/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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 17:48:38,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 17:48:38,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 17:48:38,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 17:48:38,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 17:48:38,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 17:48:38,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 17:48:38,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 17:48:38,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 17:48:38,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 17:48:38,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 17:48:38,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 17:48:38,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 17:48:38,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 17:48:38,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 17:48:38,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 17:48:38,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 17:48:38,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 17:48:38,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 17:48:38,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 17:48:38,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 17:48:38,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 17:48:38,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 17:48:38,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 17:48:38,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 17:48:38,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 17:48:38,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 17:48:38,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 17:48:38,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 17:48:38,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 17:48:38,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 17:48:38,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 17:48:38,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 17:48:38,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 17:48:38,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 17:48:38,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 17:48:38,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 17:48:38,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 17:48:38,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 17:48:38,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 17:48:38,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 17:48:38,346 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 17:48:38,385 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 17:48:38,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 17:48:38,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 17:48:38,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 17:48:38,388 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 17:48:38,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 17:48:38,388 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 17:48:38,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 17:48:38,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 17:48:38,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 17:48:38,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 17:48:38,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 17:48:38,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 17:48:38,390 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 17:48:38,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 17:48:38,391 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 17:48:38,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 17:48:38,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 17:48:38,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 17:48:38,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 17:48:38,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 17:48:38,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 17:48:38,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 17:48:38,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 17:48:38,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 17:48:38,393 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 17:48:38,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 17:48:38,394 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 17:48:38,394 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 17:48:38,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 17:48:38,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 17:48:38,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 17:48:38,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 17:48:38,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 17:48:38,693 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 17:48:38,694 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2020-10-09 17:48:38,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f48665c/d00bc24171b040ff95e0dbdb58d1d1df/FLAG70197b332 [2020-10-09 17:48:39,296 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 17:48:39,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2020-10-09 17:48:39,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f48665c/d00bc24171b040ff95e0dbdb58d1d1df/FLAG70197b332 [2020-10-09 17:48:39,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7f48665c/d00bc24171b040ff95e0dbdb58d1d1df [2020-10-09 17:48:39,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 17:48:39,669 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 17:48:39,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 17:48:39,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 17:48:39,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 17:48:39,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:48:39" (1/1) ... [2020-10-09 17:48:39,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3230f92b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:48:39, skipping insertion in model container [2020-10-09 17:48:39,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:48:39" (1/1) ... [2020-10-09 17:48:39,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 17:48:39,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 17:48:40,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:48:40,252 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 17:48:40,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:48:40,412 INFO L208 MainTranslator]: Completed translation [2020-10-09 17:48:40,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:48:40 WrapperNode [2020-10-09 17:48:40,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 17:48:40,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 17:48:40,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 17:48:40,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 17:48:40,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:48:40" (1/1) ... [2020-10-09 17:48:40,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:48:40" (1/1) ... [2020-10-09 17:48:40,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 17:48:40,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 17:48:40,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 17:48:40,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 17:48:40,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:48:40" (1/1) ... [2020-10-09 17:48:40,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:48:40" (1/1) ... [2020-10-09 17:48:40,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:48:40" (1/1) ... [2020-10-09 17:48:40,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:48:40" (1/1) ... [2020-10-09 17:48:40,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:48:40" (1/1) ... [2020-10-09 17:48:40,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:48:40" (1/1) ... [2020-10-09 17:48:40,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:48:40" (1/1) ... [2020-10-09 17:48:40,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 17:48:40,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 17:48:40,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 17:48:40,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 17:48:40,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:48:40" (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 [2020-10-09 17:48:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 17:48:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 17:48:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 17:48:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 17:48:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 17:48:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 17:48:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 17:48:40,558 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 17:48:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 17:48:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 17:48:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 17:48:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 17:48:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 17:48:40,561 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 17:48:40,912 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 17:48:40,913 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 17:48:40,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:48:40 BoogieIcfgContainer [2020-10-09 17:48:40,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 17:48:40,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 17:48:40,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 17:48:40,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 17:48:40,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 05:48:39" (1/3) ... [2020-10-09 17:48:40,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdbdf84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:48:40, skipping insertion in model container [2020-10-09 17:48:40,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:48:40" (2/3) ... [2020-10-09 17:48:40,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdbdf84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:48:40, skipping insertion in model container [2020-10-09 17:48:40,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:48:40" (3/3) ... [2020-10-09 17:48:40,924 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.opt.i [2020-10-09 17:48:40,936 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 17:48:40,944 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 17:48:40,945 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 17:48:40,969 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,970 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,970 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,970 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,971 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,971 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,972 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,972 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,972 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,972 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,973 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,973 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,973 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,974 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,974 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,974 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,975 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,975 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,979 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,979 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,979 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,979 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,987 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,987 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,988 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,988 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,990 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,990 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,991 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:40,991 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:48:41,009 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-09 17:48:41,034 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 17:48:41,034 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 17:48:41,035 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 17:48:41,035 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 17:48:41,035 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 17:48:41,035 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 17:48:41,035 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 17:48:41,035 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 17:48:41,051 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-09 17:48:41,095 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-09 17:48:41,095 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:48:41,101 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 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. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-09 17:48:41,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-09 17:48:41,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-09 17:48:41,126 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2020-10-09 17:48:41,127 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:48:41,127 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:48:41,128 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:48:41,128 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:48:41,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:48:41,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1246835585, now seen corresponding path program 1 times [2020-10-09 17:48:41,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:48:41,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261277357] [2020-10-09 17:48:41,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 17:48:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:48:41,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:48:41,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:48:41,367 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:48:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:48:41,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:48:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:48:41,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261277357] [2020-10-09 17:48:41,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:48:41,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:48:41,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057959008] [2020-10-09 17:48:41,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:48:41,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:48:41,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:48:41,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:48:41,770 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 69 [2020-10-09 17:48:41,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 119 flow. Second operand 8 states. [2020-10-09 17:48:41,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:48:41,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 69 [2020-10-09 17:48:41,775 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:48:41,883 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-10-09 17:48:41,884 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:48:41,884 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 4/80 useless extension candidates. Maximal degree in co-relation 82. Up to 7 conditions per place. [2020-10-09 17:48:41,886 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 6 selfloop transitions, 2 changer transitions 11/64 dead transitions. [2020-10-09 17:48:41,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 173 flow [2020-10-09 17:48:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:48:41,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:48:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 553 transitions. [2020-10-09 17:48:41,906 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8904991948470209 [2020-10-09 17:48:41,907 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 553 transitions. [2020-10-09 17:48:41,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 553 transitions. [2020-10-09 17:48:41,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:48:41,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 553 transitions. [2020-10-09 17:48:41,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:48:41,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:48:41,929 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:48:41,931 INFO L185 Difference]: Start difference. First operand has 64 places, 55 transitions, 119 flow. Second operand 9 states and 553 transitions. [2020-10-09 17:48:41,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 173 flow [2020-10-09 17:48:41,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-09 17:48:41,941 INFO L241 Difference]: Finished difference. Result has 76 places, 53 transitions, 132 flow [2020-10-09 17:48:41,944 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=132, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2020-10-09 17:48:41,945 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2020-10-09 17:48:41,946 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 132 flow [2020-10-09 17:48:41,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:48:41,946 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:48:41,946 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:48:42,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 17:48:42,159 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:48:42,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:48:42,160 INFO L82 PathProgramCache]: Analyzing trace with hash -878880638, now seen corresponding path program 1 times [2020-10-09 17:48:42,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:48:42,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129292943] [2020-10-09 17:48:42,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 17:48:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:48:42,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:48:42,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:48:42,246 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:48:42,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:48:42,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:48:42,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:48:42,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129292943] [2020-10-09 17:48:42,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:48:42,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:48:42,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002247032] [2020-10-09 17:48:42,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:48:42,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:48:42,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:48:42,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:48:42,487 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 69 [2020-10-09 17:48:42,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 132 flow. Second operand 8 states. [2020-10-09 17:48:42,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:48:42,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 69 [2020-10-09 17:48:42,488 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:48:42,580 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-09 17:48:42,581 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-09 17:48:42,581 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 76 events. 3/76 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 2/78 useless extension candidates. Maximal degree in co-relation 115. Up to 7 conditions per place. [2020-10-09 17:48:42,582 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 6 selfloop transitions, 2 changer transitions 10/63 dead transitions. [2020-10-09 17:48:42,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 63 transitions, 206 flow [2020-10-09 17:48:42,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:48:42,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:48:42,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 551 transitions. [2020-10-09 17:48:42,587 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8872785829307569 [2020-10-09 17:48:42,587 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 551 transitions. [2020-10-09 17:48:42,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 551 transitions. [2020-10-09 17:48:42,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:48:42,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 551 transitions. [2020-10-09 17:48:42,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:48:42,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:48:42,591 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:48:42,591 INFO L185 Difference]: Start difference. First operand has 76 places, 53 transitions, 132 flow. Second operand 9 states and 551 transitions. [2020-10-09 17:48:42,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 63 transitions, 206 flow [2020-10-09 17:48:42,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 174 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 17:48:42,595 INFO L241 Difference]: Finished difference. Result has 76 places, 53 transitions, 136 flow [2020-10-09 17:48:42,596 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=136, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2020-10-09 17:48:42,596 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2020-10-09 17:48:42,597 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 136 flow [2020-10-09 17:48:42,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:48:42,597 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:48:42,597 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:48:42,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 17:48:42,811 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:48:42,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:48:42,812 INFO L82 PathProgramCache]: Analyzing trace with hash -419054941, now seen corresponding path program 1 times [2020-10-09 17:48:42,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:48:42,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186619405] [2020-10-09 17:48:42,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 17:48:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:48:42,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:48:42,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:48:42,899 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:48:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:48:42,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:48:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:48:42,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186619405] [2020-10-09 17:48:42,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:48:42,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 17:48:42,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561552251] [2020-10-09 17:48:42,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:48:42,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:48:42,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:48:42,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:48:43,159 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 69 [2020-10-09 17:48:43,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 136 flow. Second operand 9 states. [2020-10-09 17:48:43,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:48:43,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 69 [2020-10-09 17:48:43,161 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:48:43,318 INFO L129 PetriNetUnfolder]: 4/74 cut-off events. [2020-10-09 17:48:43,318 INFO L130 PetriNetUnfolder]: For 22/29 co-relation queries the response was YES. [2020-10-09 17:48:43,319 INFO L80 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 74 events. 4/74 cut-off events. For 22/29 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 2/75 useless extension candidates. Maximal degree in co-relation 124. Up to 7 conditions per place. [2020-10-09 17:48:43,321 INFO L132 encePairwiseOnDemand]: 61/69 looper letters, 6 selfloop transitions, 4 changer transitions 12/65 dead transitions. [2020-10-09 17:48:43,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 65 transitions, 229 flow [2020-10-09 17:48:43,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 17:48:43,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 17:48:43,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 594 transitions. [2020-10-09 17:48:43,325 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8608695652173913 [2020-10-09 17:48:43,325 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 594 transitions. [2020-10-09 17:48:43,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 594 transitions. [2020-10-09 17:48:43,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:48:43,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 594 transitions. [2020-10-09 17:48:43,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 17:48:43,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 17:48:43,330 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 17:48:43,330 INFO L185 Difference]: Start difference. First operand has 76 places, 53 transitions, 136 flow. Second operand 10 states and 594 transitions. [2020-10-09 17:48:43,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 65 transitions, 229 flow [2020-10-09 17:48:43,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 65 transitions, 197 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 17:48:43,336 INFO L241 Difference]: Finished difference. Result has 79 places, 53 transitions, 150 flow [2020-10-09 17:48:43,336 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=150, PETRI_PLACES=79, PETRI_TRANSITIONS=53} [2020-10-09 17:48:43,336 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 15 predicate places. [2020-10-09 17:48:43,337 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 53 transitions, 150 flow [2020-10-09 17:48:43,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:48:43,337 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:48:43,337 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:48:43,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 17:48:43,552 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:48:43,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:48:43,552 INFO L82 PathProgramCache]: Analyzing trace with hash -360661948, now seen corresponding path program 1 times [2020-10-09 17:48:43,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:48:43,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065956639] [2020-10-09 17:48:43,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 17:48:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:48:43,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:48:43,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:48:43,632 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:48:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:48:43,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:48:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:48:43,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065956639] [2020-10-09 17:48:43,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:48:43,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 17:48:43,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54815817] [2020-10-09 17:48:43,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:48:43,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:48:43,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:48:43,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:48:43,932 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 69 [2020-10-09 17:48:43,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 53 transitions, 150 flow. Second operand 9 states. [2020-10-09 17:48:43,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:48:43,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 69 [2020-10-09 17:48:43,933 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:48:44,053 INFO L129 PetriNetUnfolder]: 4/79 cut-off events. [2020-10-09 17:48:44,054 INFO L130 PetriNetUnfolder]: For 51/65 co-relation queries the response was YES. [2020-10-09 17:48:44,054 INFO L80 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 79 events. 4/79 cut-off events. For 51/65 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 165 event pairs, 0 based on Foata normal form. 3/82 useless extension candidates. Maximal degree in co-relation 145. Up to 7 conditions per place. [2020-10-09 17:48:44,055 INFO L132 encePairwiseOnDemand]: 61/69 looper letters, 6 selfloop transitions, 4 changer transitions 12/65 dead transitions. [2020-10-09 17:48:44,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 65 transitions, 251 flow [2020-10-09 17:48:44,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 17:48:44,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 17:48:44,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 594 transitions. [2020-10-09 17:48:44,058 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8608695652173913 [2020-10-09 17:48:44,058 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 594 transitions. [2020-10-09 17:48:44,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 594 transitions. [2020-10-09 17:48:44,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:48:44,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 594 transitions. [2020-10-09 17:48:44,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 17:48:44,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 17:48:44,063 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 17:48:44,063 INFO L185 Difference]: Start difference. First operand has 79 places, 53 transitions, 150 flow. Second operand 10 states and 594 transitions. [2020-10-09 17:48:44,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 65 transitions, 251 flow [2020-10-09 17:48:44,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 65 transitions, 192 flow, removed 23 selfloop flow, removed 11 redundant places. [2020-10-09 17:48:44,067 INFO L241 Difference]: Finished difference. Result has 79 places, 53 transitions, 150 flow [2020-10-09 17:48:44,068 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=150, PETRI_PLACES=79, PETRI_TRANSITIONS=53} [2020-10-09 17:48:44,068 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 15 predicate places. [2020-10-09 17:48:44,068 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 53 transitions, 150 flow [2020-10-09 17:48:44,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:48:44,069 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:48:44,069 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:48:44,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 17:48:44,289 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:48:44,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:48:44,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1478344867, now seen corresponding path program 1 times [2020-10-09 17:48:44,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:48:44,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499116333] [2020-10-09 17:48:44,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-09 17:48:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:48:44,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 17:48:44,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:48:44,352 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:48:44,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:48:44,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:48:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:48:44,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499116333] [2020-10-09 17:48:44,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:48:44,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:48:44,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689870408] [2020-10-09 17:48:44,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:48:44,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:48:44,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:48:44,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:48:44,523 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-09 17:48:44,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 53 transitions, 150 flow. Second operand 8 states. [2020-10-09 17:48:44,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:48:44,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-09 17:48:44,524 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:48:44,743 INFO L129 PetriNetUnfolder]: 64/240 cut-off events. [2020-10-09 17:48:44,743 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2020-10-09 17:48:44,746 INFO L80 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 240 events. 64/240 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1066 event pairs, 0 based on Foata normal form. 8/240 useless extension candidates. Maximal degree in co-relation 401. Up to 36 conditions per place. [2020-10-09 17:48:44,747 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 10 selfloop transitions, 9 changer transitions 29/91 dead transitions. [2020-10-09 17:48:44,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 91 transitions, 322 flow [2020-10-09 17:48:44,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 17:48:44,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-09 17:48:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 723 transitions. [2020-10-09 17:48:44,751 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8731884057971014 [2020-10-09 17:48:44,751 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 723 transitions. [2020-10-09 17:48:44,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 723 transitions. [2020-10-09 17:48:44,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:48:44,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 723 transitions. [2020-10-09 17:48:44,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-09 17:48:44,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-09 17:48:44,758 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-09 17:48:44,758 INFO L185 Difference]: Start difference. First operand has 79 places, 53 transitions, 150 flow. Second operand 12 states and 723 transitions. [2020-10-09 17:48:44,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 91 transitions, 322 flow [2020-10-09 17:48:44,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 91 transitions, 296 flow, removed 8 selfloop flow, removed 10 redundant places. [2020-10-09 17:48:44,763 INFO L241 Difference]: Finished difference. Result has 83 places, 59 transitions, 222 flow [2020-10-09 17:48:44,763 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=222, PETRI_PLACES=83, PETRI_TRANSITIONS=59} [2020-10-09 17:48:44,763 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 19 predicate places. [2020-10-09 17:48:44,764 INFO L481 AbstractCegarLoop]: Abstraction has has 83 places, 59 transitions, 222 flow [2020-10-09 17:48:44,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:48:44,764 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:48:44,764 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:48:44,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 17:48:44,978 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:48:44,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:48:44,978 INFO L82 PathProgramCache]: Analyzing trace with hash 692898141, now seen corresponding path program 1 times [2020-10-09 17:48:44,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:48:44,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414114346] [2020-10-09 17:48:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-09 17:48:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:48:45,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 17:48:45,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:48:45,045 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:48:45,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:48:45,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:48:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:48:45,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414114346] [2020-10-09 17:48:45,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:48:45,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2020-10-09 17:48:45,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610134606] [2020-10-09 17:48:45,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 17:48:45,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:48:45,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 17:48:45,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-09 17:48:45,264 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-09 17:48:45,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 59 transitions, 222 flow. Second operand 10 states. [2020-10-09 17:48:45,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:48:45,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-09 17:48:45,265 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:48:45,387 INFO L129 PetriNetUnfolder]: 16/99 cut-off events. [2020-10-09 17:48:45,388 INFO L130 PetriNetUnfolder]: For 361/386 co-relation queries the response was YES. [2020-10-09 17:48:45,388 INFO L80 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 99 events. 16/99 cut-off events. For 361/386 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 223 event pairs, 0 based on Foata normal form. 14/112 useless extension candidates. Maximal degree in co-relation 296. Up to 27 conditions per place. [2020-10-09 17:48:45,389 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 4 selfloop transitions, 12 changer transitions 13/72 dead transitions. [2020-10-09 17:48:45,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 72 transitions, 405 flow [2020-10-09 17:48:45,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 17:48:45,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-09 17:48:45,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 647 transitions. [2020-10-09 17:48:45,392 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.852437417654809 [2020-10-09 17:48:45,393 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 647 transitions. [2020-10-09 17:48:45,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 647 transitions. [2020-10-09 17:48:45,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:48:45,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 647 transitions. [2020-10-09 17:48:45,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-09 17:48:45,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-09 17:48:45,397 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-09 17:48:45,397 INFO L185 Difference]: Start difference. First operand has 83 places, 59 transitions, 222 flow. Second operand 11 states and 647 transitions. [2020-10-09 17:48:45,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 72 transitions, 405 flow [2020-10-09 17:48:45,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 72 transitions, 315 flow, removed 39 selfloop flow, removed 8 redundant places. [2020-10-09 17:48:45,401 INFO L241 Difference]: Finished difference. Result has 85 places, 59 transitions, 228 flow [2020-10-09 17:48:45,402 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=228, PETRI_PLACES=85, PETRI_TRANSITIONS=59} [2020-10-09 17:48:45,402 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 21 predicate places. [2020-10-09 17:48:45,402 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 59 transitions, 228 flow [2020-10-09 17:48:45,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 17:48:45,403 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:48:45,403 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:48:45,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-09 17:48:45,615 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:48:45,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:48:45,615 INFO L82 PathProgramCache]: Analyzing trace with hash 90595998, now seen corresponding path program 1 times [2020-10-09 17:48:45,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:48:45,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090080720] [2020-10-09 17:48:45,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-09 17:48:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:48:45,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:48:45,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:48:45,726 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:48:45,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:48:45,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:48:45,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:48:45,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090080720] [2020-10-09 17:48:45,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:48:45,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 17:48:45,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288856271] [2020-10-09 17:48:45,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:48:45,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:48:45,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:48:45,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:48:46,036 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 69 [2020-10-09 17:48:46,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 59 transitions, 228 flow. Second operand 9 states. [2020-10-09 17:48:46,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:48:46,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 69 [2020-10-09 17:48:46,040 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:48:46,102 INFO L129 PetriNetUnfolder]: 5/68 cut-off events. [2020-10-09 17:48:46,102 INFO L130 PetriNetUnfolder]: For 64/70 co-relation queries the response was YES. [2020-10-09 17:48:46,103 INFO L80 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 68 events. 5/68 cut-off events. For 64/70 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 79 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 132. Up to 11 conditions per place. [2020-10-09 17:48:46,103 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2020-10-09 17:48:46,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 57 transitions, 242 flow [2020-10-09 17:48:46,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 17:48:46,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-09 17:48:46,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 409 transitions. [2020-10-09 17:48:46,106 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8467908902691511 [2020-10-09 17:48:46,106 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 409 transitions. [2020-10-09 17:48:46,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 409 transitions. [2020-10-09 17:48:46,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:48:46,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 409 transitions. [2020-10-09 17:48:46,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-09 17:48:46,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-09 17:48:46,109 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-09 17:48:46,110 INFO L185 Difference]: Start difference. First operand has 85 places, 59 transitions, 228 flow. Second operand 7 states and 409 transitions. [2020-10-09 17:48:46,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 57 transitions, 242 flow [2020-10-09 17:48:46,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 57 transitions, 166 flow, removed 19 selfloop flow, removed 15 redundant places. [2020-10-09 17:48:46,112 INFO L241 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2020-10-09 17:48:46,112 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2020-10-09 17:48:46,113 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 6 predicate places. [2020-10-09 17:48:46,113 INFO L481 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2020-10-09 17:48:46,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:48:46,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-09 17:48:46,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 05:48:46 BasicIcfg [2020-10-09 17:48:46,333 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 17:48:46,335 INFO L168 Benchmark]: Toolchain (without parser) took 6665.18 ms. Allocated memory was 253.2 MB in the beginning and 424.7 MB in the end (delta: 171.4 MB). Free memory was 205.8 MB in the beginning and 196.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 180.4 MB. Max. memory is 14.2 GB. [2020-10-09 17:48:46,336 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 253.2 MB. Free memory is still 227.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 17:48:46,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 743.96 ms. Allocated memory was 253.2 MB in the beginning and 319.3 MB in the end (delta: 66.1 MB). Free memory was 205.8 MB in the beginning and 272.6 MB in the end (delta: -66.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 14.2 GB. [2020-10-09 17:48:46,338 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.14 ms. Allocated memory is still 319.3 MB. Free memory was 272.6 MB in the beginning and 270.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:48:46,339 INFO L168 Benchmark]: Boogie Preprocessor took 25.07 ms. Allocated memory is still 319.3 MB. Free memory was 270.1 MB in the beginning and 267.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:48:46,340 INFO L168 Benchmark]: RCFGBuilder took 429.07 ms. Allocated memory is still 319.3 MB. Free memory was 267.5 MB in the beginning and 245.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-09 17:48:46,340 INFO L168 Benchmark]: TraceAbstraction took 5415.94 ms. Allocated memory was 319.3 MB in the beginning and 424.7 MB in the end (delta: 105.4 MB). Free memory was 245.7 MB in the beginning and 196.9 MB in the end (delta: 48.8 MB). Peak memory consumption was 154.2 MB. Max. memory is 14.2 GB. [2020-10-09 17:48:46,345 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 253.2 MB. Free memory is still 227.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 743.96 ms. Allocated memory was 253.2 MB in the beginning and 319.3 MB in the end (delta: 66.1 MB). Free memory was 205.8 MB in the beginning and 272.6 MB in the end (delta: -66.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.14 ms. Allocated memory is still 319.3 MB. Free memory was 272.6 MB in the beginning and 270.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.07 ms. Allocated memory is still 319.3 MB. Free memory was 270.1 MB in the beginning and 267.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 429.07 ms. Allocated memory is still 319.3 MB. Free memory was 267.5 MB in the beginning and 245.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5415.94 ms. Allocated memory was 319.3 MB in the beginning and 424.7 MB in the end (delta: 105.4 MB). Free memory was 245.7 MB in the beginning and 196.9 MB in the end (delta: 48.8 MB). Peak memory consumption was 154.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 68 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: 5.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 272 SDslu, 592 SDs, 0 SdLazy, 488 SolverSat, 92 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 609 GetRequests, 504 SyntacticMatches, 15 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=228occurred in iteration=6, 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, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 290 NumberOfCodeBlocks, 290 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 566 ConstructedInterpolants, 0 QuantifiedInterpolants, 61227 SizeOfPredicates, 49 NumberOfNonLiveVariables, 748 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...