/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-wmm/safe003_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:36:56,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:36:56,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:36:56,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:36:56,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:36:56,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:36:56,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:36:56,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:36:56,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:36:56,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:36:56,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:36:56,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:36:56,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:36:56,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:36:56,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:36:56,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:36:56,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:36:56,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:36:56,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:36:56,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:36:56,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:36:56,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:36:56,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:36:56,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:36:56,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 01:36:56,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 01:36:56,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 01:36:56,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 01:36:56,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 01:36:56,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 01:36:56,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:36:56,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:36:56,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:36:56,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:36:56,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:36:56,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:36:56,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:36:56,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:36:56,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:36:56,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:36:56,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:36:56,341 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 01:36:56,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:36:56,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:36:56,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:36:56,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:36:56,365 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:36:56,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:36:56,365 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:36:56,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:36:56,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:36:56,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:36:56,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:36:56,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:36:56,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:36:56,366 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:36:56,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:36:56,367 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:36:56,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:36:56,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:36:56,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:36:56,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:36:56,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:36:56,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:36:56,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:36:56,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:36:56,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:36:56,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:36:56,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:36:56,369 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:36:56,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:36:56,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:36:56,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:36:56,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:36:56,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:36:56,693 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:36:56,694 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i [2020-10-16 01:36:56,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49c4f9179/a68fa5b3c72f4f74b12dc7943c83dd3e/FLAGdbb7229c4 [2020-10-16 01:36:57,357 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:36:57,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i [2020-10-16 01:36:57,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49c4f9179/a68fa5b3c72f4f74b12dc7943c83dd3e/FLAGdbb7229c4 [2020-10-16 01:36:57,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49c4f9179/a68fa5b3c72f4f74b12dc7943c83dd3e [2020-10-16 01:36:57,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:36:57,668 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:36:57,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:36:57,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:36:57,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:36:57,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:36:57" (1/1) ... [2020-10-16 01:36:57,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509e7905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:57, skipping insertion in model container [2020-10-16 01:36:57,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:36:57" (1/1) ... [2020-10-16 01:36:57,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:36:57,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:36:58,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:36:58,183 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:36:58,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:36:58,321 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:36:58,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:58 WrapperNode [2020-10-16 01:36:58,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:36:58,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:36:58,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:36:58,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:36:58,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:58" (1/1) ... [2020-10-16 01:36:58,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:58" (1/1) ... [2020-10-16 01:36:58,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:36:58,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:36:58,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:36:58,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:36:58,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:58" (1/1) ... [2020-10-16 01:36:58,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:58" (1/1) ... [2020-10-16 01:36:58,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:58" (1/1) ... [2020-10-16 01:36:58,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:58" (1/1) ... [2020-10-16 01:36:58,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:58" (1/1) ... [2020-10-16 01:36:58,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:58" (1/1) ... [2020-10-16 01:36:58,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:58" (1/1) ... [2020-10-16 01:36:58,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:36:58,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:36:58,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:36:58,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:36:58,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:58" (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 01:36:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:36:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:36:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:36:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:36:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:36:58,500 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:36:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:36:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:36:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:36:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:36:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:36:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:36:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:36:58,508 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 01:36:58,928 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:36:58,928 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:36:58,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:36:58 BoogieIcfgContainer [2020-10-16 01:36:58,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:36:58,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:36:58,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:36:58,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:36:58,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:36:57" (1/3) ... [2020-10-16 01:36:58,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89f91e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:36:58, skipping insertion in model container [2020-10-16 01:36:58,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:58" (2/3) ... [2020-10-16 01:36:58,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89f91e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:36:58, skipping insertion in model container [2020-10-16 01:36:58,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:36:58" (3/3) ... [2020-10-16 01:36:58,939 INFO L111 eAbstractionObserver]: Analyzing ICFG safe003_tso.opt.i [2020-10-16 01:36:58,950 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:36:58,957 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:36:58,957 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:36:58,983 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,983 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,984 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,984 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,987 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,987 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,988 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,988 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,988 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,988 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,989 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,989 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,990 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,990 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,992 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,993 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:58,999 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:59,000 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:59,000 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:59,001 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:59,012 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:59,012 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:59,013 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:59,013 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:59,022 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:59,022 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:59,022 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:59,022 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:36:59,040 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:36:59,058 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:36:59,058 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:36:59,058 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:36:59,058 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:36:59,059 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:36:59,059 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:36:59,059 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:36:59,059 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:36:59,071 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:36:59,112 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 01:36:59,112 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:36:59,118 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 01:36:59,118 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:36:59,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 01:36:59,127 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:36:59,130 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:36:59,132 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:36:59,132 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 01:36:59,152 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 01:36:59,152 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:36:59,153 INFO L80 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 56 events. 1/56 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. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:36:59,155 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:37:00,515 INFO L132 LiptonReduction]: Checked pairs total: 1702 [2020-10-16 01:37:00,515 INFO L134 LiptonReduction]: Total number of compositions: 41 [2020-10-16 01:37:00,518 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1393 [2020-10-16 01:37:00,527 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2020-10-16 01:37:00,527 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:00,528 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:00,529 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:00,529 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:00,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:00,535 INFO L82 PathProgramCache]: Analyzing trace with hash 967519021, now seen corresponding path program 1 times [2020-10-16 01:37:00,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:00,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308534432] [2020-10-16 01:37:00,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:00,759 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 01:37:00,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308534432] [2020-10-16 01:37:00,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:00,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:37:00,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110366919] [2020-10-16 01:37:00,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:37:00,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:00,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:37:00,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:37:00,798 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 111 [2020-10-16 01:37:00,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 01:37:00,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:00,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 111 [2020-10-16 01:37:00,802 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:00,825 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:37:00,826 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:37:00,826 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:37:00,827 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 01:37:00,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 01:37:00,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:37:00,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:37:00,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 01:37:00,845 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8678678678678678 [2020-10-16 01:37:00,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 01:37:00,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 01:37:00,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:00,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 01:37:00,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:37:00,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:37:00,863 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:37:00,866 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 289 transitions. [2020-10-16 01:37:00,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 01:37:00,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:37:00,873 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 01:37:00,876 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 01:37:00,877 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:37:00,877 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 01:37:00,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:37:00,878 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:00,878 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:00,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:37:00,878 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:00,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:00,879 INFO L82 PathProgramCache]: Analyzing trace with hash -71690202, now seen corresponding path program 1 times [2020-10-16 01:37:00,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:00,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424777787] [2020-10-16 01:37:00,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:00,960 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 01:37:00,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424777787] [2020-10-16 01:37:00,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:00,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:00,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132479582] [2020-10-16 01:37:00,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:00,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:00,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:00,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:00,966 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2020-10-16 01:37:00,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states. [2020-10-16 01:37:00,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:00,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2020-10-16 01:37:00,967 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:01,019 INFO L129 PetriNetUnfolder]: 17/64 cut-off events. [2020-10-16 01:37:01,020 INFO L130 PetriNetUnfolder]: For 15/19 co-relation queries the response was YES. [2020-10-16 01:37:01,021 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 64 events. 17/64 cut-off events. For 15/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 230 event pairs, 3 based on Foata normal form. 9/72 useless extension candidates. Maximal degree in co-relation 120. Up to 24 conditions per place. [2020-10-16 01:37:01,022 INFO L132 encePairwiseOnDemand]: 106/111 looper letters, 6 selfloop transitions, 4 changer transitions 3/24 dead transitions. [2020-10-16 01:37:01,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 91 flow [2020-10-16 01:37:01,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:37:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:37:01,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2020-10-16 01:37:01,026 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8175675675675675 [2020-10-16 01:37:01,027 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 363 transitions. [2020-10-16 01:37:01,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 363 transitions. [2020-10-16 01:37:01,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:01,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 363 transitions. [2020-10-16 01:37:01,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:37:01,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:37:01,032 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:37:01,032 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 363 transitions. [2020-10-16 01:37:01,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 91 flow [2020-10-16 01:37:01,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 85 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:37:01,034 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 70 flow [2020-10-16 01:37:01,035 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2020-10-16 01:37:01,035 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 01:37:01,036 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 70 flow [2020-10-16 01:37:01,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:01,036 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:01,036 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:01,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:37:01,037 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:01,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:01,037 INFO L82 PathProgramCache]: Analyzing trace with hash 2072145179, now seen corresponding path program 1 times [2020-10-16 01:37:01,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:01,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241620329] [2020-10-16 01:37:01,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:01,095 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 01:37:01,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241620329] [2020-10-16 01:37:01,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:01,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:37:01,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637496829] [2020-10-16 01:37:01,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:01,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:01,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:01,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:01,100 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2020-10-16 01:37:01,100 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 70 flow. Second operand 4 states. [2020-10-16 01:37:01,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:01,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2020-10-16 01:37:01,101 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:01,172 INFO L129 PetriNetUnfolder]: 8/52 cut-off events. [2020-10-16 01:37:01,173 INFO L130 PetriNetUnfolder]: For 55/61 co-relation queries the response was YES. [2020-10-16 01:37:01,174 INFO L80 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 52 events. 8/52 cut-off events. For 55/61 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 179 event pairs, 0 based on Foata normal form. 8/60 useless extension candidates. Maximal degree in co-relation 124. Up to 17 conditions per place. [2020-10-16 01:37:01,174 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 7 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2020-10-16 01:37:01,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 128 flow [2020-10-16 01:37:01,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:37:01,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:37:01,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 451 transitions. [2020-10-16 01:37:01,177 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8126126126126126 [2020-10-16 01:37:01,177 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 451 transitions. [2020-10-16 01:37:01,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 451 transitions. [2020-10-16 01:37:01,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:01,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 451 transitions. [2020-10-16 01:37:01,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:37:01,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:37:01,182 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:37:01,182 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 70 flow. Second operand 5 states and 451 transitions. [2020-10-16 01:37:01,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 128 flow [2020-10-16 01:37:01,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 117 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 01:37:01,184 INFO L241 Difference]: Finished difference. Result has 36 places, 21 transitions, 99 flow [2020-10-16 01:37:01,184 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=21} [2020-10-16 01:37:01,185 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 01:37:01,185 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 21 transitions, 99 flow [2020-10-16 01:37:01,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:01,185 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:01,185 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:01,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:37:01,186 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:01,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:01,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1030496859, now seen corresponding path program 1 times [2020-10-16 01:37:01,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:01,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895035778] [2020-10-16 01:37:01,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:01,244 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 01:37:01,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895035778] [2020-10-16 01:37:01,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:01,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:37:01,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471015936] [2020-10-16 01:37:01,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:37:01,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:01,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:37:01,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:37:01,248 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 111 [2020-10-16 01:37:01,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 21 transitions, 99 flow. Second operand 3 states. [2020-10-16 01:37:01,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:01,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 111 [2020-10-16 01:37:01,248 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:01,260 INFO L129 PetriNetUnfolder]: 2/31 cut-off events. [2020-10-16 01:37:01,260 INFO L130 PetriNetUnfolder]: For 71/74 co-relation queries the response was YES. [2020-10-16 01:37:01,261 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 31 events. 2/31 cut-off events. For 71/74 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 68 event pairs, 0 based on Foata normal form. 3/34 useless extension candidates. Maximal degree in co-relation 72. Up to 10 conditions per place. [2020-10-16 01:37:01,261 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 2 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2020-10-16 01:37:01,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 21 transitions, 107 flow [2020-10-16 01:37:01,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:37:01,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:37:01,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2020-10-16 01:37:01,264 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8768768768768769 [2020-10-16 01:37:01,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2020-10-16 01:37:01,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2020-10-16 01:37:01,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:01,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2020-10-16 01:37:01,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:37:01,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:37:01,266 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:37:01,267 INFO L185 Difference]: Start difference. First operand has 36 places, 21 transitions, 99 flow. Second operand 3 states and 292 transitions. [2020-10-16 01:37:01,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 21 transitions, 107 flow [2020-10-16 01:37:01,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 21 transitions, 89 flow, removed 5 selfloop flow, removed 4 redundant places. [2020-10-16 01:37:01,269 INFO L241 Difference]: Finished difference. Result has 33 places, 21 transitions, 91 flow [2020-10-16 01:37:01,269 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2020-10-16 01:37:01,270 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 01:37:01,270 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 91 flow [2020-10-16 01:37:01,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:37:01,270 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:01,270 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:01,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:37:01,271 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:01,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:01,271 INFO L82 PathProgramCache]: Analyzing trace with hash -871881703, now seen corresponding path program 1 times [2020-10-16 01:37:01,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:01,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226969204] [2020-10-16 01:37:01,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:01,315 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 01:37:01,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226969204] [2020-10-16 01:37:01,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:01,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:01,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058180532] [2020-10-16 01:37:01,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:37:01,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:01,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:37:01,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:37:01,319 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 111 [2020-10-16 01:37:01,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 91 flow. Second operand 4 states. [2020-10-16 01:37:01,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:01,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 111 [2020-10-16 01:37:01,320 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:01,343 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2020-10-16 01:37:01,343 INFO L130 PetriNetUnfolder]: For 62/64 co-relation queries the response was YES. [2020-10-16 01:37:01,343 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 36 events. 0/36 cut-off events. For 62/64 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 108 event pairs, 0 based on Foata normal form. 5/41 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2020-10-16 01:37:01,344 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 1 selfloop transitions, 3 changer transitions 3/20 dead transitions. [2020-10-16 01:37:01,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 20 transitions, 91 flow [2020-10-16 01:37:01,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:37:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:37:01,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2020-10-16 01:37:01,346 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8445945945945946 [2020-10-16 01:37:01,346 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2020-10-16 01:37:01,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2020-10-16 01:37:01,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:01,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2020-10-16 01:37:01,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:37:01,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:37:01,349 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:37:01,349 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 91 flow. Second operand 4 states and 375 transitions. [2020-10-16 01:37:01,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 20 transitions, 91 flow [2020-10-16 01:37:01,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 20 transitions, 83 flow, removed 1 selfloop flow, removed 3 redundant places. [2020-10-16 01:37:01,351 INFO L241 Difference]: Finished difference. Result has 35 places, 17 transitions, 74 flow [2020-10-16 01:37:01,352 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=17} [2020-10-16 01:37:01,352 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2020-10-16 01:37:01,352 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 17 transitions, 74 flow [2020-10-16 01:37:01,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:37:01,352 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:37:01,353 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:37:01,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:37:01,353 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:37:01,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:37:01,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1468898697, now seen corresponding path program 1 times [2020-10-16 01:37:01,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:37:01,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415467917] [2020-10-16 01:37:01,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:37:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:37:01,385 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 01:37:01,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415467917] [2020-10-16 01:37:01,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:37:01,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:37:01,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676770149] [2020-10-16 01:37:01,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:37:01,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:37:01,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:37:01,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:37:01,388 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 111 [2020-10-16 01:37:01,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 17 transitions, 74 flow. Second operand 3 states. [2020-10-16 01:37:01,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:37:01,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 111 [2020-10-16 01:37:01,389 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:37:01,399 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2020-10-16 01:37:01,399 INFO L130 PetriNetUnfolder]: For 17/19 co-relation queries the response was YES. [2020-10-16 01:37:01,400 INFO L80 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 16 events. 0/16 cut-off events. For 17/19 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:37:01,400 INFO L132 encePairwiseOnDemand]: 109/111 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2020-10-16 01:37:01,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 16 transitions, 72 flow [2020-10-16 01:37:01,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:37:01,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:37:01,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2020-10-16 01:37:01,402 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2020-10-16 01:37:01,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2020-10-16 01:37:01,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2020-10-16 01:37:01,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:37:01,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2020-10-16 01:37:01,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:37:01,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:37:01,404 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:37:01,405 INFO L185 Difference]: Start difference. First operand has 35 places, 17 transitions, 74 flow. Second operand 3 states and 279 transitions. [2020-10-16 01:37:01,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 16 transitions, 72 flow [2020-10-16 01:37:01,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 56 flow, removed 0 selfloop flow, removed 8 redundant places. [2020-10-16 01:37:01,406 INFO L241 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2020-10-16 01:37:01,406 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2020-10-16 01:37:01,406 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 01:37:01,407 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2020-10-16 01:37:01,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:37:01,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:37:01,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:37:01 BasicIcfg [2020-10-16 01:37:01,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:37:01,414 INFO L168 Benchmark]: Toolchain (without parser) took 3745.35 ms. Allocated memory was 253.8 MB in the beginning and 371.2 MB in the end (delta: 117.4 MB). Free memory was 208.5 MB in the beginning and 299.6 MB in the end (delta: -91.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:01,415 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 253.8 MB. Free memory was 231.8 MB in the beginning and 231.0 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-16 01:37:01,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.95 ms. Allocated memory was 253.8 MB in the beginning and 319.8 MB in the end (delta: 66.1 MB). Free memory was 207.6 MB in the beginning and 273.2 MB in the end (delta: -65.6 MB). Peak memory consumption was 29.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:01,417 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.52 ms. Allocated memory is still 319.8 MB. Free memory was 273.2 MB in the beginning and 271.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:01,418 INFO L168 Benchmark]: Boogie Preprocessor took 29.18 ms. Allocated memory is still 319.8 MB. Free memory was 271.5 MB in the beginning and 269.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:01,418 INFO L168 Benchmark]: RCFGBuilder took 494.05 ms. Allocated memory is still 319.8 MB. Free memory was 269.8 MB in the beginning and 247.0 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:37:01,419 INFO L168 Benchmark]: TraceAbstraction took 2479.51 ms. Allocated memory was 319.8 MB in the beginning and 371.2 MB in the end (delta: 51.4 MB). Free memory was 246.2 MB in the beginning and 299.6 MB in the end (delta: -53.4 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:37:01,423 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 253.8 MB. Free memory was 231.8 MB in the beginning and 231.0 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 653.95 ms. Allocated memory was 253.8 MB in the beginning and 319.8 MB in the end (delta: 66.1 MB). Free memory was 207.6 MB in the beginning and 273.2 MB in the end (delta: -65.6 MB). Peak memory consumption was 29.5 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 82.52 ms. Allocated memory is still 319.8 MB. Free memory was 273.2 MB in the beginning and 271.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.18 ms. Allocated memory is still 319.8 MB. Free memory was 271.5 MB in the beginning and 269.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 494.05 ms. Allocated memory is still 319.8 MB. Free memory was 269.8 MB in the beginning and 247.0 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2479.51 ms. Allocated memory was 319.8 MB in the beginning and 371.2 MB in the end (delta: 51.4 MB). Free memory was 246.2 MB in the beginning and 299.6 MB in the end (delta: -53.4 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 560 VarBasedMoverChecksPositive, 52 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 45 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1702 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 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: 2.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 24 SDtfs, 13 SDslu, 8 SDs, 0 SdLazy, 38 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=3, 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, 0.2s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 1594 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...