/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.epf -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-344d29da17dfcedfb91d6006a5dbd12b556a868d-344d29d [2021-02-16 14:36:16,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-16 14:36:16,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-16 14:36:16,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-16 14:36:16,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-16 14:36:16,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-16 14:36:16,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-16 14:36:16,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-16 14:36:16,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-16 14:36:16,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-16 14:36:16,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-16 14:36:16,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-16 14:36:16,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-16 14:36:16,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-16 14:36:16,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-16 14:36:16,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-16 14:36:16,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-16 14:36:16,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-16 14:36:16,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-16 14:36:16,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-16 14:36:16,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-16 14:36:16,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-16 14:36:16,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-16 14:36:16,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-16 14:36:16,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-16 14:36:16,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-16 14:36:16,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-16 14:36:16,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-16 14:36:16,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-16 14:36:16,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-16 14:36:16,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-16 14:36:16,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-16 14:36:16,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-16 14:36:16,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-16 14:36:16,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-16 14:36:16,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-16 14:36:16,795 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 [2021-02-16 14:36:16,853 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-16 14:36:16,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-16 14:36:16,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-16 14:36:16,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-16 14:36:16,856 INFO L138 SettingsManager]: * Use SBE=true [2021-02-16 14:36:16,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-16 14:36:16,856 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-16 14:36:16,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-16 14:36:16,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-16 14:36:16,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-16 14:36:16,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-16 14:36:16,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-16 14:36:16,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-16 14:36:16,861 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-16 14:36:16,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-16 14:36:16,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-16 14:36:16,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-16 14:36:16,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-16 14:36:16,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-16 14:36:16,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-16 14:36:16,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-16 14:36:16,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-16 14:36:16,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-16 14:36:16,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-16 14:36:16,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-16 14:36:16,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-16 14:36:16,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-16 14:36:16,864 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-02-16 14:36:16,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-16 14:36:16,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-16 14:36:17,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-16 14:36:17,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-16 14:36:17,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-16 14:36:17,314 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-16 14:36:17,314 INFO L275 PluginConnector]: CDTParser initialized [2021-02-16 14:36:17,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2021-02-16 14:36:17,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6493232ab/2d9d2f0f7bf34cd5a1d50472aa163487/FLAGbbb1de9cc [2021-02-16 14:36:18,067 INFO L306 CDTParser]: Found 1 translation units. [2021-02-16 14:36:18,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2021-02-16 14:36:18,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6493232ab/2d9d2f0f7bf34cd5a1d50472aa163487/FLAGbbb1de9cc [2021-02-16 14:36:18,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6493232ab/2d9d2f0f7bf34cd5a1d50472aa163487 [2021-02-16 14:36:18,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-16 14:36:18,386 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-02-16 14:36:18,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-16 14:36:18,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-16 14:36:18,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-16 14:36:18,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:36:18" (1/1) ... [2021-02-16 14:36:18,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab64a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:36:18, skipping insertion in model container [2021-02-16 14:36:18,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:36:18" (1/1) ... [2021-02-16 14:36:18,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-16 14:36:18,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-16 14:36:18,641 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-02-16 14:36:18,821 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-02-16 14:36:18,838 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-02-16 14:36:18,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-16 14:36:18,863 INFO L203 MainTranslator]: Completed pre-run [2021-02-16 14:36:18,897 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-02-16 14:36:18,954 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-02-16 14:36:18,961 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-02-16 14:36:18,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-16 14:36:19,056 INFO L208 MainTranslator]: Completed translation [2021-02-16 14:36:19,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:36:19 WrapperNode [2021-02-16 14:36:19,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-16 14:36:19,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-02-16 14:36:19,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-02-16 14:36:19,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-02-16 14:36:19,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:36:19" (1/1) ... [2021-02-16 14:36:19,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:36:19" (1/1) ... [2021-02-16 14:36:19,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-02-16 14:36:19,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-16 14:36:19,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-16 14:36:19,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-16 14:36:19,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:36:19" (1/1) ... [2021-02-16 14:36:19,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:36:19" (1/1) ... [2021-02-16 14:36:19,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:36:19" (1/1) ... [2021-02-16 14:36:19,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:36:19" (1/1) ... [2021-02-16 14:36:19,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:36:19" (1/1) ... [2021-02-16 14:36:19,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:36:19" (1/1) ... [2021-02-16 14:36:19,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:36:19" (1/1) ... [2021-02-16 14:36:19,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-16 14:36:19,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-16 14:36:19,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-16 14:36:19,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-16 14:36:19,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:36:19" (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 [2021-02-16 14:36:19,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-16 14:36:19,305 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-02-16 14:36:19,306 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-02-16 14:36:19,309 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-02-16 14:36:19,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-02-16 14:36:19,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-16 14:36:19,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-02-16 14:36:19,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-16 14:36:19,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-16 14:36:19,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-16 14:36:19,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-02-16 14:36:19,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-16 14:36:19,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-16 14:36:19,313 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-02-16 14:36:19,881 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-16 14:36:19,882 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-02-16 14:36:19,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:36:19 BoogieIcfgContainer [2021-02-16 14:36:19,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-16 14:36:19,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-16 14:36:19,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-16 14:36:19,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-16 14:36:19,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 02:36:18" (1/3) ... [2021-02-16 14:36:19,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2620b78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:36:19, skipping insertion in model container [2021-02-16 14:36:19,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:36:19" (2/3) ... [2021-02-16 14:36:19,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2620b78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:36:19, skipping insertion in model container [2021-02-16 14:36:19,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:36:19" (3/3) ... [2021-02-16 14:36:19,895 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2021-02-16 14:36:19,903 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-02-16 14:36:19,903 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-16 14:36:19,908 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-02-16 14:36:19,910 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-02-16 14:36:19,946 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,946 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,947 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,947 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,947 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,947 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,948 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,948 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,948 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,948 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,949 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,949 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,949 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,950 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,950 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,950 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,950 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,951 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,951 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,951 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,952 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,952 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,952 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,952 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,953 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,953 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,953 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,953 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,953 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,954 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,954 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,954 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,954 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,955 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,957 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,957 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,957 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,957 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,957 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,958 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,958 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,958 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,958 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,959 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,959 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,959 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,959 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,960 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,960 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,960 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,961 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,961 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,961 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,961 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,961 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,962 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,962 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,962 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,962 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,963 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,963 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,963 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,963 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,966 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,966 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,966 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,966 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,967 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,967 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,972 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,972 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,972 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,973 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,973 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,973 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 14:36:19,982 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-02-16 14:36:20,005 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-02-16 14:36:20,031 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-16 14:36:20,031 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-16 14:36:20,031 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-16 14:36:20,031 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-16 14:36:20,031 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-16 14:36:20,032 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-16 14:36:20,032 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-16 14:36:20,032 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-16 14:36:20,046 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 96 transitions, 214 flow [2021-02-16 14:36:20,135 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1543 states, 1539 states have (on average 2.9980506822612085) internal successors, (4614), 1542 states have internal predecessors, (4614), 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) [2021-02-16 14:36:20,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 1543 states, 1539 states have (on average 2.9980506822612085) internal successors, (4614), 1542 states have internal predecessors, (4614), 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) [2021-02-16 14:36:20,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-16 14:36:20,153 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 14:36:20,154 INFO L505 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] [2021-02-16 14:36:20,154 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 14:36:20,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 14:36:20,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1649314809, now seen corresponding path program 1 times [2021-02-16 14:36:20,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 14:36:20,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694421707] [2021-02-16 14:36:20,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 14:36:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 14:36:20,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 14:36:20,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 14:36:20,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 14:36:20,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 14:36:20,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 14:36:20,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694421707] [2021-02-16 14:36:20,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 14:36:20,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-02-16 14:36:20,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797501758] [2021-02-16 14:36:20,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-02-16 14:36:20,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 14:36:20,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-02-16 14:36:20,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-02-16 14:36:20,435 INFO L87 Difference]: Start difference. First operand has 1543 states, 1539 states have (on average 2.9980506822612085) internal successors, (4614), 1542 states have internal predecessors, (4614), 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 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-02-16 14:36:20,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 14:36:20,510 INFO L93 Difference]: Finished difference Result 1543 states and 4208 transitions. [2021-02-16 14:36:20,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-16 14:36:20,512 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2021-02-16 14:36:20,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 14:36:20,549 INFO L225 Difference]: With dead ends: 1543 [2021-02-16 14:36:20,549 INFO L226 Difference]: Without dead ends: 1428 [2021-02-16 14:36:20,551 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-02-16 14:36:20,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-02-16 14:36:20,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1428. [2021-02-16 14:36:20,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1425 states have (on average 2.7628070175438597) internal successors, (3937), 1427 states have internal predecessors, (3937), 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) [2021-02-16 14:36:20,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 3937 transitions. [2021-02-16 14:36:20,751 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 3937 transitions. Word has length 28 [2021-02-16 14:36:20,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 14:36:20,751 INFO L480 AbstractCegarLoop]: Abstraction has 1428 states and 3937 transitions. [2021-02-16 14:36:20,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-02-16 14:36:20,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 3937 transitions. [2021-02-16 14:36:20,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-16 14:36:20,755 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 14:36:20,755 INFO L505 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] [2021-02-16 14:36:20,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-16 14:36:20,756 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 14:36:20,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 14:36:20,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1649344600, now seen corresponding path program 1 times [2021-02-16 14:36:20,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 14:36:20,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436048518] [2021-02-16 14:36:20,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 14:36:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 14:36:20,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 14:36:20,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 14:36:20,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 14:36:20,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 14:36:20,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 14:36:20,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 14:36:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 14:36:20,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436048518] [2021-02-16 14:36:20,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 14:36:20,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-16 14:36:20,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628217264] [2021-02-16 14:36:20,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-16 14:36:20,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 14:36:20,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-16 14:36:20,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-16 14:36:20,967 INFO L87 Difference]: Start difference. First operand 1428 states and 3937 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-02-16 14:36:21,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 14:36:21,019 INFO L93 Difference]: Finished difference Result 1425 states and 3856 transitions. [2021-02-16 14:36:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-16 14:36:21,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-02-16 14:36:21,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 14:36:21,030 INFO L225 Difference]: With dead ends: 1425 [2021-02-16 14:36:21,030 INFO L226 Difference]: Without dead ends: 1173 [2021-02-16 14:36:21,031 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-16 14:36:21,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-02-16 14:36:21,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1119. [2021-02-16 14:36:21,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1116 states have (on average 2.74910394265233) internal successors, (3068), 1118 states have internal predecessors, (3068), 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) [2021-02-16 14:36:21,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3068 transitions. [2021-02-16 14:36:21,091 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3068 transitions. Word has length 28 [2021-02-16 14:36:21,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 14:36:21,092 INFO L480 AbstractCegarLoop]: Abstraction has 1119 states and 3068 transitions. [2021-02-16 14:36:21,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-02-16 14:36:21,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3068 transitions. [2021-02-16 14:36:21,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-16 14:36:21,095 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 14:36:21,095 INFO L505 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] [2021-02-16 14:36:21,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-16 14:36:21,096 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 14:36:21,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 14:36:21,097 INFO L82 PathProgramCache]: Analyzing trace with hash -641579850, now seen corresponding path program 1 times [2021-02-16 14:36:21,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 14:36:21,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871444695] [2021-02-16 14:36:21,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 14:36:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 14:36:21,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 14:36:21,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 14:36:21,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 14:36:21,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-16 14:36:21,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 14:36:21,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 14:36:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 14:36:21,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871444695] [2021-02-16 14:36:21,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 14:36:21,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-16 14:36:21,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870950112] [2021-02-16 14:36:21,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-16 14:36:21,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 14:36:21,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-16 14:36:21,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-16 14:36:21,157 INFO L87 Difference]: Start difference. First operand 1119 states and 3068 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-02-16 14:36:21,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 14:36:21,187 INFO L93 Difference]: Finished difference Result 1041 states and 2816 transitions. [2021-02-16 14:36:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-16 14:36:21,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-02-16 14:36:21,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 14:36:21,197 INFO L225 Difference]: With dead ends: 1041 [2021-02-16 14:36:21,198 INFO L226 Difference]: Without dead ends: 774 [2021-02-16 14:36:21,198 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-16 14:36:21,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-02-16 14:36:21,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2021-02-16 14:36:21,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 772 states have (on average 2.731865284974093) internal successors, (2109), 773 states have internal predecessors, (2109), 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) [2021-02-16 14:36:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 2109 transitions. [2021-02-16 14:36:21,235 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 2109 transitions. Word has length 31 [2021-02-16 14:36:21,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 14:36:21,237 INFO L480 AbstractCegarLoop]: Abstraction has 774 states and 2109 transitions. [2021-02-16 14:36:21,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-02-16 14:36:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 2109 transitions. [2021-02-16 14:36:21,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-16 14:36:21,241 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 14:36:21,241 INFO L505 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] [2021-02-16 14:36:21,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-16 14:36:21,241 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 14:36:21,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 14:36:21,242 INFO L82 PathProgramCache]: Analyzing trace with hash 282905411, now seen corresponding path program 1 times [2021-02-16 14:36:21,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 14:36:21,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834787087] [2021-02-16 14:36:21,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 14:36:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 14:36:21,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 14:36:21,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 14:36:21,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 14:36:21,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 14:36:21,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 14:36:21,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-16 14:36:21,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 14:36:21,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 14:36:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 14:36:21,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834787087] [2021-02-16 14:36:21,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 14:36:21,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-16 14:36:21,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432372017] [2021-02-16 14:36:21,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-16 14:36:21,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 14:36:21,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-16 14:36:21,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-16 14:36:21,324 INFO L87 Difference]: Start difference. First operand 774 states and 2109 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-02-16 14:36:21,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 14:36:21,378 INFO L93 Difference]: Finished difference Result 1098 states and 3099 transitions. [2021-02-16 14:36:21,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-16 14:36:21,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2021-02-16 14:36:21,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 14:36:21,387 INFO L225 Difference]: With dead ends: 1098 [2021-02-16 14:36:21,388 INFO L226 Difference]: Without dead ends: 978 [2021-02-16 14:36:21,388 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-16 14:36:21,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-02-16 14:36:21,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 738. [2021-02-16 14:36:21,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 736 states have (on average 2.71875) internal successors, (2001), 737 states have internal predecessors, (2001), 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) [2021-02-16 14:36:21,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 2001 transitions. [2021-02-16 14:36:21,428 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 2001 transitions. Word has length 36 [2021-02-16 14:36:21,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 14:36:21,429 INFO L480 AbstractCegarLoop]: Abstraction has 738 states and 2001 transitions. [2021-02-16 14:36:21,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-02-16 14:36:21,429 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 2001 transitions. [2021-02-16 14:36:21,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-16 14:36:21,432 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 14:36:21,432 INFO L505 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] [2021-02-16 14:36:21,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-16 14:36:21,432 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 14:36:21,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 14:36:21,433 INFO L82 PathProgramCache]: Analyzing trace with hash 695318889, now seen corresponding path program 1 times [2021-02-16 14:36:21,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 14:36:21,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483882041] [2021-02-16 14:36:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 14:36:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 14:36:21,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 14:36:21,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 14:36:21,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 14:36:21,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 14:36:21,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 14:36:21,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-16 14:36:21,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 14:36:21,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 14:36:21,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 14:36:21,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483882041] [2021-02-16 14:36:21,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 14:36:21,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-16 14:36:21,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567906105] [2021-02-16 14:36:21,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-16 14:36:21,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 14:36:21,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-16 14:36:21,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-16 14:36:21,493 INFO L87 Difference]: Start difference. First operand 738 states and 2001 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-02-16 14:36:21,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 14:36:21,538 INFO L93 Difference]: Finished difference Result 912 states and 2660 transitions. [2021-02-16 14:36:21,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-16 14:36:21,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2021-02-16 14:36:21,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 14:36:21,540 INFO L225 Difference]: With dead ends: 912 [2021-02-16 14:36:21,540 INFO L226 Difference]: Without dead ends: 0 [2021-02-16 14:36:21,541 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-16 14:36:21,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-16 14:36:21,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-16 14:36:21,541 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) [2021-02-16 14:36:21,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-16 14:36:21,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-02-16 14:36:21,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 14:36:21,542 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-16 14:36:21,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-02-16 14:36:21,543 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-16 14:36:21,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-16 14:36:21,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-16 14:36:21,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 02:36:21 BasicIcfg [2021-02-16 14:36:21,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-16 14:36:21,551 INFO L168 Benchmark]: Toolchain (without parser) took 3174.51 ms. Allocated memory is still 302.0 MB. Free memory was 277.3 MB in the beginning and 112.8 MB in the end (delta: 164.5 MB). Peak memory consumption was 163.9 MB. Max. memory is 16.0 GB. [2021-02-16 14:36:21,551 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-02-16 14:36:21,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.05 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 246.0 MB in the end (delta: 30.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2021-02-16 14:36:21,553 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.85 ms. Allocated memory is still 302.0 MB. Free memory was 245.8 MB in the beginning and 244.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-02-16 14:36:21,554 INFO L168 Benchmark]: Boogie Preprocessor took 82.50 ms. Allocated memory is still 302.0 MB. Free memory was 244.0 MB in the beginning and 284.8 MB in the end (delta: -40.8 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. [2021-02-16 14:36:21,555 INFO L168 Benchmark]: RCFGBuilder took 691.61 ms. Allocated memory is still 302.0 MB. Free memory was 284.8 MB in the beginning and 259.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-02-16 14:36:21,555 INFO L168 Benchmark]: TraceAbstraction took 1662.40 ms. Allocated memory is still 302.0 MB. Free memory was 258.6 MB in the beginning and 112.8 MB in the end (delta: 145.8 MB). Peak memory consumption was 144.7 MB. Max. memory is 16.0 GB. [2021-02-16 14:36:21,559 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 668.05 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 246.0 MB in the end (delta: 30.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.85 ms. Allocated memory is still 302.0 MB. Free memory was 245.8 MB in the beginning and 244.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 82.50 ms. Allocated memory is still 302.0 MB. Free memory was 244.0 MB in the beginning and 284.8 MB in the end (delta: -40.8 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.0 GB. * RCFGBuilder took 691.61 ms. Allocated memory is still 302.0 MB. Free memory was 284.8 MB in the beginning and 259.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1662.40 ms. Allocated memory is still 302.0 MB. Free memory was 258.6 MB in the beginning and 112.8 MB in the end (delta: 145.8 MB). Peak memory consumption was 144.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 82 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 476 SDtfs, 236 SDslu, 381 SDs, 0 SdLazy, 51 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1543occurred 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: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 294 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 159 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 5832 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...