/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 15:01:44,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 15:01:44,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 15:01:44,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 15:01:44,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 15:01:44,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 15:01:44,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 15:01:44,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 15:01:44,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 15:01:44,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 15:01:44,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 15:01:44,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 15:01:44,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 15:01:44,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 15:01:44,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 15:01:44,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 15:01:44,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 15:01:44,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 15:01:44,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 15:01:44,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 15:01:44,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 15:01:44,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 15:01:44,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 15:01:44,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 15:01:44,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 15:01:44,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 15:01:44,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 15:01:44,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 15:01:44,724 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-RepeatedSemanticLbe.epf [2021-03-25 15:01:44,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 15:01:44,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 15:01:44,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 15:01:44,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 15:01:44,761 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 15:01:44,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 15:01:44,761 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 15:01:44,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 15:01:44,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 15:01:44,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 15:01:44,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 15:01:44,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 15:01:44,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 15:01:44,763 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 15:01:44,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 15:01:44,763 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 15:01:44,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 15:01:44,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 15:01:44,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 15:01:44,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 15:01:44,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 15:01:44,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 15:01:44,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 15:01:44,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 15:01:44,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 15:01:44,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 15:01:44,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 15:01:44,765 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 15:01:44,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 15:01:44,766 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 15:01:45,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 15:01:45,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 15:01:45,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 15:01:45,218 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 15:01:45,219 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 15:01:45,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i [2021-03-25 15:01:45,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb4bcfab0/9bb8d58556c546cd8ae69a89af53f030/FLAG153a8d1fb [2021-03-25 15:01:45,814 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 15:01:45,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i [2021-03-25 15:01:45,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb4bcfab0/9bb8d58556c546cd8ae69a89af53f030/FLAG153a8d1fb [2021-03-25 15:01:46,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb4bcfab0/9bb8d58556c546cd8ae69a89af53f030 [2021-03-25 15:01:46,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 15:01:46,131 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 15:01:46,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 15:01:46,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 15:01:46,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 15:01:46,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 03:01:46" (1/1) ... [2021-03-25 15:01:46,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12129f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:46, skipping insertion in model container [2021-03-25 15:01:46,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 03:01:46" (1/1) ... [2021-03-25 15:01:46,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 15:01:46,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 15:01:46,366 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/safe029_tso.oepc.i[950,963] [2021-03-25 15:01:46,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 15:01:46,541 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 15:01:46,554 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/safe029_tso.oepc.i[950,963] [2021-03-25 15:01:46,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 15:01:46,655 INFO L208 MainTranslator]: Completed translation [2021-03-25 15:01:46,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:46 WrapperNode [2021-03-25 15:01:46,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 15:01:46,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 15:01:46,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 15:01:46,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 15:01:46,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:46" (1/1) ... [2021-03-25 15:01:46,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:46" (1/1) ... [2021-03-25 15:01:46,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 15:01:46,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 15:01:46,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 15:01:46,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 15:01:46,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:46" (1/1) ... [2021-03-25 15:01:46,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:46" (1/1) ... [2021-03-25 15:01:46,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:46" (1/1) ... [2021-03-25 15:01:46,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:46" (1/1) ... [2021-03-25 15:01:46,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:46" (1/1) ... [2021-03-25 15:01:46,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:46" (1/1) ... [2021-03-25 15:01:46,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:46" (1/1) ... [2021-03-25 15:01:46,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 15:01:46,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 15:01:46,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 15:01:46,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 15:01:46,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 15:01:46,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 15:01:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 15:01:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 15:01:46,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 15:01:46,823 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 15:01:46,823 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 15:01:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 15:01:46,824 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 15:01:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 15:01:46,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 15:01:46,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 15:01:46,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 15:01:46,829 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 15:01:47,176 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 15:01:47,177 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 15:01:47,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 03:01:47 BoogieIcfgContainer [2021-03-25 15:01:47,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 15:01:47,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 15:01:47,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 15:01:47,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 15:01:47,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 03:01:46" (1/3) ... [2021-03-25 15:01:47,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d90a19e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 03:01:47, skipping insertion in model container [2021-03-25 15:01:47,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:46" (2/3) ... [2021-03-25 15:01:47,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d90a19e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 03:01:47, skipping insertion in model container [2021-03-25 15:01:47,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 03:01:47" (3/3) ... [2021-03-25 15:01:47,186 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_tso.oepc.i [2021-03-25 15:01:47,191 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 15:01:47,195 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 15:01:47,195 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 15:01:47,220 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,221 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,221 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,221 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,221 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,221 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,221 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,222 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,222 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,223 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,223 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,223 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,224 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,224 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,224 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,224 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,224 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,225 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,226 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,226 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,226 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,228 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,229 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,229 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,230 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,234 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,234 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:01:47,236 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 15:01:47,254 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 15:01:47,273 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 15:01:47,273 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 15:01:47,274 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 15:01:47,274 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 15:01:47,274 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 15:01:47,274 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 15:01:47,274 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 15:01:47,274 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 15:01:47,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 59 transitions, 128 flow [2021-03-25 15:01:47,318 INFO L129 PetriNetUnfolder]: 2/57 cut-off events. [2021-03-25 15:01:47,319 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:01:47,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 57 events. 2/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-25 15:01:47,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 59 transitions, 128 flow [2021-03-25 15:01:47,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 47 transitions, 100 flow [2021-03-25 15:01:47,328 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:01:47,342 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 47 transitions, 100 flow [2021-03-25 15:01:47,345 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 47 transitions, 100 flow [2021-03-25 15:01:47,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 100 flow [2021-03-25 15:01:47,358 INFO L129 PetriNetUnfolder]: 1/47 cut-off events. [2021-03-25 15:01:47,359 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:01:47,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-03-25 15:01:47,361 INFO L142 LiptonReduction]: Number of co-enabled transitions 456 [2021-03-25 15:01:48,696 INFO L154 LiptonReduction]: Checked pairs total: 644 [2021-03-25 15:01:48,696 INFO L156 LiptonReduction]: Total number of compositions: 31 [2021-03-25 15:01:48,698 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1371 [2021-03-25 15:01:48,718 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-25 15:01:48,719 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:01:48,719 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:01:48,719 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:01:48,720 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:01:48,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:01:48,724 INFO L82 PathProgramCache]: Analyzing trace with hash 769405957, now seen corresponding path program 1 times [2021-03-25 15:01:48,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:01:48,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998671252] [2021-03-25 15:01:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:01:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:01:48,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:01:48,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:01:48,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:01:48,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:01:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:01:48,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998671252] [2021-03-25 15:01:48,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:01:48,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 15:01:48,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027025009] [2021-03-25 15:01:48,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 15:01:48,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:01:49,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 15:01:49,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 15:01:49,012 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 90 [2021-03-25 15:01:49,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:49,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:01:49,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 90 [2021-03-25 15:01:49,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:01:49,045 INFO L129 PetriNetUnfolder]: 3/26 cut-off events. [2021-03-25 15:01:49,046 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:01:49,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 26 events. 3/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 1 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 33. Up to 10 conditions per place. [2021-03-25 15:01:49,047 INFO L132 encePairwiseOnDemand]: 86/90 looper letters, 3 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2021-03-25 15:01:49,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 18 transitions, 54 flow [2021-03-25 15:01:49,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 15:01:49,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 15:01:49,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2021-03-25 15:01:49,060 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8703703703703703 [2021-03-25 15:01:49,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2021-03-25 15:01:49,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2021-03-25 15:01:49,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:01:49,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2021-03-25 15:01:49,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:49,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:49,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:49,081 INFO L185 Difference]: Start difference. First operand has 23 places, 16 transitions, 38 flow. Second operand 3 states and 235 transitions. [2021-03-25 15:01:49,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 18 transitions, 54 flow [2021-03-25 15:01:49,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 52 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 15:01:49,102 INFO L241 Difference]: Finished difference. Result has 24 places, 18 transitions, 55 flow [2021-03-25 15:01:49,103 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2021-03-25 15:01:49,104 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2021-03-25 15:01:49,104 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:01:49,104 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 18 transitions, 55 flow [2021-03-25 15:01:49,105 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 18 transitions, 55 flow [2021-03-25 15:01:49,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 18 transitions, 55 flow [2021-03-25 15:01:49,109 INFO L129 PetriNetUnfolder]: 3/26 cut-off events. [2021-03-25 15:01:49,109 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:01:49,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 26 events. 3/26 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 1 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 35. Up to 10 conditions per place. [2021-03-25 15:01:49,110 INFO L142 LiptonReduction]: Number of co-enabled transitions 84 [2021-03-25 15:01:49,389 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2021-03-25 15:01:49,631 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2021-03-25 15:01:49,753 INFO L154 LiptonReduction]: Checked pairs total: 156 [2021-03-25 15:01:49,754 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 15:01:49,754 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 650 [2021-03-25 15:01:49,756 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 47 flow [2021-03-25 15:01:49,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:49,756 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:01:49,756 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:01:49,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 15:01:49,757 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:01:49,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:01:49,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1927306435, now seen corresponding path program 1 times [2021-03-25 15:01:49,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:01:49,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385455174] [2021-03-25 15:01:49,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:01:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:01:49,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:01:49,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:01:49,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:01:49,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:01:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:01:49,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385455174] [2021-03-25 15:01:49,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:01:49,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 15:01:49,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303270974] [2021-03-25 15:01:49,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 15:01:49,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:01:49,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 15:01:49,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 15:01:49,827 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 94 [2021-03-25 15:01:49,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:49,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:01:49,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 94 [2021-03-25 15:01:49,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:01:49,853 INFO L129 PetriNetUnfolder]: 8/31 cut-off events. [2021-03-25 15:01:49,853 INFO L130 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2021-03-25 15:01:49,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 31 events. 8/31 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 71 event pairs, 3 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 60. Up to 15 conditions per place. [2021-03-25 15:01:49,854 INFO L132 encePairwiseOnDemand]: 90/94 looper letters, 3 selfloop transitions, 3 changer transitions 0/16 dead transitions. [2021-03-25 15:01:49,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 16 transitions, 63 flow [2021-03-25 15:01:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 15:01:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 15:01:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2021-03-25 15:01:49,857 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8546099290780141 [2021-03-25 15:01:49,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2021-03-25 15:01:49,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2021-03-25 15:01:49,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:01:49,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2021-03-25 15:01:49,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:49,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:49,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:49,860 INFO L185 Difference]: Start difference. First operand has 20 places, 14 transitions, 47 flow. Second operand 3 states and 241 transitions. [2021-03-25 15:01:49,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 16 transitions, 63 flow [2021-03-25 15:01:49,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 16 transitions, 60 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 15:01:49,861 INFO L241 Difference]: Finished difference. Result has 22 places, 16 transitions, 63 flow [2021-03-25 15:01:49,862 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2021-03-25 15:01:49,862 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, -1 predicate places. [2021-03-25 15:01:49,862 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:01:49,862 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 16 transitions, 63 flow [2021-03-25 15:01:49,863 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 16 transitions, 63 flow [2021-03-25 15:01:49,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 22 places, 16 transitions, 63 flow [2021-03-25 15:01:49,867 INFO L129 PetriNetUnfolder]: 9/30 cut-off events. [2021-03-25 15:01:49,868 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:01:49,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 30 events. 9/30 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 69 event pairs, 3 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 60. Up to 15 conditions per place. [2021-03-25 15:01:49,868 INFO L142 LiptonReduction]: Number of co-enabled transitions 50 [2021-03-25 15:01:49,869 INFO L154 LiptonReduction]: Checked pairs total: 17 [2021-03-25 15:01:49,870 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 15:01:49,870 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-25 15:01:49,871 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 63 flow [2021-03-25 15:01:49,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:49,871 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:01:49,873 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:01:49,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 15:01:49,873 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:01:49,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:01:49,874 INFO L82 PathProgramCache]: Analyzing trace with hash -669008295, now seen corresponding path program 1 times [2021-03-25 15:01:49,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:01:49,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961073856] [2021-03-25 15:01:49,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:01:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:01:49,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:01:49,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:01:49,955 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-25 15:01:49,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:01:49,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:01:49,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961073856] [2021-03-25 15:01:49,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:01:49,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 15:01:49,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691807012] [2021-03-25 15:01:49,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 15:01:49,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:01:49,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 15:01:49,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 15:01:49,966 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 94 [2021-03-25 15:01:49,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:49,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:01:49,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 94 [2021-03-25 15:01:49,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:01:49,996 INFO L129 PetriNetUnfolder]: 7/36 cut-off events. [2021-03-25 15:01:49,996 INFO L130 PetriNetUnfolder]: For 20/28 co-relation queries the response was YES. [2021-03-25 15:01:49,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 36 events. 7/36 cut-off events. For 20/28 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 89 event pairs, 0 based on Foata normal form. 7/43 useless extension candidates. Maximal degree in co-relation 88. Up to 15 conditions per place. [2021-03-25 15:01:49,997 INFO L132 encePairwiseOnDemand]: 88/94 looper letters, 5 selfloop transitions, 9 changer transitions 0/20 dead transitions. [2021-03-25 15:01:49,997 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 20 transitions, 108 flow [2021-03-25 15:01:49,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 15:01:49,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 15:01:49,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2021-03-25 15:01:50,001 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8262411347517731 [2021-03-25 15:01:50,001 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2021-03-25 15:01:50,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2021-03-25 15:01:50,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:01:50,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2021-03-25 15:01:50,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:50,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:50,009 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:50,009 INFO L185 Difference]: Start difference. First operand has 22 places, 16 transitions, 63 flow. Second operand 3 states and 233 transitions. [2021-03-25 15:01:50,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 20 transitions, 108 flow [2021-03-25 15:01:50,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 20 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 15:01:50,012 INFO L241 Difference]: Finished difference. Result has 25 places, 20 transitions, 122 flow [2021-03-25 15:01:50,012 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2021-03-25 15:01:50,012 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2021-03-25 15:01:50,012 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:01:50,013 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 20 transitions, 122 flow [2021-03-25 15:01:50,015 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 20 transitions, 122 flow [2021-03-25 15:01:50,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 122 flow [2021-03-25 15:01:50,026 INFO L129 PetriNetUnfolder]: 7/36 cut-off events. [2021-03-25 15:01:50,026 INFO L130 PetriNetUnfolder]: For 26/31 co-relation queries the response was YES. [2021-03-25 15:01:50,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 36 events. 7/36 cut-off events. For 26/31 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 92 event pairs, 0 based on Foata normal form. 1/37 useless extension candidates. Maximal degree in co-relation 99. Up to 15 conditions per place. [2021-03-25 15:01:50,028 INFO L142 LiptonReduction]: Number of co-enabled transitions 58 [2021-03-25 15:01:50,030 INFO L154 LiptonReduction]: Checked pairs total: 40 [2021-03-25 15:01:50,030 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 15:01:50,030 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-03-25 15:01:50,035 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 122 flow [2021-03-25 15:01:50,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:50,035 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:01:50,036 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:01:50,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 15:01:50,036 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:01:50,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:01:50,036 INFO L82 PathProgramCache]: Analyzing trace with hash -669007489, now seen corresponding path program 1 times [2021-03-25 15:01:50,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:01:50,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916636059] [2021-03-25 15:01:50,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:01:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:01:50,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:01:50,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:01:50,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:01:50,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:01:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:01:50,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916636059] [2021-03-25 15:01:50,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:01:50,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 15:01:50,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083156249] [2021-03-25 15:01:50,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 15:01:50,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:01:50,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 15:01:50,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 15:01:50,109 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 94 [2021-03-25 15:01:50,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:50,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:01:50,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 94 [2021-03-25 15:01:50,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:01:50,126 INFO L129 PetriNetUnfolder]: 8/39 cut-off events. [2021-03-25 15:01:50,126 INFO L130 PetriNetUnfolder]: For 23/25 co-relation queries the response was YES. [2021-03-25 15:01:50,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 39 events. 8/39 cut-off events. For 23/25 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 102 event pairs, 1 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 106. Up to 18 conditions per place. [2021-03-25 15:01:50,127 INFO L132 encePairwiseOnDemand]: 90/94 looper letters, 3 selfloop transitions, 3 changer transitions 4/22 dead transitions. [2021-03-25 15:01:50,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 138 flow [2021-03-25 15:01:50,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 15:01:50,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 15:01:50,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2021-03-25 15:01:50,129 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8439716312056738 [2021-03-25 15:01:50,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2021-03-25 15:01:50,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2021-03-25 15:01:50,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:01:50,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2021-03-25 15:01:50,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:50,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:50,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:50,132 INFO L185 Difference]: Start difference. First operand has 25 places, 20 transitions, 122 flow. Second operand 3 states and 238 transitions. [2021-03-25 15:01:50,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 138 flow [2021-03-25 15:01:50,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 22 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 15:01:50,135 INFO L241 Difference]: Finished difference. Result has 26 places, 18 transitions, 99 flow [2021-03-25 15:01:50,135 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2021-03-25 15:01:50,135 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2021-03-25 15:01:50,135 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:01:50,136 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 18 transitions, 99 flow [2021-03-25 15:01:50,136 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 18 transitions, 99 flow [2021-03-25 15:01:50,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 18 transitions, 99 flow [2021-03-25 15:01:50,144 INFO L129 PetriNetUnfolder]: 5/29 cut-off events. [2021-03-25 15:01:50,144 INFO L130 PetriNetUnfolder]: For 12/16 co-relation queries the response was YES. [2021-03-25 15:01:50,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 29 events. 5/29 cut-off events. For 12/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 1 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 71. Up to 14 conditions per place. [2021-03-25 15:01:50,145 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-25 15:01:50,224 INFO L154 LiptonReduction]: Checked pairs total: 4 [2021-03-25 15:01:50,224 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:01:50,224 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 89 [2021-03-25 15:01:50,227 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 97 flow [2021-03-25 15:01:50,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:50,227 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:01:50,227 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:01:50,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 15:01:50,228 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:01:50,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:01:50,228 INFO L82 PathProgramCache]: Analyzing trace with hash -176447740, now seen corresponding path program 1 times [2021-03-25 15:01:50,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:01:50,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587312866] [2021-03-25 15:01:50,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:01:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:01:50,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:01:50,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:01:50,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:01:50,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:01:50,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:01:50,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:01:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:01:50,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587312866] [2021-03-25 15:01:50,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:01:50,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 15:01:50,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095746174] [2021-03-25 15:01:50,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 15:01:50,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:01:50,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 15:01:50,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 15:01:50,319 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 95 [2021-03-25 15:01:50,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:50,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:01:50,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 95 [2021-03-25 15:01:50,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:01:50,336 INFO L129 PetriNetUnfolder]: 2/17 cut-off events. [2021-03-25 15:01:50,337 INFO L130 PetriNetUnfolder]: For 25/29 co-relation queries the response was YES. [2021-03-25 15:01:50,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 17 events. 2/17 cut-off events. For 25/29 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 5/22 useless extension candidates. Maximal degree in co-relation 46. Up to 6 conditions per place. [2021-03-25 15:01:50,338 INFO L132 encePairwiseOnDemand]: 91/95 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2021-03-25 15:01:50,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 16 transitions, 97 flow [2021-03-25 15:01:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:01:50,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:01:50,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2021-03-25 15:01:50,340 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8263157894736842 [2021-03-25 15:01:50,340 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 314 transitions. [2021-03-25 15:01:50,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 314 transitions. [2021-03-25 15:01:50,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:01:50,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 314 transitions. [2021-03-25 15:01:50,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:50,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:50,343 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:50,343 INFO L185 Difference]: Start difference. First operand has 25 places, 17 transitions, 97 flow. Second operand 4 states and 314 transitions. [2021-03-25 15:01:50,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 16 transitions, 97 flow [2021-03-25 15:01:50,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 16 transitions, 85 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 15:01:50,344 INFO L241 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2021-03-25 15:01:50,344 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2021-03-25 15:01:50,344 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2021-03-25 15:01:50,344 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:01:50,344 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 0 transitions, 0 flow [2021-03-25 15:01:50,345 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 0 transitions, 0 flow [2021-03-25 15:01:50,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 15:01:50,345 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 15:01:50,345 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:01:50,345 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. [2021-03-25 15:01:50,345 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 15:01:50,345 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 15:01:50,345 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 15:01:50,345 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 15:01:50,348 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 15:01:50,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:01:50,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 15:01:50,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 03:01:50 BasicIcfg [2021-03-25 15:01:50,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 15:01:50,353 INFO L168 Benchmark]: Toolchain (without parser) took 4222.04 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 336.4 MB in the beginning and 343.2 MB in the end (delta: -6.8 MB). Peak memory consumption was 71.7 MB. Max. memory is 16.0 GB. [2021-03-25 15:01:50,353 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 373.3 MB. Free memory was 354.5 MB in the beginning and 354.4 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 15:01:50,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.18 ms. Allocated memory is still 373.3 MB. Free memory was 336.2 MB in the beginning and 335.4 MB in the end (delta: 805.2 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-03-25 15:01:50,354 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.73 ms. Allocated memory is still 373.3 MB. Free memory was 335.4 MB in the beginning and 334.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 15:01:50,354 INFO L168 Benchmark]: Boogie Preprocessor took 35.90 ms. Allocated memory is still 373.3 MB. Free memory was 334.3 MB in the beginning and 333.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 15:01:50,358 INFO L168 Benchmark]: RCFGBuilder took 430.26 ms. Allocated memory is still 373.3 MB. Free memory was 332.2 MB in the beginning and 312.3 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-03-25 15:01:50,359 INFO L168 Benchmark]: TraceAbstraction took 3171.92 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 312.3 MB in the beginning and 343.2 MB in the end (delta: -30.9 MB). Peak memory consumption was 47.6 MB. Max. memory is 16.0 GB. [2021-03-25 15:01:50,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 373.3 MB. Free memory was 354.5 MB in the beginning and 354.4 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 520.18 ms. Allocated memory is still 373.3 MB. Free memory was 336.2 MB in the beginning and 335.4 MB in the end (delta: 805.2 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.73 ms. Allocated memory is still 373.3 MB. Free memory was 335.4 MB in the beginning and 334.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 35.90 ms. Allocated memory is still 373.3 MB. Free memory was 334.3 MB in the beginning and 333.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 430.26 ms. Allocated memory is still 373.3 MB. Free memory was 332.2 MB in the beginning and 312.3 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3171.92 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 312.3 MB in the beginning and 343.2 MB in the end (delta: -30.9 MB). Peak memory consumption was 47.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1351.2ms, 53 PlacesBefore, 23 PlacesAfterwards, 47 TransitionsBefore, 16 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 31 TotalNumberOfCompositions, 644 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 419, positive: 386, positive conditional: 0, positive unconditional: 386, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 317, positive: 298, positive conditional: 0, positive unconditional: 298, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 317, positive: 298, positive conditional: 0, positive unconditional: 298, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 317, positive: 296, positive conditional: 0, positive unconditional: 296, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 21, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 100, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 90, negative conditional: 0, negative unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 419, positive: 88, positive conditional: 0, positive unconditional: 88, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 317, unknown conditional: 0, unknown unconditional: 317] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 649.0ms, 24 PlacesBefore, 20 PlacesAfterwards, 18 TransitionsBefore, 14 TransitionsAfterwards, 84 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 156 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 71, positive: 52, positive conditional: 0, positive unconditional: 52, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 17, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 17, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 17, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 24, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 71, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 17, unknown conditional: 0, unknown unconditional: 17] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.9ms, 22 PlacesBefore, 22 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 50 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 17 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 3, negative conditional: 0, negative unconditional: 3, 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: 16, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.9ms, 25 PlacesBefore, 25 PlacesAfterwards, 20 TransitionsBefore, 20 TransitionsAfterwards, 58 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 40 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 29, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , 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: 29, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 87.7ms, 26 PlacesBefore, 25 PlacesAfterwards, 18 TransitionsBefore, 17 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 4 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, 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: 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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , 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: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 25 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): 19, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3080.1ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 238.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1439.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 22 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=3, InterpolantAutomatonStates: 16, 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: 10.1ms SsaConstructionTime, 158.1ms SatisfiabilityAnalysisTime, 269.3ms InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 104 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...