/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-New_States.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 12:26:20,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 12:26:20,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 12:26:20,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 12:26:20,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 12:26:20,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 12:26:20,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 12:26:20,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 12:26:20,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 12:26:20,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 12:26:20,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 12:26:20,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 12:26:20,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 12:26:20,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 12:26:20,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 12:26:20,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 12:26:20,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 12:26:20,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 12:26:20,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 12:26:20,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 12:26:20,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 12:26:20,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 12:26:20,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 12:26:20,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 12:26:20,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 12:26:20,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 12:26:20,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 12:26:20,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 12:26:20,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 12:26:20,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 12:26:20,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 12:26:20,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 12:26:20,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 12:26:20,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 12:26:20,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 12:26:20,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 12:26:20,791 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-New_States.epf [2020-11-12 12:26:20,819 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 12:26:20,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 12:26:20,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 12:26:20,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 12:26:20,821 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 12:26:20,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 12:26:20,821 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 12:26:20,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 12:26:20,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 12:26:20,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 12:26:20,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 12:26:20,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 12:26:20,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 12:26:20,823 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 12:26:20,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 12:26:20,823 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 12:26:20,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 12:26:20,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 12:26:20,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 12:26:20,824 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 12:26:20,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 12:26:20,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:26:20,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 12:26:20,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 12:26:20,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 12:26:20,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 12:26:20,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 12:26:20,826 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 12:26:20,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 12:26:20,826 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 12:26:20,827 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=NEW_STATES 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 12:26:21,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 12:26:21,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 12:26:21,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 12:26:21,258 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 12:26:21,259 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 12:26:21,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_tso.oepc.i [2020-11-12 12:26:21,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d91c7cf6/c4a10b2804404d448c1dd8861642bd49/FLAGd659c1c7c [2020-11-12 12:26:22,126 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 12:26:22,127 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_tso.oepc.i [2020-11-12 12:26:22,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d91c7cf6/c4a10b2804404d448c1dd8861642bd49/FLAGd659c1c7c [2020-11-12 12:26:22,317 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d91c7cf6/c4a10b2804404d448c1dd8861642bd49 [2020-11-12 12:26:22,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 12:26:22,328 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 12:26:22,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 12:26:22,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 12:26:22,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 12:26:22,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:26:22" (1/1) ... [2020-11-12 12:26:22,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d526fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:26:22, skipping insertion in model container [2020-11-12 12:26:22,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:26:22" (1/1) ... [2020-11-12 12:26:22,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 12:26:22,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 12:26:22,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:26:22,921 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 12:26:23,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:26:23,150 INFO L208 MainTranslator]: Completed translation [2020-11-12 12:26:23,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:26:23 WrapperNode [2020-11-12 12:26:23,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 12:26:23,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 12:26:23,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 12:26:23,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 12:26:23,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:26:23" (1/1) ... [2020-11-12 12:26:23,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:26:23" (1/1) ... [2020-11-12 12:26:23,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 12:26:23,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 12:26:23,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 12:26:23,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 12:26:23,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:26:23" (1/1) ... [2020-11-12 12:26:23,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:26:23" (1/1) ... [2020-11-12 12:26:23,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:26:23" (1/1) ... [2020-11-12 12:26:23,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:26:23" (1/1) ... [2020-11-12 12:26:23,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:26:23" (1/1) ... [2020-11-12 12:26:23,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:26:23" (1/1) ... [2020-11-12 12:26:23,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:26:23" (1/1) ... [2020-11-12 12:26:23,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 12:26:23,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 12:26:23,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 12:26:23,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 12:26:23,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:26:23" (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 [2020-11-12 12:26:23,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 12:26:23,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 12:26:23,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 12:26:23,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 12:26:23,414 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 12:26:23,414 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 12:26:23,414 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 12:26:23,414 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 12:26:23,414 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 12:26:23,415 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 12:26:23,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 12:26:23,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 12:26:23,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 12:26:23,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 12:26:23,417 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 12:26:23,868 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 12:26:23,868 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 12:26:23,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:26:23 BoogieIcfgContainer [2020-11-12 12:26:23,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 12:26:23,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 12:26:23,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 12:26:23,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 12:26:23,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:26:22" (1/3) ... [2020-11-12 12:26:23,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef79960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:26:23, skipping insertion in model container [2020-11-12 12:26:23,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:26:23" (2/3) ... [2020-11-12 12:26:23,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef79960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:26:23, skipping insertion in model container [2020-11-12 12:26:23,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:26:23" (3/3) ... [2020-11-12 12:26:23,881 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_tso.oepc.i [2020-11-12 12:26:23,899 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 12:26:23,900 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 12:26:23,904 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 12:26:23,905 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 12:26:23,946 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,947 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,947 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,947 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,947 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,948 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,948 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,948 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,949 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,949 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,949 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,949 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,950 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,950 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,950 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,950 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,951 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,951 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,951 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,951 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,952 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,952 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,952 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,953 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,953 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,953 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,954 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,954 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,954 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,954 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,954 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,955 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,955 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,955 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,956 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,956 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,962 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,963 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,963 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,963 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,970 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,970 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,971 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,971 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,974 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,975 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,975 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,975 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:26:23,978 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 12:26:23,992 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 12:26:24,017 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 12:26:24,017 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 12:26:24,017 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 12:26:24,018 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 12:26:24,018 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 12:26:24,018 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 12:26:24,018 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 12:26:24,018 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 12:26:24,032 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-11-12 12:26:24,738 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8448 states, 8446 states have (on average 3.5893914278948613) internal successors, (30316), 8447 states have internal predecessors, (30316), 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) [2020-11-12 12:26:25,683 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 941ms [2020-11-12 12:26:25,739 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 8448 states, 8446 states have (on average 3.5893914278948613) internal successors, (30316), 8447 states have internal predecessors, (30316), 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) [2020-11-12 12:26:25,796 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 28526 states, 26055 states have (on average 1.1730186144693917) internal successors, (30563), 28525 states have internal predecessors, (30563), 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) [2020-11-12 12:26:25,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 28526 states, 26055 states have (on average 1.1730186144693917) internal successors, (30563), 28525 states have internal predecessors, (30563), 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) [2020-11-12 12:26:25,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-12 12:26:25,852 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:26:25,853 INFO L494 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] [2020-11-12 12:26:25,854 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:26:25,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:26:25,861 INFO L82 PathProgramCache]: Analyzing trace with hash 122866376, now seen corresponding path program 1 times [2020-11-12 12:26:25,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:26:25,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732170343] [2020-11-12 12:26:25,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:26:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:26:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:26:26,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732170343] [2020-11-12 12:26:26,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:26:26,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:26:26,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981022352] [2020-11-12 12:26:26,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:26:26,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:26:26,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:26:26,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:26:26,458 INFO L87 Difference]: Start difference. First operand has 28526 states, 26055 states have (on average 1.1730186144693917) internal successors, (30563), 28525 states have internal predecessors, (30563), 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 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2020-11-12 12:26:26,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:26:26,853 INFO L93 Difference]: Finished difference Result 11649 states and 13061 transitions. [2020-11-12 12:26:26,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:26:26,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 42 [2020-11-12 12:26:26,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:26:26,896 INFO L225 Difference]: With dead ends: 11649 [2020-11-12 12:26:26,896 INFO L226 Difference]: Without dead ends: 3957 [2020-11-12 12:26:26,898 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:26:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2020-11-12 12:26:27,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3957. [2020-11-12 12:26:27,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3957 states, 3747 states have (on average 1.3197224446223645) internal successors, (4945), 3956 states have internal predecessors, (4945), 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) [2020-11-12 12:26:27,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3957 states to 3957 states and 4945 transitions. [2020-11-12 12:26:27,218 INFO L78 Accepts]: Start accepts. Automaton has 3957 states and 4945 transitions. Word has length 42 [2020-11-12 12:26:27,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:26:27,220 INFO L481 AbstractCegarLoop]: Abstraction has 3957 states and 4945 transitions. [2020-11-12 12:26:27,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2020-11-12 12:26:27,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3957 states and 4945 transitions. [2020-11-12 12:26:27,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-12 12:26:27,234 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:26:27,235 INFO L494 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] [2020-11-12 12:26:27,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 12:26:27,240 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:26:27,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:26:27,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1872350423, now seen corresponding path program 1 times [2020-11-12 12:26:27,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:26:27,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444382050] [2020-11-12 12:26:27,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:26:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:26:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:26:27,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444382050] [2020-11-12 12:26:27,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:26:27,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:26:27,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077986116] [2020-11-12 12:26:27,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:26:27,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:26:27,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:26:27,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:26:27,484 INFO L87 Difference]: Start difference. First operand 3957 states and 4945 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2020-11-12 12:26:27,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:26:27,808 INFO L93 Difference]: Finished difference Result 5556 states and 7053 transitions. [2020-11-12 12:26:27,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:26:27,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 44 [2020-11-12 12:26:27,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:26:27,823 INFO L225 Difference]: With dead ends: 5556 [2020-11-12 12:26:27,823 INFO L226 Difference]: Without dead ends: 2624 [2020-11-12 12:26:27,824 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:26:27,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2020-11-12 12:26:27,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2624. [2020-11-12 12:26:27,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2624 states, 2484 states have (on average 1.2834138486312399) internal successors, (3188), 2623 states have internal predecessors, (3188), 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) [2020-11-12 12:26:27,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 3188 transitions. [2020-11-12 12:26:27,932 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 3188 transitions. Word has length 44 [2020-11-12 12:26:27,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:26:27,933 INFO L481 AbstractCegarLoop]: Abstraction has 2624 states and 3188 transitions. [2020-11-12 12:26:27,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2020-11-12 12:26:27,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 3188 transitions. [2020-11-12 12:26:27,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 12:26:27,938 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:26:27,938 INFO L494 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] [2020-11-12 12:26:27,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 12:26:27,938 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:26:27,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:26:27,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1542852296, now seen corresponding path program 1 times [2020-11-12 12:26:27,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:26:27,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026010596] [2020-11-12 12:26:27,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:26:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:26:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:26:28,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026010596] [2020-11-12 12:26:28,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:26:28,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:26:28,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022617500] [2020-11-12 12:26:28,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:26:28,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:26:28,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:26:28,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:26:28,134 INFO L87 Difference]: Start difference. First operand 2624 states and 3188 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2020-11-12 12:26:28,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:26:28,355 INFO L93 Difference]: Finished difference Result 2891 states and 3362 transitions. [2020-11-12 12:26:28,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:26:28,356 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2020-11-12 12:26:28,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:26:28,367 INFO L225 Difference]: With dead ends: 2891 [2020-11-12 12:26:28,367 INFO L226 Difference]: Without dead ends: 2455 [2020-11-12 12:26:28,368 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:26:28,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2020-11-12 12:26:28,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2455. [2020-11-12 12:26:28,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2323 states have (on average 1.2587171760654325) internal successors, (2924), 2454 states have internal predecessors, (2924), 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) [2020-11-12 12:26:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 2924 transitions. [2020-11-12 12:26:28,435 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 2924 transitions. Word has length 46 [2020-11-12 12:26:28,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:26:28,436 INFO L481 AbstractCegarLoop]: Abstraction has 2455 states and 2924 transitions. [2020-11-12 12:26:28,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2020-11-12 12:26:28,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 2924 transitions. [2020-11-12 12:26:28,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 12:26:28,441 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:26:28,441 INFO L494 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] [2020-11-12 12:26:28,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 12:26:28,441 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:26:28,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:26:28,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1741848716, now seen corresponding path program 1 times [2020-11-12 12:26:28,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:26:28,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239861043] [2020-11-12 12:26:28,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:26:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:26:28,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:26:28,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239861043] [2020-11-12 12:26:28,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:26:28,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:26:28,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865381766] [2020-11-12 12:26:28,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:26:28,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:26:28,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:26:28,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:26:28,682 INFO L87 Difference]: Start difference. First operand 2455 states and 2924 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2020-11-12 12:26:28,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:26:28,943 INFO L93 Difference]: Finished difference Result 2249 states and 2540 transitions. [2020-11-12 12:26:28,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:26:28,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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 47 [2020-11-12 12:26:28,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:26:28,952 INFO L225 Difference]: With dead ends: 2249 [2020-11-12 12:26:28,952 INFO L226 Difference]: Without dead ends: 1664 [2020-11-12 12:26:28,953 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-12 12:26:28,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-11-12 12:26:28,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1664. [2020-11-12 12:26:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1574 states have (on average 1.172808132147395) internal successors, (1846), 1663 states have internal predecessors, (1846), 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) [2020-11-12 12:26:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 1846 transitions. [2020-11-12 12:26:28,995 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 1846 transitions. Word has length 47 [2020-11-12 12:26:28,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:26:28,996 INFO L481 AbstractCegarLoop]: Abstraction has 1664 states and 1846 transitions. [2020-11-12 12:26:28,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2020-11-12 12:26:28,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 1846 transitions. [2020-11-12 12:26:28,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-12 12:26:29,000 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:26:29,000 INFO L494 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] [2020-11-12 12:26:29,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 12:26:29,000 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:26:29,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:26:29,001 INFO L82 PathProgramCache]: Analyzing trace with hash -868156139, now seen corresponding path program 1 times [2020-11-12 12:26:29,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:26:29,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111069994] [2020-11-12 12:26:29,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:26:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:26:29,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:26:29,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111069994] [2020-11-12 12:26:29,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:26:29,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 12:26:29,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699114802] [2020-11-12 12:26:29,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 12:26:29,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:26:29,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 12:26:29,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 12:26:29,183 INFO L87 Difference]: Start difference. First operand 1664 states and 1846 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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) [2020-11-12 12:26:29,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:26:29,474 INFO L93 Difference]: Finished difference Result 1116 states and 1199 transitions. [2020-11-12 12:26:29,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 12:26:29,475 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 49 [2020-11-12 12:26:29,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:26:29,478 INFO L225 Difference]: With dead ends: 1116 [2020-11-12 12:26:29,479 INFO L226 Difference]: Without dead ends: 548 [2020-11-12 12:26:29,479 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-12 12:26:29,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-11-12 12:26:29,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2020-11-12 12:26:29,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 521 states have (on average 1.072936660268714) internal successors, (559), 547 states have internal predecessors, (559), 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) [2020-11-12 12:26:29,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 559 transitions. [2020-11-12 12:26:29,511 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 559 transitions. Word has length 49 [2020-11-12 12:26:29,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:26:29,511 INFO L481 AbstractCegarLoop]: Abstraction has 548 states and 559 transitions. [2020-11-12 12:26:29,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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) [2020-11-12 12:26:29,511 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 559 transitions. [2020-11-12 12:26:29,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-12 12:26:29,513 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:26:29,514 INFO L494 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] [2020-11-12 12:26:29,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 12:26:29,514 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:26:29,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:26:29,515 INFO L82 PathProgramCache]: Analyzing trace with hash -321537289, now seen corresponding path program 1 times [2020-11-12 12:26:29,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:26:29,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271857588] [2020-11-12 12:26:29,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:26:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:26:29,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:26:29,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271857588] [2020-11-12 12:26:29,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:26:29,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:26:29,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746339478] [2020-11-12 12:26:29,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:26:29,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:26:29,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:26:29,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:26:29,677 INFO L87 Difference]: Start difference. First operand 548 states and 559 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2020-11-12 12:26:29,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:26:29,795 INFO L93 Difference]: Finished difference Result 891 states and 899 transitions. [2020-11-12 12:26:29,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:26:29,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 [2020-11-12 12:26:29,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:26:29,798 INFO L225 Difference]: With dead ends: 891 [2020-11-12 12:26:29,799 INFO L226 Difference]: Without dead ends: 502 [2020-11-12 12:26:29,799 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:26:29,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-11-12 12:26:29,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2020-11-12 12:26:29,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 475 states have (on average 1.0547368421052632) internal successors, (501), 501 states have internal predecessors, (501), 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) [2020-11-12 12:26:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 501 transitions. [2020-11-12 12:26:29,813 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 501 transitions. Word has length 53 [2020-11-12 12:26:29,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:26:29,814 INFO L481 AbstractCegarLoop]: Abstraction has 502 states and 501 transitions. [2020-11-12 12:26:29,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2020-11-12 12:26:29,815 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 501 transitions. [2020-11-12 12:26:29,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-12 12:26:29,816 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:26:29,816 INFO L494 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] [2020-11-12 12:26:29,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 12:26:29,817 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:26:29,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:26:29,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1044488983, now seen corresponding path program 2 times [2020-11-12 12:26:29,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:26:29,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608157243] [2020-11-12 12:26:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:26:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:26:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:26:29,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608157243] [2020-11-12 12:26:29,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:26:29,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:26:29,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251836827] [2020-11-12 12:26:29,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:26:29,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:26:29,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:26:29,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:26:29,977 INFO L87 Difference]: Start difference. First operand 502 states and 501 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2020-11-12 12:26:30,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:26:30,092 INFO L93 Difference]: Finished difference Result 394 states and 393 transitions. [2020-11-12 12:26:30,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:26:30,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 [2020-11-12 12:26:30,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:26:30,093 INFO L225 Difference]: With dead ends: 394 [2020-11-12 12:26:30,093 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 12:26:30,093 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:26:30,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 12:26:30,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 12:26:30,094 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) [2020-11-12 12:26:30,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 12:26:30,094 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-11-12 12:26:30,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:26:30,095 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 12:26:30,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2020-11-12 12:26:30,096 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 12:26:30,097 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 12:26:30,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 12:26:30,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:26:30 BasicIcfg [2020-11-12 12:26:30,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 12:26:30,107 INFO L168 Benchmark]: Toolchain (without parser) took 7781.58 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 817.9 MB). Free memory was 277.2 MB in the beginning and 950.0 MB in the end (delta: -672.8 MB). Peak memory consumption was 146.7 MB. Max. memory is 16.0 GB. [2020-11-12 12:26:30,108 INFO L168 Benchmark]: CDTParser took 0.84 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:26:30,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 822.11 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 245.0 MB in the end (delta: 31.7 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. [2020-11-12 12:26:30,116 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.69 ms. Allocated memory is still 302.0 MB. Free memory was 245.0 MB in the beginning and 242.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:26:30,117 INFO L168 Benchmark]: Boogie Preprocessor took 63.15 ms. Allocated memory is still 302.0 MB. Free memory was 242.9 MB in the beginning and 241.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:26:30,118 INFO L168 Benchmark]: RCFGBuilder took 565.73 ms. Allocated memory is still 302.0 MB. Free memory was 241.6 MB in the beginning and 262.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2020-11-12 12:26:30,119 INFO L168 Benchmark]: TraceAbstraction took 6230.24 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 817.9 MB). Free memory was 262.7 MB in the beginning and 950.0 MB in the end (delta: -687.3 MB). Peak memory consumption was 129.5 MB. Max. memory is 16.0 GB. [2020-11-12 12:26:30,132 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 822.11 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 245.0 MB in the end (delta: 31.7 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 85.69 ms. Allocated memory is still 302.0 MB. Free memory was 245.0 MB in the beginning and 242.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 63.15 ms. Allocated memory is still 302.0 MB. Free memory was 242.9 MB in the beginning and 241.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 565.73 ms. Allocated memory is still 302.0 MB. Free memory was 241.6 MB in the beginning and 262.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6230.24 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 817.9 MB). Free memory was 262.7 MB in the beginning and 950.0 MB in the end (delta: -687.3 MB). Peak memory consumption was 129.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 447 SDtfs, 627 SDslu, 1669 SDs, 0 SdLazy, 226 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28526occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 334 NumberOfCodeBlocks, 334 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 40983 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...