/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 00:01:00,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 00:01:00,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 00:01:00,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 00:01:00,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 00:01:00,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 00:01:00,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 00:01:00,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 00:01:00,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 00:01:00,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 00:01:00,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 00:01:00,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 00:01:00,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 00:01:00,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 00:01:00,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 00:01:00,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 00:01:00,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 00:01:00,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 00:01:00,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 00:01:00,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 00:01:00,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 00:01:00,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 00:01:00,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 00:01:00,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 00:01:00,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 00:01:00,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 00:01:01,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 00:01:01,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 00:01:01,002 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 [2020-10-16 00:01:01,041 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 00:01:01,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 00:01:01,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 00:01:01,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 00:01:01,045 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 00:01:01,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 00:01:01,045 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 00:01:01,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 00:01:01,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 00:01:01,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 00:01:01,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 00:01:01,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 00:01:01,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 00:01:01,048 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 00:01:01,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 00:01:01,049 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 00:01:01,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 00:01:01,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 00:01:01,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 00:01:01,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 00:01:01,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 00:01:01,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 00:01:01,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 00:01:01,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 00:01:01,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 00:01:01,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 00:01:01,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 00:01:01,052 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 00:01:01,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 00:01:01,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 00:01:01,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 00:01:01,349 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 00:01:01,351 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 00:01:01,351 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 00:01:01,352 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2020-10-16 00:01:01,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacaaf837/98e14900ef06430ab9caab3ac6f28e1c/FLAG0d7c53a41 [2020-10-16 00:01:01,980 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 00:01:01,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2020-10-16 00:01:01,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacaaf837/98e14900ef06430ab9caab3ac6f28e1c/FLAG0d7c53a41 [2020-10-16 00:01:02,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacaaf837/98e14900ef06430ab9caab3ac6f28e1c [2020-10-16 00:01:02,180 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 00:01:02,181 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 00:01:02,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 00:01:02,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 00:01:02,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 00:01:02,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:01:02" (1/1) ... [2020-10-16 00:01:02,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff34b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:02, skipping insertion in model container [2020-10-16 00:01:02,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:01:02" (1/1) ... [2020-10-16 00:01:02,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 00:01:02,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 00:01:02,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:01:02,819 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 00:01:02,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:01:02,943 INFO L208 MainTranslator]: Completed translation [2020-10-16 00:01:02,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:02 WrapperNode [2020-10-16 00:01:02,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 00:01:02,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 00:01:02,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 00:01:02,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 00:01:02,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:02" (1/1) ... [2020-10-16 00:01:02,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:02" (1/1) ... [2020-10-16 00:01:02,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 00:01:02,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 00:01:02,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 00:01:02,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 00:01:03,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:02" (1/1) ... [2020-10-16 00:01:03,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:02" (1/1) ... [2020-10-16 00:01:03,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:02" (1/1) ... [2020-10-16 00:01:03,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:02" (1/1) ... [2020-10-16 00:01:03,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:02" (1/1) ... [2020-10-16 00:01:03,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:02" (1/1) ... [2020-10-16 00:01:03,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:02" (1/1) ... [2020-10-16 00:01:03,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 00:01:03,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 00:01:03,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 00:01:03,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 00:01:03,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 00:01:03,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 00:01:03,088 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 00:01:03,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 00:01:03,088 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 00:01:03,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 00:01:03,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 00:01:03,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 00:01:03,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 00:01:03,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 00:01:03,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 00:01:03,090 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 00:01:03,459 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 00:01:03,460 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-16 00:01:03,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:01:03 BoogieIcfgContainer [2020-10-16 00:01:03,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 00:01:03,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 00:01:03,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 00:01:03,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 00:01:03,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:01:02" (1/3) ... [2020-10-16 00:01:03,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea4d456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:01:03, skipping insertion in model container [2020-10-16 00:01:03,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:02" (2/3) ... [2020-10-16 00:01:03,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea4d456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:01:03, skipping insertion in model container [2020-10-16 00:01:03,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:01:03" (3/3) ... [2020-10-16 00:01:03,469 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2020-10-16 00:01:03,481 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 00:01:03,489 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 00:01:03,490 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 00:01:03,515 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,516 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,516 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,516 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,518 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,518 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,519 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,519 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,519 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,519 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,520 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,520 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,531 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,531 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,531 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,532 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:03,560 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 00:01:03,580 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 00:01:03,581 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 00:01:03,581 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 00:01:03,581 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 00:01:03,581 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 00:01:03,582 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 00:01:03,582 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 00:01:03,582 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 00:01:03,595 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 82 transitions, 186 flow [2020-10-16 00:01:03,634 INFO L129 PetriNetUnfolder]: 14/82 cut-off events. [2020-10-16 00:01:03,635 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 00:01:03,641 INFO L80 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 82 events. 14/82 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2020-10-16 00:01:03,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 82 transitions, 186 flow [2020-10-16 00:01:03,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 70 transitions, 152 flow [2020-10-16 00:01:03,650 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 00:01:03,653 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 70 transitions, 152 flow [2020-10-16 00:01:03,655 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 70 transitions, 152 flow [2020-10-16 00:01:03,656 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 63 places, 70 transitions, 152 flow [2020-10-16 00:01:03,676 INFO L129 PetriNetUnfolder]: 13/72 cut-off events. [2020-10-16 00:01:03,677 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 00:01:03,678 INFO L80 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 72 events. 13/72 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 111 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2020-10-16 00:01:03,681 INFO L117 LiptonReduction]: Number of co-enabled transitions 1428 [2020-10-16 00:01:04,808 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-16 00:01:04,894 INFO L132 LiptonReduction]: Checked pairs total: 4482 [2020-10-16 00:01:04,894 INFO L134 LiptonReduction]: Total number of compositions: 45 [2020-10-16 00:01:04,897 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1249 [2020-10-16 00:01:04,904 INFO L129 PetriNetUnfolder]: 2/12 cut-off events. [2020-10-16 00:01:04,905 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:01:04,905 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:04,906 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 00:01:04,906 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:01:04,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:04,913 INFO L82 PathProgramCache]: Analyzing trace with hash 322917380, now seen corresponding path program 1 times [2020-10-16 00:01:04,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:04,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414401704] [2020-10-16 00:01:04,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:01:05,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414401704] [2020-10-16 00:01:05,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:05,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:01:05,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112903759] [2020-10-16 00:01:05,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 00:01:05,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:05,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 00:01:05,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 00:01:05,105 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 127 [2020-10-16 00:01:05,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 38 transitions, 88 flow. Second operand 2 states. [2020-10-16 00:01:05,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:05,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 127 [2020-10-16 00:01:05,109 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:05,121 INFO L129 PetriNetUnfolder]: 6/37 cut-off events. [2020-10-16 00:01:05,121 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 00:01:05,122 INFO L80 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 6/37 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 66 event pairs, 0 based on Foata normal form. 3/32 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2020-10-16 00:01:05,124 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 0 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2020-10-16 00:01:05,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 82 flow [2020-10-16 00:01:05,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 00:01:05,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 00:01:05,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 219 transitions. [2020-10-16 00:01:05,138 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8622047244094488 [2020-10-16 00:01:05,139 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 219 transitions. [2020-10-16 00:01:05,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 219 transitions. [2020-10-16 00:01:05,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:05,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 219 transitions. [2020-10-16 00:01:05,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 00:01:05,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 00:01:05,153 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 00:01:05,156 INFO L185 Difference]: Start difference. First operand has 35 places, 38 transitions, 88 flow. Second operand 2 states and 219 transitions. [2020-10-16 00:01:05,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 82 flow [2020-10-16 00:01:05,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 74 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 00:01:05,163 INFO L241 Difference]: Finished difference. Result has 32 places, 35 transitions, 74 flow [2020-10-16 00:01:05,166 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=35} [2020-10-16 00:01:05,167 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2020-10-16 00:01:05,167 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 35 transitions, 74 flow [2020-10-16 00:01:05,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 00:01:05,167 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:05,168 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 00:01:05,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 00:01:05,168 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:01:05,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:05,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1420467102, now seen corresponding path program 1 times [2020-10-16 00:01:05,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:05,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781372381] [2020-10-16 00:01:05,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:05,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:01:05,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781372381] [2020-10-16 00:01:05,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:05,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:01:05,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548105589] [2020-10-16 00:01:05,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:01:05,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:05,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:01:05,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:01:05,238 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2020-10-16 00:01:05,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 35 transitions, 74 flow. Second operand 3 states. [2020-10-16 00:01:05,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:05,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2020-10-16 00:01:05,239 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:05,305 INFO L129 PetriNetUnfolder]: 13/83 cut-off events. [2020-10-16 00:01:05,305 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:01:05,307 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 83 events. 13/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 293 event pairs, 2 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 113. Up to 18 conditions per place. [2020-10-16 00:01:05,308 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 7 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2020-10-16 00:01:05,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 38 transitions, 100 flow [2020-10-16 00:01:05,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:01:05,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:01:05,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2020-10-16 00:01:05,317 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7559055118110236 [2020-10-16 00:01:05,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2020-10-16 00:01:05,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2020-10-16 00:01:05,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:05,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2020-10-16 00:01:05,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:01:05,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:01:05,328 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:01:05,328 INFO L185 Difference]: Start difference. First operand has 32 places, 35 transitions, 74 flow. Second operand 3 states and 288 transitions. [2020-10-16 00:01:05,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 38 transitions, 100 flow [2020-10-16 00:01:05,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 100 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 00:01:05,333 INFO L241 Difference]: Finished difference. Result has 36 places, 36 transitions, 94 flow [2020-10-16 00:01:05,333 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2020-10-16 00:01:05,334 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2020-10-16 00:01:05,334 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 94 flow [2020-10-16 00:01:05,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:01:05,335 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:05,335 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:01:05,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 00:01:05,335 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:01:05,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:05,336 INFO L82 PathProgramCache]: Analyzing trace with hash -652673828, now seen corresponding path program 1 times [2020-10-16 00:01:05,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:05,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604457588] [2020-10-16 00:01:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:05,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:01:05,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604457588] [2020-10-16 00:01:05,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:05,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:01:05,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911553692] [2020-10-16 00:01:05,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:01:05,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:05,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:01:05,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:01:05,414 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2020-10-16 00:01:05,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 94 flow. Second operand 3 states. [2020-10-16 00:01:05,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:05,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2020-10-16 00:01:05,415 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:05,441 INFO L129 PetriNetUnfolder]: 8/69 cut-off events. [2020-10-16 00:01:05,441 INFO L130 PetriNetUnfolder]: For 11/14 co-relation queries the response was YES. [2020-10-16 00:01:05,442 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 69 events. 8/69 cut-off events. For 11/14 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 228 event pairs, 2 based on Foata normal form. 6/67 useless extension candidates. Maximal degree in co-relation 109. Up to 11 conditions per place. [2020-10-16 00:01:05,442 INFO L132 encePairwiseOnDemand]: 123/127 looper letters, 6 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2020-10-16 00:01:05,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 110 flow [2020-10-16 00:01:05,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:01:05,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:01:05,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2020-10-16 00:01:05,445 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7506561679790026 [2020-10-16 00:01:05,445 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2020-10-16 00:01:05,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2020-10-16 00:01:05,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:05,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2020-10-16 00:01:05,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:01:05,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:01:05,449 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:01:05,449 INFO L185 Difference]: Start difference. First operand has 36 places, 36 transitions, 94 flow. Second operand 3 states and 286 transitions. [2020-10-16 00:01:05,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 110 flow [2020-10-16 00:01:05,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 00:01:05,451 INFO L241 Difference]: Finished difference. Result has 37 places, 36 transitions, 98 flow [2020-10-16 00:01:05,451 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2020-10-16 00:01:05,452 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2020-10-16 00:01:05,452 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 98 flow [2020-10-16 00:01:05,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:01:05,452 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:05,452 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:01:05,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 00:01:05,453 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:01:05,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:05,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1131504352, now seen corresponding path program 1 times [2020-10-16 00:01:05,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:05,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599392618] [2020-10-16 00:01:05,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:01:05,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599392618] [2020-10-16 00:01:05,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:05,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:01:05,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190915089] [2020-10-16 00:01:05,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:01:05,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:05,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:01:05,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:01:05,498 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2020-10-16 00:01:05,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 98 flow. Second operand 3 states. [2020-10-16 00:01:05,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:05,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2020-10-16 00:01:05,499 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:05,532 INFO L129 PetriNetUnfolder]: 25/122 cut-off events. [2020-10-16 00:01:05,532 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2020-10-16 00:01:05,533 INFO L80 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 122 events. 25/122 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 540 event pairs, 8 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 186. Up to 21 conditions per place. [2020-10-16 00:01:05,534 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 6 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2020-10-16 00:01:05,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 38 transitions, 122 flow [2020-10-16 00:01:05,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:01:05,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:01:05,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2020-10-16 00:01:05,536 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7532808398950132 [2020-10-16 00:01:05,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2020-10-16 00:01:05,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2020-10-16 00:01:05,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:05,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2020-10-16 00:01:05,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:01:05,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:01:05,540 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:01:05,540 INFO L185 Difference]: Start difference. First operand has 37 places, 36 transitions, 98 flow. Second operand 3 states and 287 transitions. [2020-10-16 00:01:05,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 38 transitions, 122 flow [2020-10-16 00:01:05,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 00:01:05,543 INFO L241 Difference]: Finished difference. Result has 39 places, 36 transitions, 110 flow [2020-10-16 00:01:05,543 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2020-10-16 00:01:05,543 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2020-10-16 00:01:05,543 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 110 flow [2020-10-16 00:01:05,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:01:05,544 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:05,544 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:01:05,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 00:01:05,544 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 00:01:05,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:05,545 INFO L82 PathProgramCache]: Analyzing trace with hash -432337538, now seen corresponding path program 2 times [2020-10-16 00:01:05,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:05,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159938679] [2020-10-16 00:01:05,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:01:05,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159938679] [2020-10-16 00:01:05,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:05,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:01:05,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738437006] [2020-10-16 00:01:05,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:01:05,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:05,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:01:05,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:01:05,581 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 127 [2020-10-16 00:01:05,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 110 flow. Second operand 3 states. [2020-10-16 00:01:05,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:05,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 127 [2020-10-16 00:01:05,583 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:05,615 INFO L129 PetriNetUnfolder]: 32/106 cut-off events. [2020-10-16 00:01:05,615 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2020-10-16 00:01:05,616 INFO L80 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 106 events. 32/106 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 327 event pairs, 3 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 185. Up to 25 conditions per place. [2020-10-16 00:01:05,617 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2020-10-16 00:01:05,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 126 flow [2020-10-16 00:01:05,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:01:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:01:05,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2020-10-16 00:01:05,619 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7296587926509186 [2020-10-16 00:01:05,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2020-10-16 00:01:05,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2020-10-16 00:01:05,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:05,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2020-10-16 00:01:05,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:01:05,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:01:05,623 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:01:05,623 INFO L185 Difference]: Start difference. First operand has 39 places, 36 transitions, 110 flow. Second operand 3 states and 278 transitions. [2020-10-16 00:01:05,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 126 flow [2020-10-16 00:01:05,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 112 flow, removed 2 selfloop flow, removed 3 redundant places. [2020-10-16 00:01:05,625 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2020-10-16 00:01:05,626 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2020-10-16 00:01:05,626 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2020-10-16 00:01:05,626 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2020-10-16 00:01:05,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:01:05,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 00:01:05,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:01:05 BasicIcfg [2020-10-16 00:01:05,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 00:01:05,633 INFO L168 Benchmark]: Toolchain (without parser) took 3452.30 ms. Allocated memory was 248.5 MB in the beginning and 352.8 MB in the end (delta: 104.3 MB). Free memory was 204.2 MB in the beginning and 166.2 MB in the end (delta: 38.0 MB). Peak memory consumption was 142.3 MB. Max. memory is 14.2 GB. [2020-10-16 00:01:05,634 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 248.5 MB. Free memory is still 224.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 00:01:05,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 762.57 ms. Allocated memory was 248.5 MB in the beginning and 306.7 MB in the end (delta: 58.2 MB). Free memory was 204.2 MB in the beginning and 261.9 MB in the end (delta: -57.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.2 GB. [2020-10-16 00:01:05,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.15 ms. Allocated memory is still 306.7 MB. Free memory is still 261.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 00:01:05,637 INFO L168 Benchmark]: Boogie Preprocessor took 28.59 ms. Allocated memory is still 306.7 MB. Free memory was 261.9 MB in the beginning and 259.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:01:05,637 INFO L168 Benchmark]: RCFGBuilder took 440.54 ms. Allocated memory is still 306.7 MB. Free memory was 259.4 MB in the beginning and 237.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-16 00:01:05,638 INFO L168 Benchmark]: TraceAbstraction took 2168.96 ms. Allocated memory was 306.7 MB in the beginning and 352.8 MB in the end (delta: 46.1 MB). Free memory was 237.3 MB in the beginning and 166.2 MB in the end (delta: 71.1 MB). Peak memory consumption was 117.3 MB. Max. memory is 14.2 GB. [2020-10-16 00:01:05,643 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 248.5 MB. Free memory is still 224.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 762.57 ms. Allocated memory was 248.5 MB in the beginning and 306.7 MB in the end (delta: 58.2 MB). Free memory was 204.2 MB in the beginning and 261.9 MB in the end (delta: -57.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.15 ms. Allocated memory is still 306.7 MB. Free memory is still 261.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.59 ms. Allocated memory is still 306.7 MB. Free memory was 261.9 MB in the beginning and 259.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 440.54 ms. Allocated memory is still 306.7 MB. Free memory was 259.4 MB in the beginning and 237.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2168.96 ms. Allocated memory was 306.7 MB in the beginning and 352.8 MB in the end (delta: 46.1 MB). Free memory was 237.3 MB in the beginning and 166.2 MB in the end (delta: 71.1 MB). Peak memory consumption was 117.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 829 VarBasedMoverChecksPositive, 57 VarBasedMoverChecksNegative, 23 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 299 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 63 PlacesBefore, 35 PlacesAfterwards, 70 TransitionsBefore, 38 TransitionsAfterwards, 1428 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 5 ConcurrentYvCompositions, 4 ChoiceCompositions, 45 TotalNumberOfCompositions, 4482 MoverChecksTotal - PositiveResult [Line: 705]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 68 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 28 SDtfs, 8 SDslu, 0 SDs, 0 SdLazy, 30 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 494 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...