/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:38:37,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:38:37,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:38:37,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:38:37,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:38:37,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:38:37,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:38:37,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:38:37,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:38:37,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:38:37,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:38:37,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:38:37,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:38:37,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:38:37,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:38:37,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:38:37,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:38:37,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:38:37,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:38:37,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:38:37,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:38:37,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:38:37,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:38:37,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:38:37,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:38:37,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:38:37,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:38:37,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:38:37,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:38:37,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:38:37,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:38:37,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:38:37,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:38:37,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:38:37,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:38:37,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:38:37,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:38:37,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:38:37,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:38:37,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:38:37,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:38:37,750 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 18:38:37,794 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:38:37,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:38:37,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:38:37,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:38:37,796 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:38:37,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:38:37,797 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:38:37,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:38:37,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:38:37,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:38:37,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:38:37,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:38:37,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:38:37,800 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:38:37,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:38:37,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:38:37,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:38:37,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:38:37,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:38:37,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:38:37,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:38:37,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:38:37,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:38:37,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:38:37,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:38:37,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:38:37,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:38:37,802 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:38:37,802 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:38:37,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:38:38,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:38:38,102 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:38:38,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:38:38,107 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:38:38,107 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:38:38,108 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2020-10-11 18:38:38,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428a3ee51/57365e71b3e54cdf979a1d9bf34c2809/FLAG4abffad71 [2020-10-11 18:38:38,674 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:38:38,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2020-10-11 18:38:38,695 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428a3ee51/57365e71b3e54cdf979a1d9bf34c2809/FLAG4abffad71 [2020-10-11 18:38:38,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/428a3ee51/57365e71b3e54cdf979a1d9bf34c2809 [2020-10-11 18:38:38,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:38:38,981 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:38:38,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:38:38,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:38:38,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:38:38,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:38:38" (1/1) ... [2020-10-11 18:38:38,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bfcc862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:38, skipping insertion in model container [2020-10-11 18:38:38,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:38:38" (1/1) ... [2020-10-11 18:38:38,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:38:39,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:38:39,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:38:39,541 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:38:39,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:38:39,659 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:38:39,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:39 WrapperNode [2020-10-11 18:38:39,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:38:39,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:38:39,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:38:39,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:38:39,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:39" (1/1) ... [2020-10-11 18:38:39,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:39" (1/1) ... [2020-10-11 18:38:39,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:38:39,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:38:39,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:38:39,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:38:39,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:39" (1/1) ... [2020-10-11 18:38:39,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:39" (1/1) ... [2020-10-11 18:38:39,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:39" (1/1) ... [2020-10-11 18:38:39,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:39" (1/1) ... [2020-10-11 18:38:39,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:39" (1/1) ... [2020-10-11 18:38:39,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:39" (1/1) ... [2020-10-11 18:38:39,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:39" (1/1) ... [2020-10-11 18:38:39,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:38:39,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:38:39,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:38:39,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:38:39,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:39" (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 18:38:39,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:38:39,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:38:39,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:38:39,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:38:39,812 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:38:39,812 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:38:39,812 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:38:39,812 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:38:39,812 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:38:39,813 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:38:39,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:38:39,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:38:39,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:38:39,815 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 18:38:40,175 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:38:40,176 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:38:40,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:38:40 BoogieIcfgContainer [2020-10-11 18:38:40,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:38:40,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:38:40,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:38:40,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:38:40,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:38:38" (1/3) ... [2020-10-11 18:38:40,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7daa102b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:38:40, skipping insertion in model container [2020-10-11 18:38:40,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:38:39" (2/3) ... [2020-10-11 18:38:40,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7daa102b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:38:40, skipping insertion in model container [2020-10-11 18:38:40,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:38:40" (3/3) ... [2020-10-11 18:38:40,187 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.opt.i [2020-10-11 18:38:40,198 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:38:40,204 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:38:40,205 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:38:40,231 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,231 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,232 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,232 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,233 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,233 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,233 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,234 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,234 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,234 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,234 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,234 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,235 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,235 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,235 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,235 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,236 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,236 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,239 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,240 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,240 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,240 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,249 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,249 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,250 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,250 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,252 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,252 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,252 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,253 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:38:40,270 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:38:40,292 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:38:40,292 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:38:40,292 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:38:40,292 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:38:40,293 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:38:40,293 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:38:40,293 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:38:40,293 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:38:40,306 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-11 18:38:40,348 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-11 18:38:40,349 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:38:40,354 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-11 18:38:40,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-11 18:38:40,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-11 18:38:40,380 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2020-10-11 18:38:40,380 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:38:40,380 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:38:40,381 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 18:38:40,385 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:38:40,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:38:40,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1246835585, now seen corresponding path program 1 times [2020-10-11 18:38:40,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:38:40,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334439313] [2020-10-11 18:38:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:38:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:38:40,803 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 18:38:40,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334439313] [2020-10-11 18:38:40,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:38:40,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:38:40,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399949460] [2020-10-11 18:38:40,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:38:40,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:38:40,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:38:40,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:38:41,052 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 69 [2020-10-11 18:38:41,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 119 flow. Second operand 6 states. [2020-10-11 18:38:41,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:38:41,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 69 [2020-10-11 18:38:41,056 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:38:41,230 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-10-11 18:38:41,230 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:38:41,231 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 4/80 useless extension candidates. Maximal degree in co-relation 82. Up to 7 conditions per place. [2020-10-11 18:38:41,233 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 6 selfloop transitions, 2 changer transitions 11/64 dead transitions. [2020-10-11 18:38:41,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 173 flow [2020-10-11 18:38:41,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:38:41,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:38:41,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 553 transitions. [2020-10-11 18:38:41,252 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8904991948470209 [2020-10-11 18:38:41,253 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 553 transitions. [2020-10-11 18:38:41,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 553 transitions. [2020-10-11 18:38:41,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:38:41,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 553 transitions. [2020-10-11 18:38:41,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:38:41,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:38:41,274 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:38:41,277 INFO L185 Difference]: Start difference. First operand has 64 places, 55 transitions, 119 flow. Second operand 9 states and 553 transitions. [2020-10-11 18:38:41,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 173 flow [2020-10-11 18:38:41,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:38:41,287 INFO L241 Difference]: Finished difference. Result has 76 places, 53 transitions, 132 flow [2020-10-11 18:38:41,290 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=132, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2020-10-11 18:38:41,291 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2020-10-11 18:38:41,291 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 132 flow [2020-10-11 18:38:41,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:38:41,291 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:38:41,291 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 18:38:41,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:38:41,292 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:38:41,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:38:41,292 INFO L82 PathProgramCache]: Analyzing trace with hash -878880638, now seen corresponding path program 1 times [2020-10-11 18:38:41,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:38:41,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339854288] [2020-10-11 18:38:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:38:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:38:41,433 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 18:38:41,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339854288] [2020-10-11 18:38:41,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:38:41,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:38:41,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557561233] [2020-10-11 18:38:41,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:38:41,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:38:41,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:38:41,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:38:41,601 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 69 [2020-10-11 18:38:41,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 132 flow. Second operand 6 states. [2020-10-11 18:38:41,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:38:41,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 69 [2020-10-11 18:38:41,602 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:38:41,726 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-11 18:38:41,726 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-11 18:38:41,727 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 76 events. 3/76 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 2/78 useless extension candidates. Maximal degree in co-relation 115. Up to 7 conditions per place. [2020-10-11 18:38:41,727 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 6 selfloop transitions, 2 changer transitions 10/63 dead transitions. [2020-10-11 18:38:41,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 63 transitions, 206 flow [2020-10-11 18:38:41,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:38:41,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:38:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 551 transitions. [2020-10-11 18:38:41,731 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8872785829307569 [2020-10-11 18:38:41,731 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 551 transitions. [2020-10-11 18:38:41,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 551 transitions. [2020-10-11 18:38:41,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:38:41,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 551 transitions. [2020-10-11 18:38:41,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:38:41,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:38:41,736 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:38:41,736 INFO L185 Difference]: Start difference. First operand has 76 places, 53 transitions, 132 flow. Second operand 9 states and 551 transitions. [2020-10-11 18:38:41,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 63 transitions, 206 flow [2020-10-11 18:38:41,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 174 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:38:41,740 INFO L241 Difference]: Finished difference. Result has 76 places, 53 transitions, 136 flow [2020-10-11 18:38:41,741 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=136, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2020-10-11 18:38:41,742 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2020-10-11 18:38:41,742 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 136 flow [2020-10-11 18:38:41,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:38:41,742 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:38:41,742 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:38:41,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:38:41,743 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:38:41,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:38:41,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1976890141, now seen corresponding path program 1 times [2020-10-11 18:38:41,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:38:41,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922003389] [2020-10-11 18:38:41,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:38:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:38:41,870 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 18:38:41,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922003389] [2020-10-11 18:38:41,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:38:41,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:38:41,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035385972] [2020-10-11 18:38:41,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:38:41,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:38:41,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:38:41,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:38:42,134 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 69 [2020-10-11 18:38:42,134 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 136 flow. Second operand 7 states. [2020-10-11 18:38:42,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:38:42,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 69 [2020-10-11 18:38:42,135 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:38:42,292 INFO L129 PetriNetUnfolder]: 4/74 cut-off events. [2020-10-11 18:38:42,292 INFO L130 PetriNetUnfolder]: For 23/30 co-relation queries the response was YES. [2020-10-11 18:38:42,293 INFO L80 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 74 events. 4/74 cut-off events. For 23/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 2/76 useless extension candidates. Maximal degree in co-relation 125. Up to 7 conditions per place. [2020-10-11 18:38:42,294 INFO L132 encePairwiseOnDemand]: 61/69 looper letters, 6 selfloop transitions, 4 changer transitions 12/65 dead transitions. [2020-10-11 18:38:42,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 65 transitions, 231 flow [2020-10-11 18:38:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:38:42,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:38:42,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 594 transitions. [2020-10-11 18:38:42,298 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8608695652173913 [2020-10-11 18:38:42,298 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 594 transitions. [2020-10-11 18:38:42,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 594 transitions. [2020-10-11 18:38:42,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:38:42,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 594 transitions. [2020-10-11 18:38:42,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:38:42,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:38:42,303 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:38:42,303 INFO L185 Difference]: Start difference. First operand has 76 places, 53 transitions, 136 flow. Second operand 10 states and 594 transitions. [2020-10-11 18:38:42,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 65 transitions, 231 flow [2020-10-11 18:38:42,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 65 transitions, 197 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:38:42,307 INFO L241 Difference]: Finished difference. Result has 79 places, 53 transitions, 150 flow [2020-10-11 18:38:42,308 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=150, PETRI_PLACES=79, PETRI_TRANSITIONS=53} [2020-10-11 18:38:42,308 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 15 predicate places. [2020-10-11 18:38:42,308 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 53 transitions, 150 flow [2020-10-11 18:38:42,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:38:42,309 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:38:42,309 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 18:38:42,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:38:42,310 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:38:42,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:38:42,310 INFO L82 PathProgramCache]: Analyzing trace with hash 521713636, now seen corresponding path program 1 times [2020-10-11 18:38:42,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:38:42,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093065490] [2020-10-11 18:38:42,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:38:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:38:42,469 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 18:38:42,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093065490] [2020-10-11 18:38:42,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:38:42,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:38:42,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463906043] [2020-10-11 18:38:42,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:38:42,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:38:42,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:38:42,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:38:42,628 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 69 [2020-10-11 18:38:42,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 53 transitions, 150 flow. Second operand 7 states. [2020-10-11 18:38:42,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:38:42,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 69 [2020-10-11 18:38:42,630 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:38:42,771 INFO L129 PetriNetUnfolder]: 4/74 cut-off events. [2020-10-11 18:38:42,771 INFO L130 PetriNetUnfolder]: For 55/60 co-relation queries the response was YES. [2020-10-11 18:38:42,772 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 74 events. 4/74 cut-off events. For 55/60 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 3/76 useless extension candidates. Maximal degree in co-relation 135. Up to 7 conditions per place. [2020-10-11 18:38:42,773 INFO L132 encePairwiseOnDemand]: 61/69 looper letters, 6 selfloop transitions, 4 changer transitions 12/65 dead transitions. [2020-10-11 18:38:42,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 65 transitions, 251 flow [2020-10-11 18:38:42,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:38:42,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:38:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 594 transitions. [2020-10-11 18:38:42,776 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8608695652173913 [2020-10-11 18:38:42,776 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 594 transitions. [2020-10-11 18:38:42,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 594 transitions. [2020-10-11 18:38:42,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:38:42,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 594 transitions. [2020-10-11 18:38:42,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:38:42,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:38:42,780 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:38:42,780 INFO L185 Difference]: Start difference. First operand has 79 places, 53 transitions, 150 flow. Second operand 10 states and 594 transitions. [2020-10-11 18:38:42,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 65 transitions, 251 flow [2020-10-11 18:38:42,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 65 transitions, 201 flow, removed 20 selfloop flow, removed 10 redundant places. [2020-10-11 18:38:42,784 INFO L241 Difference]: Finished difference. Result has 80 places, 53 transitions, 154 flow [2020-10-11 18:38:42,785 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=154, PETRI_PLACES=80, PETRI_TRANSITIONS=53} [2020-10-11 18:38:42,785 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 16 predicate places. [2020-10-11 18:38:42,785 INFO L481 AbstractCegarLoop]: Abstraction has has 80 places, 53 transitions, 154 flow [2020-10-11 18:38:42,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:38:42,785 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:38:42,786 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:38:42,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:38:42,786 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:38:42,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:38:42,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1579759487, now seen corresponding path program 1 times [2020-10-11 18:38:42,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:38:42,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612718132] [2020-10-11 18:38:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:38:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:38:42,894 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 18:38:42,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612718132] [2020-10-11 18:38:42,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:38:42,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:38:42,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989367908] [2020-10-11 18:38:42,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:38:42,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:38:42,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:38:42,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:38:42,987 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:38:42,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 53 transitions, 154 flow. Second operand 6 states. [2020-10-11 18:38:42,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:38:42,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:38:42,988 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:38:43,140 INFO L129 PetriNetUnfolder]: 91/308 cut-off events. [2020-10-11 18:38:43,140 INFO L130 PetriNetUnfolder]: For 69/70 co-relation queries the response was YES. [2020-10-11 18:38:43,143 INFO L80 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 308 events. 91/308 cut-off events. For 69/70 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1569 event pairs, 25 based on Foata normal form. 8/305 useless extension candidates. Maximal degree in co-relation 538. Up to 81 conditions per place. [2020-10-11 18:38:43,145 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 10 selfloop transitions, 6 changer transitions 19/78 dead transitions. [2020-10-11 18:38:43,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 78 transitions, 274 flow [2020-10-11 18:38:43,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:38:43,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:38:43,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 541 transitions. [2020-10-11 18:38:43,148 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8711755233494364 [2020-10-11 18:38:43,148 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 541 transitions. [2020-10-11 18:38:43,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 541 transitions. [2020-10-11 18:38:43,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:38:43,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 541 transitions. [2020-10-11 18:38:43,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:38:43,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:38:43,152 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:38:43,152 INFO L185 Difference]: Start difference. First operand has 80 places, 53 transitions, 154 flow. Second operand 9 states and 541 transitions. [2020-10-11 18:38:43,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 78 transitions, 274 flow [2020-10-11 18:38:43,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 78 transitions, 244 flow, removed 9 selfloop flow, removed 11 redundant places. [2020-10-11 18:38:43,157 INFO L241 Difference]: Finished difference. Result has 77 places, 56 transitions, 180 flow [2020-10-11 18:38:43,157 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=180, PETRI_PLACES=77, PETRI_TRANSITIONS=56} [2020-10-11 18:38:43,157 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2020-10-11 18:38:43,157 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 56 transitions, 180 flow [2020-10-11 18:38:43,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:38:43,158 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:38:43,158 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 18:38:43,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:38:43,158 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:38:43,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:38:43,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1084558201, now seen corresponding path program 1 times [2020-10-11 18:38:43,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:38:43,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789698588] [2020-10-11 18:38:43,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:38:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:38:43,262 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 18:38:43,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789698588] [2020-10-11 18:38:43,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:38:43,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:38:43,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520283188] [2020-10-11 18:38:43,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:38:43,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:38:43,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:38:43,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:38:43,449 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:38:43,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 56 transitions, 180 flow. Second operand 7 states. [2020-10-11 18:38:43,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:38:43,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:38:43,450 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:38:43,624 INFO L129 PetriNetUnfolder]: 52/206 cut-off events. [2020-10-11 18:38:43,624 INFO L130 PetriNetUnfolder]: For 256/304 co-relation queries the response was YES. [2020-10-11 18:38:43,625 INFO L80 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 206 events. 52/206 cut-off events. For 256/304 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 853 event pairs, 0 based on Foata normal form. 14/216 useless extension candidates. Maximal degree in co-relation 560. Up to 75 conditions per place. [2020-10-11 18:38:43,626 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 10 selfloop transitions, 9 changer transitions 19/81 dead transitions. [2020-10-11 18:38:43,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 433 flow [2020-10-11 18:38:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:38:43,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:38:43,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 600 transitions. [2020-10-11 18:38:43,629 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2020-10-11 18:38:43,629 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 600 transitions. [2020-10-11 18:38:43,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 600 transitions. [2020-10-11 18:38:43,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:38:43,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 600 transitions. [2020-10-11 18:38:43,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:38:43,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:38:43,633 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:38:43,634 INFO L185 Difference]: Start difference. First operand has 77 places, 56 transitions, 180 flow. Second operand 10 states and 600 transitions. [2020-10-11 18:38:43,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 433 flow [2020-10-11 18:38:43,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 81 transitions, 409 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-11 18:38:43,638 INFO L241 Difference]: Finished difference. Result has 83 places, 59 transitions, 248 flow [2020-10-11 18:38:43,638 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=248, PETRI_PLACES=83, PETRI_TRANSITIONS=59} [2020-10-11 18:38:43,638 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 19 predicate places. [2020-10-11 18:38:43,638 INFO L481 AbstractCegarLoop]: Abstraction has has 83 places, 59 transitions, 248 flow [2020-10-11 18:38:43,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:38:43,639 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:38:43,639 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:38:43,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:38:43,639 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:38:43,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:38:43,640 INFO L82 PathProgramCache]: Analyzing trace with hash -690592727, now seen corresponding path program 1 times [2020-10-11 18:38:43,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:38:43,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882292746] [2020-10-11 18:38:43,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:38:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:38:43,739 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 18:38:43,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882292746] [2020-10-11 18:38:43,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:38:43,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:38:43,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56191594] [2020-10-11 18:38:43,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:38:43,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:38:43,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:38:43,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:38:43,838 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:38:43,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 59 transitions, 248 flow. Second operand 8 states. [2020-10-11 18:38:43,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:38:43,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:38:43,839 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:38:44,013 INFO L129 PetriNetUnfolder]: 16/99 cut-off events. [2020-10-11 18:38:44,014 INFO L130 PetriNetUnfolder]: For 365/414 co-relation queries the response was YES. [2020-10-11 18:38:44,014 INFO L80 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 99 events. 16/99 cut-off events. For 365/414 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 226 event pairs, 0 based on Foata normal form. 14/112 useless extension candidates. Maximal degree in co-relation 318. Up to 30 conditions per place. [2020-10-11 18:38:44,015 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 4 selfloop transitions, 12 changer transitions 13/72 dead transitions. [2020-10-11 18:38:44,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 72 transitions, 432 flow [2020-10-11 18:38:44,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:38:44,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:38:44,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 647 transitions. [2020-10-11 18:38:44,018 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.852437417654809 [2020-10-11 18:38:44,019 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 647 transitions. [2020-10-11 18:38:44,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 647 transitions. [2020-10-11 18:38:44,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:38:44,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 647 transitions. [2020-10-11 18:38:44,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:38:44,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:38:44,023 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:38:44,023 INFO L185 Difference]: Start difference. First operand has 83 places, 59 transitions, 248 flow. Second operand 11 states and 647 transitions. [2020-10-11 18:38:44,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 72 transitions, 432 flow [2020-10-11 18:38:44,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 72 transitions, 333 flow, removed 39 selfloop flow, removed 10 redundant places. [2020-10-11 18:38:44,028 INFO L241 Difference]: Finished difference. Result has 85 places, 59 transitions, 234 flow [2020-10-11 18:38:44,028 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=234, PETRI_PLACES=85, PETRI_TRANSITIONS=59} [2020-10-11 18:38:44,028 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 21 predicate places. [2020-10-11 18:38:44,029 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 59 transitions, 234 flow [2020-10-11 18:38:44,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:38:44,029 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:38:44,029 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:38:44,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:38:44,029 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:38:44,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:38:44,030 INFO L82 PathProgramCache]: Analyzing trace with hash 821428126, now seen corresponding path program 1 times [2020-10-11 18:38:44,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:38:44,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436527948] [2020-10-11 18:38:44,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:38:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:38:44,118 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 18:38:44,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436527948] [2020-10-11 18:38:44,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:38:44,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:38:44,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354556606] [2020-10-11 18:38:44,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:38:44,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:38:44,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:38:44,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:38:44,317 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 69 [2020-10-11 18:38:44,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 59 transitions, 234 flow. Second operand 7 states. [2020-10-11 18:38:44,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:38:44,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 69 [2020-10-11 18:38:44,318 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:38:44,399 INFO L129 PetriNetUnfolder]: 5/68 cut-off events. [2020-10-11 18:38:44,399 INFO L130 PetriNetUnfolder]: For 71/77 co-relation queries the response was YES. [2020-10-11 18:38:44,399 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 68 events. 5/68 cut-off events. For 71/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 82 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 135. Up to 11 conditions per place. [2020-10-11 18:38:44,400 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2020-10-11 18:38:44,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 57 transitions, 248 flow [2020-10-11 18:38:44,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:38:44,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:38:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 409 transitions. [2020-10-11 18:38:44,402 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8467908902691511 [2020-10-11 18:38:44,402 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 409 transitions. [2020-10-11 18:38:44,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 409 transitions. [2020-10-11 18:38:44,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:38:44,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 409 transitions. [2020-10-11 18:38:44,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:38:44,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:38:44,406 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:38:44,406 INFO L185 Difference]: Start difference. First operand has 85 places, 59 transitions, 234 flow. Second operand 7 states and 409 transitions. [2020-10-11 18:38:44,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 57 transitions, 248 flow [2020-10-11 18:38:44,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 57 transitions, 166 flow, removed 22 selfloop flow, removed 15 redundant places. [2020-10-11 18:38:44,409 INFO L241 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2020-10-11 18:38:44,409 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2020-10-11 18:38:44,410 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 6 predicate places. [2020-10-11 18:38:44,410 INFO L481 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2020-10-11 18:38:44,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:38:44,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 18:38:44,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:38:44 BasicIcfg [2020-10-11 18:38:44,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:38:44,420 INFO L168 Benchmark]: Toolchain (without parser) took 5437.51 ms. Allocated memory was 254.8 MB in the beginning and 423.6 MB in the end (delta: 168.8 MB). Free memory was 207.4 MB in the beginning and 228.2 MB in the end (delta: -20.7 MB). Peak memory consumption was 148.1 MB. Max. memory is 14.2 GB. [2020-10-11 18:38:44,421 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 254.8 MB. Free memory is still 228.7 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:38:44,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.61 ms. Allocated memory was 254.8 MB in the beginning and 325.6 MB in the end (delta: 70.8 MB). Free memory was 207.4 MB in the beginning and 278.4 MB in the end (delta: -71.0 MB). Peak memory consumption was 30.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:38:44,428 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.49 ms. Allocated memory is still 325.6 MB. Free memory is still 278.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:38:44,428 INFO L168 Benchmark]: Boogie Preprocessor took 27.61 ms. Allocated memory is still 325.6 MB. Free memory was 278.4 MB in the beginning and 275.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:38:44,429 INFO L168 Benchmark]: RCFGBuilder took 438.85 ms. Allocated memory is still 325.6 MB. Free memory was 275.9 MB in the beginning and 254.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-11 18:38:44,430 INFO L168 Benchmark]: TraceAbstraction took 4237.35 ms. Allocated memory was 325.6 MB in the beginning and 423.6 MB in the end (delta: 98.0 MB). Free memory was 254.0 MB in the beginning and 228.2 MB in the end (delta: 25.8 MB). Peak memory consumption was 123.9 MB. Max. memory is 14.2 GB. [2020-10-11 18:38:44,442 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 254.8 MB. Free memory is still 228.7 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 677.61 ms. Allocated memory was 254.8 MB in the beginning and 325.6 MB in the end (delta: 70.8 MB). Free memory was 207.4 MB in the beginning and 278.4 MB in the end (delta: -71.0 MB). Peak memory consumption was 30.5 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.49 ms. Allocated memory is still 325.6 MB. Free memory is still 278.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.61 ms. Allocated memory is still 325.6 MB. Free memory was 278.4 MB in the beginning and 275.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 438.85 ms. Allocated memory is still 325.6 MB. Free memory was 275.9 MB in the beginning and 254.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4237.35 ms. Allocated memory was 325.6 MB in the beginning and 423.6 MB in the end (delta: 98.0 MB). Free memory was 254.0 MB in the beginning and 228.2 MB in the end (delta: 25.8 MB). Peak memory consumption was 123.9 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 219 SDslu, 492 SDs, 0 SdLazy, 531 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 335 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 39679 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...