/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/safe005_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 17:43:34,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 17:43:34,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 17:43:34,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 17:43:34,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 17:43:34,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 17:43:34,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 17:43:34,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 17:43:34,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 17:43:34,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 17:43:34,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 17:43:34,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 17:43:34,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 17:43:34,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 17:43:34,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 17:43:34,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 17:43:34,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 17:43:34,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 17:43:34,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 17:43:34,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 17:43:34,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 17:43:34,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 17:43:34,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 17:43:34,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 17:43:34,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 17:43:34,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 17:43:34,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 17:43:34,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 17:43:34,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 17:43:34,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 17:43:34,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 17:43:34,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 17:43:34,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 17:43:34,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 17:43:34,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 17:43:34,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 17:43:34,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 17:43:34,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 17:43:34,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 17:43:34,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 17:43:34,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 17:43:34,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 17:43:34,698 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 17:43:34,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 17:43:34,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 17:43:34,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 17:43:34,703 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 17:43:34,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 17:43:34,703 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 17:43:34,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 17:43:34,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 17:43:34,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 17:43:34,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 17:43:34,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 17:43:34,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 17:43:34,704 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 17:43:34,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 17:43:34,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 17:43:34,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 17:43:34,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 17:43:34,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 17:43:34,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 17:43:34,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 17:43:34,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 17:43:34,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 17:43:34,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 17:43:34,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 17:43:34,708 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 17:43:34,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 17:43:34,709 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 17:43:34,709 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 17:43:34,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 17:43:35,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 17:43:35,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 17:43:35,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 17:43:35,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 17:43:35,028 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 17:43:35,029 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-10-09 17:43:35,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5017f9b6/33124b394204432dbb3c5ecdd06cdc43/FLAG5c1ce34a3 [2020-10-09 17:43:35,640 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 17:43:35,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-10-09 17:43:35,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5017f9b6/33124b394204432dbb3c5ecdd06cdc43/FLAG5c1ce34a3 [2020-10-09 17:43:35,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5017f9b6/33124b394204432dbb3c5ecdd06cdc43 [2020-10-09 17:43:35,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 17:43:35,949 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 17:43:35,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 17:43:35,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 17:43:35,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 17:43:35,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:43:35" (1/1) ... [2020-10-09 17:43:35,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e9cc404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:43:35, skipping insertion in model container [2020-10-09 17:43:35,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:43:35" (1/1) ... [2020-10-09 17:43:35,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 17:43:36,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 17:43:36,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:43:36,499 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 17:43:36,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:43:36,636 INFO L208 MainTranslator]: Completed translation [2020-10-09 17:43:36,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:43:36 WrapperNode [2020-10-09 17:43:36,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 17:43:36,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 17:43:36,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 17:43:36,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 17:43:36,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:43:36" (1/1) ... [2020-10-09 17:43:36,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:43:36" (1/1) ... [2020-10-09 17:43:36,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 17:43:36,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 17:43:36,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 17:43:36,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 17:43:36,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:43:36" (1/1) ... [2020-10-09 17:43:36,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:43:36" (1/1) ... [2020-10-09 17:43:36,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:43:36" (1/1) ... [2020-10-09 17:43:36,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:43:36" (1/1) ... [2020-10-09 17:43:36,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:43:36" (1/1) ... [2020-10-09 17:43:36,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:43:36" (1/1) ... [2020-10-09 17:43:36,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:43:36" (1/1) ... [2020-10-09 17:43:36,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 17:43:36,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 17:43:36,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 17:43:36,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 17:43:36,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:43:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 17:43:36,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 17:43:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 17:43:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 17:43:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 17:43:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 17:43:36,771 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 17:43:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 17:43:36,772 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 17:43:36,772 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 17:43:36,772 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 17:43:36,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 17:43:36,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 17:43:36,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 17:43:36,774 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 17:43:37,114 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 17:43:37,114 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 17:43:37,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:43:37 BoogieIcfgContainer [2020-10-09 17:43:37,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 17:43:37,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 17:43:37,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 17:43:37,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 17:43:37,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 05:43:35" (1/3) ... [2020-10-09 17:43:37,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78400f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:43:37, skipping insertion in model container [2020-10-09 17:43:37,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:43:36" (2/3) ... [2020-10-09 17:43:37,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78400f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:43:37, skipping insertion in model container [2020-10-09 17:43:37,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:43:37" (3/3) ... [2020-10-09 17:43:37,131 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt.i [2020-10-09 17:43:37,143 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 17:43:37,151 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 17:43:37,153 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 17:43:37,181 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,184 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,184 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,184 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,184 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,185 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,186 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,186 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,186 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,186 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,187 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,190 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,190 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,191 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,191 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,198 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,198 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,198 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,201 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,201 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:43:37,220 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-09 17:43:37,241 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 17:43:37,241 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 17:43:37,241 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 17:43:37,241 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 17:43:37,242 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 17:43:37,242 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 17:43:37,242 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 17:43:37,242 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 17:43:37,256 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-09 17:43:37,297 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-09 17:43:37,297 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:43:37,302 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. [2020-10-09 17:43:37,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-09 17:43:37,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-09 17:43:37,327 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-09 17:43:37,328 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:43:37,328 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:43:37,329 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:43:37,329 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:43:37,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:43:37,336 INFO L82 PathProgramCache]: Analyzing trace with hash -2081382383, now seen corresponding path program 1 times [2020-10-09 17:43:37,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:43:37,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67623378] [2020-10-09 17:43:37,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 17:43:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:43:37,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:43:37,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:43:37,546 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:43:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:43:37,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:43:37,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:43:37,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67623378] [2020-10-09 17:43:37,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:43:37,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:43:37,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737130667] [2020-10-09 17:43:37,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:43:37,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:43:37,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:43:37,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:43:37,924 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-09 17:43:37,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 121 flow. Second operand 8 states. [2020-10-09 17:43:37,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:43:37,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-09 17:43:37,929 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:43:38,027 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-09 17:43:38,028 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:43:38,029 INFO L80 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 115 event pairs, 0 based on Foata normal form. 4/78 useless extension candidates. Maximal degree in co-relation 80. Up to 7 conditions per place. [2020-10-09 17:43:38,030 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 6 selfloop transitions, 2 changer transitions 11/65 dead transitions. [2020-10-09 17:43:38,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 65 transitions, 175 flow [2020-10-09 17:43:38,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:43:38,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:43:38,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 562 transitions. [2020-10-09 17:43:38,050 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8920634920634921 [2020-10-09 17:43:38,051 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 562 transitions. [2020-10-09 17:43:38,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 562 transitions. [2020-10-09 17:43:38,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:43:38,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 562 transitions. [2020-10-09 17:43:38,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:43:38,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:43:38,071 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:43:38,073 INFO L185 Difference]: Start difference. First operand has 65 places, 56 transitions, 121 flow. Second operand 9 states and 562 transitions. [2020-10-09 17:43:38,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 65 transitions, 175 flow [2020-10-09 17:43:38,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 65 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-09 17:43:38,083 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 134 flow [2020-10-09 17:43:38,086 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} [2020-10-09 17:43:38,087 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-09 17:43:38,087 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 134 flow [2020-10-09 17:43:38,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:43:38,088 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:43:38,088 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] [2020-10-09 17:43:38,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 17:43:38,310 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:43:38,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:43:38,311 INFO L82 PathProgramCache]: Analyzing trace with hash -289977898, now seen corresponding path program 1 times [2020-10-09 17:43:38,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:43:38,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782887984] [2020-10-09 17:43:38,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 17:43:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:43:38,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:43:38,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:43:38,404 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:43:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:43:38,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:43:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:43:38,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782887984] [2020-10-09 17:43:38,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:43:38,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:43:38,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519971363] [2020-10-09 17:43:38,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:43:38,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:43:38,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:43:38,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:43:38,721 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-09 17:43:38,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 134 flow. Second operand 8 states. [2020-10-09 17:43:38,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:43:38,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-09 17:43:38,723 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:43:38,859 INFO L129 PetriNetUnfolder]: 18/135 cut-off events. [2020-10-09 17:43:38,860 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2020-10-09 17:43:38,861 INFO L80 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 135 events. 18/135 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 466 event pairs, 0 based on Foata normal form. 5/138 useless extension candidates. Maximal degree in co-relation 227. Up to 15 conditions per place. [2020-10-09 17:43:38,862 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 10 selfloop transitions, 5 changer transitions 23/83 dead transitions. [2020-10-09 17:43:38,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 83 transitions, 308 flow [2020-10-09 17:43:38,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 17:43:38,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-09 17:43:38,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 808 transitions. [2020-10-09 17:43:38,866 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8879120879120879 [2020-10-09 17:43:38,866 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 808 transitions. [2020-10-09 17:43:38,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 808 transitions. [2020-10-09 17:43:38,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:43:38,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 808 transitions. [2020-10-09 17:43:38,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-09 17:43:38,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-09 17:43:38,871 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-09 17:43:38,871 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 134 flow. Second operand 13 states and 808 transitions. [2020-10-09 17:43:38,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 83 transitions, 308 flow [2020-10-09 17:43:38,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 83 transitions, 256 flow, removed 24 selfloop flow, removed 8 redundant places. [2020-10-09 17:43:38,876 INFO L241 Difference]: Finished difference. Result has 85 places, 56 transitions, 160 flow [2020-10-09 17:43:38,876 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=160, PETRI_PLACES=85, PETRI_TRANSITIONS=56} [2020-10-09 17:43:38,877 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2020-10-09 17:43:38,877 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 56 transitions, 160 flow [2020-10-09 17:43:38,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:43:38,877 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:43:38,878 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:43:39,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 17:43:39,089 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:43:39,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:43:39,090 INFO L82 PathProgramCache]: Analyzing trace with hash 728556469, now seen corresponding path program 1 times [2020-10-09 17:43:39,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:43:39,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084406819] [2020-10-09 17:43:39,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 17:43:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:43:39,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:43:39,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:43:39,183 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:43:39,185 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:43:39,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:43:39,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:43:39,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:43:39,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084406819] [2020-10-09 17:43:39,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:43:39,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 9 [2020-10-09 17:43:39,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753911107] [2020-10-09 17:43:39,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:43:39,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:43:39,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:43:39,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:43:39,448 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-09 17:43:39,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 56 transitions, 160 flow. Second operand 9 states. [2020-10-09 17:43:39,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:43:39,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-09 17:43:39,449 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:43:39,581 INFO L129 PetriNetUnfolder]: 10/140 cut-off events. [2020-10-09 17:43:39,582 INFO L130 PetriNetUnfolder]: For 134/180 co-relation queries the response was YES. [2020-10-09 17:43:39,583 INFO L80 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 140 events. 10/140 cut-off events. For 134/180 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 507 event pairs, 2 based on Foata normal form. 6/143 useless extension candidates. Maximal degree in co-relation 262. Up to 20 conditions per place. [2020-10-09 17:43:39,584 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 13 selfloop transitions, 4 changer transitions 12/72 dead transitions. [2020-10-09 17:43:39,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 72 transitions, 311 flow [2020-10-09 17:43:39,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 17:43:39,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-09 17:43:39,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 657 transitions. [2020-10-09 17:43:39,587 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8532467532467533 [2020-10-09 17:43:39,587 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 657 transitions. [2020-10-09 17:43:39,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 657 transitions. [2020-10-09 17:43:39,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:43:39,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 657 transitions. [2020-10-09 17:43:39,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-09 17:43:39,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-09 17:43:39,591 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-09 17:43:39,591 INFO L185 Difference]: Start difference. First operand has 85 places, 56 transitions, 160 flow. Second operand 11 states and 657 transitions. [2020-10-09 17:43:39,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 72 transitions, 311 flow [2020-10-09 17:43:39,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 251 flow, removed 30 selfloop flow, removed 9 redundant places. [2020-10-09 17:43:39,596 INFO L241 Difference]: Finished difference. Result has 85 places, 56 transitions, 169 flow [2020-10-09 17:43:39,597 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=169, PETRI_PLACES=85, PETRI_TRANSITIONS=56} [2020-10-09 17:43:39,597 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2020-10-09 17:43:39,597 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 56 transitions, 169 flow [2020-10-09 17:43:39,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:43:39,597 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:43:39,597 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:43:39,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 17:43:39,809 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:43:39,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:43:39,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1299679661, now seen corresponding path program 2 times [2020-10-09 17:43:39,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:43:39,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658166641] [2020-10-09 17:43:39,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 17:43:39,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-09 17:43:39,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 17:43:39,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:43:39,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:43:39,887 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:43:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:43:39,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:43:39,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:43:39,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658166641] [2020-10-09 17:43:39,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:43:39,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 17:43:39,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198998238] [2020-10-09 17:43:39,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:43:39,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:43:39,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:43:39,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:43:40,282 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-09 17:43:40,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 56 transitions, 169 flow. Second operand 9 states. [2020-10-09 17:43:40,283 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:43:40,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-09 17:43:40,284 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:43:40,394 INFO L129 PetriNetUnfolder]: 6/133 cut-off events. [2020-10-09 17:43:40,395 INFO L130 PetriNetUnfolder]: For 138/206 co-relation queries the response was YES. [2020-10-09 17:43:40,396 INFO L80 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 133 events. 6/133 cut-off events. For 138/206 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 522 event pairs, 1 based on Foata normal form. 7/136 useless extension candidates. Maximal degree in co-relation 268. Up to 13 conditions per place. [2020-10-09 17:43:40,396 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 7 selfloop transitions, 4 changer transitions 12/66 dead transitions. [2020-10-09 17:43:40,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 66 transitions, 281 flow [2020-10-09 17:43:40,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 17:43:40,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-09 17:43:40,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 423 transitions. [2020-10-09 17:43:40,399 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.863265306122449 [2020-10-09 17:43:40,399 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 423 transitions. [2020-10-09 17:43:40,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 423 transitions. [2020-10-09 17:43:40,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:43:40,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 423 transitions. [2020-10-09 17:43:40,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-09 17:43:40,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-09 17:43:40,402 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-09 17:43:40,402 INFO L185 Difference]: Start difference. First operand has 85 places, 56 transitions, 169 flow. Second operand 7 states and 423 transitions. [2020-10-09 17:43:40,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 66 transitions, 281 flow [2020-10-09 17:43:40,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 66 transitions, 238 flow, removed 12 selfloop flow, removed 10 redundant places. [2020-10-09 17:43:40,406 INFO L241 Difference]: Finished difference. Result has 78 places, 54 transitions, 154 flow [2020-10-09 17:43:40,406 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=154, PETRI_PLACES=78, PETRI_TRANSITIONS=54} [2020-10-09 17:43:40,406 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 13 predicate places. [2020-10-09 17:43:40,406 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 54 transitions, 154 flow [2020-10-09 17:43:40,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:43:40,407 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:43:40,407 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] [2020-10-09 17:43:40,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 17:43:40,619 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:43:40,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:43:40,620 INFO L82 PathProgramCache]: Analyzing trace with hash 138333028, now seen corresponding path program 1 times [2020-10-09 17:43:40,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:43:40,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551858846] [2020-10-09 17:43:40,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-09 17:43:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:43:40,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 17:43:40,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:43:40,699 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:43:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:43:40,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:43:40,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:43:40,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551858846] [2020-10-09 17:43:40,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:43:40,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:43:40,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349294604] [2020-10-09 17:43:40,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:43:40,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:43:40,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:43:40,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:43:40,867 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-09 17:43:40,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 54 transitions, 154 flow. Second operand 8 states. [2020-10-09 17:43:40,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:43:40,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-09 17:43:40,868 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:43:41,073 INFO L129 PetriNetUnfolder]: 76/260 cut-off events. [2020-10-09 17:43:41,074 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2020-10-09 17:43:41,076 INFO L80 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 260 events. 76/260 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1268 event pairs, 0 based on Foata normal form. 10/261 useless extension candidates. Maximal degree in co-relation 449. Up to 41 conditions per place. [2020-10-09 17:43:41,079 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 9 changer transitions 29/92 dead transitions. [2020-10-09 17:43:41,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 326 flow [2020-10-09 17:43:41,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 17:43:41,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-09 17:43:41,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 735 transitions. [2020-10-09 17:43:41,082 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.875 [2020-10-09 17:43:41,082 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 735 transitions. [2020-10-09 17:43:41,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 735 transitions. [2020-10-09 17:43:41,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:43:41,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 735 transitions. [2020-10-09 17:43:41,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-09 17:43:41,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-09 17:43:41,090 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-09 17:43:41,091 INFO L185 Difference]: Start difference. First operand has 78 places, 54 transitions, 154 flow. Second operand 12 states and 735 transitions. [2020-10-09 17:43:41,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 326 flow [2020-10-09 17:43:41,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 92 transitions, 310 flow, removed 4 selfloop flow, removed 7 redundant places. [2020-10-09 17:43:41,095 INFO L241 Difference]: Finished difference. Result has 88 places, 60 transitions, 236 flow [2020-10-09 17:43:41,095 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=68, 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=12, PETRI_FLOW=236, PETRI_PLACES=88, PETRI_TRANSITIONS=60} [2020-10-09 17:43:41,095 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 23 predicate places. [2020-10-09 17:43:41,095 INFO L481 AbstractCegarLoop]: Abstraction has has 88 places, 60 transitions, 236 flow [2020-10-09 17:43:41,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:43:41,096 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:43:41,096 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] [2020-10-09 17:43:41,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 17:43:41,308 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:43:41,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:43:41,308 INFO L82 PathProgramCache]: Analyzing trace with hash -174044116, now seen corresponding path program 1 times [2020-10-09 17:43:41,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:43:41,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456970269] [2020-10-09 17:43:41,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-09 17:43:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:43:41,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 17:43:41,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:43:41,384 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:43:41,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:43:41,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:43:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:43:41,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456970269] [2020-10-09 17:43:41,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:43:41,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2020-10-09 17:43:41,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352181562] [2020-10-09 17:43:41,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 17:43:41,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:43:41,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 17:43:41,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-09 17:43:41,529 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-09 17:43:41,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 60 transitions, 236 flow. Second operand 10 states. [2020-10-09 17:43:41,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:43:41,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-09 17:43:41,530 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:43:41,676 INFO L129 PetriNetUnfolder]: 17/119 cut-off events. [2020-10-09 17:43:41,676 INFO L130 PetriNetUnfolder]: For 403/432 co-relation queries the response was YES. [2020-10-09 17:43:41,677 INFO L80 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 119 events. 17/119 cut-off events. For 403/432 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 310 event pairs, 0 based on Foata normal form. 19/137 useless extension candidates. Maximal degree in co-relation 343. Up to 30 conditions per place. [2020-10-09 17:43:41,678 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 4 selfloop transitions, 12 changer transitions 13/73 dead transitions. [2020-10-09 17:43:41,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 73 transitions, 419 flow [2020-10-09 17:43:41,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 17:43:41,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-09 17:43:41,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 658 transitions. [2020-10-09 17:43:41,683 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8545454545454545 [2020-10-09 17:43:41,683 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 658 transitions. [2020-10-09 17:43:41,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 658 transitions. [2020-10-09 17:43:41,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:43:41,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 658 transitions. [2020-10-09 17:43:41,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-09 17:43:41,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-09 17:43:41,688 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-09 17:43:41,688 INFO L185 Difference]: Start difference. First operand has 88 places, 60 transitions, 236 flow. Second operand 11 states and 658 transitions. [2020-10-09 17:43:41,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 73 transitions, 419 flow [2020-10-09 17:43:41,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 73 transitions, 319 flow, removed 41 selfloop flow, removed 10 redundant places. [2020-10-09 17:43:41,692 INFO L241 Difference]: Finished difference. Result has 88 places, 60 transitions, 232 flow [2020-10-09 17:43:41,692 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=72, 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=232, PETRI_PLACES=88, PETRI_TRANSITIONS=60} [2020-10-09 17:43:41,693 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 23 predicate places. [2020-10-09 17:43:41,693 INFO L481 AbstractCegarLoop]: Abstraction has has 88 places, 60 transitions, 232 flow [2020-10-09 17:43:41,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 17:43:41,693 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:43:41,693 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] [2020-10-09 17:43:41,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-09 17:43:41,901 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:43:41,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:43:41,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1642159225, now seen corresponding path program 1 times [2020-10-09 17:43:41,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:43:41,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451473620] [2020-10-09 17:43:41,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-09 17:43:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:43:41,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:43:41,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:43:41,975 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:43:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:43:42,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:43:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:43:42,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451473620] [2020-10-09 17:43:42,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:43:42,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 17:43:42,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750696613] [2020-10-09 17:43:42,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:43:42,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:43:42,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:43:42,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:43:42,255 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-09 17:43:42,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 60 transitions, 232 flow. Second operand 9 states. [2020-10-09 17:43:42,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:43:42,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-09 17:43:42,256 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:43:42,327 INFO L129 PetriNetUnfolder]: 6/78 cut-off events. [2020-10-09 17:43:42,327 INFO L130 PetriNetUnfolder]: For 65/70 co-relation queries the response was YES. [2020-10-09 17:43:42,328 INFO L80 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 78 events. 6/78 cut-off events. For 65/70 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 111 event pairs, 0 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 154. Up to 13 conditions per place. [2020-10-09 17:43:42,328 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2020-10-09 17:43:42,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 58 transitions, 246 flow [2020-10-09 17:43:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 17:43:42,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-09 17:43:42,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 416 transitions. [2020-10-09 17:43:42,331 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8489795918367347 [2020-10-09 17:43:42,331 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 416 transitions. [2020-10-09 17:43:42,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 416 transitions. [2020-10-09 17:43:42,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:43:42,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 416 transitions. [2020-10-09 17:43:42,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-09 17:43:42,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-09 17:43:42,335 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-09 17:43:42,335 INFO L185 Difference]: Start difference. First operand has 88 places, 60 transitions, 232 flow. Second operand 7 states and 416 transitions. [2020-10-09 17:43:42,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 58 transitions, 246 flow [2020-10-09 17:43:42,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 58 transitions, 170 flow, removed 19 selfloop flow, removed 15 redundant places. [2020-10-09 17:43:42,338 INFO L241 Difference]: Finished difference. Result has 73 places, 0 transitions, 0 flow [2020-10-09 17:43:42,338 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=67, 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=73, PETRI_TRANSITIONS=0} [2020-10-09 17:43:42,338 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2020-10-09 17:43:42,339 INFO L481 AbstractCegarLoop]: Abstraction has has 73 places, 0 transitions, 0 flow [2020-10-09 17:43:42,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:43:42,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-09 17:43:42,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 05:43:42 BasicIcfg [2020-10-09 17:43:42,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 17:43:42,563 INFO L168 Benchmark]: Toolchain (without parser) took 6613.25 ms. Allocated memory was 252.2 MB in the beginning and 425.7 MB in the end (delta: 173.5 MB). Free memory was 204.8 MB in the beginning and 182.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 195.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:43:42,564 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 252.2 MB. Free memory was 227.7 MB in the beginning and 226.9 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-09 17:43:42,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.69 ms. Allocated memory was 252.2 MB in the beginning and 314.6 MB in the end (delta: 62.4 MB). Free memory was 204.8 MB in the beginning and 265.5 MB in the end (delta: -60.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 14.2 GB. [2020-10-09 17:43:42,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.24 ms. Allocated memory is still 314.6 MB. Free memory was 265.5 MB in the beginning and 263.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-09 17:43:42,566 INFO L168 Benchmark]: Boogie Preprocessor took 26.76 ms. Allocated memory is still 314.6 MB. Free memory was 263.8 MB in the beginning and 262.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-09 17:43:42,567 INFO L168 Benchmark]: RCFGBuilder took 403.62 ms. Allocated memory is still 314.6 MB. Free memory was 262.1 MB in the beginning and 239.2 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 14.2 GB. [2020-10-09 17:43:42,568 INFO L168 Benchmark]: TraceAbstraction took 5440.65 ms. Allocated memory was 314.6 MB in the beginning and 425.7 MB in the end (delta: 111.1 MB). Free memory was 239.2 MB in the beginning and 182.8 MB in the end (delta: 56.4 MB). Peak memory consumption was 167.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:43:42,573 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 252.2 MB. Free memory was 227.7 MB in the beginning and 226.9 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 686.69 ms. Allocated memory was 252.2 MB in the beginning and 314.6 MB in the end (delta: 62.4 MB). Free memory was 204.8 MB in the beginning and 265.5 MB in the end (delta: -60.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.24 ms. Allocated memory is still 314.6 MB. Free memory was 265.5 MB in the beginning and 263.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.76 ms. Allocated memory is still 314.6 MB. Free memory was 263.8 MB in the beginning and 262.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 403.62 ms. Allocated memory is still 314.6 MB. Free memory was 262.1 MB in the beginning and 239.2 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5440.65 ms. Allocated memory was 314.6 MB in the beginning and 425.7 MB in the end (delta: 111.1 MB). Free memory was 239.2 MB in the beginning and 182.8 MB in the end (delta: 56.4 MB). Peak memory consumption was 167.5 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: 5.3s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 308 SDslu, 570 SDs, 0 SdLazy, 535 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 618 GetRequests, 514 SyntacticMatches, 15 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 295 NumberOfCodeBlocks, 295 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 576 ConstructedInterpolants, 0 QuantifiedInterpolants, 63489 SizeOfPredicates, 57 NumberOfNonLiveVariables, 758 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...