/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 18:53:03,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 18:53:03,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 18:53:03,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-13 18:53:03,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-13 18:53:03,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-13 18:53:03,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-13 18:53:03,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-13 18:53:03,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-13 18:53:03,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-13 18:53:03,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-13 18:53:03,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-13 18:53:03,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-13 18:53:03,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-13 18:53:03,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-13 18:53:03,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-13 18:53:03,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-13 18:53:03,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-13 18:53:03,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-13 18:53:03,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-13 18:53:03,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-13 18:53:03,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-13 18:53:03,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-13 18:53:03,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-13 18:53:03,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-13 18:53:03,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-13 18:53:03,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-13 18:53:03,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-13 18:53:03,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-13 18:53:03,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-13 18:53:03,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-13 18:53:03,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-13 18:53:03,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-13 18:53:03,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-13 18:53:03,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-13 18:53:03,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-13 18:53:03,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-13 18:53:03,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-13 18:53:03,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 18:53:03,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 18:53:03,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 18:53:03,742 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-FA-NoLbe.epf [2021-07-13 18:53:03,779 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 18:53:03,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 18:53:03,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 18:53:03,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 18:53:03,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 18:53:03,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 18:53:03,784 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 18:53:03,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 18:53:03,784 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 18:53:03,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 18:53:03,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 18:53:03,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 18:53:03,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 18:53:03,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 18:53:03,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 18:53:03,786 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 18:53:03,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 18:53:03,786 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 18:53:03,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 18:53:03,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 18:53:03,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 18:53:03,787 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 18:53:03,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 18:53:03,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 18:53:03,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 18:53:03,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 18:53:03,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 18:53:03,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 18:53:03,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 18:53:03,788 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 18:53:03,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 18:53:03,788 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 18:53:04,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 18:53:04,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 18:53:04,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 18:53:04,136 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-13 18:53:04,137 INFO L275 PluginConnector]: CDTParser initialized [2021-07-13 18:53:04,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2021-07-13 18:53:04,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a61086fb3/b34777e9230b437fbecc09ab8c0c02d4/FLAG8f3d8c492 [2021-07-13 18:53:04,681 INFO L306 CDTParser]: Found 1 translation units. [2021-07-13 18:53:04,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i [2021-07-13 18:53:04,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a61086fb3/b34777e9230b437fbecc09ab8c0c02d4/FLAG8f3d8c492 [2021-07-13 18:53:04,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a61086fb3/b34777e9230b437fbecc09ab8c0c02d4 [2021-07-13 18:53:04,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 18:53:05,000 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-13 18:53:05,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-13 18:53:05,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-13 18:53:05,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-13 18:53:05,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:53:04" (1/1) ... [2021-07-13 18:53:05,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24fa066b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:05, skipping insertion in model container [2021-07-13 18:53:05,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:53:04" (1/1) ... [2021-07-13 18:53:05,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-13 18:53:05,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-13 18:53:05,208 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i[949,962] [2021-07-13 18:53:05,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:53:05,419 INFO L203 MainTranslator]: Completed pre-run [2021-07-13 18:53:05,434 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.opt.i[949,962] [2021-07-13 18:53:05,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:53:05,521 INFO L208 MainTranslator]: Completed translation [2021-07-13 18:53:05,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:05 WrapperNode [2021-07-13 18:53:05,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-13 18:53:05,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 18:53:05,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 18:53:05,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 18:53:05,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:05" (1/1) ... [2021-07-13 18:53:05,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:05" (1/1) ... [2021-07-13 18:53:05,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 18:53:05,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 18:53:05,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 18:53:05,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 18:53:05,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:05" (1/1) ... [2021-07-13 18:53:05,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:05" (1/1) ... [2021-07-13 18:53:05,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:05" (1/1) ... [2021-07-13 18:53:05,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:05" (1/1) ... [2021-07-13 18:53:05,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:05" (1/1) ... [2021-07-13 18:53:05,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:05" (1/1) ... [2021-07-13 18:53:05,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:05" (1/1) ... [2021-07-13 18:53:05,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 18:53:05,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 18:53:05,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 18:53:05,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 18:53:05,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:05" (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 [2021-07-13 18:53:05,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-13 18:53:05,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-13 18:53:05,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-13 18:53:05,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-13 18:53:05,710 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-13 18:53:05,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-13 18:53:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-13 18:53:05,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-13 18:53:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-13 18:53:05,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-13 18:53:05,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-13 18:53:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-13 18:53:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 18:53:05,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 18:53:05,714 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 18:53:06,192 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 18:53:06,192 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-13 18:53:06,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:53:06 BoogieIcfgContainer [2021-07-13 18:53:06,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 18:53:06,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 18:53:06,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 18:53:06,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 18:53:06,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:53:04" (1/3) ... [2021-07-13 18:53:06,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af81117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:53:06, skipping insertion in model container [2021-07-13 18:53:06,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:05" (2/3) ... [2021-07-13 18:53:06,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af81117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:53:06, skipping insertion in model container [2021-07-13 18:53:06,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:53:06" (3/3) ... [2021-07-13 18:53:06,203 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.opt.i [2021-07-13 18:53:06,211 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 18:53:06,211 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 18:53:06,211 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 18:53:06,212 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 18:53:06,252 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,253 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,253 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,253 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,253 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,253 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,253 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,253 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,254 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,254 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,254 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,254 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,255 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,255 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,255 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,255 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,257 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,258 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,258 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,258 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,259 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,261 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,261 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,261 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,262 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,262 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,262 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,263 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,267 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,267 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,267 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,267 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,269 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,270 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,270 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,270 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,275 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,275 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,275 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,275 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,278 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,278 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:53:06,281 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-13 18:53:06,302 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-13 18:53:06,332 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 18:53:06,333 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 18:53:06,333 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 18:53:06,333 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 18:53:06,333 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 18:53:06,333 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 18:53:06,333 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 18:53:06,334 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 18:53:06,349 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 82 transitions, 179 flow [2021-07-13 18:53:06,537 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4774 states, 4773 states have (on average 3.4670018856065368) internal successors, (16548), 4773 states have internal predecessors, (16548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:06,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 4774 states, 4773 states have (on average 3.4670018856065368) internal successors, (16548), 4773 states have internal predecessors, (16548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 18:53:06,594 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:53:06,595 INFO L508 BasicCegarLoop]: 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] [2021-07-13 18:53:06,595 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:53:06,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:53:06,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1333187383, now seen corresponding path program 1 times [2021-07-13 18:53:06,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:53:06,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645194450] [2021-07-13 18:53:06,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:53:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:53:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:53:06,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:53:06,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645194450] [2021-07-13 18:53:06,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645194450] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:53:06,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:53:06,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:53:06,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708281850] [2021-07-13 18:53:06,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:53:06,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:53:06,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:53:06,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:53:07,012 INFO L87 Difference]: Start difference. First operand has 4774 states, 4773 states have (on average 3.4670018856065368) internal successors, (16548), 4773 states have internal predecessors, (16548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:07,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:53:07,328 INFO L93 Difference]: Finished difference Result 5734 states and 19340 transitions. [2021-07-13 18:53:07,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:53:07,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-13 18:53:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:53:07,374 INFO L225 Difference]: With dead ends: 5734 [2021-07-13 18:53:07,375 INFO L226 Difference]: Without dead ends: 4264 [2021-07-13 18:53:07,376 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 139.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:53:07,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2021-07-13 18:53:07,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 4264. [2021-07-13 18:53:07,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4263 states have (on average 3.373915083274689) internal successors, (14383), 4263 states have internal predecessors, (14383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 14383 transitions. [2021-07-13 18:53:07,678 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 14383 transitions. Word has length 48 [2021-07-13 18:53:07,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:53:07,682 INFO L482 AbstractCegarLoop]: Abstraction has 4264 states and 14383 transitions. [2021-07-13 18:53:07,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:07,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 14383 transitions. [2021-07-13 18:53:07,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 18:53:07,700 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:53:07,701 INFO L508 BasicCegarLoop]: 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, 1, 1] [2021-07-13 18:53:07,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 18:53:07,701 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:53:07,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:53:07,704 INFO L82 PathProgramCache]: Analyzing trace with hash 622542102, now seen corresponding path program 1 times [2021-07-13 18:53:07,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:53:07,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956051071] [2021-07-13 18:53:07,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:53:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:53:07,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:53:07,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:53:07,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956051071] [2021-07-13 18:53:07,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956051071] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:53:07,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:53:07,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:53:07,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928372704] [2021-07-13 18:53:07,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:53:07,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:53:07,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:53:07,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:53:07,941 INFO L87 Difference]: Start difference. First operand 4264 states and 14383 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:53:08,092 INFO L93 Difference]: Finished difference Result 4744 states and 15857 transitions. [2021-07-13 18:53:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:53:08,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-07-13 18:53:08,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:53:08,119 INFO L225 Difference]: With dead ends: 4744 [2021-07-13 18:53:08,120 INFO L226 Difference]: Without dead ends: 3904 [2021-07-13 18:53:08,120 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 132.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:53:08,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-07-13 18:53:08,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3904. [2021-07-13 18:53:08,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3904 states, 3903 states have (on average 3.3499871893415323) internal successors, (13075), 3903 states have internal predecessors, (13075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3904 states to 3904 states and 13075 transitions. [2021-07-13 18:53:08,310 INFO L78 Accepts]: Start accepts. Automaton has 3904 states and 13075 transitions. Word has length 50 [2021-07-13 18:53:08,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:53:08,310 INFO L482 AbstractCegarLoop]: Abstraction has 3904 states and 13075 transitions. [2021-07-13 18:53:08,311 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:08,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3904 states and 13075 transitions. [2021-07-13 18:53:08,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-07-13 18:53:08,322 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:53:08,322 INFO L508 BasicCegarLoop]: 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, 1, 1, 1] [2021-07-13 18:53:08,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 18:53:08,322 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:53:08,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:53:08,330 INFO L82 PathProgramCache]: Analyzing trace with hash -242345727, now seen corresponding path program 1 times [2021-07-13 18:53:08,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:53:08,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802218357] [2021-07-13 18:53:08,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:53:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:53:08,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:53:08,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:53:08,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802218357] [2021-07-13 18:53:08,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802218357] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:53:08,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:53:08,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:53:08,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015154962] [2021-07-13 18:53:08,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:53:08,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:53:08,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:53:08,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:53:08,507 INFO L87 Difference]: Start difference. First operand 3904 states and 13075 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:08,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:53:08,714 INFO L93 Difference]: Finished difference Result 5420 states and 18059 transitions. [2021-07-13 18:53:08,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 18:53:08,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-07-13 18:53:08,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:53:08,734 INFO L225 Difference]: With dead ends: 5420 [2021-07-13 18:53:08,734 INFO L226 Difference]: Without dead ends: 2948 [2021-07-13 18:53:08,735 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 150.6ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-07-13 18:53:08,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2021-07-13 18:53:08,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2948. [2021-07-13 18:53:08,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2947 states have (on average 3.2388870037326094) internal successors, (9545), 2947 states have internal predecessors, (9545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:08,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 9545 transitions. [2021-07-13 18:53:08,869 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 9545 transitions. Word has length 51 [2021-07-13 18:53:08,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:53:08,871 INFO L482 AbstractCegarLoop]: Abstraction has 2948 states and 9545 transitions. [2021-07-13 18:53:08,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:08,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 9545 transitions. [2021-07-13 18:53:08,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-07-13 18:53:08,880 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:53:08,880 INFO L508 BasicCegarLoop]: 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, 1, 1, 1, 1, 1] [2021-07-13 18:53:08,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 18:53:08,881 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:53:08,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:53:08,882 INFO L82 PathProgramCache]: Analyzing trace with hash -790637792, now seen corresponding path program 1 times [2021-07-13 18:53:08,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:53:08,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172475996] [2021-07-13 18:53:08,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:53:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:53:08,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:53:08,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:53:08,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172475996] [2021-07-13 18:53:08,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172475996] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:53:08,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:53:08,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:53:08,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086394175] [2021-07-13 18:53:08,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:53:08,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:53:08,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:53:08,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:53:08,980 INFO L87 Difference]: Start difference. First operand 2948 states and 9545 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:09,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:53:09,124 INFO L93 Difference]: Finished difference Result 4644 states and 14889 transitions. [2021-07-13 18:53:09,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:53:09,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-07-13 18:53:09,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:53:09,162 INFO L225 Difference]: With dead ends: 4644 [2021-07-13 18:53:09,162 INFO L226 Difference]: Without dead ends: 3236 [2021-07-13 18:53:09,164 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 113.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:53:09,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2021-07-13 18:53:09,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 2756. [2021-07-13 18:53:09,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2755 states have (on average 3.162613430127042) internal successors, (8713), 2755 states have internal predecessors, (8713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:09,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 8713 transitions. [2021-07-13 18:53:09,300 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 8713 transitions. Word has length 53 [2021-07-13 18:53:09,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:53:09,300 INFO L482 AbstractCegarLoop]: Abstraction has 2756 states and 8713 transitions. [2021-07-13 18:53:09,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:09,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 8713 transitions. [2021-07-13 18:53:09,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-13 18:53:09,308 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:53:09,308 INFO L508 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1] [2021-07-13 18:53:09,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 18:53:09,308 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:53:09,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:53:09,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1374435990, now seen corresponding path program 1 times [2021-07-13 18:53:09,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:53:09,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62708528] [2021-07-13 18:53:09,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:53:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:53:09,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:53:09,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:53:09,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62708528] [2021-07-13 18:53:09,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62708528] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:53:09,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:53:09,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:53:09,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309537809] [2021-07-13 18:53:09,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:53:09,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:53:09,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:53:09,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:53:09,396 INFO L87 Difference]: Start difference. First operand 2756 states and 8713 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:09,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:53:09,525 INFO L93 Difference]: Finished difference Result 3468 states and 10847 transitions. [2021-07-13 18:53:09,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:53:09,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-07-13 18:53:09,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:53:09,537 INFO L225 Difference]: With dead ends: 3468 [2021-07-13 18:53:09,537 INFO L226 Difference]: Without dead ends: 2572 [2021-07-13 18:53:09,538 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 96.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:53:09,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2021-07-13 18:53:09,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 2572. [2021-07-13 18:53:09,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2572 states, 2571 states have (on average 3.1221314663555035) internal successors, (8027), 2571 states have internal predecessors, (8027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:09,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2572 states to 2572 states and 8027 transitions. [2021-07-13 18:53:09,621 INFO L78 Accepts]: Start accepts. Automaton has 2572 states and 8027 transitions. Word has length 54 [2021-07-13 18:53:09,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:53:09,621 INFO L482 AbstractCegarLoop]: Abstraction has 2572 states and 8027 transitions. [2021-07-13 18:53:09,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2572 states and 8027 transitions. [2021-07-13 18:53:09,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-13 18:53:09,627 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:53:09,628 INFO L508 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:53:09,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 18:53:09,628 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:53:09,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:53:09,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1728353214, now seen corresponding path program 1 times [2021-07-13 18:53:09,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:53:09,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547777877] [2021-07-13 18:53:09,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:53:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:53:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:53:09,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:53:09,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547777877] [2021-07-13 18:53:09,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547777877] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:53:09,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:53:09,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:53:09,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210170840] [2021-07-13 18:53:09,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:53:09,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:53:09,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:53:09,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:53:09,809 INFO L87 Difference]: Start difference. First operand 2572 states and 8027 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:09,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:53:09,960 INFO L93 Difference]: Finished difference Result 2776 states and 8466 transitions. [2021-07-13 18:53:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 18:53:09,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-07-13 18:53:09,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:53:09,969 INFO L225 Difference]: With dead ends: 2776 [2021-07-13 18:53:09,970 INFO L226 Difference]: Without dead ends: 2008 [2021-07-13 18:53:09,970 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 166.9ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-13 18:53:09,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2021-07-13 18:53:10,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 2008. [2021-07-13 18:53:10,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 2007 states have (on average 3.0064773293472844) internal successors, (6034), 2007 states have internal predecessors, (6034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:10,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 6034 transitions. [2021-07-13 18:53:10,041 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 6034 transitions. Word has length 55 [2021-07-13 18:53:10,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:53:10,042 INFO L482 AbstractCegarLoop]: Abstraction has 2008 states and 6034 transitions. [2021-07-13 18:53:10,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:10,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 6034 transitions. [2021-07-13 18:53:10,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-07-13 18:53:10,047 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:53:10,048 INFO L508 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:53:10,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 18:53:10,048 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:53:10,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:53:10,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1012911809, now seen corresponding path program 1 times [2021-07-13 18:53:10,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:53:10,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651665531] [2021-07-13 18:53:10,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:53:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:53:10,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:53:10,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:53:10,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651665531] [2021-07-13 18:53:10,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651665531] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:53:10,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:53:10,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 18:53:10,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704543539] [2021-07-13 18:53:10,193 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 18:53:10,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:53:10,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 18:53:10,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:53:10,194 INFO L87 Difference]: Start difference. First operand 2008 states and 6034 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:10,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:53:10,354 INFO L93 Difference]: Finished difference Result 1765 states and 5170 transitions. [2021-07-13 18:53:10,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 18:53:10,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-07-13 18:53:10,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:53:10,358 INFO L225 Difference]: With dead ends: 1765 [2021-07-13 18:53:10,359 INFO L226 Difference]: Without dead ends: 848 [2021-07-13 18:53:10,359 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 125.0ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:53:10,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2021-07-13 18:53:10,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2021-07-13 18:53:10,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 2.855962219598583) internal successors, (2419), 847 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 2419 transitions. [2021-07-13 18:53:10,380 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 2419 transitions. Word has length 57 [2021-07-13 18:53:10,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:53:10,380 INFO L482 AbstractCegarLoop]: Abstraction has 848 states and 2419 transitions. [2021-07-13 18:53:10,380 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:10,380 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 2419 transitions. [2021-07-13 18:53:10,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-07-13 18:53:10,383 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:53:10,383 INFO L508 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:53:10,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 18:53:10,383 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:53:10,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:53:10,384 INFO L82 PathProgramCache]: Analyzing trace with hash -793960868, now seen corresponding path program 1 times [2021-07-13 18:53:10,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:53:10,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039301180] [2021-07-13 18:53:10,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:53:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:53:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:53:10,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:53:10,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039301180] [2021-07-13 18:53:10,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039301180] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:53:10,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:53:10,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:53:10,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171394985] [2021-07-13 18:53:10,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:53:10,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:53:10,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:53:10,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:53:10,510 INFO L87 Difference]: Start difference. First operand 848 states and 2419 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:10,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:53:10,606 INFO L93 Difference]: Finished difference Result 794 states and 2257 transitions. [2021-07-13 18:53:10,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 18:53:10,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-07-13 18:53:10,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:53:10,606 INFO L225 Difference]: With dead ends: 794 [2021-07-13 18:53:10,606 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 18:53:10,607 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 113.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:53:10,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 18:53:10,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 18:53:10,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 18:53:10,607 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-07-13 18:53:10,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:53:10,607 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 18:53:10,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:53:10,608 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 18:53:10,608 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 18:53:10,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 18:53:10,610 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 18:53:10,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 06:53:10 BasicIcfg [2021-07-13 18:53:10,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 18:53:10,613 INFO L168 Benchmark]: Toolchain (without parser) took 5612.67 ms. Allocated memory was 202.4 MB in the beginning and 467.7 MB in the end (delta: 265.3 MB). Free memory was 164.8 MB in the beginning and 350.5 MB in the end (delta: -185.7 MB). Peak memory consumption was 81.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:53:10,613 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 202.4 MB. Free memory is still 183.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 18:53:10,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.79 ms. Allocated memory is still 202.4 MB. Free memory was 164.6 MB in the beginning and 175.9 MB in the end (delta: -11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-13 18:53:10,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.20 ms. Allocated memory is still 202.4 MB. Free memory was 175.9 MB in the beginning and 174.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 18:53:10,616 INFO L168 Benchmark]: Boogie Preprocessor took 37.94 ms. Allocated memory is still 202.4 MB. Free memory was 173.8 MB in the beginning and 172.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 18:53:10,616 INFO L168 Benchmark]: RCFGBuilder took 569.75 ms. Allocated memory is still 202.4 MB. Free memory was 172.8 MB in the beginning and 149.2 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:53:10,618 INFO L168 Benchmark]: TraceAbstraction took 4415.42 ms. Allocated memory was 202.4 MB in the beginning and 467.7 MB in the end (delta: 265.3 MB). Free memory was 148.7 MB in the beginning and 350.5 MB in the end (delta: -201.9 MB). Peak memory consumption was 64.5 MB. Max. memory is 8.0 GB. [2021-07-13 18:53:10,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 202.4 MB. Free memory is still 183.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 520.79 ms. Allocated memory is still 202.4 MB. Free memory was 164.6 MB in the beginning and 175.9 MB in the end (delta: -11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 63.20 ms. Allocated memory is still 202.4 MB. Free memory was 175.9 MB in the beginning and 174.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.94 ms. Allocated memory is still 202.4 MB. Free memory was 173.8 MB in the beginning and 172.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 569.75 ms. Allocated memory is still 202.4 MB. Free memory was 172.8 MB in the beginning and 149.2 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4415.42 ms. Allocated memory was 202.4 MB in the beginning and 467.7 MB in the end (delta: 265.3 MB). Free memory was 148.7 MB in the beginning and 350.5 MB in the end (delta: -201.9 MB). Peak memory consumption was 64.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 104 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4278.7ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 112.2ms, AutomataDifference: 1562.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 203.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 781 SDtfs, 1102 SDslu, 2483 SDs, 0 SdLazy, 301 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 291.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1037.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4774occurred in iteration=0, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 923.6ms AutomataMinimizationTime, 8 MinimizatonAttempts, 480 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 35.0ms SsaConstructionTime, 241.6ms SatisfiabilityAnalysisTime, 1000.3ms InterpolantComputationTime, 427 NumberOfCodeBlocks, 427 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 419 ConstructedInterpolants, 0 QuantifiedInterpolants, 1239 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...