/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/safe025_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:41:49,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:41:49,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:41:49,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:41:49,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:41:49,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:41:49,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:41:49,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:41:49,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:41:49,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:41:49,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:41:49,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:41:49,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:41:49,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:41:49,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:41:49,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:41:49,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:41:49,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:41:49,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:41:49,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:41:49,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:41:49,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:41:49,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:41:49,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:41:49,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:41:49,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:41:49,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:41:49,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:41:49,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:41:49,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:41:49,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:41:49,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:41:49,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:41:49,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:41:49,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:41:49,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:41:49,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:41:49,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:41:49,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:41:49,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:41:49,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:41:49,269 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:41:49,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:41:49,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:41:49,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:41:49,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:41:49,293 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:41:49,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:41:49,293 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:41:49,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:41:49,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:41:49,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:41:49,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:41:49,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:41:49,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:41:49,295 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:41:49,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:41:49,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:41:49,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:41:49,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:41:49,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:41:49,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:41:49,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:41:49,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:41:49,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:41:49,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:41:49,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:41:49,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:41:49,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:41:49,297 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:41:49,298 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:41:49,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:41:49,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:41:49,591 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:41:49,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:41:49,596 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:41:49,596 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:41:49,597 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2020-10-11 18:41:49,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9ec02f7b/675488303c064c66a7afb3ad2eedf3ec/FLAGbd12cf853 [2020-10-11 18:41:50,133 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:41:50,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2020-10-11 18:41:50,148 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9ec02f7b/675488303c064c66a7afb3ad2eedf3ec/FLAGbd12cf853 [2020-10-11 18:41:50,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9ec02f7b/675488303c064c66a7afb3ad2eedf3ec [2020-10-11 18:41:50,475 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:41:50,476 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:41:50,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:41:50,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:41:50,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:41:50,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:41:50" (1/1) ... [2020-10-11 18:41:50,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ffe112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:50, skipping insertion in model container [2020-10-11 18:41:50,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:41:50" (1/1) ... [2020-10-11 18:41:50,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:41:50,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:41:51,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:41:51,028 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:41:51,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:41:51,181 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:41:51,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:51 WrapperNode [2020-10-11 18:41:51,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:41:51,183 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:41:51,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:41:51,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:41:51,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:51" (1/1) ... [2020-10-11 18:41:51,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:51" (1/1) ... [2020-10-11 18:41:51,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:41:51,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:41:51,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:41:51,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:41:51,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:51" (1/1) ... [2020-10-11 18:41:51,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:51" (1/1) ... [2020-10-11 18:41:51,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:51" (1/1) ... [2020-10-11 18:41:51,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:51" (1/1) ... [2020-10-11 18:41:51,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:51" (1/1) ... [2020-10-11 18:41:51,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:51" (1/1) ... [2020-10-11 18:41:51,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:51" (1/1) ... [2020-10-11 18:41:51,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:41:51,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:41:51,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:41:51,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:41:51,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:51" (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 [2020-10-11 18:41:51,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:41:51,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:41:51,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:41:51,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:41:51,327 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:41:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:41:51,327 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:41:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:41:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:41:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:41:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:41:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:41:51,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:41:51,330 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:41:51,683 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:41:51,683 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:41:51,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:41:51 BoogieIcfgContainer [2020-10-11 18:41:51,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:41:51,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:41:51,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:41:51,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:41:51,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:41:50" (1/3) ... [2020-10-11 18:41:51,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6295ed9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:41:51, skipping insertion in model container [2020-10-11 18:41:51,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:51" (2/3) ... [2020-10-11 18:41:51,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6295ed9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:41:51, skipping insertion in model container [2020-10-11 18:41:51,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:41:51" (3/3) ... [2020-10-11 18:41:51,693 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2020-10-11 18:41:51,704 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:41:51,711 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:41:51,712 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:41:51,739 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,740 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,740 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,740 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,741 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,741 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,742 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,742 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,742 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,742 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,743 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,743 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,743 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,743 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,744 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,744 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,748 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,748 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,748 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,749 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,754 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,754 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,755 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,757 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,757 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,757 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,757 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:51,774 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:41:51,795 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:41:51,795 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:41:51,795 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:41:51,795 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:41:51,795 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:41:51,795 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:41:51,796 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:41:51,796 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:41:51,809 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:41:51,848 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-11 18:41:51,849 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:41:51,854 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-11 18:41:51,854 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:41:51,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-11 18:41:51,878 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-11 18:41:51,878 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:41:51,878 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:51,879 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] [2020-10-11 18:41:51,880 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:51,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:51,886 INFO L82 PathProgramCache]: Analyzing trace with hash -2081382383, now seen corresponding path program 1 times [2020-10-11 18:41:51,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:51,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843318285] [2020-10-11 18:41:51,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:52,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:52,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843318285] [2020-10-11 18:41:52,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:52,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:41:52,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984858010] [2020-10-11 18:41:52,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:41:52,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:52,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:41:52,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:41:52,580 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-11 18:41:52,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 121 flow. Second operand 6 states. [2020-10-11 18:41:52,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:52,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-11 18:41:52,584 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:52,762 INFO L129 PetriNetUnfolder]: 11/90 cut-off events. [2020-10-11 18:41:52,762 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:41:52,763 INFO L80 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 90 events. 11/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 176 event pairs, 5 based on Foata normal form. 5/93 useless extension candidates. Maximal degree in co-relation 113. Up to 19 conditions per place. [2020-10-11 18:41:52,767 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 7 selfloop transitions, 2 changer transitions 14/68 dead transitions. [2020-10-11 18:41:52,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 189 flow [2020-10-11 18:41:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:41:52,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:41:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 557 transitions. [2020-10-11 18:41:52,794 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8841269841269841 [2020-10-11 18:41:52,795 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 557 transitions. [2020-10-11 18:41:52,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 557 transitions. [2020-10-11 18:41:52,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:52,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 557 transitions. [2020-10-11 18:41:52,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:41:52,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:41:52,826 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:41:52,828 INFO L185 Difference]: Start difference. First operand has 65 places, 56 transitions, 121 flow. Second operand 9 states and 557 transitions. [2020-10-11 18:41:52,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 189 flow [2020-10-11 18:41:52,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 186 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:41:52,838 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 134 flow [2020-10-11 18:41:52,841 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=134, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2020-10-11 18:41:52,842 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-11 18:41:52,842 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 134 flow [2020-10-11 18:41:52,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:41:52,842 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:52,842 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] [2020-10-11 18:41:52,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:41:52,843 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:52,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:52,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1104696402, now seen corresponding path program 1 times [2020-10-11 18:41:52,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:52,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328772530] [2020-10-11 18:41:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:53,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328772530] [2020-10-11 18:41:53,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:53,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:41:53,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823260330] [2020-10-11 18:41:53,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:41:53,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:53,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:41:53,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:41:53,245 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-11 18:41:53,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 134 flow. Second operand 6 states. [2020-10-11 18:41:53,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:53,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-11 18:41:53,246 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:53,353 INFO L129 PetriNetUnfolder]: 3/68 cut-off events. [2020-10-11 18:41:53,353 INFO L130 PetriNetUnfolder]: For 15/16 co-relation queries the response was YES. [2020-10-11 18:41:53,354 INFO L80 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 68 events. 3/68 cut-off events. For 15/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 2/70 useless extension candidates. Maximal degree in co-relation 108. Up to 9 conditions per place. [2020-10-11 18:41:53,354 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 7 selfloop transitions, 2 changer transitions 10/64 dead transitions. [2020-10-11 18:41:53,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 210 flow [2020-10-11 18:41:53,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:41:53,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:41:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 552 transitions. [2020-10-11 18:41:53,358 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8761904761904762 [2020-10-11 18:41:53,358 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 552 transitions. [2020-10-11 18:41:53,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 552 transitions. [2020-10-11 18:41:53,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:53,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 552 transitions. [2020-10-11 18:41:53,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:41:53,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:41:53,363 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:41:53,363 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 134 flow. Second operand 9 states and 552 transitions. [2020-10-11 18:41:53,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 210 flow [2020-10-11 18:41:53,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 178 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:41:53,368 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 138 flow [2020-10-11 18:41:53,368 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=62, 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=138, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2020-10-11 18:41:53,369 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-11 18:41:53,369 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 138 flow [2020-10-11 18:41:53,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:41:53,369 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:53,369 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] [2020-10-11 18:41:53,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:41:53,370 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:53,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:53,370 INFO L82 PathProgramCache]: Analyzing trace with hash 129834660, now seen corresponding path program 1 times [2020-10-11 18:41:53,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:53,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308883500] [2020-10-11 18:41:53,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:53,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308883500] [2020-10-11 18:41:53,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:53,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:41:53,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919307954] [2020-10-11 18:41:53,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:41:53,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:53,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:41:53,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:41:53,632 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-11 18:41:53,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 138 flow. Second operand 6 states. [2020-10-11 18:41:53,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:53,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-11 18:41:53,633 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:53,740 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-10-11 18:41:53,740 INFO L130 PetriNetUnfolder]: For 24/26 co-relation queries the response was YES. [2020-10-11 18:41:53,741 INFO L80 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 77 events. 3/77 cut-off events. For 24/26 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 2/79 useless extension candidates. Maximal degree in co-relation 119. Up to 7 conditions per place. [2020-10-11 18:41:53,741 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 6 selfloop transitions, 2 changer transitions 10/64 dead transitions. [2020-10-11 18:41:53,742 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 64 transitions, 214 flow [2020-10-11 18:41:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:41:53,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:41:53,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2020-10-11 18:41:53,745 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-10-11 18:41:53,745 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 560 transitions. [2020-10-11 18:41:53,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 560 transitions. [2020-10-11 18:41:53,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:53,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 560 transitions. [2020-10-11 18:41:53,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:41:53,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:41:53,750 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:41:53,750 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 138 flow. Second operand 9 states and 560 transitions. [2020-10-11 18:41:53,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 64 transitions, 214 flow [2020-10-11 18:41:53,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 64 transitions, 182 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:41:53,754 INFO L241 Difference]: Finished difference. Result has 78 places, 54 transitions, 142 flow [2020-10-11 18:41:53,754 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=63, 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=142, PETRI_PLACES=78, PETRI_TRANSITIONS=54} [2020-10-11 18:41:53,754 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 13 predicate places. [2020-10-11 18:41:53,755 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 54 transitions, 142 flow [2020-10-11 18:41:53,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:41:53,755 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:53,755 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] [2020-10-11 18:41:53,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:41:53,756 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:53,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:53,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1148757083, now seen corresponding path program 1 times [2020-10-11 18:41:53,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:53,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370570981] [2020-10-11 18:41:53,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:53,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370570981] [2020-10-11 18:41:53,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:53,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:41:53,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524029294] [2020-10-11 18:41:53,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:41:53,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:53,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:41:53,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:41:54,058 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:41:54,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 54 transitions, 142 flow. Second operand 6 states. [2020-10-11 18:41:54,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:54,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:41:54,060 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:54,247 INFO L129 PetriNetUnfolder]: 91/273 cut-off events. [2020-10-11 18:41:54,248 INFO L130 PetriNetUnfolder]: For 46/49 co-relation queries the response was YES. [2020-10-11 18:41:54,250 INFO L80 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 273 events. 91/273 cut-off events. For 46/49 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1260 event pairs, 2 based on Foata normal form. 8/278 useless extension candidates. Maximal degree in co-relation 493. Up to 81 conditions per place. [2020-10-11 18:41:54,252 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 6 changer transitions 19/79 dead transitions. [2020-10-11 18:41:54,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 262 flow [2020-10-11 18:41:54,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:41:54,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:41:54,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 550 transitions. [2020-10-11 18:41:54,257 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2020-10-11 18:41:54,257 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 550 transitions. [2020-10-11 18:41:54,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 550 transitions. [2020-10-11 18:41:54,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:54,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 550 transitions. [2020-10-11 18:41:54,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:41:54,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:41:54,263 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:41:54,263 INFO L185 Difference]: Start difference. First operand has 78 places, 54 transitions, 142 flow. Second operand 9 states and 550 transitions. [2020-10-11 18:41:54,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 262 flow [2020-10-11 18:41:54,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 79 transitions, 246 flow, removed 6 selfloop flow, removed 8 redundant places. [2020-10-11 18:41:54,268 INFO L241 Difference]: Finished difference. Result has 78 places, 57 transitions, 182 flow [2020-10-11 18:41:54,268 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=182, PETRI_PLACES=78, PETRI_TRANSITIONS=57} [2020-10-11 18:41:54,269 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 13 predicate places. [2020-10-11 18:41:54,269 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 57 transitions, 182 flow [2020-10-11 18:41:54,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:41:54,269 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:54,269 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] [2020-10-11 18:41:54,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:41:54,270 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:54,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:54,270 INFO L82 PathProgramCache]: Analyzing trace with hash -664420898, now seen corresponding path program 1 times [2020-10-11 18:41:54,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:54,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059984397] [2020-10-11 18:41:54,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:54,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059984397] [2020-10-11 18:41:54,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:54,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:41:54,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661346595] [2020-10-11 18:41:54,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:41:54,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:54,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:41:54,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:41:54,623 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:41:54,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 57 transitions, 182 flow. Second operand 7 states. [2020-10-11 18:41:54,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:54,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:41:54,624 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:54,807 INFO L129 PetriNetUnfolder]: 52/187 cut-off events. [2020-10-11 18:41:54,807 INFO L130 PetriNetUnfolder]: For 298/311 co-relation queries the response was YES. [2020-10-11 18:41:54,809 INFO L80 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 187 events. 52/187 cut-off events. For 298/311 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 687 event pairs, 0 based on Foata normal form. 12/197 useless extension candidates. Maximal degree in co-relation 549. Up to 75 conditions per place. [2020-10-11 18:41:54,810 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 9 changer transitions 19/82 dead transitions. [2020-10-11 18:41:54,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 82 transitions, 435 flow [2020-10-11 18:41:54,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:41:54,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:41:54,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 610 transitions. [2020-10-11 18:41:54,813 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8714285714285714 [2020-10-11 18:41:54,814 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 610 transitions. [2020-10-11 18:41:54,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 610 transitions. [2020-10-11 18:41:54,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:54,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 610 transitions. [2020-10-11 18:41:54,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:41:54,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:41:54,818 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:41:54,818 INFO L185 Difference]: Start difference. First operand has 78 places, 57 transitions, 182 flow. Second operand 10 states and 610 transitions. [2020-10-11 18:41:54,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 82 transitions, 435 flow [2020-10-11 18:41:54,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 82 transitions, 411 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-11 18:41:54,829 INFO L241 Difference]: Finished difference. Result has 84 places, 60 transitions, 250 flow [2020-10-11 18:41:54,829 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=250, PETRI_PLACES=84, PETRI_TRANSITIONS=60} [2020-10-11 18:41:54,829 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 19 predicate places. [2020-10-11 18:41:54,829 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 60 transitions, 250 flow [2020-10-11 18:41:54,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:41:54,830 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:54,830 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] [2020-10-11 18:41:54,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:41:54,830 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:54,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:54,831 INFO L82 PathProgramCache]: Analyzing trace with hash -693805999, now seen corresponding path program 1 times [2020-10-11 18:41:54,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:54,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983356291] [2020-10-11 18:41:54,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:54,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983356291] [2020-10-11 18:41:54,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:54,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:41:54,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25978780] [2020-10-11 18:41:54,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:41:54,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:54,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:41:54,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:41:55,191 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:41:55,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 60 transitions, 250 flow. Second operand 7 states. [2020-10-11 18:41:55,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:55,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:41:55,192 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:55,292 INFO L129 PetriNetUnfolder]: 30/201 cut-off events. [2020-10-11 18:41:55,293 INFO L130 PetriNetUnfolder]: For 525/558 co-relation queries the response was YES. [2020-10-11 18:41:55,294 INFO L80 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 201 events. 30/201 cut-off events. For 525/558 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 841 event pairs, 6 based on Foata normal form. 10/208 useless extension candidates. Maximal degree in co-relation 592. Up to 54 conditions per place. [2020-10-11 18:41:55,295 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 8 selfloop transitions, 4 changer transitions 5/66 dead transitions. [2020-10-11 18:41:55,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 66 transitions, 304 flow [2020-10-11 18:41:55,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:41:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:41:55,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 417 transitions. [2020-10-11 18:41:55,298 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8510204081632653 [2020-10-11 18:41:55,298 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 417 transitions. [2020-10-11 18:41:55,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 417 transitions. [2020-10-11 18:41:55,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:55,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 417 transitions. [2020-10-11 18:41:55,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:41:55,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:41:55,301 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:41:55,301 INFO L185 Difference]: Start difference. First operand has 84 places, 60 transitions, 250 flow. Second operand 7 states and 417 transitions. [2020-10-11 18:41:55,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 66 transitions, 304 flow [2020-10-11 18:41:55,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 66 transitions, 248 flow, removed 20 selfloop flow, removed 9 redundant places. [2020-10-11 18:41:55,306 INFO L241 Difference]: Finished difference. Result has 81 places, 60 transitions, 214 flow [2020-10-11 18:41:55,306 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=81, PETRI_TRANSITIONS=60} [2020-10-11 18:41:55,306 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 16 predicate places. [2020-10-11 18:41:55,306 INFO L481 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 214 flow [2020-10-11 18:41:55,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:41:55,307 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:55,307 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] [2020-10-11 18:41:55,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:41:55,307 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:55,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:55,308 INFO L82 PathProgramCache]: Analyzing trace with hash -33370603, now seen corresponding path program 2 times [2020-10-11 18:41:55,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:55,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440989522] [2020-10-11 18:41:55,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:55,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440989522] [2020-10-11 18:41:55,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:55,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:41:55,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448862644] [2020-10-11 18:41:55,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:41:55,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:55,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:41:55,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:41:55,543 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:41:55,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 214 flow. Second operand 8 states. [2020-10-11 18:41:55,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:55,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:41:55,544 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:55,705 INFO L129 PetriNetUnfolder]: 16/100 cut-off events. [2020-10-11 18:41:55,705 INFO L130 PetriNetUnfolder]: For 164/188 co-relation queries the response was YES. [2020-10-11 18:41:55,706 INFO L80 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 100 events. 16/100 cut-off events. For 164/188 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 219 event pairs, 0 based on Foata normal form. 14/113 useless extension candidates. Maximal degree in co-relation 260. Up to 27 conditions per place. [2020-10-11 18:41:55,707 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 4 selfloop transitions, 12 changer transitions 13/73 dead transitions. [2020-10-11 18:41:55,707 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 73 transitions, 359 flow [2020-10-11 18:41:55,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:41:55,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:41:55,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 658 transitions. [2020-10-11 18:41:55,710 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8545454545454545 [2020-10-11 18:41:55,710 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 658 transitions. [2020-10-11 18:41:55,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 658 transitions. [2020-10-11 18:41:55,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:55,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 658 transitions. [2020-10-11 18:41:55,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:41:55,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:41:55,715 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:41:55,715 INFO L185 Difference]: Start difference. First operand has 81 places, 60 transitions, 214 flow. Second operand 11 states and 658 transitions. [2020-10-11 18:41:55,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 73 transitions, 359 flow [2020-10-11 18:41:55,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 313 flow, removed 16 selfloop flow, removed 9 redundant places. [2020-10-11 18:41:55,718 INFO L241 Difference]: Finished difference. Result has 85 places, 60 transitions, 226 flow [2020-10-11 18:41:55,719 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=226, PETRI_PLACES=85, PETRI_TRANSITIONS=60} [2020-10-11 18:41:55,719 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2020-10-11 18:41:55,719 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 60 transitions, 226 flow [2020-10-11 18:41:55,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:41:55,719 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:55,720 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, 1] [2020-10-11 18:41:55,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:41:55,720 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:55,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:55,720 INFO L82 PathProgramCache]: Analyzing trace with hash -794306767, now seen corresponding path program 1 times [2020-10-11 18:41:55,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:55,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404732596] [2020-10-11 18:41:55,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:55,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404732596] [2020-10-11 18:41:55,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:55,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:41:55,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492630878] [2020-10-11 18:41:55,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:41:55,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:55,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:41:55,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:41:56,011 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:41:56,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 60 transitions, 226 flow. Second operand 7 states. [2020-10-11 18:41:56,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:56,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:41:56,011 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:56,090 INFO L129 PetriNetUnfolder]: 10/106 cut-off events. [2020-10-11 18:41:56,090 INFO L130 PetriNetUnfolder]: For 102/108 co-relation queries the response was YES. [2020-10-11 18:41:56,091 INFO L80 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 106 events. 10/106 cut-off events. For 102/108 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 239 event pairs, 0 based on Foata normal form. 1/106 useless extension candidates. Maximal degree in co-relation 214. Up to 21 conditions per place. [2020-10-11 18:41:56,091 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 9 selfloop transitions, 2 changer transitions 6/66 dead transitions. [2020-10-11 18:41:56,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 66 transitions, 273 flow [2020-10-11 18:41:56,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 18:41:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-11 18:41:56,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 474 transitions. [2020-10-11 18:41:56,094 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8464285714285714 [2020-10-11 18:41:56,094 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 474 transitions. [2020-10-11 18:41:56,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 474 transitions. [2020-10-11 18:41:56,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:56,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 474 transitions. [2020-10-11 18:41:56,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-11 18:41:56,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-11 18:41:56,097 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-11 18:41:56,097 INFO L185 Difference]: Start difference. First operand has 85 places, 60 transitions, 226 flow. Second operand 8 states and 474 transitions. [2020-10-11 18:41:56,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 66 transitions, 273 flow [2020-10-11 18:41:56,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 66 transitions, 197 flow, removed 19 selfloop flow, removed 15 redundant places. [2020-10-11 18:41:56,100 INFO L241 Difference]: Finished difference. Result has 78 places, 60 transitions, 166 flow [2020-10-11 18:41:56,101 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=166, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2020-10-11 18:41:56,101 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 13 predicate places. [2020-10-11 18:41:56,101 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 166 flow [2020-10-11 18:41:56,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:41:56,101 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:56,102 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, 1] [2020-10-11 18:41:56,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 18:41:56,102 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:56,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:56,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1988600493, now seen corresponding path program 2 times [2020-10-11 18:41:56,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:56,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824386446] [2020-10-11 18:41:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:56,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824386446] [2020-10-11 18:41:56,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:56,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:41:56,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325143554] [2020-10-11 18:41:56,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:41:56,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:56,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:41:56,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:41:56,478 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:41:56,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 166 flow. Second operand 7 states. [2020-10-11 18:41:56,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:56,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:41:56,479 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:56,553 INFO L129 PetriNetUnfolder]: 11/115 cut-off events. [2020-10-11 18:41:56,553 INFO L130 PetriNetUnfolder]: For 11/12 co-relation queries the response was YES. [2020-10-11 18:41:56,554 INFO L80 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 115 events. 11/115 cut-off events. For 11/12 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 276 event pairs, 1 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 180. Up to 12 conditions per place. [2020-10-11 18:41:56,554 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 10 selfloop transitions, 1 changer transitions 5/65 dead transitions. [2020-10-11 18:41:56,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 65 transitions, 214 flow [2020-10-11 18:41:56,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:41:56,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:41:56,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 416 transitions. [2020-10-11 18:41:56,557 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8489795918367347 [2020-10-11 18:41:56,557 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 416 transitions. [2020-10-11 18:41:56,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 416 transitions. [2020-10-11 18:41:56,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:56,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 416 transitions. [2020-10-11 18:41:56,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:41:56,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:41:56,560 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:41:56,560 INFO L185 Difference]: Start difference. First operand has 78 places, 60 transitions, 166 flow. Second operand 7 states and 416 transitions. [2020-10-11 18:41:56,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 65 transitions, 214 flow [2020-10-11 18:41:56,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 65 transitions, 196 flow, removed 7 selfloop flow, removed 6 redundant places. [2020-10-11 18:41:56,563 INFO L241 Difference]: Finished difference. Result has 78 places, 60 transitions, 167 flow [2020-10-11 18:41:56,563 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=167, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2020-10-11 18:41:56,563 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 13 predicate places. [2020-10-11 18:41:56,564 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 167 flow [2020-10-11 18:41:56,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:41:56,564 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:56,564 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, 1] [2020-10-11 18:41:56,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 18:41:56,564 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:56,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:56,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1281235561, now seen corresponding path program 3 times [2020-10-11 18:41:56,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:56,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039306790] [2020-10-11 18:41:56,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:56,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039306790] [2020-10-11 18:41:56,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:56,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:41:56,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964086044] [2020-10-11 18:41:56,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:41:56,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:56,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:41:56,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:41:56,947 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:41:56,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 167 flow. Second operand 7 states. [2020-10-11 18:41:56,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:56,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:41:56,948 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:57,016 INFO L129 PetriNetUnfolder]: 11/124 cut-off events. [2020-10-11 18:41:57,016 INFO L130 PetriNetUnfolder]: For 12/15 co-relation queries the response was YES. [2020-10-11 18:41:57,017 INFO L80 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 124 events. 11/124 cut-off events. For 12/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 335 event pairs, 0 based on Foata normal form. 1/122 useless extension candidates. Maximal degree in co-relation 195. Up to 14 conditions per place. [2020-10-11 18:41:57,017 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 9 selfloop transitions, 2 changer transitions 6/66 dead transitions. [2020-10-11 18:41:57,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 66 transitions, 225 flow [2020-10-11 18:41:57,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 18:41:57,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-11 18:41:57,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 474 transitions. [2020-10-11 18:41:57,019 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8464285714285714 [2020-10-11 18:41:57,019 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 474 transitions. [2020-10-11 18:41:57,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 474 transitions. [2020-10-11 18:41:57,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:57,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 474 transitions. [2020-10-11 18:41:57,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-11 18:41:57,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-11 18:41:57,023 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-11 18:41:57,023 INFO L185 Difference]: Start difference. First operand has 78 places, 60 transitions, 167 flow. Second operand 8 states and 474 transitions. [2020-10-11 18:41:57,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 66 transitions, 225 flow [2020-10-11 18:41:57,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 66 transitions, 209 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-11 18:41:57,025 INFO L241 Difference]: Finished difference. Result has 81 places, 60 transitions, 174 flow [2020-10-11 18:41:57,025 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=174, PETRI_PLACES=81, PETRI_TRANSITIONS=60} [2020-10-11 18:41:57,026 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 16 predicate places. [2020-10-11 18:41:57,026 INFO L481 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 174 flow [2020-10-11 18:41:57,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:41:57,026 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:57,026 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, 1] [2020-10-11 18:41:57,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 18:41:57,027 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:57,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:57,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1137772213, now seen corresponding path program 4 times [2020-10-11 18:41:57,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:57,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76239237] [2020-10-11 18:41:57,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:57,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:57,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76239237] [2020-10-11 18:41:57,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:57,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:41:57,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397097616] [2020-10-11 18:41:57,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:41:57,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:57,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:41:57,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:41:57,248 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-11 18:41:57,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 174 flow. Second operand 7 states. [2020-10-11 18:41:57,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:57,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-11 18:41:57,249 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:57,322 INFO L129 PetriNetUnfolder]: 7/92 cut-off events. [2020-10-11 18:41:57,323 INFO L130 PetriNetUnfolder]: For 10/13 co-relation queries the response was YES. [2020-10-11 18:41:57,323 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 92 events. 7/92 cut-off events. For 10/13 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 193 event pairs, 0 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 150. Up to 10 conditions per place. [2020-10-11 18:41:57,324 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2020-10-11 18:41:57,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 59 transitions, 190 flow [2020-10-11 18:41:57,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:41:57,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:41:57,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 417 transitions. [2020-10-11 18:41:57,326 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8510204081632653 [2020-10-11 18:41:57,326 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 417 transitions. [2020-10-11 18:41:57,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 417 transitions. [2020-10-11 18:41:57,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:57,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 417 transitions. [2020-10-11 18:41:57,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:41:57,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:41:57,329 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:41:57,329 INFO L185 Difference]: Start difference. First operand has 81 places, 60 transitions, 174 flow. Second operand 7 states and 417 transitions. [2020-10-11 18:41:57,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 59 transitions, 190 flow [2020-10-11 18:41:57,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 59 transitions, 180 flow, removed 3 selfloop flow, removed 5 redundant places. [2020-10-11 18:41:57,330 INFO L241 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2020-10-11 18:41:57,331 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2020-10-11 18:41:57,331 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 10 predicate places. [2020-10-11 18:41:57,331 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2020-10-11 18:41:57,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:41:57,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-11 18:41:57,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:41:57 BasicIcfg [2020-10-11 18:41:57,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:41:57,340 INFO L168 Benchmark]: Toolchain (without parser) took 6862.91 ms. Allocated memory was 252.7 MB in the beginning and 422.6 MB in the end (delta: 169.9 MB). Free memory was 207.9 MB in the beginning and 205.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 172.0 MB. Max. memory is 14.2 GB. [2020-10-11 18:41:57,340 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:41:57,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.16 ms. Allocated memory was 252.7 MB in the beginning and 318.8 MB in the end (delta: 66.1 MB). Free memory was 207.9 MB in the beginning and 272.1 MB in the end (delta: -64.2 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. [2020-10-11 18:41:57,342 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.15 ms. Allocated memory is still 318.8 MB. Free memory was 272.1 MB in the beginning and 269.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:41:57,342 INFO L168 Benchmark]: Boogie Preprocessor took 24.26 ms. Allocated memory is still 318.8 MB. Free memory was 269.6 MB in the beginning and 267.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:41:57,343 INFO L168 Benchmark]: RCFGBuilder took 418.17 ms. Allocated memory is still 318.8 MB. Free memory was 267.1 MB in the beginning and 245.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:41:57,344 INFO L168 Benchmark]: TraceAbstraction took 5650.86 ms. Allocated memory was 318.8 MB in the beginning and 422.6 MB in the end (delta: 103.8 MB). Free memory was 245.2 MB in the beginning and 205.8 MB in the end (delta: 39.5 MB). Peak memory consumption was 143.3 MB. Max. memory is 14.2 GB. [2020-10-11 18:41:57,348 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 705.16 ms. Allocated memory was 252.7 MB in the beginning and 318.8 MB in the end (delta: 66.1 MB). Free memory was 207.9 MB in the beginning and 272.1 MB in the end (delta: -64.2 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 59.15 ms. Allocated memory is still 318.8 MB. Free memory was 272.1 MB in the beginning and 269.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.26 ms. Allocated memory is still 318.8 MB. Free memory was 269.6 MB in the beginning and 267.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 418.17 ms. Allocated memory is still 318.8 MB. Free memory was 267.1 MB in the beginning and 245.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5650.86 ms. Allocated memory was 318.8 MB in the beginning and 422.6 MB in the end (delta: 103.8 MB). Free memory was 245.2 MB in the beginning and 205.8 MB in the end (delta: 39.5 MB). Peak memory consumption was 143.3 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, 69 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 247 SDtfs, 319 SDslu, 813 SDs, 0 SdLazy, 797 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=250occurred in iteration=5, 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, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 476 NumberOfCodeBlocks, 476 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 465 ConstructedInterpolants, 0 QuantifiedInterpolants, 56009 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...