/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-12 00:23:05,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-12 00:23:05,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-12 00:23:05,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-12 00:23:05,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-12 00:23:05,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-12 00:23:05,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-12 00:23:05,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-12 00:23:05,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-12 00:23:05,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-12 00:23:05,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-12 00:23:05,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-12 00:23:05,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-12 00:23:05,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-12 00:23:05,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-12 00:23:05,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-12 00:23:05,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-12 00:23:05,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-12 00:23:05,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-12 00:23:05,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-12 00:23:05,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-12 00:23:05,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-12 00:23:05,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-12 00:23:05,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-12 00:23:05,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-12 00:23:05,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-12 00:23:05,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-12 00:23:05,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-12 00:23:05,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-12 00:23:05,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-12 00:23:05,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-12 00:23:05,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-12 00:23:05,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-12 00:23:05,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-12 00:23:05,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-12 00:23:05,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-12 00:23:05,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-12 00:23:05,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-12 00:23:05,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-12 00:23:05,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-12 00:23:05,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-12 00:23:05,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-12 00:23:06,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-12 00:23:06,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-12 00:23:06,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-12 00:23:06,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-12 00:23:06,044 INFO L138 SettingsManager]: * Use SBE=true [2020-09-12 00:23:06,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-12 00:23:06,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-12 00:23:06,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-12 00:23:06,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-12 00:23:06,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-12 00:23:06,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-12 00:23:06,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-12 00:23:06,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-12 00:23:06,047 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-12 00:23:06,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-12 00:23:06,048 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-12 00:23:06,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-12 00:23:06,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-12 00:23:06,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-12 00:23:06,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-12 00:23:06,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-12 00:23:06,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-12 00:23:06,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-12 00:23:06,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-12 00:23:06,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-12 00:23:06,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-12 00:23:06,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-12 00:23:06,050 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-12 00:23:06,050 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-12 00:23:06,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-12 00:23:06,051 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-12 00:23:06,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-12 00:23:06,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-12 00:23:06,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-12 00:23:06,548 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-12 00:23:06,549 INFO L275 PluginConnector]: CDTParser initialized [2020-09-12 00:23:06,550 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2020-09-12 00:23:06,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f211e49f9/f8f0df20a33440bc969b6bd0717d1e6e/FLAG676a4b347 [2020-09-12 00:23:07,365 INFO L306 CDTParser]: Found 1 translation units. [2020-09-12 00:23:07,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2020-09-12 00:23:07,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f211e49f9/f8f0df20a33440bc969b6bd0717d1e6e/FLAG676a4b347 [2020-09-12 00:23:07,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f211e49f9/f8f0df20a33440bc969b6bd0717d1e6e [2020-09-12 00:23:07,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-12 00:23:07,555 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-12 00:23:07,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-12 00:23:07,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-12 00:23:07,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-12 00:23:07,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:23:07" (1/1) ... [2020-09-12 00:23:07,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4056ff15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:23:07, skipping insertion in model container [2020-09-12 00:23:07,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:23:07" (1/1) ... [2020-09-12 00:23:07,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-12 00:23:07,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-12 00:23:08,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:23:08,361 INFO L203 MainTranslator]: Completed pre-run [2020-09-12 00:23:08,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:23:08,662 INFO L208 MainTranslator]: Completed translation [2020-09-12 00:23:08,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:23:08 WrapperNode [2020-09-12 00:23:08,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-12 00:23:08,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-12 00:23:08,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-12 00:23:08,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-12 00:23:08,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:23:08" (1/1) ... [2020-09-12 00:23:08,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:23:08" (1/1) ... [2020-09-12 00:23:08,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-12 00:23:08,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-12 00:23:08,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-12 00:23:08,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-12 00:23:08,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:23:08" (1/1) ... [2020-09-12 00:23:08,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:23:08" (1/1) ... [2020-09-12 00:23:08,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:23:08" (1/1) ... [2020-09-12 00:23:08,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:23:08" (1/1) ... [2020-09-12 00:23:08,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:23:08" (1/1) ... [2020-09-12 00:23:08,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:23:08" (1/1) ... [2020-09-12 00:23:08,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:23:08" (1/1) ... [2020-09-12 00:23:08,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-12 00:23:08,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-12 00:23:08,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-12 00:23:08,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-12 00:23:08,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:23:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-12 00:23:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-12 00:23:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-12 00:23:08,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-12 00:23:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2020-09-12 00:23:09,000 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2020-09-12 00:23:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-12 00:23:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-12 00:23:09,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-12 00:23:09,005 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-12 00:23:09,473 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-12 00:23:09,474 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-12 00:23:09,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:23:09 BoogieIcfgContainer [2020-09-12 00:23:09,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-12 00:23:09,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-12 00:23:09,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-12 00:23:09,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-12 00:23:09,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 12:23:07" (1/3) ... [2020-09-12 00:23:09,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a1ba74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:23:09, skipping insertion in model container [2020-09-12 00:23:09,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:23:08" (2/3) ... [2020-09-12 00:23:09,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a1ba74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:23:09, skipping insertion in model container [2020-09-12 00:23:09,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:23:09" (3/3) ... [2020-09-12 00:23:09,488 INFO L109 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2020-09-12 00:23:09,500 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-12 00:23:09,501 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-12 00:23:09,511 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-12 00:23:09,513 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-12 00:23:09,540 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,541 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,541 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,541 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,542 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,542 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,542 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,542 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,543 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,543 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,543 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,543 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,543 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,544 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,544 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,544 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,544 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,545 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,545 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,545 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,545 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,550 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,550 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,550 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,550 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,551 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,551 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,551 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,551 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:23:09,583 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-12 00:23:09,605 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:23:09,605 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:23:09,605 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:23:09,606 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:23:09,606 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:23:09,606 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:23:09,606 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:23:09,606 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:23:09,624 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 85 transitions, 178 flow [2020-09-12 00:23:09,627 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions, 178 flow [2020-09-12 00:23:09,688 INFO L129 PetriNetUnfolder]: 7/84 cut-off events. [2020-09-12 00:23:09,688 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-09-12 00:23:09,694 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2020-09-12 00:23:09,697 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions, 178 flow [2020-09-12 00:23:09,732 INFO L129 PetriNetUnfolder]: 7/84 cut-off events. [2020-09-12 00:23:09,732 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-09-12 00:23:09,733 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2020-09-12 00:23:09,735 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 640 [2020-09-12 00:23:09,736 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:23:11,062 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-12 00:23:11,275 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-12 00:23:11,914 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-09-12 00:23:12,266 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-12 00:23:12,848 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-12 00:23:13,272 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-12 00:23:14,783 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2020-09-12 00:23:15,475 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-09-12 00:23:15,478 INFO L206 etLargeBlockEncoding]: Checked pairs total: 510 [2020-09-12 00:23:15,478 INFO L214 etLargeBlockEncoding]: Total number of compositions: 78 [2020-09-12 00:23:15,484 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 13 transitions, 34 flow [2020-09-12 00:23:15,495 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 17 states. [2020-09-12 00:23:15,497 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-09-12 00:23:15,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-12 00:23:15,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:23:15,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:23:15,507 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:23:15,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:23:15,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1450466956, now seen corresponding path program 1 times [2020-09-12 00:23:15,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:23:15,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720112825] [2020-09-12 00:23:15,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:23:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:23:15,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:23:15,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720112825] [2020-09-12 00:23:15,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:23:15,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:23:15,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1391369187] [2020-09-12 00:23:15,816 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:23:15,820 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:23:15,839 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2020-09-12 00:23:15,839 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:23:15,877 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [122#(< ULTIMATE.start_main_~i~1 20)] [2020-09-12 00:23:15,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:23:15,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:23:15,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:23:15,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:23:15,901 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2020-09-12 00:23:15,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:23:15,944 INFO L93 Difference]: Finished difference Result 24 states and 44 transitions. [2020-09-12 00:23:15,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:23:15,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-12 00:23:15,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:23:15,961 INFO L225 Difference]: With dead ends: 24 [2020-09-12 00:23:15,961 INFO L226 Difference]: Without dead ends: 24 [2020-09-12 00:23:15,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:23:15,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-12 00:23:16,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-12 00:23:16,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-12 00:23:16,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 44 transitions. [2020-09-12 00:23:16,009 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 44 transitions. Word has length 8 [2020-09-12 00:23:16,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:23:16,010 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 44 transitions. [2020-09-12 00:23:16,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:23:16,010 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 44 transitions. [2020-09-12 00:23:16,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-12 00:23:16,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:23:16,011 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:23:16,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-12 00:23:16,012 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:23:16,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:23:16,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1357612780, now seen corresponding path program 1 times [2020-09-12 00:23:16,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:23:16,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912582838] [2020-09-12 00:23:16,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:23:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:23:16,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:23:16,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912582838] [2020-09-12 00:23:16,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288538041] [2020-09-12 00:23:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:23:16,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-12 00:23:16,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:23:16,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-12 00:23:16,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-12 00:23:16,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-09-12 00:23:16,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [688362673] [2020-09-12 00:23:16,277 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:23:16,278 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:23:16,286 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-09-12 00:23:16,286 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:23:16,330 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:23:16,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:23:16,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:23:16,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:23:16,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:23:16,332 INFO L87 Difference]: Start difference. First operand 24 states and 44 transitions. Second operand 3 states. [2020-09-12 00:23:16,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:23:16,346 INFO L93 Difference]: Finished difference Result 34 states and 64 transitions. [2020-09-12 00:23:16,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:23:16,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-12 00:23:16,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:23:16,348 INFO L225 Difference]: With dead ends: 34 [2020-09-12 00:23:16,348 INFO L226 Difference]: Without dead ends: 34 [2020-09-12 00:23:16,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:23:16,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-12 00:23:16,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2020-09-12 00:23:16,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-12 00:23:16,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 54 transitions. [2020-09-12 00:23:16,359 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 54 transitions. Word has length 10 [2020-09-12 00:23:16,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:23:16,359 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 54 transitions. [2020-09-12 00:23:16,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:23:16,360 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 54 transitions. [2020-09-12 00:23:16,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-12 00:23:16,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:23:16,361 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:23:16,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-12 00:23:16,562 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:23:16,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:23:16,563 INFO L82 PathProgramCache]: Analyzing trace with hash -608119097, now seen corresponding path program 1 times [2020-09-12 00:23:16,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:23:16,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917802976] [2020-09-12 00:23:16,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:23:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:23:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-12 00:23:16,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917802976] [2020-09-12 00:23:16,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241452823] [2020-09-12 00:23:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:23:16,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2020-09-12 00:23:16,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:23:16,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-12 00:23:16,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:23:16,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-09-12 00:23:16,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1158930896] [2020-09-12 00:23:16,815 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:23:16,816 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:23:16,819 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-09-12 00:23:16,819 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:23:16,882 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [358#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-12 00:23:16,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-12 00:23:16,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:23:16,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-12 00:23:16,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:23:16,884 INFO L87 Difference]: Start difference. First operand 29 states and 54 transitions. Second operand 6 states. [2020-09-12 00:23:16,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:23:16,910 INFO L93 Difference]: Finished difference Result 44 states and 84 transitions. [2020-09-12 00:23:16,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:23:16,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-12 00:23:16,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:23:16,912 INFO L225 Difference]: With dead ends: 44 [2020-09-12 00:23:16,912 INFO L226 Difference]: Without dead ends: 44 [2020-09-12 00:23:16,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:23:16,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-12 00:23:16,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-09-12 00:23:16,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-12 00:23:16,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 74 transitions. [2020-09-12 00:23:16,921 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 74 transitions. Word has length 12 [2020-09-12 00:23:16,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:23:16,921 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 74 transitions. [2020-09-12 00:23:16,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-12 00:23:16,922 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 74 transitions. [2020-09-12 00:23:16,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-12 00:23:16,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:23:16,923 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:23:17,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:17,137 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:23:17,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:23:17,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1899195462, now seen corresponding path program 2 times [2020-09-12 00:23:17,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:23:17,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228728932] [2020-09-12 00:23:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:23:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:23:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-12 00:23:17,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228728932] [2020-09-12 00:23:17,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269672135] [2020-09-12 00:23:17,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:17,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-12 00:23:17,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-12 00:23:17,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-12 00:23:17,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:23:17,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-12 00:23:17,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:23:17,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-09-12 00:23:17,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1299601451] [2020-09-12 00:23:17,320 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:23:17,321 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:23:17,324 INFO L274 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-09-12 00:23:17,324 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:23:17,419 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [526#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 527#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-12 00:23:17,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-12 00:23:17,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:23:17,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-12 00:23:17,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:23:17,420 INFO L87 Difference]: Start difference. First operand 39 states and 74 transitions. Second operand 8 states. [2020-09-12 00:23:17,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:23:17,468 INFO L93 Difference]: Finished difference Result 54 states and 104 transitions. [2020-09-12 00:23:17,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-12 00:23:17,468 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-09-12 00:23:17,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:23:17,469 INFO L225 Difference]: With dead ends: 54 [2020-09-12 00:23:17,470 INFO L226 Difference]: Without dead ends: 54 [2020-09-12 00:23:17,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-12 00:23:17,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-12 00:23:17,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-09-12 00:23:17,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-12 00:23:17,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 94 transitions. [2020-09-12 00:23:17,477 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 94 transitions. Word has length 14 [2020-09-12 00:23:17,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:23:17,477 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 94 transitions. [2020-09-12 00:23:17,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-12 00:23:17,478 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 94 transitions. [2020-09-12 00:23:17,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-12 00:23:17,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:23:17,479 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:23:17,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:17,694 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:23:17,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:23:17,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1378033683, now seen corresponding path program 3 times [2020-09-12 00:23:17,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:23:17,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037866156] [2020-09-12 00:23:17,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:23:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:23:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-12 00:23:17,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037866156] [2020-09-12 00:23:17,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60323803] [2020-09-12 00:23:17,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:17,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-09-12 00:23:17,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-12 00:23:17,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-12 00:23:17,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:23:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-12 00:23:17,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:23:17,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-09-12 00:23:17,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [701349275] [2020-09-12 00:23:17,943 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:23:17,947 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:23:17,958 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 38 transitions. [2020-09-12 00:23:17,958 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:23:18,168 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [736#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 2) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 737#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 738#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 739#(< ULTIMATE.start_main_~i~1 20), 740#(or (<= 20 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 19)), 741#(or (<= 19 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 18))] [2020-09-12 00:23:18,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-12 00:23:18,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:23:18,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-12 00:23:18,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-09-12 00:23:18,170 INFO L87 Difference]: Start difference. First operand 49 states and 94 transitions. Second operand 15 states. [2020-09-12 00:23:19,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:23:19,834 INFO L93 Difference]: Finished difference Result 112 states and 220 transitions. [2020-09-12 00:23:19,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-12 00:23:19,835 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2020-09-12 00:23:19,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:23:19,837 INFO L225 Difference]: With dead ends: 112 [2020-09-12 00:23:19,837 INFO L226 Difference]: Without dead ends: 112 [2020-09-12 00:23:19,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=760, Invalid=2102, Unknown=0, NotChecked=0, Total=2862 [2020-09-12 00:23:19,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-12 00:23:19,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 103. [2020-09-12 00:23:19,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-12 00:23:19,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 202 transitions. [2020-09-12 00:23:19,852 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 202 transitions. Word has length 16 [2020-09-12 00:23:19,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:23:19,853 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 202 transitions. [2020-09-12 00:23:19,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-12 00:23:19,853 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 202 transitions. [2020-09-12 00:23:19,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-12 00:23:19,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:23:19,854 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:23:20,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:20,064 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:23:20,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:23:20,064 INFO L82 PathProgramCache]: Analyzing trace with hash -797549408, now seen corresponding path program 4 times [2020-09-12 00:23:20,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:23:20,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475044857] [2020-09-12 00:23:20,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:23:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:23:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-12 00:23:20,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475044857] [2020-09-12 00:23:20,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308064868] [2020-09-12 00:23:20,187 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:20,272 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-12 00:23:20,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-12 00:23:20,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-12 00:23:20,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:23:20,310 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-12 00:23:20,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:23:20,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-09-12 00:23:20,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [377060901] [2020-09-12 00:23:20,312 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:23:20,317 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:23:20,326 INFO L274 McrAutomatonBuilder]: Finished intersection with 40 states and 56 transitions. [2020-09-12 00:23:20,326 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:23:20,568 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [1240#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 1241#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 2) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 1242#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 1243#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-12 00:23:20,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-12 00:23:20,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:23:20,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-12 00:23:20,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-09-12 00:23:20,570 INFO L87 Difference]: Start difference. First operand 103 states and 202 transitions. Second operand 12 states. [2020-09-12 00:23:20,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:23:20,642 INFO L93 Difference]: Finished difference Result 130 states and 256 transitions. [2020-09-12 00:23:20,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-12 00:23:20,643 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-09-12 00:23:20,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:23:20,645 INFO L225 Difference]: With dead ends: 130 [2020-09-12 00:23:20,645 INFO L226 Difference]: Without dead ends: 130 [2020-09-12 00:23:20,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-09-12 00:23:20,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-12 00:23:20,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 121. [2020-09-12 00:23:20,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-12 00:23:20,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 238 transitions. [2020-09-12 00:23:20,657 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 238 transitions. Word has length 22 [2020-09-12 00:23:20,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:23:20,657 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 238 transitions. [2020-09-12 00:23:20,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-12 00:23:20,658 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 238 transitions. [2020-09-12 00:23:20,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-12 00:23:20,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:23:20,660 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:23:20,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-09-12 00:23:20,875 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:23:20,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:23:20,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1172519469, now seen corresponding path program 5 times [2020-09-12 00:23:20,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:23:20,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364169701] [2020-09-12 00:23:20,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:23:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:23:20,993 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-12 00:23:20,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364169701] [2020-09-12 00:23:20,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382112703] [2020-09-12 00:23:20,994 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:21,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-09-12 00:23:21,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-12 00:23:21,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-12 00:23:21,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:23:21,185 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-12 00:23:21,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:23:21,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2020-09-12 00:23:21,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1474717611] [2020-09-12 00:23:21,186 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:23:21,189 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:23:21,198 INFO L274 McrAutomatonBuilder]: Finished intersection with 44 states and 62 transitions. [2020-09-12 00:23:21,198 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:23:21,703 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 12 new interpolants: [1712#(or (<= 16 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 15)), 1713#(or (< ULTIMATE.start_main_~i~1 14) (<= 15 ULTIMATE.start_main_~i~1)), 1702#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 4) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 1703#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 1704#(or (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 2)), 1705#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0)), 1706#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 1707#(< ULTIMATE.start_main_~i~1 20), 1708#(or (<= 20 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 19)), 1709#(or (<= 19 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 18)), 1710#(or (< ULTIMATE.start_main_~i~1 17) (<= 18 ULTIMATE.start_main_~i~1)), 1711#(or (< ULTIMATE.start_main_~i~1 16) (<= 17 ULTIMATE.start_main_~i~1))] [2020-09-12 00:23:21,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-12 00:23:21,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:23:21,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-12 00:23:21,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2020-09-12 00:23:21,705 INFO L87 Difference]: Start difference. First operand 121 states and 238 transitions. Second operand 27 states. [2020-09-12 00:23:29,107 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-09-12 00:23:29,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:23:29,110 INFO L93 Difference]: Finished difference Result 276 states and 548 transitions. [2020-09-12 00:23:29,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2020-09-12 00:23:29,110 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 24 [2020-09-12 00:23:29,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:23:29,112 INFO L225 Difference]: With dead ends: 276 [2020-09-12 00:23:29,113 INFO L226 Difference]: Without dead ends: 276 [2020-09-12 00:23:29,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 137 SyntacticMatches, 4 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6533 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=4924, Invalid=14536, Unknown=0, NotChecked=0, Total=19460 [2020-09-12 00:23:29,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-09-12 00:23:29,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 259. [2020-09-12 00:23:29,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-09-12 00:23:29,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 514 transitions. [2020-09-12 00:23:29,137 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 514 transitions. Word has length 24 [2020-09-12 00:23:29,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:23:29,137 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 514 transitions. [2020-09-12 00:23:29,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-12 00:23:29,137 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 514 transitions. [2020-09-12 00:23:29,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-12 00:23:29,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:23:29,141 INFO L422 BasicCegarLoop]: trace histogram [14, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:23:29,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:29,356 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:23:29,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:23:29,356 INFO L82 PathProgramCache]: Analyzing trace with hash 514042566, now seen corresponding path program 6 times [2020-09-12 00:23:29,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:23:29,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003380561] [2020-09-12 00:23:29,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:23:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:23:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 6 proven. 105 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-12 00:23:29,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003380561] [2020-09-12 00:23:29,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140769636] [2020-09-12 00:23:29,655 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:29,764 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-09-12 00:23:29,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-12 00:23:29,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-12 00:23:29,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:23:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-09-12 00:23:29,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:23:29,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 24 [2020-09-12 00:23:29,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [825797004] [2020-09-12 00:23:29,918 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:23:29,926 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:23:29,939 INFO L274 McrAutomatonBuilder]: Finished intersection with 64 states and 92 transitions. [2020-09-12 00:23:29,940 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:23:31,223 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 21 new interpolants: [2954#(< ULTIMATE.start_main_~i~1 20), 2955#(or (<= 20 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 19)), 2956#(or (<= 19 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 18)), 2957#(or (< ULTIMATE.start_main_~i~1 17) (<= 18 ULTIMATE.start_main_~i~1)), 2958#(or (< ULTIMATE.start_main_~i~1 16) (<= 17 ULTIMATE.start_main_~i~1)), 2959#(or (<= 16 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 15)), 2960#(or (< ULTIMATE.start_main_~i~1 14) (<= 15 ULTIMATE.start_main_~i~1)), 2961#(or (<= 14 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 13)), 2962#(or (< ULTIMATE.start_main_~i~1 12) (<= 13 ULTIMATE.start_main_~i~1)), 2963#(or (<= 12 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 11)), 2964#(or (< ULTIMATE.start_main_~i~1 10) (<= 11 ULTIMATE.start_main_~i~1)), 2965#(or (< ULTIMATE.start_main_~i~1 9) (<= 10 ULTIMATE.start_main_~i~1)), 2966#(or (< ULTIMATE.start_main_~i~1 8) (<= 9 ULTIMATE.start_main_~i~1)), 2967#(or (< ULTIMATE.start_main_~i~1 7) (<= 8 ULTIMATE.start_main_~i~1)), 2968#(or (<= 7 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 6)), 2969#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 5) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 2970#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 4) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 2971#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 2972#(or (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 2)), 2973#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 2974#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-12 00:23:31,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-09-12 00:23:31,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:23:31,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-09-12 00:23:31,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=1566, Unknown=0, NotChecked=0, Total=1980 [2020-09-12 00:23:31,225 INFO L87 Difference]: Start difference. First operand 259 states and 514 transitions. Second operand 45 states. [2020-09-12 00:23:45,965 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2020-09-12 00:23:45,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:23:45,968 INFO L93 Difference]: Finished difference Result 418 states and 832 transitions. [2020-09-12 00:23:45,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2020-09-12 00:23:45,969 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 34 [2020-09-12 00:23:45,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:23:45,972 INFO L225 Difference]: With dead ends: 418 [2020-09-12 00:23:45,972 INFO L226 Difference]: Without dead ends: 418 [2020-09-12 00:23:45,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 212 SyntacticMatches, 5 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15851 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=11656, Invalid=36086, Unknown=0, NotChecked=0, Total=47742 [2020-09-12 00:23:45,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-09-12 00:23:45,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 395. [2020-09-12 00:23:45,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-09-12 00:23:45,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 786 transitions. [2020-09-12 00:23:45,999 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 786 transitions. Word has length 34 [2020-09-12 00:23:45,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:23:46,000 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 786 transitions. [2020-09-12 00:23:46,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-09-12 00:23:46,000 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 786 transitions. [2020-09-12 00:23:46,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-12 00:23:46,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:23:46,004 INFO L422 BasicCegarLoop]: trace histogram [20, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:23:46,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:46,220 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:23:46,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:23:46,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1980377447, now seen corresponding path program 7 times [2020-09-12 00:23:46,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:23:46,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986051755] [2020-09-12 00:23:46,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:23:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:23:46,418 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-12 00:23:46,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986051755] [2020-09-12 00:23:46,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204874097] [2020-09-12 00:23:46,419 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:23:46,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-12 00:23:46,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:23:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-12 00:23:46,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:23:46,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-09-12 00:23:46,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [838345318] [2020-09-12 00:23:46,536 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:23:46,547 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:23:46,565 INFO L274 McrAutomatonBuilder]: Finished intersection with 80 states and 116 transitions. [2020-09-12 00:23:46,566 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:23:47,018 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [4817#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 6) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 4818#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 5) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 4819#(or (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 4)), 4820#(or (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 3)), 4821#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 2) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 4822#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0)), 4823#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 14 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-12 00:23:47,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-12 00:23:47,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:23:47,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-12 00:23:47,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2020-09-12 00:23:47,020 INFO L87 Difference]: Start difference. First operand 395 states and 786 transitions. Second operand 18 states. [2020-09-12 00:23:47,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:23:47,189 INFO L93 Difference]: Finished difference Result 464 states and 924 transitions. [2020-09-12 00:23:47,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-12 00:23:47,189 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2020-09-12 00:23:47,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:23:47,193 INFO L225 Difference]: With dead ends: 464 [2020-09-12 00:23:47,193 INFO L226 Difference]: Without dead ends: 464 [2020-09-12 00:23:47,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 97 SyntacticMatches, 12 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-09-12 00:23:47,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-09-12 00:23:47,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 441. [2020-09-12 00:23:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-09-12 00:23:47,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 878 transitions. [2020-09-12 00:23:47,214 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 878 transitions. Word has length 42 [2020-09-12 00:23:47,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:23:47,214 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 878 transitions. [2020-09-12 00:23:47,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-12 00:23:47,215 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 878 transitions. [2020-09-12 00:23:47,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-12 00:23:47,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:23:47,219 INFO L422 BasicCegarLoop]: trace histogram [20, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:23:47,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-09-12 00:23:47,433 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:23:47,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:23:47,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1673963596, now seen corresponding path program 8 times [2020-09-12 00:23:47,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:23:47,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565784790] [2020-09-12 00:23:47,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:23:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:23:47,641 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-12 00:23:47,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565784790] [2020-09-12 00:23:47,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929287633] [2020-09-12 00:23:47,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:47,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-12 00:23:47,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-12 00:23:47,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-12 00:23:47,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:23:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-12 00:23:47,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:23:47,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-09-12 00:23:47,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2125236582] [2020-09-12 00:23:47,797 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:23:47,810 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:23:47,843 INFO L274 McrAutomatonBuilder]: Finished intersection with 84 states and 122 transitions. [2020-09-12 00:23:47,843 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:23:48,375 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 8 new interpolants: [6320#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 13 thread_function_dataraceThread1of1ForFork0_~i~0)), 6313#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 7) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 6314#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 6) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 6315#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 5) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 6316#(or (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 4)), 6317#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 6318#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 2) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0)), 6319#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 14 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-12 00:23:48,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-12 00:23:48,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:23:48,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-12 00:23:48,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2020-09-12 00:23:48,376 INFO L87 Difference]: Start difference. First operand 441 states and 878 transitions. Second operand 20 states. [2020-09-12 00:23:48,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:23:48,505 INFO L93 Difference]: Finished difference Result 510 states and 1016 transitions. [2020-09-12 00:23:48,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-12 00:23:48,505 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 44 [2020-09-12 00:23:48,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:23:48,509 INFO L225 Difference]: With dead ends: 510 [2020-09-12 00:23:48,510 INFO L226 Difference]: Without dead ends: 510 [2020-09-12 00:23:48,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 100 SyntacticMatches, 14 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-09-12 00:23:48,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-09-12 00:23:48,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 487. [2020-09-12 00:23:48,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-09-12 00:23:48,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 970 transitions. [2020-09-12 00:23:48,527 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 970 transitions. Word has length 44 [2020-09-12 00:23:48,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:23:48,527 INFO L479 AbstractCegarLoop]: Abstraction has 487 states and 970 transitions. [2020-09-12 00:23:48,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-12 00:23:48,528 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 970 transitions. [2020-09-12 00:23:48,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-12 00:23:48,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:23:48,531 INFO L422 BasicCegarLoop]: trace histogram [20, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:23:48,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:48,744 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:23:48,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:23:48,745 INFO L82 PathProgramCache]: Analyzing trace with hash 212457791, now seen corresponding path program 9 times [2020-09-12 00:23:48,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:23:48,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651058410] [2020-09-12 00:23:48,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:23:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:23:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-12 00:23:48,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651058410] [2020-09-12 00:23:48,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880151789] [2020-09-12 00:23:48,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:49,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-09-12 00:23:49,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-12 00:23:49,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-12 00:23:49,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:23:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-12 00:23:49,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:23:49,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-09-12 00:23:49,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [139080006] [2020-09-12 00:23:49,088 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:23:49,097 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:23:49,118 INFO L274 McrAutomatonBuilder]: Finished intersection with 88 states and 128 transitions. [2020-09-12 00:23:49,118 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:23:49,732 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [7955#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 8) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 7956#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 7) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 7957#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 6) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 7958#(or (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 5)), 7959#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 4) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 7960#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0)), 7961#(or (<= 14 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 2)), 7962#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 13 thread_function_dataraceThread1of1ForFork0_~i~0)), 7963#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 12 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-12 00:23:49,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-12 00:23:49,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:23:49,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-12 00:23:49,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2020-09-12 00:23:49,733 INFO L87 Difference]: Start difference. First operand 487 states and 970 transitions. Second operand 22 states. [2020-09-12 00:23:49,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:23:49,882 INFO L93 Difference]: Finished difference Result 556 states and 1108 transitions. [2020-09-12 00:23:49,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-12 00:23:49,882 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 46 [2020-09-12 00:23:49,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:23:49,887 INFO L225 Difference]: With dead ends: 556 [2020-09-12 00:23:49,887 INFO L226 Difference]: Without dead ends: 556 [2020-09-12 00:23:49,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 103 SyntacticMatches, 16 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2020-09-12 00:23:49,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-09-12 00:23:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 533. [2020-09-12 00:23:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-09-12 00:23:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 1062 transitions. [2020-09-12 00:23:49,900 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 1062 transitions. Word has length 46 [2020-09-12 00:23:49,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:23:49,900 INFO L479 AbstractCegarLoop]: Abstraction has 533 states and 1062 transitions. [2020-09-12 00:23:49,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-12 00:23:49,901 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 1062 transitions. [2020-09-12 00:23:49,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-12 00:23:49,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:23:49,903 INFO L422 BasicCegarLoop]: trace histogram [20, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:23:50,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:50,118 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:23:50,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:23:50,119 INFO L82 PathProgramCache]: Analyzing trace with hash 159684978, now seen corresponding path program 10 times [2020-09-12 00:23:50,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:23:50,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040637943] [2020-09-12 00:23:50,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:23:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:23:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-12 00:23:50,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040637943] [2020-09-12 00:23:50,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030359703] [2020-09-12 00:23:50,350 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:50,441 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-12 00:23:50,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-12 00:23:50,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 12 conjunts are in the unsatisfiable core [2020-09-12 00:23:50,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:23:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-12 00:23:50,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:23:50,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-09-12 00:23:50,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1024325035] [2020-09-12 00:23:50,472 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:23:50,482 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:23:50,520 INFO L274 McrAutomatonBuilder]: Finished intersection with 92 states and 134 transitions. [2020-09-12 00:23:50,521 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:23:51,183 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 10 new interpolants: [9744#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 8) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 9745#(or (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 7)), 9746#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 6) (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0)), 9747#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 5) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 9748#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 4) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0)), 9749#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 14 thread_function_dataraceThread1of1ForFork0_~i~0)), 9750#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 2) (<= 13 thread_function_dataraceThread1of1ForFork0_~i~0)), 9751#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 12 thread_function_dataraceThread1of1ForFork0_~i~0)), 9752#(or (<= 11 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 0)), 9743#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 9) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-12 00:23:51,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-12 00:23:51,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:23:51,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-12 00:23:51,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2020-09-12 00:23:51,184 INFO L87 Difference]: Start difference. First operand 533 states and 1062 transitions. Second operand 24 states. [2020-09-12 00:23:51,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:23:51,299 INFO L93 Difference]: Finished difference Result 602 states and 1200 transitions. [2020-09-12 00:23:51,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-12 00:23:51,299 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 48 [2020-09-12 00:23:51,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:23:51,302 INFO L225 Difference]: With dead ends: 602 [2020-09-12 00:23:51,302 INFO L226 Difference]: Without dead ends: 602 [2020-09-12 00:23:51,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 106 SyntacticMatches, 18 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2020-09-12 00:23:51,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-09-12 00:23:51,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 579. [2020-09-12 00:23:51,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-09-12 00:23:51,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 1154 transitions. [2020-09-12 00:23:51,327 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 1154 transitions. Word has length 48 [2020-09-12 00:23:51,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:23:51,327 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 1154 transitions. [2020-09-12 00:23:51,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-12 00:23:51,327 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 1154 transitions. [2020-09-12 00:23:51,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-12 00:23:51,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:23:51,329 INFO L422 BasicCegarLoop]: trace histogram [20, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:23:51,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-09-12 00:23:51,548 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:23:51,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:23:51,548 INFO L82 PathProgramCache]: Analyzing trace with hash 984619237, now seen corresponding path program 11 times [2020-09-12 00:23:51,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:23:51,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357212277] [2020-09-12 00:23:51,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:23:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:23:51,783 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-12 00:23:51,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357212277] [2020-09-12 00:23:51,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605306248] [2020-09-12 00:23:51,784 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-12 00:23:51,905 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-09-12 00:23:51,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-12 00:23:51,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 44 conjunts are in the unsatisfiable core [2020-09-12 00:23:51,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-12 00:23:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:23:53,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-12 00:23:53,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 43] total 57 [2020-09-12 00:23:53,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [202541217] [2020-09-12 00:23:53,446 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:23:53,456 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:23:53,478 INFO L274 McrAutomatonBuilder]: Finished intersection with 96 states and 140 transitions. [2020-09-12 00:23:53,478 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:23:54,885 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 11 new interpolants: [11728#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 11 thread_function_dataraceThread1of1ForFork0_~i~0)), 11729#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 10 thread_function_dataraceThread1of1ForFork0_~i~0)), 11719#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 10) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 11720#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 9) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 11721#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 8) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 11722#(or (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 7)), 11723#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 6) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 11724#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 5) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0)), 11725#(or (<= 14 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 4)), 11726#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 13 thread_function_dataraceThread1of1ForFork0_~i~0)), 11727#(or (<= 12 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 2))] [2020-09-12 00:23:54,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-09-12 00:23:54,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:23:54,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-09-12 00:23:54,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=816, Invalid=3740, Unknown=0, NotChecked=0, Total=4556 [2020-09-12 00:23:54,887 INFO L87 Difference]: Start difference. First operand 579 states and 1154 transitions. Second operand 68 states. Received shutdown request... [2020-09-12 00:27:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1392 states. [2020-09-12 00:27:05,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-09-12 00:27:05,135 WARN L544 AbstractCegarLoop]: Verification canceled [2020-09-12 00:27:05,140 WARN L228 ceAbstractionStarter]: Timeout [2020-09-12 00:27:05,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 12:27:05 BasicIcfg [2020-09-12 00:27:05,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-12 00:27:05,143 INFO L168 Benchmark]: Toolchain (without parser) took 237593.51 ms. Allocated memory was 138.9 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 99.3 MB in the beginning and 682.6 MB in the end (delta: -583.3 MB). Peak memory consumption was 784.5 MB. Max. memory is 7.1 GB. [2020-09-12 00:27:05,144 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-12 00:27:05,144 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1108.57 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 98.6 MB in the beginning and 107.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. [2020-09-12 00:27:05,145 INFO L168 Benchmark]: Boogie Procedure Inliner took 155.14 ms. Allocated memory is still 202.4 MB. Free memory was 107.5 MB in the beginning and 104.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-12 00:27:05,147 INFO L168 Benchmark]: Boogie Preprocessor took 79.25 ms. Allocated memory is still 202.4 MB. Free memory was 104.8 MB in the beginning and 103.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-12 00:27:05,148 INFO L168 Benchmark]: RCFGBuilder took 578.76 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 103.4 MB in the beginning and 194.1 MB in the end (delta: -90.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-09-12 00:27:05,148 INFO L168 Benchmark]: TraceAbstraction took 235660.54 ms. Allocated memory was 234.9 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 194.1 MB in the beginning and 682.6 MB in the end (delta: -488.5 MB). Peak memory consumption was 783.4 MB. Max. memory is 7.1 GB. [2020-09-12 00:27:05,151 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1108.57 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 98.6 MB in the beginning and 107.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 155.14 ms. Allocated memory is still 202.4 MB. Free memory was 107.5 MB in the beginning and 104.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 79.25 ms. Allocated memory is still 202.4 MB. Free memory was 104.8 MB in the beginning and 103.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 578.76 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 103.4 MB in the beginning and 194.1 MB in the end (delta: -90.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235660.54 ms. Allocated memory was 234.9 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 194.1 MB in the beginning and 682.6 MB in the end (delta: -488.5 MB). Peak memory consumption was 783.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 5.8s, 82 ProgramPointsBefore, 15 ProgramPointsAfterwards, 85 TransitionsBefore, 13 TransitionsAfterwards, 640 CoEnabledTransitionPairs, 7 FixpointIterations, 44 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 328 VarBasedMoverChecksPositive, 7 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 510 CheckedPairsTotal, 78 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (579states) and FLOYD_HOARE automaton (currently 1392 states, 68 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 1420 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 235.5s, OverallIterations: 13, TraceHistogramMax: 20, AutomataDifference: 214.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.8s, HoareTripleCheckerStatistics: 175 SDtfs, 3963 SDslu, 2298 SDs, 0 SdLazy, 1218 SolverSat, 6251 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3036 GetRequests, 1012 SyntacticMatches, 90 SemanticMatches, 1933 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184737 ImplicationChecksByTransitivity, 204.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=579occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 165 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 732 NumberOfCodeBlocks, 720 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 707 ConstructedInterpolants, 0 QuantifiedInterpolants, 70023 SizeOfPredicates, 33 NumberOfNonLiveVariables, 2269 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 25 InterpolantComputations, 2 PerfectInterpolantSequences, 2146/3430 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown