/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 23:59:17,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 23:59:17,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 23:59:17,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-13 23:59:17,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-13 23:59:17,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-13 23:59:17,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-13 23:59:17,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-13 23:59:17,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-13 23:59:17,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-13 23:59:17,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-13 23:59:17,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-13 23:59:17,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-13 23:59:17,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-13 23:59:17,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-13 23:59:17,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-13 23:59:17,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-13 23:59:17,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-13 23:59:17,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-13 23:59:17,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-13 23:59:17,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-13 23:59:17,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-13 23:59:17,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-13 23:59:17,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-13 23:59:17,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-13 23:59:17,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 23:59:17,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 23:59:17,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 23:59:17,829 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-Delay.epf [2021-07-13 23:59:17,847 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 23:59:17,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 23:59:17,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 23:59:17,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 23:59:17,849 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 23:59:17,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 23:59:17,849 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 23:59:17,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 23:59:17,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 23:59:17,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 23:59:17,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 23:59:17,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 23:59:17,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 23:59:17,850 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 23:59:17,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 23:59:17,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 23:59:17,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 23:59:17,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 23:59:17,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 23:59:17,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 23:59:17,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 23:59:17,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 23:59:17,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 23:59:17,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 23:59:17,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 23:59:17,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 23:59:17,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 23:59:17,851 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 23:59:17,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 23:59:17,852 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-13 23:59:17,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 23:59:18,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 23:59:18,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 23:59:18,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 23:59:18,136 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-13 23:59:18,137 INFO L275 PluginConnector]: CDTParser initialized [2021-07-13 23:59:18,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2021-07-13 23:59:18,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8d8820dc/db7d04c46f8f4b618aafcc53789d6a7b/FLAG506f221d4 [2021-07-13 23:59:18,583 INFO L306 CDTParser]: Found 1 translation units. [2021-07-13 23:59:18,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2021-07-13 23:59:18,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8d8820dc/db7d04c46f8f4b618aafcc53789d6a7b/FLAG506f221d4 [2021-07-13 23:59:18,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8d8820dc/db7d04c46f8f4b618aafcc53789d6a7b [2021-07-13 23:59:18,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 23:59:18,614 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-13 23:59:18,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-13 23:59:18,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-13 23:59:18,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-13 23:59:18,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:59:18" (1/1) ... [2021-07-13 23:59:18,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48a8cb4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:18, skipping insertion in model container [2021-07-13 23:59:18,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:59:18" (1/1) ... [2021-07-13 23:59:18,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-13 23:59:18,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-13 23:59:18,796 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-07-13 23:59:18,862 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-07-13 23:59:18,866 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-07-13 23:59:18,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 23:59:18,874 INFO L203 MainTranslator]: Completed pre-run [2021-07-13 23:59:18,883 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-07-13 23:59:18,902 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-07-13 23:59:18,904 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-07-13 23:59:18,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 23:59:18,933 INFO L208 MainTranslator]: Completed translation [2021-07-13 23:59:18,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:18 WrapperNode [2021-07-13 23:59:18,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-13 23:59:18,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 23:59:18,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 23:59:18,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 23:59:18,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:18" (1/1) ... [2021-07-13 23:59:18,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:18" (1/1) ... [2021-07-13 23:59:18,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 23:59:18,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 23:59:18,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 23:59:18,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 23:59:18,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:18" (1/1) ... [2021-07-13 23:59:18,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:18" (1/1) ... [2021-07-13 23:59:18,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:18" (1/1) ... [2021-07-13 23:59:18,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:18" (1/1) ... [2021-07-13 23:59:18,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:18" (1/1) ... [2021-07-13 23:59:18,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:18" (1/1) ... [2021-07-13 23:59:19,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:18" (1/1) ... [2021-07-13 23:59:19,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 23:59:19,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 23:59:19,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 23:59:19,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 23:59:19,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 23:59:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-13 23:59:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-07-13 23:59:19,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-07-13 23:59:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-07-13 23:59:19,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-07-13 23:59:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-13 23:59:19,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-13 23:59:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-13 23:59:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-13 23:59:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-13 23:59:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-13 23:59:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 23:59:19,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 23:59:19,047 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 23:59:19,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 23:59:19,326 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-07-13 23:59:19,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:59:19 BoogieIcfgContainer [2021-07-13 23:59:19,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 23:59:19,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 23:59:19,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 23:59:19,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 23:59:19,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:59:18" (1/3) ... [2021-07-13 23:59:19,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4463df21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:59:19, skipping insertion in model container [2021-07-13 23:59:19,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:18" (2/3) ... [2021-07-13 23:59:19,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4463df21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:59:19, skipping insertion in model container [2021-07-13 23:59:19,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:59:19" (3/3) ... [2021-07-13 23:59:19,334 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2021-07-13 23:59:19,338 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 23:59:19,339 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 23:59:19,339 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-07-13 23:59:19,339 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 23:59:19,368 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,368 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,368 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,369 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,369 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,369 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,369 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,369 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,369 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,369 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,369 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,370 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,370 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,370 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,370 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,370 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,371 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,371 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,371 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,371 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,372 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,372 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,372 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,372 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,372 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,372 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,373 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,373 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,374 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,374 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,374 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,374 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,375 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,375 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,376 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,376 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,376 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,378 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,378 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,378 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,380 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,380 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,380 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,380 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,380 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,381 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,381 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,381 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,381 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,381 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,381 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,381 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,382 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,382 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,382 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,382 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,382 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,384 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,384 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,384 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,386 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,386 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,386 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,386 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,386 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,387 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,391 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,391 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,391 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,391 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,392 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,392 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:19,401 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-13 23:59:19,420 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-13 23:59:19,438 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 23:59:19,438 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 23:59:19,438 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 23:59:19,438 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 23:59:19,438 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 23:59:19,438 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 23:59:19,439 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 23:59:19,439 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr1Thread1of1ForFork0======== [2021-07-13 23:59:19,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 1512 states, 1384 states have (on average 1.694364161849711) internal successors, (2345), 1511 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:19,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-07-13 23:59:19,662 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:19,663 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 23:59:19,664 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:19,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:19,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1600769794, now seen corresponding path program 1 times [2021-07-13 23:59:19,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:19,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911049983] [2021-07-13 23:59:19,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:19,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:19,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:19,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:19,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:19,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:19,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911049983] [2021-07-13 23:59:19,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911049983] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:19,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:19,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-13 23:59:19,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758290360] [2021-07-13 23:59:19,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-13 23:59:19,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:19,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-13 23:59:19,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-13 23:59:19,835 INFO L87 Difference]: Start difference. First operand has 1512 states, 1384 states have (on average 1.694364161849711) internal successors, (2345), 1511 states have internal predecessors, (2345), 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:19,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:19,856 INFO L93 Difference]: Finished difference Result 1512 states and 2102 transitions. [2021-07-13 23:59:19,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:59:19,857 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30 [2021-07-13 23:59:19,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:19,872 INFO L225 Difference]: With dead ends: 1512 [2021-07-13 23:59:19,873 INFO L226 Difference]: Without dead ends: 1133 [2021-07-13 23:59:19,873 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-13 23:59:19,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-07-13 23:59:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2021-07-13 23:59:19,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 1125 states have (on average 1.520888888888889) internal successors, (1711), 1132 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:19,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1711 transitions. [2021-07-13 23:59:19,934 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1711 transitions. Word has length 30 [2021-07-13 23:59:19,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:19,934 INFO L482 AbstractCegarLoop]: Abstraction has 1133 states and 1711 transitions. [2021-07-13 23:59:19,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:19,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1711 transitions. [2021-07-13 23:59:19,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-07-13 23:59:19,935 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:19,935 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 23:59:19,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 23:59:19,935 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:19,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:19,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1600740003, now seen corresponding path program 1 times [2021-07-13 23:59:19,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:19,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752069756] [2021-07-13 23:59:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:19,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:19,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:19,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:19,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:19,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:19,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:19,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:19,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:19,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752069756] [2021-07-13 23:59:19,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752069756] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:19,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:19,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 23:59:19,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691186305] [2021-07-13 23:59:19,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 23:59:19,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:19,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 23:59:19,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 23:59:19,992 INFO L87 Difference]: Start difference. First operand 1133 states and 1711 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:20,030 INFO L93 Difference]: Finished difference Result 1029 states and 1535 transitions. [2021-07-13 23:59:20,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 23:59:20,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-07-13 23:59:20,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:20,034 INFO L225 Difference]: With dead ends: 1029 [2021-07-13 23:59:20,035 INFO L226 Difference]: Without dead ends: 797 [2021-07-13 23:59:20,035 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 23:59:20,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-07-13 23:59:20,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 797. [2021-07-13 23:59:20,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 789 states have (on average 1.5196451204055768) internal successors, (1199), 796 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1199 transitions. [2021-07-13 23:59:20,056 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1199 transitions. Word has length 30 [2021-07-13 23:59:20,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:20,056 INFO L482 AbstractCegarLoop]: Abstraction has 797 states and 1199 transitions. [2021-07-13 23:59:20,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,057 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1199 transitions. [2021-07-13 23:59:20,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-07-13 23:59:20,059 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:20,059 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 23:59:20,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 23:59:20,059 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:20,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:20,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1441920676, now seen corresponding path program 1 times [2021-07-13 23:59:20,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:20,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509193424] [2021-07-13 23:59:20,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:20,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:20,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:20,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-13 23:59:20,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:20,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:20,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509193424] [2021-07-13 23:59:20,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509193424] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:20,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:20,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 23:59:20,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144474560] [2021-07-13 23:59:20,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 23:59:20,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:20,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 23:59:20,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 23:59:20,102 INFO L87 Difference]: Start difference. First operand 797 states and 1199 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:20,134 INFO L93 Difference]: Finished difference Result 1157 states and 1807 transitions. [2021-07-13 23:59:20,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 23:59:20,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2021-07-13 23:59:20,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:20,138 INFO L225 Difference]: With dead ends: 1157 [2021-07-13 23:59:20,138 INFO L226 Difference]: Without dead ends: 1157 [2021-07-13 23:59:20,138 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 23:59:20,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-07-13 23:59:20,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 837. [2021-07-13 23:59:20,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 829 states have (on average 1.523522316043426) internal successors, (1263), 836 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1263 transitions. [2021-07-13 23:59:20,153 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1263 transitions. Word has length 41 [2021-07-13 23:59:20,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:20,154 INFO L482 AbstractCegarLoop]: Abstraction has 837 states and 1263 transitions. [2021-07-13 23:59:20,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,154 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1263 transitions. [2021-07-13 23:59:20,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-07-13 23:59:20,156 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:20,156 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 23:59:20,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 23:59:20,157 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:20,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:20,157 INFO L82 PathProgramCache]: Analyzing trace with hash -378386566, now seen corresponding path program 2 times [2021-07-13 23:59:20,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:20,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776435960] [2021-07-13 23:59:20,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:20,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:20,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:20,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-13 23:59:20,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:20,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:20,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776435960] [2021-07-13 23:59:20,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776435960] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:20,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:20,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 23:59:20,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246579861] [2021-07-13 23:59:20,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 23:59:20,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:20,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 23:59:20,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 23:59:20,193 INFO L87 Difference]: Start difference. First operand 837 states and 1263 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:20,217 INFO L93 Difference]: Finished difference Result 1186 states and 1856 transitions. [2021-07-13 23:59:20,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 23:59:20,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2021-07-13 23:59:20,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:20,218 INFO L225 Difference]: With dead ends: 1186 [2021-07-13 23:59:20,218 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 23:59:20,218 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 23:59:20,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 23:59:20,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 23:59:20,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 23:59:20,219 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-07-13 23:59:20,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:20,219 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 23:59:20,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,219 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 23:59:20,219 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 23:59:20,219 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 23:59:20,219 INFO L301 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE (1/3) [2021-07-13 23:59:20,221 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-07-13 23:59:20,221 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 23:59:20,221 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 23:59:20,221 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 23:59:20,221 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 23:59:20,221 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 23:59:20,222 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 23:59:20,222 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 23:59:20,222 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 23:59:20,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 138 states have (on average 1.3478260869565217) internal successors, (186), 149 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,230 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 23:59:20,230 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/3) [2021-07-13 23:59:20,230 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-13 23:59:20,231 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 23:59:20,231 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 23:59:20,231 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 23:59:20,231 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 23:59:20,231 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 23:59:20,231 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 23:59:20,231 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 23:59:20,231 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr2Thread1of1ForFork1======== [2021-07-13 23:59:20,333 INFO L276 IsEmpty]: Start isEmpty. Operand has 1542 states, 1447 states have (on average 2.2985487214927436) internal successors, (3326), 1541 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-13 23:59:20,334 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:20,334 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 23:59:20,334 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:20,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:20,334 INFO L82 PathProgramCache]: Analyzing trace with hash -339970580, now seen corresponding path program 1 times [2021-07-13 23:59:20,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:20,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93520792] [2021-07-13 23:59:20,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:20,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:20,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:20,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:20,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93520792] [2021-07-13 23:59:20,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93520792] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:20,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:20,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-13 23:59:20,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635339882] [2021-07-13 23:59:20,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-13 23:59:20,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:20,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-13 23:59:20,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-13 23:59:20,374 INFO L87 Difference]: Start difference. First operand has 1542 states, 1447 states have (on average 2.2985487214927436) internal successors, (3326), 1541 states have internal predecessors, (3326), 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 18.0) internal successors, (36), 2 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) [2021-07-13 23:59:20,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:20,383 INFO L93 Difference]: Finished difference Result 1542 states and 3061 transitions. [2021-07-13 23:59:20,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:59:20,383 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 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 [2021-07-13 23:59:20,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:20,389 INFO L225 Difference]: With dead ends: 1542 [2021-07-13 23:59:20,389 INFO L226 Difference]: Without dead ends: 1072 [2021-07-13 23:59:20,389 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-13 23:59:20,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-07-13 23:59:20,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2021-07-13 23:59:20,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1069 states have (on average 2.263797942001871) internal successors, (2420), 1071 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 2420 transitions. [2021-07-13 23:59:20,409 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 2420 transitions. Word has length 36 [2021-07-13 23:59:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:20,409 INFO L482 AbstractCegarLoop]: Abstraction has 1072 states and 2420 transitions. [2021-07-13 23:59:20,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 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) [2021-07-13 23:59:20,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 2420 transitions. [2021-07-13 23:59:20,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-13 23:59:20,409 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:20,410 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 23:59:20,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 23:59:20,410 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:20,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:20,410 INFO L82 PathProgramCache]: Analyzing trace with hash -339940789, now seen corresponding path program 1 times [2021-07-13 23:59:20,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:20,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592661033] [2021-07-13 23:59:20,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:20,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:20,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-13 23:59:20,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:20,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:20,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592661033] [2021-07-13 23:59:20,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592661033] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:20,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:20,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 23:59:20,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172582822] [2021-07-13 23:59:20,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 23:59:20,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:20,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 23:59:20,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 23:59:20,432 INFO L87 Difference]: Start difference. First operand 1072 states and 2420 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 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) [2021-07-13 23:59:20,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:20,444 INFO L93 Difference]: Finished difference Result 991 states and 2211 transitions. [2021-07-13 23:59:20,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 23:59:20,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 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 [2021-07-13 23:59:20,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:20,447 INFO L225 Difference]: With dead ends: 991 [2021-07-13 23:59:20,447 INFO L226 Difference]: Without dead ends: 680 [2021-07-13 23:59:20,447 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 23:59:20,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-07-13 23:59:20,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 680. [2021-07-13 23:59:20,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 678 states have (on average 2.247787610619469) internal successors, (1524), 679 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1524 transitions. [2021-07-13 23:59:20,459 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1524 transitions. Word has length 36 [2021-07-13 23:59:20,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:20,459 INFO L482 AbstractCegarLoop]: Abstraction has 680 states and 1524 transitions. [2021-07-13 23:59:20,459 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 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) [2021-07-13 23:59:20,459 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1524 transitions. [2021-07-13 23:59:20,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-07-13 23:59:20,460 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:20,460 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 23:59:20,460 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 23:59:20,460 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:20,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:20,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1198594574, now seen corresponding path program 1 times [2021-07-13 23:59:20,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:20,460 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989219638] [2021-07-13 23:59:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:20,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:20,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:20,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-13 23:59:20,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:20,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:20,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989219638] [2021-07-13 23:59:20,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989219638] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:20,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:20,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 23:59:20,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244091843] [2021-07-13 23:59:20,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 23:59:20,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:20,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 23:59:20,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 23:59:20,484 INFO L87 Difference]: Start difference. First operand 680 states and 1524 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:20,509 INFO L93 Difference]: Finished difference Result 1112 states and 2560 transitions. [2021-07-13 23:59:20,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 23:59:20,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2021-07-13 23:59:20,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:20,512 INFO L225 Difference]: With dead ends: 1112 [2021-07-13 23:59:20,513 INFO L226 Difference]: Without dead ends: 960 [2021-07-13 23:59:20,513 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 23:59:20,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-07-13 23:59:20,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 637. [2021-07-13 23:59:20,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 635 states have (on average 2.2267716535433073) internal successors, (1414), 636 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1414 transitions. [2021-07-13 23:59:20,526 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1414 transitions. Word has length 41 [2021-07-13 23:59:20,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:20,526 INFO L482 AbstractCegarLoop]: Abstraction has 637 states and 1414 transitions. [2021-07-13 23:59:20,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,526 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1414 transitions. [2021-07-13 23:59:20,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-07-13 23:59:20,527 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:20,527 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 23:59:20,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 23:59:20,527 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:20,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:20,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1432841266, now seen corresponding path program 2 times [2021-07-13 23:59:20,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:20,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122477275] [2021-07-13 23:59:20,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:20,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:20,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:20,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-13 23:59:20,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:20,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:20,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:20,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122477275] [2021-07-13 23:59:20,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122477275] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:20,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:20,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 23:59:20,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718863535] [2021-07-13 23:59:20,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 23:59:20,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:20,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 23:59:20,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 23:59:20,585 INFO L87 Difference]: Start difference. First operand 637 states and 1414 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:20,607 INFO L93 Difference]: Finished difference Result 934 states and 2193 transitions. [2021-07-13 23:59:20,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 23:59:20,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2021-07-13 23:59:20,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:20,608 INFO L225 Difference]: With dead ends: 934 [2021-07-13 23:59:20,608 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 23:59:20,608 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 23:59:20,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 23:59:20,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 23:59:20,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 23:59:20,608 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-07-13 23:59:20,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:20,608 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 23:59:20,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 23:59:20,609 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 23:59:20,609 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 23:59:20,609 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 23:59:20,609 INFO L301 ceAbstractionStarter]: Result for error location thr2Thread1of1ForFork1 was SAFE (3/3) [2021-07-13 23:59:20,609 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 23:59:20,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 11:59:20 BasicIcfg [2021-07-13 23:59:20,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 23:59:20,611 INFO L168 Benchmark]: Toolchain (without parser) took 1996.83 ms. Allocated memory was 223.3 MB in the beginning and 269.5 MB in the end (delta: 46.1 MB). Free memory was 187.4 MB in the beginning and 137.4 MB in the end (delta: 50.1 MB). Peak memory consumption was 96.9 MB. Max. memory is 8.0 GB. [2021-07-13 23:59:20,611 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 223.3 MB. Free memory is still 205.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 23:59:20,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.84 ms. Allocated memory is still 223.3 MB. Free memory was 187.3 MB in the beginning and 196.5 MB in the end (delta: -9.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-13 23:59:20,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.07 ms. Allocated memory is still 223.3 MB. Free memory was 196.5 MB in the beginning and 194.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 23:59:20,612 INFO L168 Benchmark]: Boogie Preprocessor took 23.77 ms. Allocated memory is still 223.3 MB. Free memory was 194.5 MB in the beginning and 193.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 23:59:20,612 INFO L168 Benchmark]: RCFGBuilder took 326.31 ms. Allocated memory is still 223.3 MB. Free memory was 193.3 MB in the beginning and 168.3 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-07-13 23:59:20,613 INFO L168 Benchmark]: TraceAbstraction took 1281.12 ms. Allocated memory was 223.3 MB in the beginning and 269.5 MB in the end (delta: 46.1 MB). Free memory was 168.1 MB in the beginning and 137.4 MB in the end (delta: 30.8 MB). Peak memory consumption was 78.5 MB. Max. memory is 8.0 GB. [2021-07-13 23:59:20,614 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 223.3 MB. Free memory is still 205.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 316.84 ms. Allocated memory is still 223.3 MB. Free memory was 187.3 MB in the beginning and 196.5 MB in the end (delta: -9.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.07 ms. Allocated memory is still 223.3 MB. Free memory was 196.5 MB in the beginning and 194.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.77 ms. Allocated memory is still 223.3 MB. Free memory was 194.5 MB in the beginning and 193.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 326.31 ms. Allocated memory is still 223.3 MB. Free memory was 193.3 MB in the beginning and 168.3 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1281.12 ms. Allocated memory was 223.3 MB in the beginning and 269.5 MB in the end (delta: 46.1 MB). Free memory was 168.1 MB in the beginning and 137.4 MB in the end (delta: 30.8 MB). Peak memory consumption was 78.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 4653, positive: 3821, positive conditional: 3821, positive unconditional: 0, negative: 832, negative conditional: 832, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3901, positive: 3821, positive conditional: 0, positive unconditional: 3821, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 895, positive: 875, positive conditional: 0, positive unconditional: 875, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 895, positive: 874, positive conditional: 0, positive unconditional: 874, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 21, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 29, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3901, positive: 2946, positive conditional: 0, positive unconditional: 2946, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 895, unknown conditional: 0, unknown unconditional: 895] , Statistics on independence cache: Total cache size (in pairs): 895, Positive cache size: 875, Positive conditional cache size: 0, Positive unconditional cache size: 875, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Independence queries for same thread: 752 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 185, positive: 130, positive conditional: 130, positive unconditional: 0, negative: 55, negative conditional: 55, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 130, positive: 130, positive conditional: 0, positive unconditional: 130, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 130, positive: 130, positive conditional: 0, positive unconditional: 130, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 130, positive: 130, positive conditional: 0, positive unconditional: 130, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 130, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 130, unknown conditional: 0, unknown unconditional: 130] , Statistics on independence cache: Total cache size (in pairs): 130, Positive cache size: 130, Positive conditional cache size: 0, Positive unconditional cache size: 130, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 55 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 5422, positive: 4519, positive conditional: 4519, positive unconditional: 0, negative: 903, negative conditional: 903, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 4590, positive: 4519, positive conditional: 0, positive unconditional: 4519, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1119, positive: 1095, positive conditional: 0, positive unconditional: 1095, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1119, positive: 1093, positive conditional: 0, positive unconditional: 1093, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 17, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4590, positive: 3424, positive conditional: 0, positive unconditional: 3424, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 1119, unknown conditional: 0, unknown unconditional: 1119] , Statistics on independence cache: Total cache size (in pairs): 1119, Positive cache size: 1095, Positive conditional cache size: 0, Positive unconditional cache size: 1095, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Independence queries for same thread: 832 - PositiveResult [Line: 739]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1Thread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 132 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 783.4ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 15.6ms, AutomataDifference: 154.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 212.7ms, PartialOrderReductionTime: 189.1ms, HoareTripleCheckerStatistics: 360 SDtfs, 175 SDslu, 322 SDs, 0 SdLazy, 41 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1512occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 88.0ms AutomataMinimizationTime, 4 MinimizatonAttempts, 320 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.1ms SsaConstructionTime, 55.5ms SatisfiabilityAnalysisTime, 136.4ms InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 174 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 132 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.8ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.7ms, PartialOrderReductionTime: 6.3ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr2Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 132 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 377.9ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 5.6ms, AutomataDifference: 85.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 98.7ms, PartialOrderReductionTime: 97.7ms, HoareTripleCheckerStatistics: 382 SDtfs, 167 SDslu, 351 SDs, 0 SdLazy, 43 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1542occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 43.7ms AutomataMinimizationTime, 4 MinimizatonAttempts, 323 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.2ms SsaConstructionTime, 27.2ms SatisfiabilityAnalysisTime, 85.0ms InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 176 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...