/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-28 23:25:50,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-28 23:25:50,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-28 23:25:50,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-28 23:25:50,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-28 23:25:50,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-28 23:25:50,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-28 23:25:50,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-28 23:25:50,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-28 23:25:50,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-28 23:25:50,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-28 23:25:50,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-28 23:25:50,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-28 23:25:50,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-28 23:25:50,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-28 23:25:50,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-28 23:25:50,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-28 23:25:50,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-28 23:25:50,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-28 23:25:50,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-28 23:25:50,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-28 23:25:50,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-28 23:25:50,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-28 23:25:50,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-28 23:25:50,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-28 23:25:50,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-28 23:25:50,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-28 23:25:50,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-28 23:25:50,714 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-RepeatedSemanticLbeWithPredicates.epf [2021-04-28 23:25:50,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-28 23:25:50,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-28 23:25:50,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-28 23:25:50,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-28 23:25:50,777 INFO L138 SettingsManager]: * Use SBE=true [2021-04-28 23:25:50,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-28 23:25:50,777 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-28 23:25:50,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-28 23:25:50,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-28 23:25:50,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-28 23:25:50,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-28 23:25:50,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-28 23:25:50,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-28 23:25:50,780 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-28 23:25:50,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-28 23:25:50,781 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-28 23:25:50,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-28 23:25:50,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-28 23:25:50,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-28 23:25:50,781 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-28 23:25:50,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-28 23:25:50,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-28 23:25:50,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-28 23:25:50,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-28 23:25:50,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-28 23:25:50,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-28 23:25:50,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-28 23:25:50,784 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-28 23:25:50,784 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-28 23:25:50,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-28 23:25:50,784 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-28 23:25:51,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-28 23:25:51,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-28 23:25:51,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-28 23:25:51,217 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-28 23:25:51,220 INFO L275 PluginConnector]: CDTParser initialized [2021-04-28 23:25:51,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2021-04-28 23:25:51,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e45071f97/b7c9cdead36745de9ed39b28595b0225/FLAG394bfb0f9 [2021-04-28 23:25:52,144 INFO L306 CDTParser]: Found 1 translation units. [2021-04-28 23:25:52,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2021-04-28 23:25:52,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e45071f97/b7c9cdead36745de9ed39b28595b0225/FLAG394bfb0f9 [2021-04-28 23:25:52,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e45071f97/b7c9cdead36745de9ed39b28595b0225 [2021-04-28 23:25:52,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-28 23:25:52,409 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-28 23:25:52,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-28 23:25:52,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-28 23:25:52,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-28 23:25:52,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:25:52" (1/1) ... [2021-04-28 23:25:52,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@339c366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:25:52, skipping insertion in model container [2021-04-28 23:25:52,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:25:52" (1/1) ... [2021-04-28 23:25:52,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-28 23:25:52,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-28 23:25:52,680 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/safe002_tso.oepc.i[950,963] [2021-04-28 23:25:52,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 23:25:52,947 INFO L203 MainTranslator]: Completed pre-run [2021-04-28 23:25:52,962 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/safe002_tso.oepc.i[950,963] [2021-04-28 23:25:53,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-28 23:25:53,140 INFO L208 MainTranslator]: Completed translation [2021-04-28 23:25:53,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:25:53 WrapperNode [2021-04-28 23:25:53,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-28 23:25:53,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-28 23:25:53,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-28 23:25:53,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-28 23:25:53,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:25:53" (1/1) ... [2021-04-28 23:25:53,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:25:53" (1/1) ... [2021-04-28 23:25:53,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-28 23:25:53,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-28 23:25:53,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-28 23:25:53,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-28 23:25:53,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:25:53" (1/1) ... [2021-04-28 23:25:53,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:25:53" (1/1) ... [2021-04-28 23:25:53,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:25:53" (1/1) ... [2021-04-28 23:25:53,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:25:53" (1/1) ... [2021-04-28 23:25:53,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:25:53" (1/1) ... [2021-04-28 23:25:53,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:25:53" (1/1) ... [2021-04-28 23:25:53,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:25:53" (1/1) ... [2021-04-28 23:25:53,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-28 23:25:53,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-28 23:25:53,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-28 23:25:53,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-28 23:25:53,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:25:53" (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 [2021-04-28 23:25:53,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-28 23:25:53,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-28 23:25:53,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-28 23:25:53,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-28 23:25:53,336 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-28 23:25:53,336 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-28 23:25:53,336 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-28 23:25:53,336 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-28 23:25:53,337 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-28 23:25:53,337 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-28 23:25:53,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-28 23:25:53,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-28 23:25:53,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-28 23:25:53,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-28 23:25:53,339 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-28 23:25:53,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-28 23:25:53,785 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-28 23:25:53,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:25:53 BoogieIcfgContainer [2021-04-28 23:25:53,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-28 23:25:53,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-28 23:25:53,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-28 23:25:53,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-28 23:25:53,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 11:25:52" (1/3) ... [2021-04-28 23:25:53,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0c20fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:25:53, skipping insertion in model container [2021-04-28 23:25:53,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:25:53" (2/3) ... [2021-04-28 23:25:53,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0c20fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:25:53, skipping insertion in model container [2021-04-28 23:25:53,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:25:53" (3/3) ... [2021-04-28 23:25:53,799 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2021-04-28 23:25:53,808 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-28 23:25:53,814 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-28 23:25:53,816 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-28 23:25:53,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,851 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,851 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,852 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,852 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,852 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,852 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,854 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,854 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,854 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,855 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,855 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,856 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,856 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,856 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,858 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,858 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,858 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,859 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,859 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,859 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,859 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,860 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,860 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,860 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,861 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,861 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,864 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,864 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,864 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,865 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,870 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,870 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,870 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,871 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,873 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,873 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,873 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,874 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-28 23:25:53,875 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-28 23:25:53,905 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-28 23:25:53,937 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-28 23:25:53,937 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-28 23:25:53,937 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-28 23:25:53,937 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-28 23:25:53,937 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-28 23:25:53,938 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-28 23:25:53,938 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-28 23:25:53,938 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-28 23:25:53,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-04-28 23:25:54,005 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-04-28 23:25:54,005 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:25:54,011 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. [2021-04-28 23:25:54,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-04-28 23:25:54,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-04-28 23:25:54,020 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:25:54,045 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-04-28 23:25:54,050 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-04-28 23:25:54,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-04-28 23:25:54,074 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-04-28 23:25:54,074 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:25:54,075 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. [2021-04-28 23:25:54,079 INFO L146 LiptonReduction]: Number of co-enabled transitions 864 [2021-04-28 23:25:57,806 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 23:25:57,973 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-28 23:25:58,136 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:25:58,309 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-28 23:25:58,476 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:25:58,626 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-28 23:25:59,962 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-04-28 23:26:00,207 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-04-28 23:26:00,464 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-04-28 23:26:00,713 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-04-28 23:26:01,337 INFO L158 LiptonReduction]: Checked pairs total: 5648 [2021-04-28 23:26:01,338 INFO L160 LiptonReduction]: Total number of compositions: 84 [2021-04-28 23:26:01,342 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7324 [2021-04-28 23:26:01,367 INFO L129 PetriNetUnfolder]: 0/61 cut-off events. [2021-04-28 23:26:01,367 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:26:01,368 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:01,368 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:01,369 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:01,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:01,376 INFO L82 PathProgramCache]: Analyzing trace with hash 351986949, now seen corresponding path program 1 times [2021-04-28 23:26:01,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:01,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877114742] [2021-04-28 23:26:01,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:01,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:01,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:01,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:01,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877114742] [2021-04-28 23:26:01,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:01,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-28 23:26:01,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734363050] [2021-04-28 23:26:01,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-28 23:26:01,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:01,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-28 23:26:01,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-28 23:26:01,764 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 159 [2021-04-28 23:26:01,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 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) [2021-04-28 23:26:01,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:01,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 159 [2021-04-28 23:26:01,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:01,859 INFO L129 PetriNetUnfolder]: 4/73 cut-off events. [2021-04-28 23:26:01,860 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:26:01,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 73 events. 4/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 337 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 71. Up to 15 conditions per place. [2021-04-28 23:26:01,862 INFO L132 encePairwiseOnDemand]: 145/159 looper letters, 1 selfloop transitions, 2 changer transitions 44/69 dead transitions. [2021-04-28 23:26:01,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 69 transitions, 191 flow [2021-04-28 23:26:01,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-28 23:26:01,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-28 23:26:01,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2021-04-28 23:26:01,883 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8176100628930818 [2021-04-28 23:26:01,884 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2021-04-28 23:26:01,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2021-04-28 23:26:01,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:01,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2021-04-28 23:26:01,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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) [2021-04-28 23:26:01,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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) [2021-04-28 23:26:01,905 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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) [2021-04-28 23:26:01,908 INFO L185 Difference]: Start difference. First operand has 75 places, 65 transitions, 139 flow. Second operand 3 states and 390 transitions. [2021-04-28 23:26:01,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 69 transitions, 191 flow [2021-04-28 23:26:01,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 69 transitions, 188 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-04-28 23:26:01,916 INFO L241 Difference]: Finished difference. Result has 75 places, 25 transitions, 64 flow [2021-04-28 23:26:01,919 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=75, PETRI_TRANSITIONS=25} [2021-04-28 23:26:01,920 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2021-04-28 23:26:01,920 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:01,920 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 25 transitions, 64 flow [2021-04-28 23:26:01,921 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 25 transitions, 64 flow [2021-04-28 23:26:01,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 25 transitions, 64 flow [2021-04-28 23:26:01,926 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-04-28 23:26:01,927 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:26:01,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 25 events. 0/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 51 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-28 23:26:01,928 INFO L146 LiptonReduction]: Number of co-enabled transitions 322 [2021-04-28 23:26:02,079 INFO L158 LiptonReduction]: Checked pairs total: 349 [2021-04-28 23:26:02,080 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:02,080 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 160 [2021-04-28 23:26:02,082 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 64 flow [2021-04-28 23:26:02,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 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) [2021-04-28 23:26:02,083 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:02,083 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:02,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-28 23:26:02,083 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:02,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:02,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1973307743, now seen corresponding path program 1 times [2021-04-28 23:26:02,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:02,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588494372] [2021-04-28 23:26:02,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:02,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:02,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:02,160 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:26:02,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:26:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:02,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588494372] [2021-04-28 23:26:02,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:02,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:26:02,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136084129] [2021-04-28 23:26:02,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:26:02,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:02,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:26:02,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:26:02,177 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 159 [2021-04-28 23:26:02,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 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) [2021-04-28 23:26:02,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:02,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 159 [2021-04-28 23:26:02,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:02,220 INFO L129 PetriNetUnfolder]: 31/131 cut-off events. [2021-04-28 23:26:02,220 INFO L130 PetriNetUnfolder]: For 23/30 co-relation queries the response was YES. [2021-04-28 23:26:02,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 131 events. 31/131 cut-off events. For 23/30 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 638 event pairs, 2 based on Foata normal form. 8/97 useless extension candidates. Maximal degree in co-relation 222. Up to 43 conditions per place. [2021-04-28 23:26:02,223 INFO L132 encePairwiseOnDemand]: 152/159 looper letters, 8 selfloop transitions, 6 changer transitions 0/32 dead transitions. [2021-04-28 23:26:02,223 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 112 flow [2021-04-28 23:26:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:26:02,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:26:02,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2021-04-28 23:26:02,227 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6981132075471698 [2021-04-28 23:26:02,227 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 444 transitions. [2021-04-28 23:26:02,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 444 transitions. [2021-04-28 23:26:02,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:02,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 444 transitions. [2021-04-28 23:26:02,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 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) [2021-04-28 23:26:02,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 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) [2021-04-28 23:26:02,234 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 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) [2021-04-28 23:26:02,234 INFO L185 Difference]: Start difference. First operand has 35 places, 25 transitions, 64 flow. Second operand 4 states and 444 transitions. [2021-04-28 23:26:02,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 112 flow [2021-04-28 23:26:02,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-28 23:26:02,236 INFO L241 Difference]: Finished difference. Result has 39 places, 29 transitions, 105 flow [2021-04-28 23:26:02,236 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2021-04-28 23:26:02,237 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -36 predicate places. [2021-04-28 23:26:02,237 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:02,237 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 29 transitions, 105 flow [2021-04-28 23:26:02,238 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 29 transitions, 105 flow [2021-04-28 23:26:02,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 29 transitions, 105 flow [2021-04-28 23:26:02,253 INFO L129 PetriNetUnfolder]: 27/121 cut-off events. [2021-04-28 23:26:02,253 INFO L130 PetriNetUnfolder]: For 30/31 co-relation queries the response was YES. [2021-04-28 23:26:02,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 121 events. 27/121 cut-off events. For 30/31 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 611 event pairs, 8 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 236. Up to 48 conditions per place. [2021-04-28 23:26:02,256 INFO L146 LiptonReduction]: Number of co-enabled transitions 364 [2021-04-28 23:26:02,263 INFO L158 LiptonReduction]: Checked pairs total: 57 [2021-04-28 23:26:02,263 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:02,263 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-04-28 23:26:02,265 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 105 flow [2021-04-28 23:26:02,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 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) [2021-04-28 23:26:02,266 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:02,266 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:02,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-28 23:26:02,266 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:02,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:02,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1043891870, now seen corresponding path program 1 times [2021-04-28 23:26:02,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:02,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996150093] [2021-04-28 23:26:02,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:02,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:02,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:02,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:02,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:02,332 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:26:02,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:26:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:02,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996150093] [2021-04-28 23:26:02,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:02,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:26:02,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682447368] [2021-04-28 23:26:02,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:26:02,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:02,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:26:02,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:26:02,347 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 159 [2021-04-28 23:26:02,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 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) [2021-04-28 23:26:02,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:02,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 159 [2021-04-28 23:26:02,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:02,404 INFO L129 PetriNetUnfolder]: 25/137 cut-off events. [2021-04-28 23:26:02,405 INFO L130 PetriNetUnfolder]: For 69/83 co-relation queries the response was YES. [2021-04-28 23:26:02,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 137 events. 25/137 cut-off events. For 69/83 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 793 event pairs, 0 based on Foata normal form. 10/98 useless extension candidates. Maximal degree in co-relation 306. Up to 45 conditions per place. [2021-04-28 23:26:02,407 INFO L132 encePairwiseOnDemand]: 152/159 looper letters, 8 selfloop transitions, 6 changer transitions 12/43 dead transitions. [2021-04-28 23:26:02,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 231 flow [2021-04-28 23:26:02,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:26:02,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:26:02,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2021-04-28 23:26:02,411 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6981132075471698 [2021-04-28 23:26:02,411 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2021-04-28 23:26:02,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2021-04-28 23:26:02,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:02,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2021-04-28 23:26:02,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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) [2021-04-28 23:26:02,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 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) [2021-04-28 23:26:02,420 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 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) [2021-04-28 23:26:02,420 INFO L185 Difference]: Start difference. First operand has 39 places, 29 transitions, 105 flow. Second operand 5 states and 555 transitions. [2021-04-28 23:26:02,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 231 flow [2021-04-28 23:26:02,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 23:26:02,426 INFO L241 Difference]: Finished difference. Result has 44 places, 27 transitions, 117 flow [2021-04-28 23:26:02,426 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2021-04-28 23:26:02,427 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -31 predicate places. [2021-04-28 23:26:02,427 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:02,428 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 27 transitions, 117 flow [2021-04-28 23:26:02,428 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 27 transitions, 117 flow [2021-04-28 23:26:02,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 27 transitions, 117 flow [2021-04-28 23:26:02,440 INFO L129 PetriNetUnfolder]: 9/51 cut-off events. [2021-04-28 23:26:02,440 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2021-04-28 23:26:02,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 51 events. 9/51 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 162 event pairs, 5 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 121. Up to 21 conditions per place. [2021-04-28 23:26:02,446 INFO L146 LiptonReduction]: Number of co-enabled transitions 282 [2021-04-28 23:26:02,456 INFO L158 LiptonReduction]: Checked pairs total: 37 [2021-04-28 23:26:02,456 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:02,456 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-04-28 23:26:02,463 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 27 transitions, 117 flow [2021-04-28 23:26:02,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 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) [2021-04-28 23:26:02,464 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:02,465 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:02,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-28 23:26:02,465 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:02,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:02,467 INFO L82 PathProgramCache]: Analyzing trace with hash -411695581, now seen corresponding path program 1 times [2021-04-28 23:26:02,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:02,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128079616] [2021-04-28 23:26:02,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:02,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:02,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 23:26:02,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:02,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:02,557 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:26:02,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:26:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:02,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128079616] [2021-04-28 23:26:02,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:02,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:26:02,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196909603] [2021-04-28 23:26:02,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:26:02,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:02,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:26:02,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:26:02,571 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 159 [2021-04-28 23:26:02,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 27 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 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) [2021-04-28 23:26:02,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:02,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 159 [2021-04-28 23:26:02,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:02,597 INFO L129 PetriNetUnfolder]: 8/56 cut-off events. [2021-04-28 23:26:02,598 INFO L130 PetriNetUnfolder]: For 66/71 co-relation queries the response was YES. [2021-04-28 23:26:02,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 56 events. 8/56 cut-off events. For 66/71 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 203 event pairs, 2 based on Foata normal form. 4/43 useless extension candidates. Maximal degree in co-relation 143. Up to 18 conditions per place. [2021-04-28 23:26:02,599 INFO L132 encePairwiseOnDemand]: 154/159 looper letters, 8 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2021-04-28 23:26:02,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 31 transitions, 167 flow [2021-04-28 23:26:02,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:26:02,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:26:02,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 440 transitions. [2021-04-28 23:26:02,602 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6918238993710691 [2021-04-28 23:26:02,602 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 440 transitions. [2021-04-28 23:26:02,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 440 transitions. [2021-04-28 23:26:02,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:02,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 440 transitions. [2021-04-28 23:26:02,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2021-04-28 23:26:02,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 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) [2021-04-28 23:26:02,607 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 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) [2021-04-28 23:26:02,607 INFO L185 Difference]: Start difference. First operand has 43 places, 27 transitions, 117 flow. Second operand 4 states and 440 transitions. [2021-04-28 23:26:02,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 31 transitions, 167 flow [2021-04-28 23:26:02,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 31 transitions, 137 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-04-28 23:26:02,610 INFO L241 Difference]: Finished difference. Result has 42 places, 29 transitions, 123 flow [2021-04-28 23:26:02,611 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=91, 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=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2021-04-28 23:26:02,611 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -33 predicate places. [2021-04-28 23:26:02,611 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:02,611 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 29 transitions, 123 flow [2021-04-28 23:26:02,612 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 29 transitions, 123 flow [2021-04-28 23:26:02,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 29 transitions, 123 flow [2021-04-28 23:26:02,619 INFO L129 PetriNetUnfolder]: 7/51 cut-off events. [2021-04-28 23:26:02,619 INFO L130 PetriNetUnfolder]: For 26/28 co-relation queries the response was YES. [2021-04-28 23:26:02,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 51 events. 7/51 cut-off events. For 26/28 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 168 event pairs, 2 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 108. Up to 17 conditions per place. [2021-04-28 23:26:02,620 INFO L146 LiptonReduction]: Number of co-enabled transitions 296 [2021-04-28 23:26:02,623 INFO L158 LiptonReduction]: Checked pairs total: 39 [2021-04-28 23:26:02,623 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:02,624 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-04-28 23:26:02,625 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 123 flow [2021-04-28 23:26:02,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 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) [2021-04-28 23:26:02,626 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:02,626 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:02,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-28 23:26:02,627 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:02,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:02,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1485101801, now seen corresponding path program 1 times [2021-04-28 23:26:02,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:02,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730750860] [2021-04-28 23:26:02,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:02,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:02,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:02,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:02,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:02,719 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:26:02,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:26:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:02,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730750860] [2021-04-28 23:26:02,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:02,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:26:02,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660243340] [2021-04-28 23:26:02,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:26:02,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:02,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:26:02,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:26:02,742 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 159 [2021-04-28 23:26:02,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 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) [2021-04-28 23:26:02,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:02,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 159 [2021-04-28 23:26:02,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:02,803 INFO L129 PetriNetUnfolder]: 9/73 cut-off events. [2021-04-28 23:26:02,803 INFO L130 PetriNetUnfolder]: For 56/64 co-relation queries the response was YES. [2021-04-28 23:26:02,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 73 events. 9/73 cut-off events. For 56/64 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 317 event pairs, 1 based on Foata normal form. 3/53 useless extension candidates. Maximal degree in co-relation 181. Up to 24 conditions per place. [2021-04-28 23:26:02,804 INFO L132 encePairwiseOnDemand]: 152/159 looper letters, 5 selfloop transitions, 7 changer transitions 7/35 dead transitions. [2021-04-28 23:26:02,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 35 transitions, 191 flow [2021-04-28 23:26:02,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:26:02,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:26:02,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 550 transitions. [2021-04-28 23:26:02,808 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6918238993710691 [2021-04-28 23:26:02,808 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 550 transitions. [2021-04-28 23:26:02,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 550 transitions. [2021-04-28 23:26:02,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:02,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 550 transitions. [2021-04-28 23:26:02,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 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) [2021-04-28 23:26:02,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 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) [2021-04-28 23:26:02,816 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 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) [2021-04-28 23:26:02,816 INFO L185 Difference]: Start difference. First operand has 42 places, 29 transitions, 123 flow. Second operand 5 states and 550 transitions. [2021-04-28 23:26:02,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 35 transitions, 191 flow [2021-04-28 23:26:02,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 35 transitions, 178 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-04-28 23:26:02,824 INFO L241 Difference]: Finished difference. Result has 47 places, 28 transitions, 143 flow [2021-04-28 23:26:02,824 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2021-04-28 23:26:02,824 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -28 predicate places. [2021-04-28 23:26:02,824 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:02,825 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 28 transitions, 143 flow [2021-04-28 23:26:02,825 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 28 transitions, 143 flow [2021-04-28 23:26:02,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 28 transitions, 143 flow [2021-04-28 23:26:02,833 INFO L129 PetriNetUnfolder]: 6/42 cut-off events. [2021-04-28 23:26:02,833 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-04-28 23:26:02,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 42 events. 6/42 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 115 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 109. Up to 16 conditions per place. [2021-04-28 23:26:02,834 INFO L146 LiptonReduction]: Number of co-enabled transitions 236 [2021-04-28 23:26:02,865 INFO L158 LiptonReduction]: Checked pairs total: 43 [2021-04-28 23:26:02,866 INFO L160 LiptonReduction]: Total number of compositions: 1 [2021-04-28 23:26:02,866 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 42 [2021-04-28 23:26:02,875 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 28 transitions, 143 flow [2021-04-28 23:26:02,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 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) [2021-04-28 23:26:02,875 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:02,875 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:02,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-28 23:26:02,876 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:02,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:02,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1074566651, now seen corresponding path program 2 times [2021-04-28 23:26:02,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:02,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927632652] [2021-04-28 23:26:02,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:02,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:02,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:02,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:02,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 23:26:02,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:02,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927632652] [2021-04-28 23:26:02,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:02,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-28 23:26:02,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53056931] [2021-04-28 23:26:02,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:26:02,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:02,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:26:02,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:26:03,000 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 160 [2021-04-28 23:26:03,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 28 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:03,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:03,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 160 [2021-04-28 23:26:03,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:03,203 INFO L129 PetriNetUnfolder]: 533/891 cut-off events. [2021-04-28 23:26:03,204 INFO L130 PetriNetUnfolder]: For 2012/2128 co-relation queries the response was YES. [2021-04-28 23:26:03,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 891 events. 533/891 cut-off events. For 2012/2128 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 5192 event pairs, 258 based on Foata normal form. 69/462 useless extension candidates. Maximal degree in co-relation 2205. Up to 667 conditions per place. [2021-04-28 23:26:03,214 INFO L132 encePairwiseOnDemand]: 148/160 looper letters, 17 selfloop transitions, 17 changer transitions 7/56 dead transitions. [2021-04-28 23:26:03,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 279 flow [2021-04-28 23:26:03,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:26:03,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:26:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 567 transitions. [2021-04-28 23:26:03,217 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.70875 [2021-04-28 23:26:03,217 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 567 transitions. [2021-04-28 23:26:03,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 567 transitions. [2021-04-28 23:26:03,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:03,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 567 transitions. [2021-04-28 23:26:03,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 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) [2021-04-28 23:26:03,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:03,223 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:03,223 INFO L185 Difference]: Start difference. First operand has 46 places, 28 transitions, 143 flow. Second operand 5 states and 567 transitions. [2021-04-28 23:26:03,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 279 flow [2021-04-28 23:26:03,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 259 flow, removed 2 selfloop flow, removed 6 redundant places. [2021-04-28 23:26:03,229 INFO L241 Difference]: Finished difference. Result has 47 places, 43 transitions, 253 flow [2021-04-28 23:26:03,229 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2021-04-28 23:26:03,229 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -28 predicate places. [2021-04-28 23:26:03,229 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:03,230 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 43 transitions, 253 flow [2021-04-28 23:26:03,230 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 43 transitions, 253 flow [2021-04-28 23:26:03,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 43 transitions, 253 flow [2021-04-28 23:26:03,363 INFO L129 PetriNetUnfolder]: 542/926 cut-off events. [2021-04-28 23:26:03,363 INFO L130 PetriNetUnfolder]: For 1378/1480 co-relation queries the response was YES. [2021-04-28 23:26:03,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 926 events. 542/926 cut-off events. For 1378/1480 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 5668 event pairs, 252 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 2977. Up to 803 conditions per place. [2021-04-28 23:26:03,378 INFO L146 LiptonReduction]: Number of co-enabled transitions 314 [2021-04-28 23:26:03,384 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:26:03,385 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:03,385 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 156 [2021-04-28 23:26:03,386 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 253 flow [2021-04-28 23:26:03,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:03,387 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:03,387 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:03,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-28 23:26:03,387 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:03,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:03,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1777132126, now seen corresponding path program 1 times [2021-04-28 23:26:03,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:03,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889767803] [2021-04-28 23:26:03,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:03,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:03,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:03,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:03,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:03,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:03,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 23:26:03,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:03,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889767803] [2021-04-28 23:26:03,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:03,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:26:03,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967635466] [2021-04-28 23:26:03,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-28 23:26:03,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:03,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-28 23:26:03,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-28 23:26:03,446 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 160 [2021-04-28 23:26:03,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 253 flow. Second operand has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 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) [2021-04-28 23:26:03,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:03,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 160 [2021-04-28 23:26:03,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:03,689 INFO L129 PetriNetUnfolder]: 455/866 cut-off events. [2021-04-28 23:26:03,689 INFO L130 PetriNetUnfolder]: For 2369/3535 co-relation queries the response was YES. [2021-04-28 23:26:03,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3608 conditions, 866 events. 455/866 cut-off events. For 2369/3535 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 5783 event pairs, 63 based on Foata normal form. 96/464 useless extension candidates. Maximal degree in co-relation 3590. Up to 761 conditions per place. [2021-04-28 23:26:03,699 INFO L132 encePairwiseOnDemand]: 148/160 looper letters, 11 selfloop transitions, 33 changer transitions 12/71 dead transitions. [2021-04-28 23:26:03,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 531 flow [2021-04-28 23:26:03,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-28 23:26:03,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-28 23:26:03,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 793 transitions. [2021-04-28 23:26:03,704 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7080357142857143 [2021-04-28 23:26:03,704 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 793 transitions. [2021-04-28 23:26:03,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 793 transitions. [2021-04-28 23:26:03,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:03,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 793 transitions. [2021-04-28 23:26:03,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.28571428571429) internal successors, (793), 7 states have internal predecessors, (793), 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) [2021-04-28 23:26:03,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 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) [2021-04-28 23:26:03,712 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 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) [2021-04-28 23:26:03,712 INFO L185 Difference]: Start difference. First operand has 46 places, 43 transitions, 253 flow. Second operand 7 states and 793 transitions. [2021-04-28 23:26:03,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 531 flow [2021-04-28 23:26:03,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-28 23:26:03,722 INFO L241 Difference]: Finished difference. Result has 54 places, 59 transitions, 471 flow [2021-04-28 23:26:03,723 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=471, PETRI_PLACES=54, PETRI_TRANSITIONS=59} [2021-04-28 23:26:03,723 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -21 predicate places. [2021-04-28 23:26:03,723 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:03,723 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 59 transitions, 471 flow [2021-04-28 23:26:03,724 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 59 transitions, 471 flow [2021-04-28 23:26:03,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 59 transitions, 471 flow [2021-04-28 23:26:03,833 INFO L129 PetriNetUnfolder]: 320/734 cut-off events. [2021-04-28 23:26:03,834 INFO L130 PetriNetUnfolder]: For 2455/3319 co-relation queries the response was YES. [2021-04-28 23:26:03,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3484 conditions, 734 events. 320/734 cut-off events. For 2455/3319 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 5594 event pairs, 64 based on Foata normal form. 4/352 useless extension candidates. Maximal degree in co-relation 3464. Up to 632 conditions per place. [2021-04-28 23:26:03,850 INFO L146 LiptonReduction]: Number of co-enabled transitions 372 [2021-04-28 23:26:03,862 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:26:03,862 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:03,862 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 139 [2021-04-28 23:26:03,863 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 59 transitions, 471 flow [2021-04-28 23:26:03,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 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) [2021-04-28 23:26:03,864 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:03,864 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:03,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-28 23:26:03,865 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:03,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:03,865 INFO L82 PathProgramCache]: Analyzing trace with hash 742973143, now seen corresponding path program 1 times [2021-04-28 23:26:03,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:03,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742536660] [2021-04-28 23:26:03,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:03,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:03,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:03,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:03,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:03,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:03,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:03,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:03,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-28 23:26:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:03,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742536660] [2021-04-28 23:26:03,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:03,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-28 23:26:03,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259479525] [2021-04-28 23:26:03,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-28 23:26:03,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:03,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-28 23:26:03,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-28 23:26:03,928 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 160 [2021-04-28 23:26:03,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 471 flow. Second operand has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 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) [2021-04-28 23:26:03,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:03,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 160 [2021-04-28 23:26:03,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:04,202 INFO L129 PetriNetUnfolder]: 212/596 cut-off events. [2021-04-28 23:26:04,202 INFO L130 PetriNetUnfolder]: For 3031/4856 co-relation queries the response was YES. [2021-04-28 23:26:04,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3331 conditions, 596 events. 212/596 cut-off events. For 3031/4856 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 4817 event pairs, 0 based on Foata normal form. 111/370 useless extension candidates. Maximal degree in co-relation 3309. Up to 536 conditions per place. [2021-04-28 23:26:04,210 INFO L132 encePairwiseOnDemand]: 148/160 looper letters, 2 selfloop transitions, 43 changer transitions 9/69 dead transitions. [2021-04-28 23:26:04,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 663 flow [2021-04-28 23:26:04,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-28 23:26:04,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-04-28 23:26:04,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1001 transitions. [2021-04-28 23:26:04,215 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6951388888888889 [2021-04-28 23:26:04,215 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1001 transitions. [2021-04-28 23:26:04,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1001 transitions. [2021-04-28 23:26:04,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:04,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1001 transitions. [2021-04-28 23:26:04,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 111.22222222222223) internal successors, (1001), 9 states have internal predecessors, (1001), 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) [2021-04-28 23:26:04,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 160.0) internal successors, (1600), 10 states have internal predecessors, (1600), 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) [2021-04-28 23:26:04,223 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 160.0) internal successors, (1600), 10 states have internal predecessors, (1600), 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) [2021-04-28 23:26:04,223 INFO L185 Difference]: Start difference. First operand has 54 places, 59 transitions, 471 flow. Second operand 9 states and 1001 transitions. [2021-04-28 23:26:04,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 663 flow [2021-04-28 23:26:04,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 69 transitions, 583 flow, removed 31 selfloop flow, removed 2 redundant places. [2021-04-28 23:26:04,242 INFO L241 Difference]: Finished difference. Result has 63 places, 60 transitions, 515 flow [2021-04-28 23:26:04,243 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=515, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2021-04-28 23:26:04,243 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -12 predicate places. [2021-04-28 23:26:04,243 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:04,244 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 60 transitions, 515 flow [2021-04-28 23:26:04,244 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 60 transitions, 515 flow [2021-04-28 23:26:04,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 60 transitions, 515 flow [2021-04-28 23:26:04,316 INFO L129 PetriNetUnfolder]: 149/473 cut-off events. [2021-04-28 23:26:04,316 INFO L130 PetriNetUnfolder]: For 1911/2236 co-relation queries the response was YES. [2021-04-28 23:26:04,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2336 conditions, 473 events. 149/473 cut-off events. For 1911/2236 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 3815 event pairs, 1 based on Foata normal form. 3/234 useless extension candidates. Maximal degree in co-relation 2312. Up to 235 conditions per place. [2021-04-28 23:26:04,326 INFO L146 LiptonReduction]: Number of co-enabled transitions 372 [2021-04-28 23:26:04,340 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:26:04,340 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:04,340 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 97 [2021-04-28 23:26:04,341 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 515 flow [2021-04-28 23:26:04,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 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) [2021-04-28 23:26:04,342 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:04,342 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:04,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-28 23:26:04,342 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:04,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:04,343 INFO L82 PathProgramCache]: Analyzing trace with hash -319416866, now seen corresponding path program 1 times [2021-04-28 23:26:04,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:04,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779233977] [2021-04-28 23:26:04,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:04,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:04,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 23:26:04,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:04,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:04,385 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-28 23:26:04,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-28 23:26:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:04,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779233977] [2021-04-28 23:26:04,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:04,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:26:04,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328532979] [2021-04-28 23:26:04,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:26:04,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:04,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:26:04,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:26:04,398 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 160 [2021-04-28 23:26:04,399 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 515 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:04,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:04,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 160 [2021-04-28 23:26:04,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:04,543 INFO L129 PetriNetUnfolder]: 238/689 cut-off events. [2021-04-28 23:26:04,544 INFO L130 PetriNetUnfolder]: For 4095/4582 co-relation queries the response was YES. [2021-04-28 23:26:04,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3455 conditions, 689 events. 238/689 cut-off events. For 4095/4582 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 5744 event pairs, 0 based on Foata normal form. 35/361 useless extension candidates. Maximal degree in co-relation 3429. Up to 346 conditions per place. [2021-04-28 23:26:04,551 INFO L132 encePairwiseOnDemand]: 153/160 looper letters, 4 selfloop transitions, 8 changer transitions 3/63 dead transitions. [2021-04-28 23:26:04,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 567 flow [2021-04-28 23:26:04,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-28 23:26:04,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-28 23:26:04,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 532 transitions. [2021-04-28 23:26:04,554 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.665 [2021-04-28 23:26:04,554 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 532 transitions. [2021-04-28 23:26:04,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 532 transitions. [2021-04-28 23:26:04,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:04,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 532 transitions. [2021-04-28 23:26:04,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 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) [2021-04-28 23:26:04,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:04,560 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:04,561 INFO L185 Difference]: Start difference. First operand has 62 places, 60 transitions, 515 flow. Second operand 5 states and 532 transitions. [2021-04-28 23:26:04,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 567 flow [2021-04-28 23:26:04,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 423 flow, removed 34 selfloop flow, removed 8 redundant places. [2021-04-28 23:26:04,620 INFO L241 Difference]: Finished difference. Result has 60 places, 60 transitions, 407 flow [2021-04-28 23:26:04,620 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=407, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2021-04-28 23:26:04,620 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -15 predicate places. [2021-04-28 23:26:04,621 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:04,621 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 60 transitions, 407 flow [2021-04-28 23:26:04,621 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 60 transitions, 407 flow [2021-04-28 23:26:04,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 60 transitions, 407 flow [2021-04-28 23:26:04,707 INFO L129 PetriNetUnfolder]: 227/644 cut-off events. [2021-04-28 23:26:04,707 INFO L130 PetriNetUnfolder]: For 1455/1507 co-relation queries the response was YES. [2021-04-28 23:26:04,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 644 events. 227/644 cut-off events. For 1455/1507 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 5368 event pairs, 0 based on Foata normal form. 4/315 useless extension candidates. Maximal degree in co-relation 2188. Up to 280 conditions per place. [2021-04-28 23:26:04,718 INFO L146 LiptonReduction]: Number of co-enabled transitions 346 [2021-04-28 23:26:04,730 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:26:04,731 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:04,731 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 110 [2021-04-28 23:26:04,732 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 407 flow [2021-04-28 23:26:04,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-28 23:26:04,733 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-28 23:26:04,733 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-28 23:26:04,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-28 23:26:04,733 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-28 23:26:04,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-28 23:26:04,734 INFO L82 PathProgramCache]: Analyzing trace with hash -716513181, now seen corresponding path program 1 times [2021-04-28 23:26:04,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-28 23:26:04,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546821723] [2021-04-28 23:26:04,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-28 23:26:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-28 23:26:04,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:04,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-28 23:26:04,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:04,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:04,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-28 23:26:04,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-28 23:26:04,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-28 23:26:04,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546821723] [2021-04-28 23:26:04,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-28 23:26:04,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-28 23:26:04,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461261163] [2021-04-28 23:26:04,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-28 23:26:04,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-28 23:26:04,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-28 23:26:04,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-28 23:26:04,802 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 160 [2021-04-28 23:26:04,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 407 flow. Second operand has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 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) [2021-04-28 23:26:04,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-28 23:26:04,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 160 [2021-04-28 23:26:04,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-28 23:26:04,899 INFO L129 PetriNetUnfolder]: 227/617 cut-off events. [2021-04-28 23:26:04,899 INFO L130 PetriNetUnfolder]: For 1871/1968 co-relation queries the response was YES. [2021-04-28 23:26:04,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 617 events. 227/617 cut-off events. For 1871/1968 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 4925 event pairs, 0 based on Foata normal form. 31/307 useless extension candidates. Maximal degree in co-relation 1923. Up to 280 conditions per place. [2021-04-28 23:26:04,904 INFO L132 encePairwiseOnDemand]: 157/160 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2021-04-28 23:26:04,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 395 flow [2021-04-28 23:26:04,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-28 23:26:04,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-28 23:26:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 472 transitions. [2021-04-28 23:26:04,907 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7375 [2021-04-28 23:26:04,907 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 472 transitions. [2021-04-28 23:26:04,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 472 transitions. [2021-04-28 23:26:04,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-28 23:26:04,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 472 transitions. [2021-04-28 23:26:04,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 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) [2021-04-28 23:26:04,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 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) [2021-04-28 23:26:04,912 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 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) [2021-04-28 23:26:04,912 INFO L185 Difference]: Start difference. First operand has 60 places, 60 transitions, 407 flow. Second operand 4 states and 472 transitions. [2021-04-28 23:26:04,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 395 flow [2021-04-28 23:26:04,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 336 flow, removed 1 selfloop flow, removed 11 redundant places. [2021-04-28 23:26:04,938 INFO L241 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2021-04-28 23:26:04,939 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2021-04-28 23:26:04,939 INFO L343 CegarLoopForPetriNet]: 75 programPoint places, -24 predicate places. [2021-04-28 23:26:04,939 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-28 23:26:04,939 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 0 transitions, 0 flow [2021-04-28 23:26:04,940 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 0 transitions, 0 flow [2021-04-28 23:26:04,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-28 23:26:04,940 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-28 23:26:04,940 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-28 23:26:04,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-28 23:26:04,940 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-28 23:26:04,941 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-28 23:26:04,941 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-28 23:26:04,941 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-28 23:26:04,942 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-28 23:26:04,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 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) [2021-04-28 23:26:04,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-28 23:26:04,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 11:26:04 BasicIcfg [2021-04-28 23:26:04,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-28 23:26:04,950 INFO L168 Benchmark]: Toolchain (without parser) took 12596.01 ms. Allocated memory was 320.9 MB in the beginning and 488.6 MB in the end (delta: 167.8 MB). Free memory was 294.6 MB in the beginning and 430.4 MB in the end (delta: -135.7 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.0 GB. [2021-04-28 23:26:04,950 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 320.9 MB. Free memory is still 289.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 23:26:04,951 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.44 ms. Allocated memory is still 320.9 MB. Free memory was 291.4 MB in the beginning and 288.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.0 GB. [2021-04-28 23:26:04,951 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.89 ms. Allocated memory is still 320.9 MB. Free memory was 288.6 MB in the beginning and 286.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-28 23:26:04,951 INFO L168 Benchmark]: Boogie Preprocessor took 30.33 ms. Allocated memory is still 320.9 MB. Free memory was 286.7 MB in the beginning and 285.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 23:26:04,952 INFO L168 Benchmark]: RCFGBuilder took 560.62 ms. Allocated memory is still 320.9 MB. Free memory was 285.7 MB in the beginning and 261.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-04-28 23:26:04,952 INFO L168 Benchmark]: TraceAbstraction took 11158.26 ms. Allocated memory was 320.9 MB in the beginning and 488.6 MB in the end (delta: 167.8 MB). Free memory was 260.5 MB in the beginning and 430.4 MB in the end (delta: -169.8 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-28 23:26:04,954 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 320.9 MB. Free memory is still 289.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 732.44 ms. Allocated memory is still 320.9 MB. Free memory was 291.4 MB in the beginning and 288.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.89 ms. Allocated memory is still 320.9 MB. Free memory was 288.6 MB in the beginning and 286.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.33 ms. Allocated memory is still 320.9 MB. Free memory was 286.7 MB in the beginning and 285.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 560.62 ms. Allocated memory is still 320.9 MB. Free memory was 285.7 MB in the beginning and 261.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 11158.26 ms. Allocated memory was 320.9 MB in the beginning and 488.6 MB in the end (delta: 167.8 MB). Free memory was 260.5 MB in the beginning and 430.4 MB in the end (delta: -169.8 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7288.5ms, 69 PlacesBefore, 75 PlacesAfterwards, 60 TransitionsBefore, 65 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 84 TotalNumberOfCompositions, 5648 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1624, positive: 1458, positive conditional: 1458, positive unconditional: 0, negative: 166, negative conditional: 166, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 857, positive: 807, positive conditional: 0, positive unconditional: 807, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 857, positive: 807, positive conditional: 0, positive unconditional: 807, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 857, positive: 795, positive conditional: 0, positive unconditional: 795, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 62, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 274, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 220, negative conditional: 0, negative unconditional: 220, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1624, positive: 651, positive conditional: 651, positive unconditional: 0, negative: 116, negative conditional: 116, negative unconditional: 0, unknown: 857, unknown conditional: 857, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 836, Positive cache size: 786, Positive conditional cache size: 786, Positive unconditional cache size: 0, Negative cache size: 50, Negative conditional cache size: 50, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 158.7ms, 75 PlacesBefore, 35 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 322 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 349 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 175, positive: 152, positive conditional: 152, positive unconditional: 0, negative: 23, negative conditional: 23, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 91, positive: 83, positive conditional: 1, positive unconditional: 82, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 91, positive: 83, positive conditional: 1, positive unconditional: 82, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 91, positive: 53, positive conditional: 0, positive unconditional: 53, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 38, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 142, positive: 106, positive conditional: 0, positive unconditional: 106, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 175, positive: 69, positive conditional: 69, positive unconditional: 0, negative: 15, negative conditional: 15, negative unconditional: 0, unknown: 91, unknown conditional: 91, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 927, Positive cache size: 869, Positive conditional cache size: 869, Positive unconditional cache size: 0, Negative cache size: 58, Negative conditional cache size: 58, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 25.1ms, 39 PlacesBefore, 39 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 364 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 57 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 929, Positive cache size: 870, Positive conditional cache size: 870, Positive unconditional cache size: 0, Negative cache size: 59, Negative conditional cache size: 59, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.8ms, 44 PlacesBefore, 43 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 282 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 37 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 9, unknown conditional: 9, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 938, Positive cache size: 878, Positive conditional cache size: 878, Positive unconditional cache size: 0, Negative cache size: 60, Negative conditional cache size: 60, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.9ms, 42 PlacesBefore, 42 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 296 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 39 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 939, Positive cache size: 879, Positive conditional cache size: 879, Positive unconditional cache size: 0, Negative cache size: 60, Negative conditional cache size: 60, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 40.8ms, 47 PlacesBefore, 46 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 236 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 43 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 12, positive: 7, positive conditional: 7, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 942, Positive cache size: 882, Positive conditional cache size: 882, Positive unconditional cache size: 0, Negative cache size: 60, Negative conditional cache size: 60, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 154.7ms, 47 PlacesBefore, 46 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 314 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 942, Positive cache size: 882, Positive conditional cache size: 882, Positive unconditional cache size: 0, Negative cache size: 60, Negative conditional cache size: 60, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 138.5ms, 54 PlacesBefore, 54 PlacesAfterwards, 59 TransitionsBefore, 59 TransitionsAfterwards, 372 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 942, Positive cache size: 882, Positive conditional cache size: 882, Positive unconditional cache size: 0, Negative cache size: 60, Negative conditional cache size: 60, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 95.9ms, 63 PlacesBefore, 62 PlacesAfterwards, 60 TransitionsBefore, 60 TransitionsAfterwards, 372 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 942, Positive cache size: 882, Positive conditional cache size: 882, Positive unconditional cache size: 0, Negative cache size: 60, Negative conditional cache size: 60, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 109.6ms, 60 PlacesBefore, 60 PlacesAfterwards, 60 TransitionsBefore, 60 TransitionsAfterwards, 346 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 942, Positive cache size: 882, Positive conditional cache size: 882, Positive unconditional cache size: 0, Negative cache size: 60, Negative conditional cache size: 60, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2ms, 51 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 942, Positive cache size: 882, Positive conditional cache size: 882, Positive unconditional cache size: 0, Negative cache size: 60, Negative conditional cache size: 60, Negative unconditional cache size: 0 - 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: 14.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 11013.4ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1623.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7414.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 56 SDtfs, 54 SDslu, 20 SDs, 0 SdLazy, 297 SolverSat, 100 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 309.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 167.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=515occurred in iteration=8, InterpolantAutomatonStates: 51, 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: 27.0ms SsaConstructionTime, 220.9ms SatisfiabilityAnalysisTime, 655.8ms InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 490 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...