/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 21:25:18,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 21:25:18,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 21:25:18,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 21:25:18,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 21:25:18,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 21:25:18,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 21:25:18,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 21:25:18,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 21:25:18,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 21:25:18,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 21:25:18,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 21:25:18,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 21:25:18,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 21:25:18,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 21:25:18,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 21:25:18,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 21:25:18,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 21:25:18,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 21:25:18,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 21:25:18,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 21:25:18,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 21:25:18,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 21:25:18,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 21:25:18,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 21:25:18,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 21:25:18,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 21:25:18,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 21:25:18,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-06-10 21:25:18,588 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 21:25:18,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 21:25:18,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 21:25:18,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 21:25:18,590 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 21:25:18,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 21:25:18,591 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 21:25:18,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 21:25:18,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 21:25:18,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 21:25:18,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 21:25:18,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 21:25:18,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 21:25:18,592 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 21:25:18,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 21:25:18,592 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 21:25:18,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 21:25:18,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 21:25:18,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 21:25:18,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 21:25:18,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 21:25:18,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:25:18,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 21:25:18,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 21:25:18,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 21:25:18,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 21:25:18,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 21:25:18,594 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 21:25:18,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 21:25:18,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 21:25:18,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 21:25:18,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 21:25:18,863 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 21:25:18,863 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 21:25:18,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2021-06-10 21:25:18,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bb3f1f52/4707f3789214470aa7ac642db3143c62/FLAGb0c495dc9 [2021-06-10 21:25:19,319 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 21:25:19,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2021-06-10 21:25:19,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bb3f1f52/4707f3789214470aa7ac642db3143c62/FLAGb0c495dc9 [2021-06-10 21:25:19,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bb3f1f52/4707f3789214470aa7ac642db3143c62 [2021-06-10 21:25:19,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 21:25:19,348 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 21:25:19,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 21:25:19,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 21:25:19,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 21:25:19,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:25:19" (1/1) ... [2021-06-10 21:25:19,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36842a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:25:19, skipping insertion in model container [2021-06-10 21:25:19,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:25:19" (1/1) ... [2021-06-10 21:25:19,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 21:25:19,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 21:25:19,575 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i[950,963] [2021-06-10 21:25:19,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:25:19,703 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 21:25:19,711 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i[950,963] [2021-06-10 21:25:19,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:25:19,778 INFO L208 MainTranslator]: Completed translation [2021-06-10 21:25:19,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:25:19 WrapperNode [2021-06-10 21:25:19,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 21:25:19,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 21:25:19,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 21:25:19,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 21:25:19,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:25:19" (1/1) ... [2021-06-10 21:25:19,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:25:19" (1/1) ... [2021-06-10 21:25:19,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 21:25:19,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 21:25:19,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 21:25:19,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 21:25:19,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:25:19" (1/1) ... [2021-06-10 21:25:19,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:25:19" (1/1) ... [2021-06-10 21:25:19,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:25:19" (1/1) ... [2021-06-10 21:25:19,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:25:19" (1/1) ... [2021-06-10 21:25:19,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:25:19" (1/1) ... [2021-06-10 21:25:19,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:25:19" (1/1) ... [2021-06-10 21:25:19,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:25:19" (1/1) ... [2021-06-10 21:25:19,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 21:25:19,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 21:25:19,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 21:25:19,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 21:25:19,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:25:19" (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 [2021-06-10 21:25:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 21:25:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 21:25:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 21:25:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 21:25:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 21:25:19,859 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 21:25:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 21:25:19,859 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 21:25:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 21:25:19,859 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 21:25:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 21:25:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 21:25:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 21:25:19,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 21:25:19,860 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 21:25:20,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 21:25:20,096 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 21:25:20,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:25:20 BoogieIcfgContainer [2021-06-10 21:25:20,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 21:25:20,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 21:25:20,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 21:25:20,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 21:25:20,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 09:25:19" (1/3) ... [2021-06-10 21:25:20,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d5a73a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:25:20, skipping insertion in model container [2021-06-10 21:25:20,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:25:19" (2/3) ... [2021-06-10 21:25:20,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d5a73a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:25:20, skipping insertion in model container [2021-06-10 21:25:20,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:25:20" (3/3) ... [2021-06-10 21:25:20,103 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.oepc.i [2021-06-10 21:25:20,106 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 21:25:20,109 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 21:25:20,109 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 21:25:20,136 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,136 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,136 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,136 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,136 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,137 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,137 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,137 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,137 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,137 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,137 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,137 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,141 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,141 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,141 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,141 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,142 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,142 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,142 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,142 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,142 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,142 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,142 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,142 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,143 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,143 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,143 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,143 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,143 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,143 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,143 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,143 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,143 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,144 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,144 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,144 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,145 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,145 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,145 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,146 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,152 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,152 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,152 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,152 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,155 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,155 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,155 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,155 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:25:20,157 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 21:25:20,169 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 21:25:20,182 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 21:25:20,182 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 21:25:20,182 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 21:25:20,182 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 21:25:20,182 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 21:25:20,182 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 21:25:20,182 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 21:25:20,182 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 21:25:20,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 21:25:20,212 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-06-10 21:25:20,212 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:25:20,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-06-10 21:25:20,215 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 21:25:20,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-06-10 21:25:20,218 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 21:25:20,225 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-06-10 21:25:20,228 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-06-10 21:25:20,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-06-10 21:25:20,239 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-06-10 21:25:20,240 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:25:20,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-06-10 21:25:20,242 INFO L151 LiptonReduction]: Number of co-enabled transitions 864 [2021-06-10 21:25:20,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:20,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:25:20,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:25:20,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:25:20,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:25:20,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:25:20,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:25:20,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:20,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:20,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:20,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:20,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:20,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:25:20,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:25:20,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:25:20,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:20,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:20,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:25:20,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:25:20,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:25:20,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:20,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:20,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:20,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:21,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:21,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:21,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:21,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:21,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:25:21,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:25:21,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:25:21,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:21,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:21,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:21,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:25:21,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 21:25:21,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-10 21:25:21,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:21,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,545 INFO L147 QuantifierPusher]: treesize reduction 22, result has 4.3 percent of original size 1 [2021-06-10 21:25:21,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:21,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:25:21,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:25:21,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:25:21,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:25:21,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:25:21,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:21,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:25:21,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:25:22,124 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-10 21:25:22,326 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-10 21:25:22,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:22,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:25:22,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:22,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:25:22,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:25:22,412 INFO L163 LiptonReduction]: Checked pairs total: 1712 [2021-06-10 21:25:22,412 INFO L165 LiptonReduction]: Total number of compositions: 44 [2021-06-10 21:25:22,414 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2197 [2021-06-10 21:25:22,421 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-06-10 21:25:22,421 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:25:22,421 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:25:22,421 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:25:22,422 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:25:22,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:25:22,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1536184128, now seen corresponding path program 1 times [2021-06-10 21:25:22,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:25:22,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749378763] [2021-06-10 21:25:22,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:25:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:25:22,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:22,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:25:22,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:25:22,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749378763] [2021-06-10 21:25:22,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:25:22,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:25:22,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795314649] [2021-06-10 21:25:22,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:25:22,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:25:22,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:25:22,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:25:22,585 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 119 [2021-06-10 21:25:22,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2021-06-10 21:25:22,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:25:22,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 119 [2021-06-10 21:25:22,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:25:22,609 INFO L129 PetriNetUnfolder]: 3/27 cut-off events. [2021-06-10 21:25:22,609 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:25:22,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 27 events. 3/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 1 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 38. Up to 10 conditions per place. [2021-06-10 21:25:22,610 INFO L132 encePairwiseOnDemand]: 115/119 looper letters, 3 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2021-06-10 21:25:22,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 59 flow [2021-06-10 21:25:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:25:22,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:25:22,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2021-06-10 21:25:22,623 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8683473389355743 [2021-06-10 21:25:22,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2021-06-10 21:25:22,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2021-06-10 21:25:22,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:25:22,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2021-06-10 21:25:22,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2021-06-10 21:25:22,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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) [2021-06-10 21:25:22,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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) [2021-06-10 21:25:22,637 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 310 transitions. [2021-06-10 21:25:22,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 59 flow [2021-06-10 21:25:22,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 56 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 21:25:22,640 INFO L241 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2021-06-10 21:25:22,641 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2021-06-10 21:25:22,642 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2021-06-10 21:25:22,642 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2021-06-10 21:25:22,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2021-06-10 21:25:22,642 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:25:22,642 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:25:22,642 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 21:25:22,643 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:25:22,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:25:22,643 INFO L82 PathProgramCache]: Analyzing trace with hash -381991717, now seen corresponding path program 1 times [2021-06-10 21:25:22,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:25:22,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315232040] [2021-06-10 21:25:22,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:25:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:25:22,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:22,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:25:22,712 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:25:22,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:25:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:25:22,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315232040] [2021-06-10 21:25:22,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:25:22,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:25:22,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311059795] [2021-06-10 21:25:22,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:25:22,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:25:22,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:25:22,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:25:22,721 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 119 [2021-06-10 21:25:22,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 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) [2021-06-10 21:25:22,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:25:22,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 119 [2021-06-10 21:25:22,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:25:22,740 INFO L129 PetriNetUnfolder]: 15/61 cut-off events. [2021-06-10 21:25:22,740 INFO L130 PetriNetUnfolder]: For 20/31 co-relation queries the response was YES. [2021-06-10 21:25:22,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 61 events. 15/61 cut-off events. For 20/31 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 189 event pairs, 3 based on Foata normal form. 5/64 useless extension candidates. Maximal degree in co-relation 131. Up to 29 conditions per place. [2021-06-10 21:25:22,741 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 8 selfloop transitions, 6 changer transitions 0/25 dead transitions. [2021-06-10 21:25:22,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 111 flow [2021-06-10 21:25:22,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:25:22,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:25:22,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2021-06-10 21:25:22,744 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8151260504201681 [2021-06-10 21:25:22,744 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 388 transitions. [2021-06-10 21:25:22,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 388 transitions. [2021-06-10 21:25:22,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:25:22,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 388 transitions. [2021-06-10 21:25:22,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2021-06-10 21:25:22,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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) [2021-06-10 21:25:22,746 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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) [2021-06-10 21:25:22,746 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 4 states and 388 transitions. [2021-06-10 21:25:22,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 111 flow [2021-06-10 21:25:22,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:25:22,747 INFO L241 Difference]: Finished difference. Result has 32 places, 23 transitions, 106 flow [2021-06-10 21:25:22,748 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2021-06-10 21:25:22,748 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2021-06-10 21:25:22,748 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 106 flow [2021-06-10 21:25:22,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 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) [2021-06-10 21:25:22,748 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:25:22,748 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:25:22,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 21:25:22,749 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:25:22,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:25:22,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1195784220, now seen corresponding path program 1 times [2021-06-10 21:25:22,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:25:22,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553581570] [2021-06-10 21:25:22,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:25:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:25:22,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:22,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:25:22,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:22,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:25:22,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:25:22,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553581570] [2021-06-10 21:25:22,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:25:22,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:25:22,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514158087] [2021-06-10 21:25:22,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:25:22,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:25:22,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:25:22,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:25:22,807 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 119 [2021-06-10 21:25:22,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 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) [2021-06-10 21:25:22,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:25:22,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 119 [2021-06-10 21:25:22,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:25:22,836 INFO L129 PetriNetUnfolder]: 11/67 cut-off events. [2021-06-10 21:25:22,836 INFO L130 PetriNetUnfolder]: For 103/107 co-relation queries the response was YES. [2021-06-10 21:25:22,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 67 events. 11/67 cut-off events. For 103/107 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 259 event pairs, 3 based on Foata normal form. 10/75 useless extension candidates. Maximal degree in co-relation 158. Up to 21 conditions per place. [2021-06-10 21:25:22,837 INFO L132 encePairwiseOnDemand]: 115/119 looper letters, 1 selfloop transitions, 3 changer transitions 3/24 dead transitions. [2021-06-10 21:25:22,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 24 transitions, 122 flow [2021-06-10 21:25:22,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:25:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:25:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 399 transitions. [2021-06-10 21:25:22,839 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8382352941176471 [2021-06-10 21:25:22,839 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 399 transitions. [2021-06-10 21:25:22,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 399 transitions. [2021-06-10 21:25:22,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:25:22,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 399 transitions. [2021-06-10 21:25:22,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 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) [2021-06-10 21:25:22,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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) [2021-06-10 21:25:22,842 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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) [2021-06-10 21:25:22,842 INFO L185 Difference]: Start difference. First operand has 32 places, 23 transitions, 106 flow. Second operand 4 states and 399 transitions. [2021-06-10 21:25:22,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 24 transitions, 122 flow [2021-06-10 21:25:22,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 24 transitions, 117 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-06-10 21:25:22,844 INFO L241 Difference]: Finished difference. Result has 36 places, 21 transitions, 102 flow [2021-06-10 21:25:22,844 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=36, PETRI_TRANSITIONS=21} [2021-06-10 21:25:22,844 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2021-06-10 21:25:22,844 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 21 transitions, 102 flow [2021-06-10 21:25:22,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 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) [2021-06-10 21:25:22,844 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:25:22,844 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:25:22,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 21:25:22,845 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:25:22,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:25:22,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1585428940, now seen corresponding path program 1 times [2021-06-10 21:25:22,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:25:22,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876940674] [2021-06-10 21:25:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:25:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:25:22,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:22,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:25:22,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:22,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:25:22,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:25:22,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876940674] [2021-06-10 21:25:22,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:25:22,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:25:22,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434713264] [2021-06-10 21:25:22,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:25:22,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:25:22,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:25:22,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:25:22,924 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 119 [2021-06-10 21:25:22,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 21 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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) [2021-06-10 21:25:22,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:25:22,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 119 [2021-06-10 21:25:22,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:25:22,964 INFO L129 PetriNetUnfolder]: 63/151 cut-off events. [2021-06-10 21:25:22,964 INFO L130 PetriNetUnfolder]: For 495/539 co-relation queries the response was YES. [2021-06-10 21:25:22,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 151 events. 63/151 cut-off events. For 495/539 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 710 event pairs, 27 based on Foata normal form. 20/160 useless extension candidates. Maximal degree in co-relation 390. Up to 96 conditions per place. [2021-06-10 21:25:22,967 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 7 selfloop transitions, 7 changer transitions 2/31 dead transitions. [2021-06-10 21:25:22,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 31 transitions, 154 flow [2021-06-10 21:25:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:25:22,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:25:22,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 483 transitions. [2021-06-10 21:25:22,971 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8117647058823529 [2021-06-10 21:25:22,971 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 483 transitions. [2021-06-10 21:25:22,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 483 transitions. [2021-06-10 21:25:22,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:25:22,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 483 transitions. [2021-06-10 21:25:22,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 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) [2021-06-10 21:25:22,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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) [2021-06-10 21:25:22,975 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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) [2021-06-10 21:25:22,975 INFO L185 Difference]: Start difference. First operand has 36 places, 21 transitions, 102 flow. Second operand 5 states and 483 transitions. [2021-06-10 21:25:22,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 31 transitions, 154 flow [2021-06-10 21:25:22,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 138 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-06-10 21:25:22,977 INFO L241 Difference]: Finished difference. Result has 39 places, 27 transitions, 140 flow [2021-06-10 21:25:22,977 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2021-06-10 21:25:22,977 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2021-06-10 21:25:22,977 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 140 flow [2021-06-10 21:25:22,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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) [2021-06-10 21:25:22,978 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:25:22,978 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:25:22,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 21:25:22,978 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:25:22,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:25:22,978 INFO L82 PathProgramCache]: Analyzing trace with hash -431922660, now seen corresponding path program 1 times [2021-06-10 21:25:22,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:25:22,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807791251] [2021-06-10 21:25:22,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:25:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:25:23,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:23,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:25:23,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:23,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:25:23,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:23,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:25:23,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:25:23,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807791251] [2021-06-10 21:25:23,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:25:23,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:25:23,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044385965] [2021-06-10 21:25:23,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:25:23,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:25:23,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:25:23,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:25:23,049 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 119 [2021-06-10 21:25:23,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 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) [2021-06-10 21:25:23,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:25:23,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 119 [2021-06-10 21:25:23,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:25:23,100 INFO L129 PetriNetUnfolder]: 41/123 cut-off events. [2021-06-10 21:25:23,100 INFO L130 PetriNetUnfolder]: For 406/652 co-relation queries the response was YES. [2021-06-10 21:25:23,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 123 events. 41/123 cut-off events. For 406/652 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 560 event pairs, 4 based on Foata normal form. 61/175 useless extension candidates. Maximal degree in co-relation 455. Up to 91 conditions per place. [2021-06-10 21:25:23,101 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 5 selfloop transitions, 13 changer transitions 4/37 dead transitions. [2021-06-10 21:25:23,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 242 flow [2021-06-10 21:25:23,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 21:25:23,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 21:25:23,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 675 transitions. [2021-06-10 21:25:23,110 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8103241296518607 [2021-06-10 21:25:23,110 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 675 transitions. [2021-06-10 21:25:23,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 675 transitions. [2021-06-10 21:25:23,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:25:23,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 675 transitions. [2021-06-10 21:25:23,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.42857142857143) internal successors, (675), 7 states have internal predecessors, (675), 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) [2021-06-10 21:25:23,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 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) [2021-06-10 21:25:23,113 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 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) [2021-06-10 21:25:23,113 INFO L185 Difference]: Start difference. First operand has 39 places, 27 transitions, 140 flow. Second operand 7 states and 675 transitions. [2021-06-10 21:25:23,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 242 flow [2021-06-10 21:25:23,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:25:23,117 INFO L241 Difference]: Finished difference. Result has 47 places, 33 transitions, 224 flow [2021-06-10 21:25:23,117 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=224, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2021-06-10 21:25:23,118 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2021-06-10 21:25:23,118 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 224 flow [2021-06-10 21:25:23,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 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) [2021-06-10 21:25:23,118 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:25:23,118 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:25:23,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 21:25:23,118 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:25:23,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:25:23,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1154638420, now seen corresponding path program 1 times [2021-06-10 21:25:23,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:25:23,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91530274] [2021-06-10 21:25:23,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:25:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:25:23,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:23,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:25:23,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:23,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:25:23,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:23,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:25:23,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:23,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:25:23,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:25:23,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91530274] [2021-06-10 21:25:23,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:25:23,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 21:25:23,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837183775] [2021-06-10 21:25:23,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 21:25:23,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:25:23,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 21:25:23,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-10 21:25:23,158 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 119 [2021-06-10 21:25:23,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 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) [2021-06-10 21:25:23,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:25:23,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 119 [2021-06-10 21:25:23,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:25:23,215 INFO L129 PetriNetUnfolder]: 23/96 cut-off events. [2021-06-10 21:25:23,215 INFO L130 PetriNetUnfolder]: For 513/795 co-relation queries the response was YES. [2021-06-10 21:25:23,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 96 events. 23/96 cut-off events. For 513/795 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 455 event pairs, 0 based on Foata normal form. 78/170 useless extension candidates. Maximal degree in co-relation 449. Up to 71 conditions per place. [2021-06-10 21:25:23,216 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 2 selfloop transitions, 17 changer transitions 3/37 dead transitions. [2021-06-10 21:25:23,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 37 transitions, 300 flow [2021-06-10 21:25:23,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 21:25:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 21:25:23,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 861 transitions. [2021-06-10 21:25:23,218 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.803921568627451 [2021-06-10 21:25:23,218 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 861 transitions. [2021-06-10 21:25:23,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 861 transitions. [2021-06-10 21:25:23,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:25:23,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 861 transitions. [2021-06-10 21:25:23,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 95.66666666666667) internal successors, (861), 9 states have internal predecessors, (861), 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) [2021-06-10 21:25:23,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 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) [2021-06-10 21:25:23,221 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 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) [2021-06-10 21:25:23,221 INFO L185 Difference]: Start difference. First operand has 47 places, 33 transitions, 224 flow. Second operand 9 states and 861 transitions. [2021-06-10 21:25:23,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 37 transitions, 300 flow [2021-06-10 21:25:23,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 37 transitions, 270 flow, removed 11 selfloop flow, removed 2 redundant places. [2021-06-10 21:25:23,223 INFO L241 Difference]: Finished difference. Result has 56 places, 34 transitions, 250 flow [2021-06-10 21:25:23,223 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=250, PETRI_PLACES=56, PETRI_TRANSITIONS=34} [2021-06-10 21:25:23,224 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 29 predicate places. [2021-06-10 21:25:23,224 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 34 transitions, 250 flow [2021-06-10 21:25:23,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 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) [2021-06-10 21:25:23,224 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:25:23,224 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:25:23,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 21:25:23,224 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:25:23,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:25:23,225 INFO L82 PathProgramCache]: Analyzing trace with hash -406204369, now seen corresponding path program 1 times [2021-06-10 21:25:23,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:25:23,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318418900] [2021-06-10 21:25:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:25:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:25:23,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:23,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:25:23,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:23,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:25:23,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:25:23,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:25:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:25:23,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318418900] [2021-06-10 21:25:23,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:25:23,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:25:23,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731830170] [2021-06-10 21:25:23,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:25:23,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:25:23,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:25:23,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:25:23,249 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 119 [2021-06-10 21:25:23,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 34 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2021-06-10 21:25:23,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:25:23,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 119 [2021-06-10 21:25:23,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:25:23,267 INFO L129 PetriNetUnfolder]: 26/112 cut-off events. [2021-06-10 21:25:23,267 INFO L130 PetriNetUnfolder]: For 454/507 co-relation queries the response was YES. [2021-06-10 21:25:23,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 112 events. 26/112 cut-off events. For 454/507 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 599 event pairs, 0 based on Foata normal form. 9/116 useless extension candidates. Maximal degree in co-relation 458. Up to 46 conditions per place. [2021-06-10 21:25:23,268 INFO L132 encePairwiseOnDemand]: 116/119 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2021-06-10 21:25:23,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 34 transitions, 244 flow [2021-06-10 21:25:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:25:23,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:25:23,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2021-06-10 21:25:23,269 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8340336134453782 [2021-06-10 21:25:23,269 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 397 transitions. [2021-06-10 21:25:23,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 397 transitions. [2021-06-10 21:25:23,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:25:23,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 397 transitions. [2021-06-10 21:25:23,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 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) [2021-06-10 21:25:23,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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) [2021-06-10 21:25:23,271 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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) [2021-06-10 21:25:23,271 INFO L185 Difference]: Start difference. First operand has 56 places, 34 transitions, 250 flow. Second operand 4 states and 397 transitions. [2021-06-10 21:25:23,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 34 transitions, 244 flow [2021-06-10 21:25:23,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 34 transitions, 173 flow, removed 13 selfloop flow, removed 12 redundant places. [2021-06-10 21:25:23,273 INFO L241 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2021-06-10 21:25:23,273 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2021-06-10 21:25:23,273 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2021-06-10 21:25:23,273 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2021-06-10 21:25:23,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2021-06-10 21:25:23,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 21:25:23,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 09:25:23 BasicIcfg [2021-06-10 21:25:23,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 21:25:23,277 INFO L168 Benchmark]: Toolchain (without parser) took 3928.12 ms. Allocated memory was 343.9 MB in the beginning and 471.9 MB in the end (delta: 127.9 MB). Free memory was 306.3 MB in the beginning and 221.5 MB in the end (delta: 84.7 MB). Peak memory consumption was 212.9 MB. Max. memory is 16.0 GB. [2021-06-10 21:25:23,278 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 343.9 MB. Free memory was 324.4 MB in the beginning and 324.3 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:25:23,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.64 ms. Allocated memory is still 343.9 MB. Free memory was 306.1 MB in the beginning and 305.4 MB in the end (delta: 658.6 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. [2021-06-10 21:25:23,281 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.77 ms. Allocated memory is still 343.9 MB. Free memory was 305.4 MB in the beginning and 303.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:25:23,282 INFO L168 Benchmark]: Boogie Preprocessor took 12.92 ms. Allocated memory is still 343.9 MB. Free memory was 303.3 MB in the beginning and 301.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:25:23,282 INFO L168 Benchmark]: RCFGBuilder took 281.07 ms. Allocated memory is still 343.9 MB. Free memory was 301.2 MB in the beginning and 277.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-10 21:25:23,282 INFO L168 Benchmark]: TraceAbstraction took 3177.36 ms. Allocated memory was 343.9 MB in the beginning and 471.9 MB in the end (delta: 127.9 MB). Free memory was 277.1 MB in the beginning and 221.5 MB in the end (delta: 55.5 MB). Peak memory consumption was 182.4 MB. Max. memory is 16.0 GB. [2021-06-10 21:25:23,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 343.9 MB. Free memory was 324.4 MB in the beginning and 324.3 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 427.64 ms. Allocated memory is still 343.9 MB. Free memory was 306.1 MB in the beginning and 305.4 MB in the end (delta: 658.6 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.77 ms. Allocated memory is still 343.9 MB. Free memory was 305.4 MB in the beginning and 303.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.92 ms. Allocated memory is still 343.9 MB. Free memory was 303.3 MB in the beginning and 301.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 281.07 ms. Allocated memory is still 343.9 MB. Free memory was 301.2 MB in the beginning and 277.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3177.36 ms. Allocated memory was 343.9 MB in the beginning and 471.9 MB in the end (delta: 127.9 MB). Free memory was 277.1 MB in the beginning and 221.5 MB in the end (delta: 55.5 MB). Peak memory consumption was 182.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2184.6ms, 69 PlacesBefore, 27 PlacesAfterwards, 60 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 44 TotalNumberOfCompositions, 1712 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1023, positive: 939, positive conditional: 0, positive unconditional: 939, negative: 84, negative conditional: 0, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 620, positive: 587, positive conditional: 0, positive unconditional: 587, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 620, positive: 587, positive conditional: 0, positive unconditional: 587, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 620, positive: 580, positive conditional: 0, positive unconditional: 580, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 113, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 95, negative conditional: 0, negative unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1023, positive: 352, positive conditional: 0, positive unconditional: 352, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 620, unknown conditional: 0, unknown unconditional: 620] , Statistics on independence cache: Total cache size (in pairs): 982, Positive cache size: 949, Positive conditional cache size: 0, Positive unconditional cache size: 949, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3094.7ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 342.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2236.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26 SDtfs, 16 SDslu, 17 SDs, 0 SdLazy, 104 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 74.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=250occurred in iteration=6, InterpolantAutomatonStates: 36, 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: 13.9ms SsaConstructionTime, 106.3ms SatisfiabilityAnalysisTime, 270.5ms InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...