/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-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:03:36,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:03:36,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:03:36,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:03:36,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:03:36,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:03:36,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:03:36,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:03:36,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:03:36,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:03:36,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:03:36,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:03:36,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:03:36,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:03:36,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:03:36,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:03:36,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:03:36,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:03:36,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:03:36,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:03:36,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:03:36,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:03:36,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:03:36,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:03:36,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 05:03:36,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:03:36,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:03:36,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:03:36,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:03:36,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:03:36,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:03:36,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:03:36,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:03:36,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:03:36,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:03:36,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:03:36,269 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-SemanticLooper.epf [2020-10-16 05:03:36,312 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:03:36,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:03:36,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:03:36,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:03:36,314 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:03:36,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:03:36,315 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:03:36,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:03:36,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:03:36,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:03:36,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:03:36,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:03:36,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:03:36,317 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:03:36,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:03:36,318 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:03:36,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:03:36,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:03:36,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:03:36,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:03:36,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:03:36,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:03:36,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:03:36,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:03:36,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:03:36,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:03:36,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:03:36,320 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:03:36,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:03:36,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:03:36,660 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:03:36,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:03:36,668 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:03:36,669 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:03:36,669 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i [2020-10-16 05:03:36,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2add2ae5/c693c9b9573e4f059d4904c6cdf73cd7/FLAG96c8804c7 [2020-10-16 05:03:37,265 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:03:37,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i [2020-10-16 05:03:37,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2add2ae5/c693c9b9573e4f059d4904c6cdf73cd7/FLAG96c8804c7 [2020-10-16 05:03:37,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2add2ae5/c693c9b9573e4f059d4904c6cdf73cd7 [2020-10-16 05:03:37,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:03:37,628 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:03:37,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:03:37,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:03:37,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:03:37,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:03:37" (1/1) ... [2020-10-16 05:03:37,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75640a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:37, skipping insertion in model container [2020-10-16 05:03:37,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:03:37" (1/1) ... [2020-10-16 05:03:37,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:03:37,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:03:38,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:03:38,241 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:03:38,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:03:38,390 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:03:38,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:38 WrapperNode [2020-10-16 05:03:38,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:03:38,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:03:38,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:03:38,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:03:38,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:38" (1/1) ... [2020-10-16 05:03:38,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:38" (1/1) ... [2020-10-16 05:03:38,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:03:38,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:03:38,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:03:38,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:03:38,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:38" (1/1) ... [2020-10-16 05:03:38,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:38" (1/1) ... [2020-10-16 05:03:38,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:38" (1/1) ... [2020-10-16 05:03:38,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:38" (1/1) ... [2020-10-16 05:03:38,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:38" (1/1) ... [2020-10-16 05:03:38,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:38" (1/1) ... [2020-10-16 05:03:38,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:38" (1/1) ... [2020-10-16 05:03:38,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:03:38,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:03:38,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:03:38,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:03:38,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:38" (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 05:03:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:03:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:03:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:03:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:03:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:03:38,537 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:03:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:03:38,537 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:03:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:03:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:03:38,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:03:38,540 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 05:03:38,850 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:03:38,851 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:03:38,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:03:38 BoogieIcfgContainer [2020-10-16 05:03:38,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:03:38,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:03:38,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:03:38,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:03:38,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:03:37" (1/3) ... [2020-10-16 05:03:38,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50fb0e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:03:38, skipping insertion in model container [2020-10-16 05:03:38,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:38" (2/3) ... [2020-10-16 05:03:38,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50fb0e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:03:38, skipping insertion in model container [2020-10-16 05:03:38,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:03:38" (3/3) ... [2020-10-16 05:03:38,882 INFO L111 eAbstractionObserver]: Analyzing ICFG safe010_tso.opt.i [2020-10-16 05:03:38,891 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:03:38,897 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:03:38,898 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:03:38,923 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,924 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,924 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,924 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,925 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,925 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,926 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,926 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,926 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,926 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,927 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,927 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,931 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,931 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,932 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,932 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,939 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:38,957 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 05:03:38,977 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:03:38,977 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:03:38,977 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:03:38,977 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:03:38,977 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:03:38,978 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:03:38,978 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:03:38,978 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:03:38,990 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-10-16 05:03:39,027 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-10-16 05:03:39,028 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:03:39,032 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-16 05:03:39,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 55 transitions, 120 flow [2020-10-16 05:03:39,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 44 transitions, 94 flow [2020-10-16 05:03:39,041 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:03:39,044 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 44 transitions, 94 flow [2020-10-16 05:03:39,047 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 44 transitions, 94 flow [2020-10-16 05:03:39,048 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 50 places, 44 transitions, 94 flow [2020-10-16 05:03:39,068 INFO L129 PetriNetUnfolder]: 1/44 cut-off events. [2020-10-16 05:03:39,068 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:03:39,068 INFO L80 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2020-10-16 05:03:39,070 INFO L117 LiptonReduction]: Number of co-enabled transitions 456 [2020-10-16 05:03:40,114 INFO L132 LiptonReduction]: Checked pairs total: 792 [2020-10-16 05:03:40,114 INFO L134 LiptonReduction]: Total number of compositions: 36 [2020-10-16 05:03:40,117 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1078 [2020-10-16 05:03:40,124 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2020-10-16 05:03:40,125 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:03:40,125 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:03:40,126 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 05:03:40,126 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:03:40,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:03:40,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1556684255, now seen corresponding path program 1 times [2020-10-16 05:03:40,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:03:40,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604295654] [2020-10-16 05:03:40,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:03:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:03:40,360 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 05:03:40,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604295654] [2020-10-16 05:03:40,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:03:40,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:03:40,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449663943] [2020-10-16 05:03:40,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:03:40,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:03:40,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:03:40,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:03:40,392 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2020-10-16 05:03:40,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand 3 states. [2020-10-16 05:03:40,395 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:03:40,395 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2020-10-16 05:03:40,397 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:03:40,421 INFO L129 PetriNetUnfolder]: 3/20 cut-off events. [2020-10-16 05:03:40,421 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:03:40,421 INFO L80 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 20 events. 3/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 1 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 29. Up to 10 conditions per place. [2020-10-16 05:03:40,423 INFO L132 encePairwiseOnDemand]: 86/91 looper letters, 3 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2020-10-16 05:03:40,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 46 flow [2020-10-16 05:03:40,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:03:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:03:40,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2020-10-16 05:03:40,440 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7802197802197802 [2020-10-16 05:03:40,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 213 transitions. [2020-10-16 05:03:40,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 213 transitions. [2020-10-16 05:03:40,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:03:40,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 213 transitions. [2020-10-16 05:03:40,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:03:40,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:03:40,456 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:03:40,459 INFO L185 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 3 states and 213 transitions. [2020-10-16 05:03:40,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 46 flow [2020-10-16 05:03:40,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 14 transitions, 44 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:03:40,466 INFO L241 Difference]: Finished difference. Result has 20 places, 14 transitions, 47 flow [2020-10-16 05:03:40,469 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2020-10-16 05:03:40,470 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2020-10-16 05:03:40,470 INFO L481 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 47 flow [2020-10-16 05:03:40,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:03:40,471 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:03:40,471 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:03:40,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:03:40,471 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:03:40,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:03:40,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1896743154, now seen corresponding path program 1 times [2020-10-16 05:03:40,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:03:40,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409139698] [2020-10-16 05:03:40,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:03:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:03:40,538 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 05:03:40,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409139698] [2020-10-16 05:03:40,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:03:40,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:03:40,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185438504] [2020-10-16 05:03:40,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:03:40,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:03:40,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:03:40,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:03:40,547 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2020-10-16 05:03:40,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 47 flow. Second operand 4 states. [2020-10-16 05:03:40,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:03:40,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2020-10-16 05:03:40,548 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:03:40,585 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2020-10-16 05:03:40,585 INFO L130 PetriNetUnfolder]: For 3/5 co-relation queries the response was YES. [2020-10-16 05:03:40,586 INFO L80 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 14 events. 1/14 cut-off events. For 3/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 4/18 useless extension candidates. Maximal degree in co-relation 26. Up to 6 conditions per place. [2020-10-16 05:03:40,587 INFO L132 encePairwiseOnDemand]: 87/91 looper letters, 1 selfloop transitions, 5 changer transitions 0/14 dead transitions. [2020-10-16 05:03:40,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 14 transitions, 59 flow [2020-10-16 05:03:40,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:03:40,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:03:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 279 transitions. [2020-10-16 05:03:40,592 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7664835164835165 [2020-10-16 05:03:40,593 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 279 transitions. [2020-10-16 05:03:40,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 279 transitions. [2020-10-16 05:03:40,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:03:40,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 279 transitions. [2020-10-16 05:03:40,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:03:40,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:03:40,600 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:03:40,600 INFO L185 Difference]: Start difference. First operand has 20 places, 14 transitions, 47 flow. Second operand 4 states and 279 transitions. [2020-10-16 05:03:40,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 14 transitions, 59 flow [2020-10-16 05:03:40,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 14 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:03:40,603 INFO L241 Difference]: Finished difference. Result has 23 places, 14 transitions, 60 flow [2020-10-16 05:03:40,603 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=23, PETRI_TRANSITIONS=14} [2020-10-16 05:03:40,604 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2020-10-16 05:03:40,604 INFO L481 AbstractCegarLoop]: Abstraction has has 23 places, 14 transitions, 60 flow [2020-10-16 05:03:40,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:03:40,604 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:03:40,604 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:03:40,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:03:40,605 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:03:40,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:03:40,605 INFO L82 PathProgramCache]: Analyzing trace with hash 541388174, now seen corresponding path program 1 times [2020-10-16 05:03:40,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:03:40,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413711919] [2020-10-16 05:03:40,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:03:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:03:40,701 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 05:03:40,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413711919] [2020-10-16 05:03:40,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:03:40,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:03:40,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155290079] [2020-10-16 05:03:40,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:03:40,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:03:40,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:03:40,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:03:40,705 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2020-10-16 05:03:40,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 14 transitions, 60 flow. Second operand 3 states. [2020-10-16 05:03:40,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:03:40,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2020-10-16 05:03:40,706 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:03:40,724 INFO L129 PetriNetUnfolder]: 2/22 cut-off events. [2020-10-16 05:03:40,725 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-16 05:03:40,725 INFO L80 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 22 events. 2/22 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 51. Up to 11 conditions per place. [2020-10-16 05:03:40,725 INFO L132 encePairwiseOnDemand]: 88/91 looper letters, 2 selfloop transitions, 2 changer transitions 1/15 dead transitions. [2020-10-16 05:03:40,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 15 transitions, 72 flow [2020-10-16 05:03:40,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:03:40,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:03:40,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2020-10-16 05:03:40,728 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8131868131868132 [2020-10-16 05:03:40,729 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2020-10-16 05:03:40,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2020-10-16 05:03:40,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:03:40,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2020-10-16 05:03:40,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:03:40,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:03:40,731 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:03:40,731 INFO L185 Difference]: Start difference. First operand has 23 places, 14 transitions, 60 flow. Second operand 3 states and 222 transitions. [2020-10-16 05:03:40,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 15 transitions, 72 flow [2020-10-16 05:03:40,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 15 transitions, 62 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 05:03:40,733 INFO L241 Difference]: Finished difference. Result has 24 places, 14 transitions, 58 flow [2020-10-16 05:03:40,734 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2020-10-16 05:03:40,734 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2020-10-16 05:03:40,734 INFO L481 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 58 flow [2020-10-16 05:03:40,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:03:40,734 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:03:40,734 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:03:40,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:03:40,735 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:03:40,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:03:40,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1187053268, now seen corresponding path program 2 times [2020-10-16 05:03:40,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:03:40,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273609000] [2020-10-16 05:03:40,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:03:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:03:40,775 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 05:03:40,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273609000] [2020-10-16 05:03:40,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:03:40,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:03:40,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412237270] [2020-10-16 05:03:40,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:03:40,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:03:40,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:03:40,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:03:40,779 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2020-10-16 05:03:40,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 58 flow. Second operand 4 states. [2020-10-16 05:03:40,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:03:40,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2020-10-16 05:03:40,779 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:03:40,796 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2020-10-16 05:03:40,797 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2020-10-16 05:03:40,797 INFO L80 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 13 events. 1/13 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 26. Up to 4 conditions per place. [2020-10-16 05:03:40,797 INFO L132 encePairwiseOnDemand]: 88/91 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2020-10-16 05:03:40,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 13 transitions, 60 flow [2020-10-16 05:03:40,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:03:40,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:03:40,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2020-10-16 05:03:40,800 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7582417582417582 [2020-10-16 05:03:40,800 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 276 transitions. [2020-10-16 05:03:40,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 276 transitions. [2020-10-16 05:03:40,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:03:40,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 276 transitions. [2020-10-16 05:03:40,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:03:40,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:03:40,803 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:03:40,803 INFO L185 Difference]: Start difference. First operand has 24 places, 14 transitions, 58 flow. Second operand 4 states and 276 transitions. [2020-10-16 05:03:40,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 13 transitions, 60 flow [2020-10-16 05:03:40,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 13 transitions, 54 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:03:40,804 INFO L241 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2020-10-16 05:03:40,804 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2020-10-16 05:03:40,805 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2020-10-16 05:03:40,805 INFO L481 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2020-10-16 05:03:40,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:03:40,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:03:40,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:03:40 BasicIcfg [2020-10-16 05:03:40,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:03:40,813 INFO L168 Benchmark]: Toolchain (without parser) took 3183.35 ms. Allocated memory was 248.0 MB in the beginning and 351.8 MB in the end (delta: 103.8 MB). Free memory was 202.5 MB in the beginning and 202.5 MB in the end (delta: -45.5 kB). Peak memory consumption was 103.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:03:40,813 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 248.0 MB. Free memory is still 224.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:03:40,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 761.67 ms. Allocated memory was 248.0 MB in the beginning and 299.9 MB in the end (delta: 51.9 MB). Free memory was 202.5 MB in the beginning and 253.3 MB in the end (delta: -50.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:03:40,815 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.76 ms. Allocated memory is still 299.9 MB. Free memory was 253.3 MB in the beginning and 250.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:03:40,816 INFO L168 Benchmark]: Boogie Preprocessor took 26.19 ms. Allocated memory is still 299.9 MB. Free memory is still 250.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:03:40,816 INFO L168 Benchmark]: RCFGBuilder took 387.86 ms. Allocated memory is still 299.9 MB. Free memory was 250.8 MB in the beginning and 228.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:03:40,817 INFO L168 Benchmark]: TraceAbstraction took 1939.65 ms. Allocated memory was 299.9 MB in the beginning and 351.8 MB in the end (delta: 51.9 MB). Free memory was 228.9 MB in the beginning and 202.5 MB in the end (delta: 26.4 MB). Peak memory consumption was 78.3 MB. Max. memory is 14.2 GB. [2020-10-16 05:03:40,821 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 248.0 MB. Free memory is still 224.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 761.67 ms. Allocated memory was 248.0 MB in the beginning and 299.9 MB in the end (delta: 51.9 MB). Free memory was 202.5 MB in the beginning and 253.3 MB in the end (delta: -50.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.76 ms. Allocated memory is still 299.9 MB. Free memory was 253.3 MB in the beginning and 250.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.19 ms. Allocated memory is still 299.9 MB. Free memory is still 250.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 387.86 ms. Allocated memory is still 299.9 MB. Free memory was 250.8 MB in the beginning and 228.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 1939.65 ms. Allocated memory was 299.9 MB in the beginning and 351.8 MB in the end (delta: 51.9 MB). Free memory was 228.9 MB in the beginning and 202.5 MB in the end (delta: 26.4 MB). Peak memory consumption was 78.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 310 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 29 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 50 PlacesBefore, 19 PlacesAfterwards, 44 TransitionsBefore, 13 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 36 TotalNumberOfCompositions, 792 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 3 procedures, 54 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: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 19 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=2, 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 791 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...