/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:11:31,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:11:31,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:11:31,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:11:31,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:11:31,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:11:31,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:11:31,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:11:31,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:11:31,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:11:31,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:11:31,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:11:31,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:11:31,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:11:31,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:11:31,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:11:31,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:11:31,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:11:31,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:11:31,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:11:31,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:11:31,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:11:31,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:11:31,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:11:31,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 05:11:31,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:11:31,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:11:31,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:11:31,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:11:31,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:11:31,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:11:31,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:11:31,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:11:31,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:11:31,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:11:31,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:11:31,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:11:31,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:11:31,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:11:31,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:11:31,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:11:31,877 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:11:31,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:11:31,877 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:11:31,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:11:31,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:11:31,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:11:31,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:11:31,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:11:31,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:11:31,878 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:11:31,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:11:31,879 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:11:31,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:11:31,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:11:31,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:11:31,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:11:31,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:11:31,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:11:31,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:11:31,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:11:31,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:11:31,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:11:31,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:11:31,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:11:31,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:11:32,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:11:32,161 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:11:32,165 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:11:32,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:11:32,167 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:11:32,167 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2020-10-16 05:11:32,233 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f4215b87/9e04c1885fbc491bb04d2f6fb251a20c/FLAG22f8e44cc [2020-10-16 05:11:32,724 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:11:32,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.opt.i [2020-10-16 05:11:32,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f4215b87/9e04c1885fbc491bb04d2f6fb251a20c/FLAG22f8e44cc [2020-10-16 05:11:32,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f4215b87/9e04c1885fbc491bb04d2f6fb251a20c [2020-10-16 05:11:33,008 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:11:33,010 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:11:33,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:11:33,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:11:33,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:11:33,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:11:33" (1/1) ... [2020-10-16 05:11:33,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e2b02d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:33, skipping insertion in model container [2020-10-16 05:11:33,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:11:33" (1/1) ... [2020-10-16 05:11:33,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:11:33,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:11:33,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:11:33,686 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:11:33,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:11:33,811 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:11:33,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:33 WrapperNode [2020-10-16 05:11:33,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:11:33,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:11:33,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:11:33,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:11:33,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:33" (1/1) ... [2020-10-16 05:11:33,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:33" (1/1) ... [2020-10-16 05:11:33,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:11:33,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:11:33,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:11:33,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:11:33,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:33" (1/1) ... [2020-10-16 05:11:33,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:33" (1/1) ... [2020-10-16 05:11:33,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:33" (1/1) ... [2020-10-16 05:11:33,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:33" (1/1) ... [2020-10-16 05:11:33,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:33" (1/1) ... [2020-10-16 05:11:33,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:33" (1/1) ... [2020-10-16 05:11:33,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:33" (1/1) ... [2020-10-16 05:11:33,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:11:33,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:11:33,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:11:33,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:11:33,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:11:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:11:33,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:11:33,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:11:33,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:11:33,958 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:11:33,958 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:11:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:11:33,959 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:11:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:11:33,959 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:11:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:11:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:11:33,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:11:33,962 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:11:34,329 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:11:34,330 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:11:34,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:11:34 BoogieIcfgContainer [2020-10-16 05:11:34,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:11:34,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:11:34,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:11:34,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:11:34,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:11:33" (1/3) ... [2020-10-16 05:11:34,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef4f7ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:11:34, skipping insertion in model container [2020-10-16 05:11:34,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:33" (2/3) ... [2020-10-16 05:11:34,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef4f7ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:11:34, skipping insertion in model container [2020-10-16 05:11:34,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:11:34" (3/3) ... [2020-10-16 05:11:34,341 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_tso.opt.i [2020-10-16 05:11:34,353 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:11:34,359 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:11:34,360 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:11:34,387 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,387 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,388 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,388 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,389 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,389 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,389 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,390 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,390 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,391 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,391 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,391 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,392 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,392 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,396 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,396 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,397 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,397 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,403 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,403 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,404 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,404 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,407 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,407 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:34,430 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:11:34,452 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:11:34,452 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:11:34,452 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:11:34,452 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:11:34,453 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:11:34,453 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:11:34,453 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:11:34,453 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:11:34,466 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:11:34,509 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 05:11:34,510 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:34,515 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 49 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. [2020-10-16 05:11:34,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:11:34,521 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 05:11:34,523 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:11:34,526 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:11:34,528 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:11:34,529 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 05:11:34,553 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 05:11:34,554 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:34,554 INFO L80 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 05:11:34,558 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:11:35,975 INFO L132 LiptonReduction]: Checked pairs total: 1608 [2020-10-16 05:11:35,975 INFO L134 LiptonReduction]: Total number of compositions: 44 [2020-10-16 05:11:35,978 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1457 [2020-10-16 05:11:35,987 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2020-10-16 05:11:35,987 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:35,987 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:35,988 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:35,989 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:35,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:35,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1901339760, now seen corresponding path program 1 times [2020-10-16 05:11:36,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:36,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993207832] [2020-10-16 05:11:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:36,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993207832] [2020-10-16 05:11:36,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:36,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:11:36,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830920312] [2020-10-16 05:11:36,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:11:36,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:36,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:11:36,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:11:36,270 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 114 [2020-10-16 05:11:36,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 05:11:36,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:36,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 114 [2020-10-16 05:11:36,276 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:36,306 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:11:36,306 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:36,307 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:11:36,308 INFO L132 encePairwiseOnDemand]: 111/114 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 05:11:36,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 05:11:36,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:11:36,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:11:36,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2020-10-16 05:11:36,326 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8538011695906432 [2020-10-16 05:11:36,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2020-10-16 05:11:36,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2020-10-16 05:11:36,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:36,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2020-10-16 05:11:36,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:11:36,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:11:36,343 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:11:36,346 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 292 transitions. [2020-10-16 05:11:36,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 05:11:36,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:11:36,352 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 05:11:36,355 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 05:11:36,356 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:11:36,356 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 05:11:36,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:11:36,357 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:36,357 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:36,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:11:36,358 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:36,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:36,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1826382019, now seen corresponding path program 1 times [2020-10-16 05:11:36,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:36,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673956813] [2020-10-16 05:11:36,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:36,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673956813] [2020-10-16 05:11:36,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:36,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:11:36,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008700744] [2020-10-16 05:11:36,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:11:36,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:36,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:11:36,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:11:36,430 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 114 [2020-10-16 05:11:36,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states. [2020-10-16 05:11:36,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:36,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 114 [2020-10-16 05:11:36,431 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:36,464 INFO L129 PetriNetUnfolder]: 10/50 cut-off events. [2020-10-16 05:11:36,465 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 05:11:36,466 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 50 events. 10/50 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 160 event pairs, 4 based on Foata normal form. 4/51 useless extension candidates. Maximal degree in co-relation 93. Up to 17 conditions per place. [2020-10-16 05:11:36,466 INFO L132 encePairwiseOnDemand]: 111/114 looper letters, 6 selfloop transitions, 2 changer transitions 1/20 dead transitions. [2020-10-16 05:11:36,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 75 flow [2020-10-16 05:11:36,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:11:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:11:36,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 05:11:36,470 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8450292397660819 [2020-10-16 05:11:36,470 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 05:11:36,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 05:11:36,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:36,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 05:11:36,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:11:36,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:11:36,475 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:11:36,475 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states and 289 transitions. [2020-10-16 05:11:36,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 75 flow [2020-10-16 05:11:36,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 20 transitions, 69 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:11:36,492 INFO L241 Difference]: Finished difference. Result has 28 places, 17 transitions, 52 flow [2020-10-16 05:11:36,492 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2020-10-16 05:11:36,493 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 05:11:36,493 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 52 flow [2020-10-16 05:11:36,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:11:36,493 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:36,493 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:36,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:11:36,494 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:36,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:36,494 INFO L82 PathProgramCache]: Analyzing trace with hash 783266899, now seen corresponding path program 1 times [2020-10-16 05:11:36,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:36,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591640132] [2020-10-16 05:11:36,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:36,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:36,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591640132] [2020-10-16 05:11:36,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:36,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:11:36,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972316947] [2020-10-16 05:11:36,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:11:36,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:36,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:11:36,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:11:36,582 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2020-10-16 05:11:36,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 52 flow. Second operand 4 states. [2020-10-16 05:11:36,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:36,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2020-10-16 05:11:36,583 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:36,627 INFO L129 PetriNetUnfolder]: 28/69 cut-off events. [2020-10-16 05:11:36,628 INFO L130 PetriNetUnfolder]: For 35/39 co-relation queries the response was YES. [2020-10-16 05:11:36,629 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 69 events. 28/69 cut-off events. For 35/39 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 215 event pairs, 2 based on Foata normal form. 9/76 useless extension candidates. Maximal degree in co-relation 146. Up to 33 conditions per place. [2020-10-16 05:11:36,629 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 7 selfloop transitions, 5 changer transitions 1/24 dead transitions. [2020-10-16 05:11:36,630 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 92 flow [2020-10-16 05:11:36,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:11:36,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:11:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2020-10-16 05:11:36,633 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7609649122807017 [2020-10-16 05:11:36,633 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 347 transitions. [2020-10-16 05:11:36,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 347 transitions. [2020-10-16 05:11:36,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:36,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 347 transitions. [2020-10-16 05:11:36,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:11:36,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:11:36,636 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:11:36,636 INFO L185 Difference]: Start difference. First operand has 28 places, 17 transitions, 52 flow. Second operand 4 states and 347 transitions. [2020-10-16 05:11:36,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 92 flow [2020-10-16 05:11:36,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:11:36,638 INFO L241 Difference]: Finished difference. Result has 31 places, 20 transitions, 82 flow [2020-10-16 05:11:36,639 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2020-10-16 05:11:36,639 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 05:11:36,639 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 82 flow [2020-10-16 05:11:36,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:11:36,639 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:36,640 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:36,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:11:36,640 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:36,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:36,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1619397807, now seen corresponding path program 1 times [2020-10-16 05:11:36,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:36,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567867826] [2020-10-16 05:11:36,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:36,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567867826] [2020-10-16 05:11:36,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:36,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:11:36,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015581300] [2020-10-16 05:11:36,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:11:36,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:36,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:11:36,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:11:36,756 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2020-10-16 05:11:36,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 82 flow. Second operand 5 states. [2020-10-16 05:11:36,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:36,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2020-10-16 05:11:36,757 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:36,810 INFO L129 PetriNetUnfolder]: 16/50 cut-off events. [2020-10-16 05:11:36,810 INFO L130 PetriNetUnfolder]: For 69/74 co-relation queries the response was YES. [2020-10-16 05:11:36,811 INFO L80 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 50 events. 16/50 cut-off events. For 69/74 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 124 event pairs, 0 based on Foata normal form. 11/61 useless extension candidates. Maximal degree in co-relation 153. Up to 32 conditions per place. [2020-10-16 05:11:36,812 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 7 selfloop transitions, 8 changer transitions 1/27 dead transitions. [2020-10-16 05:11:36,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 143 flow [2020-10-16 05:11:36,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:11:36,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:11:36,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2020-10-16 05:11:36,814 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7596491228070176 [2020-10-16 05:11:36,815 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2020-10-16 05:11:36,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2020-10-16 05:11:36,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:36,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2020-10-16 05:11:36,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:11:36,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:11:36,818 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:11:36,819 INFO L185 Difference]: Start difference. First operand has 31 places, 20 transitions, 82 flow. Second operand 5 states and 433 transitions. [2020-10-16 05:11:36,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 143 flow [2020-10-16 05:11:36,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 27 transitions, 133 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:11:36,821 INFO L241 Difference]: Finished difference. Result has 35 places, 23 transitions, 122 flow [2020-10-16 05:11:36,821 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2020-10-16 05:11:36,822 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2020-10-16 05:11:36,822 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 122 flow [2020-10-16 05:11:36,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:11:36,822 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:36,822 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:36,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:11:36,823 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:36,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:36,823 INFO L82 PathProgramCache]: Analyzing trace with hash 147933989, now seen corresponding path program 1 times [2020-10-16 05:11:36,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:36,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450915142] [2020-10-16 05:11:36,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:36,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450915142] [2020-10-16 05:11:36,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:36,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:11:36,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118315108] [2020-10-16 05:11:36,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:11:36,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:36,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:11:36,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:11:36,866 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2020-10-16 05:11:36,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 122 flow. Second operand 4 states. [2020-10-16 05:11:36,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:36,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2020-10-16 05:11:36,867 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:36,905 INFO L129 PetriNetUnfolder]: 21/76 cut-off events. [2020-10-16 05:11:36,905 INFO L130 PetriNetUnfolder]: For 175/191 co-relation queries the response was YES. [2020-10-16 05:11:36,907 INFO L80 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 76 events. 21/76 cut-off events. For 175/191 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 259 event pairs, 3 based on Foata normal form. 11/85 useless extension candidates. Maximal degree in co-relation 247. Up to 41 conditions per place. [2020-10-16 05:11:36,907 INFO L132 encePairwiseOnDemand]: 111/114 looper letters, 6 selfloop transitions, 1 changer transitions 2/26 dead transitions. [2020-10-16 05:11:36,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 26 transitions, 147 flow [2020-10-16 05:11:36,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:11:36,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:11:36,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2020-10-16 05:11:36,910 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8026315789473685 [2020-10-16 05:11:36,910 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 366 transitions. [2020-10-16 05:11:36,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 366 transitions. [2020-10-16 05:11:36,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:36,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 366 transitions. [2020-10-16 05:11:36,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:11:36,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:11:36,913 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:11:36,913 INFO L185 Difference]: Start difference. First operand has 35 places, 23 transitions, 122 flow. Second operand 4 states and 366 transitions. [2020-10-16 05:11:36,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 26 transitions, 147 flow [2020-10-16 05:11:36,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 123 flow, removed 4 selfloop flow, removed 5 redundant places. [2020-10-16 05:11:36,917 INFO L241 Difference]: Finished difference. Result has 35 places, 23 transitions, 105 flow [2020-10-16 05:11:36,917 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2020-10-16 05:11:36,917 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2020-10-16 05:11:36,918 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 105 flow [2020-10-16 05:11:36,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:11:36,918 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:36,918 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:36,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:11:36,919 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:36,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:36,919 INFO L82 PathProgramCache]: Analyzing trace with hash -2124651943, now seen corresponding path program 2 times [2020-10-16 05:11:36,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:36,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068262777] [2020-10-16 05:11:36,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:36,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068262777] [2020-10-16 05:11:36,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:36,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:11:36,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424862135] [2020-10-16 05:11:36,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:11:36,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:36,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:11:36,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:11:36,982 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 114 [2020-10-16 05:11:36,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 105 flow. Second operand 6 states. [2020-10-16 05:11:36,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:36,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 114 [2020-10-16 05:11:36,983 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:37,046 INFO L129 PetriNetUnfolder]: 8/38 cut-off events. [2020-10-16 05:11:37,046 INFO L130 PetriNetUnfolder]: For 79/97 co-relation queries the response was YES. [2020-10-16 05:11:37,047 INFO L80 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 38 events. 8/38 cut-off events. For 79/97 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 71 event pairs, 0 based on Foata normal form. 16/53 useless extension candidates. Maximal degree in co-relation 111. Up to 16 conditions per place. [2020-10-16 05:11:37,047 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 1 selfloop transitions, 11 changer transitions 1/24 dead transitions. [2020-10-16 05:11:37,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 24 transitions, 133 flow [2020-10-16 05:11:37,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:11:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:11:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2020-10-16 05:11:37,050 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.75 [2020-10-16 05:11:37,050 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2020-10-16 05:11:37,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2020-10-16 05:11:37,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:37,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2020-10-16 05:11:37,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:11:37,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:11:37,054 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:11:37,054 INFO L185 Difference]: Start difference. First operand has 35 places, 23 transitions, 105 flow. Second operand 6 states and 513 transitions. [2020-10-16 05:11:37,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 24 transitions, 133 flow [2020-10-16 05:11:37,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 24 transitions, 130 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:11:37,057 INFO L241 Difference]: Finished difference. Result has 39 places, 23 transitions, 138 flow [2020-10-16 05:11:37,057 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=39, PETRI_TRANSITIONS=23} [2020-10-16 05:11:37,058 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2020-10-16 05:11:37,058 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 23 transitions, 138 flow [2020-10-16 05:11:37,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:11:37,058 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:37,058 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:37,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:11:37,059 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:37,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:37,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1524692014, now seen corresponding path program 1 times [2020-10-16 05:11:37,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:37,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695820529] [2020-10-16 05:11:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:37,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695820529] [2020-10-16 05:11:37,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:37,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:11:37,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012530226] [2020-10-16 05:11:37,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:11:37,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:37,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:11:37,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:11:37,116 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 114 [2020-10-16 05:11:37,116 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 23 transitions, 138 flow. Second operand 4 states. [2020-10-16 05:11:37,116 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:37,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 114 [2020-10-16 05:11:37,117 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:37,142 INFO L129 PetriNetUnfolder]: 12/53 cut-off events. [2020-10-16 05:11:37,143 INFO L130 PetriNetUnfolder]: For 104/108 co-relation queries the response was YES. [2020-10-16 05:11:37,143 INFO L80 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 53 events. 12/53 cut-off events. For 104/108 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 156 event pairs, 0 based on Foata normal form. 1/52 useless extension candidates. Maximal degree in co-relation 175. Up to 24 conditions per place. [2020-10-16 05:11:37,144 INFO L132 encePairwiseOnDemand]: 111/114 looper letters, 3 selfloop transitions, 1 changer transitions 1/24 dead transitions. [2020-10-16 05:11:37,147 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 24 transitions, 150 flow [2020-10-16 05:11:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:11:37,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:11:37,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2020-10-16 05:11:37,149 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8114035087719298 [2020-10-16 05:11:37,149 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 370 transitions. [2020-10-16 05:11:37,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 370 transitions. [2020-10-16 05:11:37,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:37,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 370 transitions. [2020-10-16 05:11:37,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:11:37,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:11:37,152 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:11:37,152 INFO L185 Difference]: Start difference. First operand has 39 places, 23 transitions, 138 flow. Second operand 4 states and 370 transitions. [2020-10-16 05:11:37,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 24 transitions, 150 flow [2020-10-16 05:11:37,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 86 flow, removed 12 selfloop flow, removed 10 redundant places. [2020-10-16 05:11:37,159 INFO L241 Difference]: Finished difference. Result has 34 places, 23 transitions, 81 flow [2020-10-16 05:11:37,159 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2020-10-16 05:11:37,160 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 05:11:37,160 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 81 flow [2020-10-16 05:11:37,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:11:37,160 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:37,160 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:37,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:11:37,161 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:37,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:37,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1274415608, now seen corresponding path program 2 times [2020-10-16 05:11:37,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:37,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018491208] [2020-10-16 05:11:37,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:37,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:37,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018491208] [2020-10-16 05:11:37,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:37,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:11:37,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504290596] [2020-10-16 05:11:37,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:11:37,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:37,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:11:37,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:11:37,234 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2020-10-16 05:11:37,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 81 flow. Second operand 4 states. [2020-10-16 05:11:37,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:37,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2020-10-16 05:11:37,235 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:37,257 INFO L129 PetriNetUnfolder]: 10/52 cut-off events. [2020-10-16 05:11:37,258 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-16 05:11:37,258 INFO L80 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 52 events. 10/52 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 164 event pairs, 2 based on Foata normal form. 1/52 useless extension candidates. Maximal degree in co-relation 111. Up to 12 conditions per place. [2020-10-16 05:11:37,258 INFO L132 encePairwiseOnDemand]: 111/114 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2020-10-16 05:11:37,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 23 transitions, 91 flow [2020-10-16 05:11:37,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:11:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:11:37,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2020-10-16 05:11:37,260 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7960526315789473 [2020-10-16 05:11:37,261 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 363 transitions. [2020-10-16 05:11:37,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 363 transitions. [2020-10-16 05:11:37,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:37,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 363 transitions. [2020-10-16 05:11:37,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:11:37,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:11:37,263 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:11:37,264 INFO L185 Difference]: Start difference. First operand has 34 places, 23 transitions, 81 flow. Second operand 4 states and 363 transitions. [2020-10-16 05:11:37,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 23 transitions, 91 flow [2020-10-16 05:11:37,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 90 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:11:37,265 INFO L241 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2020-10-16 05:11:37,265 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2020-10-16 05:11:37,265 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 05:11:37,265 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2020-10-16 05:11:37,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:11:37,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:11:37,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:11:37 BasicIcfg [2020-10-16 05:11:37,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:11:37,273 INFO L168 Benchmark]: Toolchain (without parser) took 4262.82 ms. Allocated memory was 252.7 MB in the beginning and 371.2 MB in the end (delta: 118.5 MB). Free memory was 208.7 MB in the beginning and 234.6 MB in the end (delta: -25.9 MB). Peak memory consumption was 92.6 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:37,274 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:11:37,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 800.85 ms. Allocated memory was 252.7 MB in the beginning and 318.2 MB in the end (delta: 65.5 MB). Free memory was 208.7 MB in the beginning and 268.7 MB in the end (delta: -60.0 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:37,276 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.54 ms. Allocated memory is still 318.2 MB. Free memory is still 268.7 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:11:37,276 INFO L168 Benchmark]: Boogie Preprocessor took 26.06 ms. Allocated memory is still 318.2 MB. Free memory was 268.7 MB in the beginning and 266.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:37,277 INFO L168 Benchmark]: RCFGBuilder took 443.51 ms. Allocated memory is still 318.2 MB. Free memory was 266.1 MB in the beginning and 244.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:37,278 INFO L168 Benchmark]: TraceAbstraction took 2936.78 ms. Allocated memory was 318.2 MB in the beginning and 371.2 MB in the end (delta: 53.0 MB). Free memory was 241.8 MB in the beginning and 234.6 MB in the end (delta: 7.2 MB). Peak memory consumption was 60.1 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:37,282 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 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 800.85 ms. Allocated memory was 252.7 MB in the beginning and 318.2 MB in the end (delta: 65.5 MB). Free memory was 208.7 MB in the beginning and 268.7 MB in the end (delta: -60.0 MB). Peak memory consumption was 32.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.54 ms. Allocated memory is still 318.2 MB. Free memory is still 268.7 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.06 ms. Allocated memory is still 318.2 MB. Free memory was 268.7 MB in the beginning and 266.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 443.51 ms. Allocated memory is still 318.2 MB. Free memory was 266.1 MB in the beginning and 244.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2936.78 ms. Allocated memory was 318.2 MB in the beginning and 371.2 MB in the end (delta: 53.0 MB). Free memory was 241.8 MB in the beginning and 234.6 MB in the end (delta: 7.2 MB). Peak memory consumption was 60.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 592 VarBasedMoverChecksPositive, 54 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 72 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 44 TotalNumberOfCompositions, 1608 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 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: 2.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 29 SDtfs, 14 SDslu, 19 SDs, 0 SdLazy, 81 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred 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, 0.3s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 2911 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...