MB. Free memory was 314.7 MB in the beginning and 292.1 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:55:06,286 INFO L168 Benchmark]: TraceAbstraction took 3016.58 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 291.7 MB in the beginning and 329.3 MB in the end (delta: -37.6 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.0 GB. [2021-03-24 19:55:06,292 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 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 422.41 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 234.4 MB in the beginning and 317.8 MB in the end (delta: -83.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 33.01 ms. Allocated memory is still 354.4 MB. Free memory was 317.8 MB in the beginning and 315.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.33 ms. Allocated memory is still 354.4 MB. Free memory was 315.7 MB in the beginning and 314.7 MB in the end (delta: 963.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 383.24 ms. Allocated memory is still 354.4 MB. Free memory was 314.7 MB in the beginning and 292.1 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3016.58 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 291.7 MB in the beginning and 329.3 MB in the end (delta: -37.6 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1433.4ms, 69 PlacesBefore, 31 PlacesAfterwards, 60 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1328 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 871, positive: 824, positive conditional: 0, positive unconditional: 824, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 628, positive: 598, positive conditional: 0, positive unconditional: 598, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 628, positive: 598, positive conditional: 0, positive unconditional: 598, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 628, positive: 592, positive conditional: 0, positive unconditional: 592, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 36, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 123, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 102, negative conditional: 0, negative unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 871, positive: 226, positive conditional: 0, positive unconditional: 226, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 628, unknown conditional: 0, unknown unconditional: 628] , Statistics on independence cache: Total cache size (in pairs): 77, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2920.1ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 563.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1556.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 48 SDtfs, 40 SDslu, 59 SDs, 0 SdLazy, 136 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 119.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 159.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=260occurred in iteration=6, InterpolantAutomatonStates: 45, 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: 19.3ms SsaConstructionTime, 166.1ms SatisfiabilityAnalysisTime, 460.7ms InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 358 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...