/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-ext/45_monabsex1_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:43:18,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:43:18,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:43:18,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:43:18,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:43:18,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:43:18,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:43:18,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:43:18,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:43:18,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:43:18,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:43:18,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:43:18,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:43:18,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:43:18,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:43:18,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:43:18,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:43:18,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:43:18,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:43:18,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:43:18,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:43:18,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:43:18,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:43:18,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:43:18,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:43:18,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:43:18,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:43:18,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:43:18,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:43:18,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:43:18,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:43:18,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:43:18,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:43:18,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:43:18,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:43:18,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:43:18,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:43:18,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:43:18,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:43:18,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:43:18,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:43:18,556 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 [2020-10-16 12:43:18,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:43:18,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:43:18,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:43:18,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:43:18,581 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:43:18,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:43:18,582 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:43:18,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:43:18,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:43:18,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:43:18,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:43:18,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:43:18,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:43:18,583 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:43:18,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:43:18,583 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:43:18,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:43:18,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:43:18,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:43:18,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:43:18,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:43:18,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:43:18,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:43:18,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:43:18,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:43:18,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:43:18,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:43:18,586 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 12:43:18,586 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:43:18,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:43:18,586 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 12:43:18,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:43:18,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:43:18,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:43:18,889 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:43:18,889 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:43:18,890 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2020-10-16 12:43:18,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42f005818/673dfedb7f074d5cbfd5483a4f2ad297/FLAG167d4b933 [2020-10-16 12:43:19,488 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:43:19,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2020-10-16 12:43:19,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42f005818/673dfedb7f074d5cbfd5483a4f2ad297/FLAG167d4b933 [2020-10-16 12:43:19,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42f005818/673dfedb7f074d5cbfd5483a4f2ad297 [2020-10-16 12:43:19,817 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:43:19,819 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:43:19,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:43:19,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:43:19,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:43:19,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:43:19" (1/1) ... [2020-10-16 12:43:19,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39fb0517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:19, skipping insertion in model container [2020-10-16 12:43:19,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:43:19" (1/1) ... [2020-10-16 12:43:19,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:43:19,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:43:20,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:43:20,309 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:43:20,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:43:20,470 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:43:20,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:20 WrapperNode [2020-10-16 12:43:20,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:43:20,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:43:20,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:43:20,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:43:20,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:20" (1/1) ... [2020-10-16 12:43:20,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:20" (1/1) ... [2020-10-16 12:43:20,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:43:20,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:43:20,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:43:20,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:43:20,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:20" (1/1) ... [2020-10-16 12:43:20,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:20" (1/1) ... [2020-10-16 12:43:20,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:20" (1/1) ... [2020-10-16 12:43:20,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:20" (1/1) ... [2020-10-16 12:43:20,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:20" (1/1) ... [2020-10-16 12:43:20,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:20" (1/1) ... [2020-10-16 12:43:20,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:20" (1/1) ... [2020-10-16 12:43:20,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:43:20,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:43:20,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:43:20,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:43:20,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:20" (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 [2020-10-16 12:43:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 12:43:20,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 12:43:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:43:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:43:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:43:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:43:20,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:43:20,616 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:43:20,869 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:43:20,869 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-16 12:43:20,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:43:20 BoogieIcfgContainer [2020-10-16 12:43:20,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:43:20,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:43:20,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:43:20,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:43:20,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:43:19" (1/3) ... [2020-10-16 12:43:20,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656355f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:43:20, skipping insertion in model container [2020-10-16 12:43:20,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:43:20" (2/3) ... [2020-10-16 12:43:20,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656355f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:43:20, skipping insertion in model container [2020-10-16 12:43:20,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:43:20" (3/3) ... [2020-10-16 12:43:20,881 INFO L111 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2020-10-16 12:43:20,893 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:43:20,894 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:43:20,903 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:43:20,904 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:43:20,929 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,929 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,930 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,930 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,931 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,931 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,932 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,933 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,933 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,933 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,934 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,939 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,939 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,940 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:20,946 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:43:20,962 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 12:43:20,985 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:43:20,986 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:43:20,986 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:43:20,986 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:43:20,986 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:43:20,987 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:43:20,987 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:43:20,987 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:43:21,000 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:43:21,001 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 33 transitions, 71 flow [2020-10-16 12:43:21,004 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 33 transitions, 71 flow [2020-10-16 12:43:21,006 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 34 places, 33 transitions, 71 flow [2020-10-16 12:43:21,046 INFO L129 PetriNetUnfolder]: 3/41 cut-off events. [2020-10-16 12:43:21,046 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:43:21,051 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 41 events. 3/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2020-10-16 12:43:21,053 INFO L117 LiptonReduction]: Number of co-enabled transitions 240 [2020-10-16 12:43:21,636 INFO L132 LiptonReduction]: Checked pairs total: 209 [2020-10-16 12:43:21,636 INFO L134 LiptonReduction]: Total number of compositions: 32 [2020-10-16 12:43:21,643 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2020-10-16 12:43:21,653 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2020-10-16 12:43:21,655 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-16 12:43:21,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 12:43:21,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:21,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 12:43:21,663 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:43:21,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:21,669 INFO L82 PathProgramCache]: Analyzing trace with hash 4687883, now seen corresponding path program 1 times [2020-10-16 12:43:21,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:21,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082499556] [2020-10-16 12:43:21,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:43:21,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082499556] [2020-10-16 12:43:21,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:21,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:43:21,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1808806500] [2020-10-16 12:43:21,875 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:21,879 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:21,894 INFO L258 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-16 12:43:21,894 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:21,899 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:21,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 12:43:21,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:21,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 12:43:21,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 12:43:21,919 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-16 12:43:21,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:21,923 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-10-16 12:43:21,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 12:43:21,925 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-16 12:43:21,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:21,934 INFO L225 Difference]: With dead ends: 11 [2020-10-16 12:43:21,935 INFO L226 Difference]: Without dead ends: 11 [2020-10-16 12:43:21,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 12:43:21,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-16 12:43:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-16 12:43:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-16 12:43:21,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-10-16 12:43:21,973 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2020-10-16 12:43:21,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:21,974 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-16 12:43:21,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 12:43:21,974 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-10-16 12:43:21,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 12:43:21,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:21,975 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-16 12:43:21,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:43:21,976 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:43:21,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:21,976 INFO L82 PathProgramCache]: Analyzing trace with hash 210024220, now seen corresponding path program 1 times [2020-10-16 12:43:21,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:21,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437409740] [2020-10-16 12:43:21,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:22,010 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:22,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:22,047 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:43:22,047 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:43:22,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:43:22,050 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:43:22,051 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 12:43:22,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,059 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,059 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,060 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,060 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,060 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,060 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,061 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,061 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,061 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,063 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,063 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,063 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,064 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,064 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,064 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,064 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,065 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,065 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,065 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,066 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,066 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,066 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,066 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,066 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,075 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,075 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:22,079 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:43:22,080 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 12:43:22,080 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:43:22,080 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:43:22,080 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:43:22,081 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:43:22,081 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:43:22,081 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:43:22,082 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:43:22,082 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:43:22,085 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:43:22,085 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 46 transitions, 104 flow [2020-10-16 12:43:22,086 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 46 transitions, 104 flow [2020-10-16 12:43:22,086 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 104 flow [2020-10-16 12:43:22,117 INFO L129 PetriNetUnfolder]: 5/63 cut-off events. [2020-10-16 12:43:22,118 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 12:43:22,121 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 63 events. 5/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 42. Up to 6 conditions per place. [2020-10-16 12:43:22,124 INFO L117 LiptonReduction]: Number of co-enabled transitions 792 [2020-10-16 12:43:22,675 INFO L132 LiptonReduction]: Checked pairs total: 1268 [2020-10-16 12:43:22,676 INFO L134 LiptonReduction]: Total number of compositions: 40 [2020-10-16 12:43:22,676 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 13 transitions, 38 flow [2020-10-16 12:43:22,684 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 100 states. [2020-10-16 12:43:22,684 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2020-10-16 12:43:22,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-16 12:43:22,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:22,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 12:43:22,685 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:22,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:22,686 INFO L82 PathProgramCache]: Analyzing trace with hash 240626158, now seen corresponding path program 1 times [2020-10-16 12:43:22,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:22,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737796056] [2020-10-16 12:43:22,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:43:22,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737796056] [2020-10-16 12:43:22,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:22,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:22,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1589755617] [2020-10-16 12:43:22,766 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:22,767 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:22,768 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-16 12:43:22,768 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:22,769 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:22,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:22,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:22,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:22,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:22,772 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 3 states. [2020-10-16 12:43:22,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:22,813 INFO L93 Difference]: Finished difference Result 96 states and 197 transitions. [2020-10-16 12:43:22,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:22,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-16 12:43:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:22,823 INFO L225 Difference]: With dead ends: 96 [2020-10-16 12:43:22,824 INFO L226 Difference]: Without dead ends: 96 [2020-10-16 12:43:22,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:22,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-16 12:43:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 84. [2020-10-16 12:43:22,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-16 12:43:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 180 transitions. [2020-10-16 12:43:22,882 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 180 transitions. Word has length 5 [2020-10-16 12:43:22,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:22,882 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 180 transitions. [2020-10-16 12:43:22,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:22,882 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 180 transitions. [2020-10-16 12:43:22,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:43:22,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:22,883 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:22,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:43:22,885 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:22,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:22,885 INFO L82 PathProgramCache]: Analyzing trace with hash 109807895, now seen corresponding path program 1 times [2020-10-16 12:43:22,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:22,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536824487] [2020-10-16 12:43:22,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:22,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:43:22,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536824487] [2020-10-16 12:43:22,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:22,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:22,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [115088333] [2020-10-16 12:43:22,935 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:22,936 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:22,938 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 12:43:22,938 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:22,938 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:22,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:22,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:22,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:22,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:22,940 INFO L87 Difference]: Start difference. First operand 84 states and 180 transitions. Second operand 3 states. [2020-10-16 12:43:22,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:22,958 INFO L93 Difference]: Finished difference Result 84 states and 164 transitions. [2020-10-16 12:43:22,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:22,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 12:43:22,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:22,960 INFO L225 Difference]: With dead ends: 84 [2020-10-16 12:43:22,961 INFO L226 Difference]: Without dead ends: 84 [2020-10-16 12:43:22,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:22,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-16 12:43:22,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-10-16 12:43:22,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-16 12:43:22,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 154 transitions. [2020-10-16 12:43:22,971 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 154 transitions. Word has length 8 [2020-10-16 12:43:22,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:22,971 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 154 transitions. [2020-10-16 12:43:22,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:22,972 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 154 transitions. [2020-10-16 12:43:22,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:43:22,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:22,973 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:22,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:43:22,973 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:22,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:22,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1655579211, now seen corresponding path program 1 times [2020-10-16 12:43:22,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:22,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462563798] [2020-10-16 12:43:22,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:43:23,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462563798] [2020-10-16 12:43:23,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:23,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:23,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [334092093] [2020-10-16 12:43:23,019 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:23,020 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:23,021 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-16 12:43:23,022 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:23,038 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:23,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:23,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:23,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:23,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:23,040 INFO L87 Difference]: Start difference. First operand 76 states and 154 transitions. Second operand 4 states. [2020-10-16 12:43:23,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:23,066 INFO L93 Difference]: Finished difference Result 68 states and 136 transitions. [2020-10-16 12:43:23,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:23,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 12:43:23,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:23,068 INFO L225 Difference]: With dead ends: 68 [2020-10-16 12:43:23,068 INFO L226 Difference]: Without dead ends: 68 [2020-10-16 12:43:23,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:23,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-16 12:43:23,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2020-10-16 12:43:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-16 12:43:23,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 129 transitions. [2020-10-16 12:43:23,076 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 129 transitions. Word has length 9 [2020-10-16 12:43:23,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:23,076 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 129 transitions. [2020-10-16 12:43:23,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:23,077 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 129 transitions. [2020-10-16 12:43:23,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:43:23,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:23,078 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-10-16 12:43:23,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:43:23,078 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:23,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:23,079 INFO L82 PathProgramCache]: Analyzing trace with hash -891005170, now seen corresponding path program 1 times [2020-10-16 12:43:23,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:23,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61470439] [2020-10-16 12:43:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:23,094 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:23,102 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:23,107 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:43:23,107 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:43:23,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:43:23,108 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:43:23,109 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 12:43:23,116 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,116 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,116 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,116 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,117 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,117 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,117 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,117 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,117 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,118 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,118 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,118 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,118 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,118 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,119 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,119 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,119 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,119 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,120 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,120 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,120 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,121 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,121 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,122 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,122 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,122 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,123 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,123 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,123 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,124 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,124 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,124 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,124 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,125 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,125 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,125 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,125 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,126 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,126 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,127 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,128 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,128 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,128 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,128 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,129 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,130 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,130 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,131 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,131 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,131 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,131 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:23,133 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:43:23,133 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 12:43:23,133 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:43:23,133 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:43:23,134 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:43:23,134 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:43:23,134 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:43:23,134 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:43:23,134 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:43:23,134 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:43:23,136 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:43:23,136 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 59 transitions, 139 flow [2020-10-16 12:43:23,136 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 59 transitions, 139 flow [2020-10-16 12:43:23,136 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 59 transitions, 139 flow [2020-10-16 12:43:23,154 INFO L129 PetriNetUnfolder]: 7/85 cut-off events. [2020-10-16 12:43:23,154 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 12:43:23,155 INFO L80 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 85 events. 7/85 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-10-16 12:43:23,158 INFO L117 LiptonReduction]: Number of co-enabled transitions 1656 [2020-10-16 12:43:23,693 INFO L132 LiptonReduction]: Checked pairs total: 2526 [2020-10-16 12:43:23,693 INFO L134 LiptonReduction]: Total number of compositions: 52 [2020-10-16 12:43:23,694 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 17 transitions, 55 flow [2020-10-16 12:43:23,719 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 404 states. [2020-10-16 12:43:23,720 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states. [2020-10-16 12:43:23,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-16 12:43:23,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:23,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 12:43:23,721 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:23,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:23,721 INFO L82 PathProgramCache]: Analyzing trace with hash 359632331, now seen corresponding path program 1 times [2020-10-16 12:43:23,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:23,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665681484] [2020-10-16 12:43:23,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:23,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:43:23,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665681484] [2020-10-16 12:43:23,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:23,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:23,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1529430707] [2020-10-16 12:43:23,751 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:23,752 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:23,752 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-16 12:43:23,752 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:23,753 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:23,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:23,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:23,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:23,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:23,754 INFO L87 Difference]: Start difference. First operand 404 states. Second operand 3 states. [2020-10-16 12:43:23,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:23,788 INFO L93 Difference]: Finished difference Result 447 states and 1247 transitions. [2020-10-16 12:43:23,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:23,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-16 12:43:23,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:23,793 INFO L225 Difference]: With dead ends: 447 [2020-10-16 12:43:23,794 INFO L226 Difference]: Without dead ends: 447 [2020-10-16 12:43:23,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:23,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-10-16 12:43:23,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 378. [2020-10-16 12:43:23,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-10-16 12:43:23,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1099 transitions. [2020-10-16 12:43:23,827 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1099 transitions. Word has length 5 [2020-10-16 12:43:23,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:23,828 INFO L481 AbstractCegarLoop]: Abstraction has 378 states and 1099 transitions. [2020-10-16 12:43:23,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:23,828 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1099 transitions. [2020-10-16 12:43:23,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:43:23,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:23,829 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:23,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:43:23,829 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:23,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:23,830 INFO L82 PathProgramCache]: Analyzing trace with hash 2061810264, now seen corresponding path program 1 times [2020-10-16 12:43:23,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:23,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822386725] [2020-10-16 12:43:23,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:43:23,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822386725] [2020-10-16 12:43:23,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:23,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:23,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [190195272] [2020-10-16 12:43:23,854 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:23,854 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:23,855 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 12:43:23,855 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:23,856 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:23,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:23,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:23,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:23,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:23,857 INFO L87 Difference]: Start difference. First operand 378 states and 1099 transitions. Second operand 3 states. [2020-10-16 12:43:23,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:23,885 INFO L93 Difference]: Finished difference Result 486 states and 1356 transitions. [2020-10-16 12:43:23,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:23,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 12:43:23,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:23,890 INFO L225 Difference]: With dead ends: 486 [2020-10-16 12:43:23,890 INFO L226 Difference]: Without dead ends: 486 [2020-10-16 12:43:23,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-10-16 12:43:23,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 412. [2020-10-16 12:43:23,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-16 12:43:23,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1196 transitions. [2020-10-16 12:43:23,916 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1196 transitions. Word has length 8 [2020-10-16 12:43:23,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:23,917 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 1196 transitions. [2020-10-16 12:43:23,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:23,917 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1196 transitions. [2020-10-16 12:43:23,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:43:23,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:23,918 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:23,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:43:23,918 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:23,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:23,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1871610837, now seen corresponding path program 1 times [2020-10-16 12:43:23,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:23,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360759491] [2020-10-16 12:43:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:43:23,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360759491] [2020-10-16 12:43:23,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:23,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:23,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [422809873] [2020-10-16 12:43:23,948 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:23,949 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:23,950 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-16 12:43:23,950 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:23,956 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:23,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:23,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:23,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:23,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:23,957 INFO L87 Difference]: Start difference. First operand 412 states and 1196 transitions. Second operand 4 states. [2020-10-16 12:43:23,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:23,987 INFO L93 Difference]: Finished difference Result 338 states and 962 transitions. [2020-10-16 12:43:23,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:23,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 12:43:23,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:23,996 INFO L225 Difference]: With dead ends: 338 [2020-10-16 12:43:23,996 INFO L226 Difference]: Without dead ends: 338 [2020-10-16 12:43:23,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:23,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-16 12:43:24,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 283. [2020-10-16 12:43:24,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-10-16 12:43:24,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 793 transitions. [2020-10-16 12:43:24,009 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 793 transitions. Word has length 9 [2020-10-16 12:43:24,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:24,009 INFO L481 AbstractCegarLoop]: Abstraction has 283 states and 793 transitions. [2020-10-16 12:43:24,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:24,010 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 793 transitions. [2020-10-16 12:43:24,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:43:24,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:24,010 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:24,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 12:43:24,011 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:24,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:24,011 INFO L82 PathProgramCache]: Analyzing trace with hash -508390409, now seen corresponding path program 1 times [2020-10-16 12:43:24,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:24,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274360210] [2020-10-16 12:43:24,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:43:24,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274360210] [2020-10-16 12:43:24,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:24,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:24,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [76275153] [2020-10-16 12:43:24,040 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:24,041 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:24,042 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-16 12:43:24,042 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:24,043 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:24,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:24,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:24,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:24,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:24,044 INFO L87 Difference]: Start difference. First operand 283 states and 793 transitions. Second operand 4 states. [2020-10-16 12:43:24,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:24,081 INFO L93 Difference]: Finished difference Result 233 states and 641 transitions. [2020-10-16 12:43:24,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:24,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 12:43:24,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:24,084 INFO L225 Difference]: With dead ends: 233 [2020-10-16 12:43:24,084 INFO L226 Difference]: Without dead ends: 233 [2020-10-16 12:43:24,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:24,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-16 12:43:24,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 183. [2020-10-16 12:43:24,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-16 12:43:24,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 489 transitions. [2020-10-16 12:43:24,094 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 489 transitions. Word has length 9 [2020-10-16 12:43:24,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:24,095 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 489 transitions. [2020-10-16 12:43:24,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:24,095 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 489 transitions. [2020-10-16 12:43:24,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:43:24,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:24,096 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:24,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 12:43:24,097 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:24,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:24,097 INFO L82 PathProgramCache]: Analyzing trace with hash 960774069, now seen corresponding path program 1 times [2020-10-16 12:43:24,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:24,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908555605] [2020-10-16 12:43:24,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 12:43:24,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908555605] [2020-10-16 12:43:24,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:24,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:24,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1292777897] [2020-10-16 12:43:24,122 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:24,123 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:24,124 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-16 12:43:24,124 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:24,124 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:24,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:24,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:24,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:24,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:24,126 INFO L87 Difference]: Start difference. First operand 183 states and 489 transitions. Second operand 3 states. [2020-10-16 12:43:24,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:24,150 INFO L93 Difference]: Finished difference Result 243 states and 634 transitions. [2020-10-16 12:43:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:24,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 12:43:24,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:24,152 INFO L225 Difference]: With dead ends: 243 [2020-10-16 12:43:24,152 INFO L226 Difference]: Without dead ends: 243 [2020-10-16 12:43:24,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:24,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-16 12:43:24,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 211. [2020-10-16 12:43:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-16 12:43:24,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 570 transitions. [2020-10-16 12:43:24,162 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 570 transitions. Word has length 11 [2020-10-16 12:43:24,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:24,163 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 570 transitions. [2020-10-16 12:43:24,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:24,163 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 570 transitions. [2020-10-16 12:43:24,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:43:24,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:24,165 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:24,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 12:43:24,165 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:24,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:24,165 INFO L82 PathProgramCache]: Analyzing trace with hash -280773966, now seen corresponding path program 1 times [2020-10-16 12:43:24,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:24,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702306887] [2020-10-16 12:43:24,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:24,194 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 12:43:24,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702306887] [2020-10-16 12:43:24,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:24,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:24,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [901993040] [2020-10-16 12:43:24,195 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:24,196 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:24,198 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-16 12:43:24,198 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:24,199 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:24,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:24,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:24,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:24,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:24,200 INFO L87 Difference]: Start difference. First operand 211 states and 570 transitions. Second operand 4 states. [2020-10-16 12:43:24,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:24,222 INFO L93 Difference]: Finished difference Result 179 states and 474 transitions. [2020-10-16 12:43:24,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:24,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 12:43:24,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:24,224 INFO L225 Difference]: With dead ends: 179 [2020-10-16 12:43:24,224 INFO L226 Difference]: Without dead ends: 179 [2020-10-16 12:43:24,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:24,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-16 12:43:24,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 147. [2020-10-16 12:43:24,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-16 12:43:24,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 378 transitions. [2020-10-16 12:43:24,231 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 378 transitions. Word has length 12 [2020-10-16 12:43:24,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:24,231 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 378 transitions. [2020-10-16 12:43:24,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:24,231 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 378 transitions. [2020-10-16 12:43:24,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:43:24,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:24,232 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-10-16 12:43:24,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 12:43:24,233 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:24,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:24,233 INFO L82 PathProgramCache]: Analyzing trace with hash -280874677, now seen corresponding path program 1 times [2020-10-16 12:43:24,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:24,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20826441] [2020-10-16 12:43:24,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:24,244 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:24,250 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:24,255 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:43:24,256 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:43:24,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 12:43:24,257 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:43:24,257 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 12:43:24,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,265 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,265 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,265 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,266 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,266 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,267 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,267 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,268 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,268 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,269 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,269 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,269 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,269 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,269 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,269 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,270 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,270 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,270 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,270 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,270 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,270 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,271 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,271 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,271 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,271 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,271 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,272 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,272 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,272 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,272 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,272 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,272 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,273 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,273 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,273 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,273 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,273 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,273 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,274 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,274 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,274 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,275 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,275 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,275 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,275 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,275 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,280 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,281 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,281 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,281 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,286 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,286 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,286 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,286 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,286 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,287 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:24,288 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:43:24,288 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 12:43:24,288 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:43:24,288 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:43:24,289 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:43:24,289 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:43:24,289 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:43:24,289 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:43:24,289 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:43:24,289 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:43:24,291 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:43:24,291 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 72 transitions, 176 flow [2020-10-16 12:43:24,291 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 72 transitions, 176 flow [2020-10-16 12:43:24,291 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 72 transitions, 176 flow [2020-10-16 12:43:24,310 INFO L129 PetriNetUnfolder]: 9/107 cut-off events. [2020-10-16 12:43:24,310 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 12:43:24,312 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 107 events. 9/107 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 289 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 93. Up to 10 conditions per place. [2020-10-16 12:43:24,315 INFO L117 LiptonReduction]: Number of co-enabled transitions 2832 [2020-10-16 12:43:25,072 INFO L132 LiptonReduction]: Checked pairs total: 5340 [2020-10-16 12:43:25,072 INFO L134 LiptonReduction]: Total number of compositions: 66 [2020-10-16 12:43:25,073 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 23 transitions, 78 flow [2020-10-16 12:43:25,160 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1620 states. [2020-10-16 12:43:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states. [2020-10-16 12:43:25,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-16 12:43:25,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:25,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 12:43:25,165 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:43:25,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:25,165 INFO L82 PathProgramCache]: Analyzing trace with hash 500888133, now seen corresponding path program 1 times [2020-10-16 12:43:25,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:25,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014502302] [2020-10-16 12:43:25,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:25,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:43:25,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014502302] [2020-10-16 12:43:25,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:25,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:25,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1927745268] [2020-10-16 12:43:25,193 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:25,193 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:25,194 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-16 12:43:25,194 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:25,194 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:25,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:25,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:25,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:25,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:25,195 INFO L87 Difference]: Start difference. First operand 1620 states. Second operand 3 states. [2020-10-16 12:43:25,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:25,250 INFO L93 Difference]: Finished difference Result 1878 states and 6626 transitions. [2020-10-16 12:43:25,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:25,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-16 12:43:25,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:25,268 INFO L225 Difference]: With dead ends: 1878 [2020-10-16 12:43:25,268 INFO L226 Difference]: Without dead ends: 1878 [2020-10-16 12:43:25,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:25,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2020-10-16 12:43:25,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1572. [2020-10-16 12:43:25,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-10-16 12:43:25,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 5747 transitions. [2020-10-16 12:43:25,375 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 5747 transitions. Word has length 5 [2020-10-16 12:43:25,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:25,376 INFO L481 AbstractCegarLoop]: Abstraction has 1572 states and 5747 transitions. [2020-10-16 12:43:25,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:25,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 5747 transitions. [2020-10-16 12:43:25,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:43:25,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:25,377 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:25,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 12:43:25,377 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:43:25,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:25,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1111452433, now seen corresponding path program 1 times [2020-10-16 12:43:25,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:25,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953319545] [2020-10-16 12:43:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:43:25,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953319545] [2020-10-16 12:43:25,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:25,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:25,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [619923417] [2020-10-16 12:43:25,396 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:25,397 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:25,398 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 12:43:25,398 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:25,398 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:25,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:25,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:25,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:25,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:25,400 INFO L87 Difference]: Start difference. First operand 1572 states and 5747 transitions. Second operand 3 states. [2020-10-16 12:43:25,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:25,505 INFO L93 Difference]: Finished difference Result 2193 states and 7798 transitions. [2020-10-16 12:43:25,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:25,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 12:43:25,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:25,525 INFO L225 Difference]: With dead ends: 2193 [2020-10-16 12:43:25,525 INFO L226 Difference]: Without dead ends: 2193 [2020-10-16 12:43:25,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:25,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2020-10-16 12:43:25,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1828. [2020-10-16 12:43:25,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1828 states. [2020-10-16 12:43:25,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 6732 transitions. [2020-10-16 12:43:25,638 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 6732 transitions. Word has length 8 [2020-10-16 12:43:25,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:25,638 INFO L481 AbstractCegarLoop]: Abstraction has 1828 states and 6732 transitions. [2020-10-16 12:43:25,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:25,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 6732 transitions. [2020-10-16 12:43:25,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:43:25,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:25,639 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:25,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 12:43:25,640 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:43:25,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:25,640 INFO L82 PathProgramCache]: Analyzing trace with hash -231363678, now seen corresponding path program 1 times [2020-10-16 12:43:25,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:25,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523349116] [2020-10-16 12:43:25,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:25,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:43:25,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523349116] [2020-10-16 12:43:25,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:25,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:25,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1319192850] [2020-10-16 12:43:25,682 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:25,683 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:25,684 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-16 12:43:25,685 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:25,690 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:25,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:25,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:25,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:25,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:25,691 INFO L87 Difference]: Start difference. First operand 1828 states and 6732 transitions. Second operand 4 states. [2020-10-16 12:43:25,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:25,735 INFO L93 Difference]: Finished difference Result 1463 states and 5301 transitions. [2020-10-16 12:43:25,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:25,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 12:43:25,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:25,748 INFO L225 Difference]: With dead ends: 1463 [2020-10-16 12:43:25,748 INFO L226 Difference]: Without dead ends: 1463 [2020-10-16 12:43:25,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:25,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2020-10-16 12:43:25,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1177. [2020-10-16 12:43:25,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-10-16 12:43:25,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 4196 transitions. [2020-10-16 12:43:25,804 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 4196 transitions. Word has length 9 [2020-10-16 12:43:25,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:25,805 INFO L481 AbstractCegarLoop]: Abstraction has 1177 states and 4196 transitions. [2020-10-16 12:43:25,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:25,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 4196 transitions. [2020-10-16 12:43:25,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:43:25,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:25,805 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:25,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 12:43:25,806 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:43:25,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:25,806 INFO L82 PathProgramCache]: Analyzing trace with hash 95288963, now seen corresponding path program 1 times [2020-10-16 12:43:25,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:25,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648027769] [2020-10-16 12:43:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:43:25,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648027769] [2020-10-16 12:43:25,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:25,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:25,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2146991154] [2020-10-16 12:43:25,833 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:25,834 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:25,835 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-16 12:43:25,835 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:25,835 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:25,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:25,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:25,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:25,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:25,836 INFO L87 Difference]: Start difference. First operand 1177 states and 4196 transitions. Second operand 4 states. [2020-10-16 12:43:25,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:25,872 INFO L93 Difference]: Finished difference Result 950 states and 3337 transitions. [2020-10-16 12:43:25,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:25,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 12:43:25,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:25,881 INFO L225 Difference]: With dead ends: 950 [2020-10-16 12:43:25,881 INFO L226 Difference]: Without dead ends: 950 [2020-10-16 12:43:25,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:25,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-10-16 12:43:25,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 723. [2020-10-16 12:43:25,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-10-16 12:43:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 2478 transitions. [2020-10-16 12:43:25,913 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 2478 transitions. Word has length 9 [2020-10-16 12:43:25,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:25,913 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 2478 transitions. [2020-10-16 12:43:25,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:25,913 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 2478 transitions. [2020-10-16 12:43:25,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:43:25,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:25,914 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:25,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 12:43:25,914 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:43:25,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:25,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1255400151, now seen corresponding path program 1 times [2020-10-16 12:43:25,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:25,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572188966] [2020-10-16 12:43:25,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 12:43:25,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572188966] [2020-10-16 12:43:25,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:25,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:25,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [37640577] [2020-10-16 12:43:25,931 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:25,932 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:25,933 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-16 12:43:25,933 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:25,933 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:25,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:25,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:25,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:25,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:25,934 INFO L87 Difference]: Start difference. First operand 723 states and 2478 transitions. Second operand 3 states. [2020-10-16 12:43:25,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:25,964 INFO L93 Difference]: Finished difference Result 1044 states and 3505 transitions. [2020-10-16 12:43:25,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:25,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 12:43:25,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:25,973 INFO L225 Difference]: With dead ends: 1044 [2020-10-16 12:43:25,973 INFO L226 Difference]: Without dead ends: 1044 [2020-10-16 12:43:25,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:25,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2020-10-16 12:43:26,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 880. [2020-10-16 12:43:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-10-16 12:43:26,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 3058 transitions. [2020-10-16 12:43:26,010 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 3058 transitions. Word has length 11 [2020-10-16 12:43:26,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:26,010 INFO L481 AbstractCegarLoop]: Abstraction has 880 states and 3058 transitions. [2020-10-16 12:43:26,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:26,011 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 3058 transitions. [2020-10-16 12:43:26,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:43:26,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:26,011 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:26,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-16 12:43:26,012 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:43:26,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:26,012 INFO L82 PathProgramCache]: Analyzing trace with hash 262700715, now seen corresponding path program 1 times [2020-10-16 12:43:26,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:26,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943349386] [2020-10-16 12:43:26,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 12:43:26,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943349386] [2020-10-16 12:43:26,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:26,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:26,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [901680557] [2020-10-16 12:43:26,034 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:26,035 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:26,037 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-16 12:43:26,037 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:26,037 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:26,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:26,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:26,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:26,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:26,038 INFO L87 Difference]: Start difference. First operand 880 states and 3058 transitions. Second operand 4 states. [2020-10-16 12:43:26,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:26,071 INFO L93 Difference]: Finished difference Result 716 states and 2447 transitions. [2020-10-16 12:43:26,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:26,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 12:43:26,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:26,077 INFO L225 Difference]: With dead ends: 716 [2020-10-16 12:43:26,077 INFO L226 Difference]: Without dead ends: 716 [2020-10-16 12:43:26,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:26,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-16 12:43:26,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 552. [2020-10-16 12:43:26,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-10-16 12:43:26,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1836 transitions. [2020-10-16 12:43:26,099 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1836 transitions. Word has length 12 [2020-10-16 12:43:26,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:26,100 INFO L481 AbstractCegarLoop]: Abstraction has 552 states and 1836 transitions. [2020-10-16 12:43:26,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:26,100 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1836 transitions. [2020-10-16 12:43:26,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:43:26,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:26,101 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:26,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 12:43:26,101 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:43:26,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:26,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1066051238, now seen corresponding path program 1 times [2020-10-16 12:43:26,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:26,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337979195] [2020-10-16 12:43:26,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 12:43:26,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337979195] [2020-10-16 12:43:26,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:26,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:26,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1801698738] [2020-10-16 12:43:26,121 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:26,122 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:26,124 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2020-10-16 12:43:26,124 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:26,124 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:26,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:26,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:26,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:26,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:26,142 INFO L87 Difference]: Start difference. First operand 552 states and 1836 transitions. Second operand 3 states. [2020-10-16 12:43:26,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:26,194 INFO L93 Difference]: Finished difference Result 756 states and 2485 transitions. [2020-10-16 12:43:26,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:26,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-16 12:43:26,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:26,200 INFO L225 Difference]: With dead ends: 756 [2020-10-16 12:43:26,200 INFO L226 Difference]: Without dead ends: 756 [2020-10-16 12:43:26,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:26,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-10-16 12:43:26,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 652. [2020-10-16 12:43:26,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-10-16 12:43:26,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2203 transitions. [2020-10-16 12:43:26,223 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2203 transitions. Word has length 14 [2020-10-16 12:43:26,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:26,224 INFO L481 AbstractCegarLoop]: Abstraction has 652 states and 2203 transitions. [2020-10-16 12:43:26,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:26,224 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2203 transitions. [2020-10-16 12:43:26,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:43:26,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:26,225 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:26,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 12:43:26,225 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:43:26,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:26,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1312017708, now seen corresponding path program 1 times [2020-10-16 12:43:26,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:26,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682219986] [2020-10-16 12:43:26,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:26,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:26,244 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:26,249 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:43:26,250 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:43:26,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-16 12:43:26,250 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:43:26,251 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 12:43:26,258 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,258 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,259 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,259 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,259 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,259 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,260 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,260 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,260 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,261 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,261 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,261 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,261 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,261 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,261 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,262 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,262 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,262 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,262 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,262 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,263 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,263 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,263 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,263 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,263 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,263 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,263 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,264 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,264 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,264 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,264 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,265 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,265 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,265 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,265 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,266 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,266 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,267 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,267 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,268 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,268 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,268 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,269 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,269 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,269 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,269 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,270 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,270 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,270 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,270 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,270 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,273 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,274 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,274 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,274 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,274 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,274 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,277 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,278 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,278 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,278 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,278 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,278 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,280 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,281 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,281 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,281 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:26,285 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:43:26,285 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 12:43:26,285 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:43:26,285 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:43:26,286 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:43:26,286 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:43:26,286 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:43:26,286 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:43:26,286 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:43:26,286 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:43:26,287 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:43:26,288 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 85 transitions, 215 flow [2020-10-16 12:43:26,288 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 85 transitions, 215 flow [2020-10-16 12:43:26,288 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 215 flow [2020-10-16 12:43:26,306 INFO L129 PetriNetUnfolder]: 11/129 cut-off events. [2020-10-16 12:43:26,306 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 12:43:26,308 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 129 events. 11/129 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 368 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 121. Up to 12 conditions per place. [2020-10-16 12:43:26,313 INFO L117 LiptonReduction]: Number of co-enabled transitions 4320 [2020-10-16 12:43:27,143 INFO L132 LiptonReduction]: Checked pairs total: 8086 [2020-10-16 12:43:27,143 INFO L134 LiptonReduction]: Total number of compositions: 79 [2020-10-16 12:43:27,144 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 28 transitions, 101 flow [2020-10-16 12:43:27,641 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6484 states. [2020-10-16 12:43:27,641 INFO L276 IsEmpty]: Start isEmpty. Operand 6484 states. [2020-10-16 12:43:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-16 12:43:27,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:27,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 12:43:27,642 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:27,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:27,642 INFO L82 PathProgramCache]: Analyzing trace with hash 666270871, now seen corresponding path program 1 times [2020-10-16 12:43:27,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:27,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827789006] [2020-10-16 12:43:27,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:43:27,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827789006] [2020-10-16 12:43:27,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:27,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:27,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [806669222] [2020-10-16 12:43:27,663 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:27,663 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:27,664 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-16 12:43:27,664 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:27,664 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:27,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:27,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:27,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:27,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:27,665 INFO L87 Difference]: Start difference. First operand 6484 states. Second operand 3 states. [2020-10-16 12:43:27,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:27,805 INFO L93 Difference]: Finished difference Result 7629 states and 32588 transitions. [2020-10-16 12:43:27,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:27,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-16 12:43:27,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:27,866 INFO L225 Difference]: With dead ends: 7629 [2020-10-16 12:43:27,866 INFO L226 Difference]: Without dead ends: 7629 [2020-10-16 12:43:27,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:28,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7629 states. [2020-10-16 12:43:28,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7629 to 6366. [2020-10-16 12:43:28,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6366 states. [2020-10-16 12:43:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6366 states to 6366 states and 28029 transitions. [2020-10-16 12:43:28,454 INFO L78 Accepts]: Start accepts. Automaton has 6366 states and 28029 transitions. Word has length 5 [2020-10-16 12:43:28,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:28,455 INFO L481 AbstractCegarLoop]: Abstraction has 6366 states and 28029 transitions. [2020-10-16 12:43:28,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:28,455 INFO L276 IsEmpty]: Start isEmpty. Operand 6366 states and 28029 transitions. [2020-10-16 12:43:28,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:43:28,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:28,455 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:28,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-16 12:43:28,456 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:28,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:28,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1690072825, now seen corresponding path program 1 times [2020-10-16 12:43:28,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:28,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884086977] [2020-10-16 12:43:28,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:43:28,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884086977] [2020-10-16 12:43:28,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:28,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:28,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [692543422] [2020-10-16 12:43:28,473 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:28,474 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:28,475 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 12:43:28,475 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:28,475 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:28,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:28,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:28,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:28,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:28,476 INFO L87 Difference]: Start difference. First operand 6366 states and 28029 transitions. Second operand 3 states. [2020-10-16 12:43:28,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:28,582 INFO L93 Difference]: Finished difference Result 9120 states and 39254 transitions. [2020-10-16 12:43:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:28,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 12:43:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:28,631 INFO L225 Difference]: With dead ends: 9120 [2020-10-16 12:43:28,631 INFO L226 Difference]: Without dead ends: 9120 [2020-10-16 12:43:28,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:29,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9120 states. [2020-10-16 12:43:29,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9120 to 7564. [2020-10-16 12:43:29,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7564 states. [2020-10-16 12:43:29,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7564 states to 7564 states and 33556 transitions. [2020-10-16 12:43:29,698 INFO L78 Accepts]: Start accepts. Automaton has 7564 states and 33556 transitions. Word has length 8 [2020-10-16 12:43:29,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:29,699 INFO L481 AbstractCegarLoop]: Abstraction has 7564 states and 33556 transitions. [2020-10-16 12:43:29,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:29,699 INFO L276 IsEmpty]: Start isEmpty. Operand 7564 states and 33556 transitions. [2020-10-16 12:43:29,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:43:29,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:29,699 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:29,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-16 12:43:29,700 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:29,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:29,700 INFO L82 PathProgramCache]: Analyzing trace with hash 868276956, now seen corresponding path program 1 times [2020-10-16 12:43:29,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:29,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019620954] [2020-10-16 12:43:29,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:43:29,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019620954] [2020-10-16 12:43:29,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:29,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:29,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1186093128] [2020-10-16 12:43:29,723 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:29,724 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:29,725 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-16 12:43:29,725 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:29,730 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:29,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:29,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:29,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:29,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:29,731 INFO L87 Difference]: Start difference. First operand 7564 states and 33556 transitions. Second operand 4 states. [2020-10-16 12:43:29,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:29,810 INFO L93 Difference]: Finished difference Result 6008 states and 26302 transitions. [2020-10-16 12:43:29,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:29,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 12:43:29,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:29,844 INFO L225 Difference]: With dead ends: 6008 [2020-10-16 12:43:29,844 INFO L226 Difference]: Without dead ends: 6008 [2020-10-16 12:43:29,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6008 states. [2020-10-16 12:43:30,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6008 to 4771. [2020-10-16 12:43:30,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4771 states. [2020-10-16 12:43:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4771 states to 4771 states and 20598 transitions. [2020-10-16 12:43:30,254 INFO L78 Accepts]: Start accepts. Automaton has 4771 states and 20598 transitions. Word has length 9 [2020-10-16 12:43:30,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:30,255 INFO L481 AbstractCegarLoop]: Abstraction has 4771 states and 20598 transitions. [2020-10-16 12:43:30,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:30,255 INFO L276 IsEmpty]: Start isEmpty. Operand 4771 states and 20598 transitions. [2020-10-16 12:43:30,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:43:30,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:30,255 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:30,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-16 12:43:30,256 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:30,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:30,256 INFO L82 PathProgramCache]: Analyzing trace with hash 852652394, now seen corresponding path program 1 times [2020-10-16 12:43:30,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:30,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224375942] [2020-10-16 12:43:30,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:43:30,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224375942] [2020-10-16 12:43:30,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:30,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:30,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [482823148] [2020-10-16 12:43:30,278 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:30,280 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:30,281 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-16 12:43:30,281 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:30,281 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:30,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:30,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:30,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:30,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:30,282 INFO L87 Difference]: Start difference. First operand 4771 states and 20598 transitions. Second operand 4 states. [2020-10-16 12:43:30,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:30,343 INFO L93 Difference]: Finished difference Result 3827 states and 16326 transitions. [2020-10-16 12:43:30,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:30,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 12:43:30,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:30,366 INFO L225 Difference]: With dead ends: 3827 [2020-10-16 12:43:30,366 INFO L226 Difference]: Without dead ends: 3827 [2020-10-16 12:43:30,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:30,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2020-10-16 12:43:30,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 2883. [2020-10-16 12:43:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2883 states. [2020-10-16 12:43:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2883 states to 2883 states and 12054 transitions. [2020-10-16 12:43:30,534 INFO L78 Accepts]: Start accepts. Automaton has 2883 states and 12054 transitions. Word has length 9 [2020-10-16 12:43:30,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:30,534 INFO L481 AbstractCegarLoop]: Abstraction has 2883 states and 12054 transitions. [2020-10-16 12:43:30,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:30,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2883 states and 12054 transitions. [2020-10-16 12:43:30,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:43:30,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:30,535 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:30,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-16 12:43:30,536 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:30,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:30,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1095418705, now seen corresponding path program 1 times [2020-10-16 12:43:30,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:30,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737582944] [2020-10-16 12:43:30,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:30,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 12:43:30,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737582944] [2020-10-16 12:43:30,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:30,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:30,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1727254832] [2020-10-16 12:43:30,559 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:30,560 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:30,561 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-16 12:43:30,561 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:30,562 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:30,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:30,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:30,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:30,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:30,563 INFO L87 Difference]: Start difference. First operand 2883 states and 12054 transitions. Second operand 3 states. [2020-10-16 12:43:30,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:30,625 INFO L93 Difference]: Finished difference Result 4275 states and 17545 transitions. [2020-10-16 12:43:30,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:30,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 12:43:30,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:30,645 INFO L225 Difference]: With dead ends: 4275 [2020-10-16 12:43:30,646 INFO L226 Difference]: Without dead ends: 4275 [2020-10-16 12:43:30,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:30,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2020-10-16 12:43:30,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 3574. [2020-10-16 12:43:30,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3574 states. [2020-10-16 12:43:30,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 15125 transitions. [2020-10-16 12:43:30,828 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 15125 transitions. Word has length 11 [2020-10-16 12:43:30,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:30,829 INFO L481 AbstractCegarLoop]: Abstraction has 3574 states and 15125 transitions. [2020-10-16 12:43:30,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:30,829 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 15125 transitions. [2020-10-16 12:43:30,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:43:30,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:30,832 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:30,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-16 12:43:30,832 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:30,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:30,832 INFO L82 PathProgramCache]: Analyzing trace with hash 401760447, now seen corresponding path program 1 times [2020-10-16 12:43:30,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:30,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398908957] [2020-10-16 12:43:30,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 12:43:30,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398908957] [2020-10-16 12:43:30,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:30,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:30,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2033342420] [2020-10-16 12:43:30,940 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:30,941 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:30,943 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 19 transitions. [2020-10-16 12:43:30,943 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:30,943 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:30,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:30,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:30,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:30,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:30,944 INFO L87 Difference]: Start difference. First operand 3574 states and 15125 transitions. Second operand 4 states. [2020-10-16 12:43:31,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:31,003 INFO L93 Difference]: Finished difference Result 2873 states and 12004 transitions. [2020-10-16 12:43:31,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:31,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 12:43:31,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:31,015 INFO L225 Difference]: With dead ends: 2873 [2020-10-16 12:43:31,016 INFO L226 Difference]: Without dead ends: 2873 [2020-10-16 12:43:31,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:31,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-10-16 12:43:31,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2172. [2020-10-16 12:43:31,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2172 states. [2020-10-16 12:43:31,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 8883 transitions. [2020-10-16 12:43:31,110 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 8883 transitions. Word has length 12 [2020-10-16 12:43:31,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:31,110 INFO L481 AbstractCegarLoop]: Abstraction has 2172 states and 8883 transitions. [2020-10-16 12:43:31,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:31,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 8883 transitions. [2020-10-16 12:43:31,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:43:31,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:31,112 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:31,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-16 12:43:31,112 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:31,113 INFO L82 PathProgramCache]: Analyzing trace with hash -596519610, now seen corresponding path program 1 times [2020-10-16 12:43:31,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:31,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599375178] [2020-10-16 12:43:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:31,132 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 12:43:31,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599375178] [2020-10-16 12:43:31,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:31,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:31,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1707729925] [2020-10-16 12:43:31,133 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:31,134 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:31,135 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2020-10-16 12:43:31,135 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:31,135 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:31,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:31,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:31,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:31,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:31,136 INFO L87 Difference]: Start difference. First operand 2172 states and 8883 transitions. Second operand 3 states. [2020-10-16 12:43:31,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:31,182 INFO L93 Difference]: Finished difference Result 3177 states and 12799 transitions. [2020-10-16 12:43:31,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:31,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-16 12:43:31,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:31,197 INFO L225 Difference]: With dead ends: 3177 [2020-10-16 12:43:31,197 INFO L226 Difference]: Without dead ends: 3177 [2020-10-16 12:43:31,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3177 states. [2020-10-16 12:43:31,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3177 to 2671. [2020-10-16 12:43:31,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2671 states. [2020-10-16 12:43:31,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2671 states to 2671 states and 11075 transitions. [2020-10-16 12:43:31,315 INFO L78 Accepts]: Start accepts. Automaton has 2671 states and 11075 transitions. Word has length 14 [2020-10-16 12:43:31,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:31,316 INFO L481 AbstractCegarLoop]: Abstraction has 2671 states and 11075 transitions. [2020-10-16 12:43:31,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:31,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2671 states and 11075 transitions. [2020-10-16 12:43:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:43:31,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:31,317 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:31,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-16 12:43:31,317 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:31,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:31,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1312236012, now seen corresponding path program 1 times [2020-10-16 12:43:31,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:31,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392832250] [2020-10-16 12:43:31,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 12:43:31,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392832250] [2020-10-16 12:43:31,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:31,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:31,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [31741436] [2020-10-16 12:43:31,348 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:31,350 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:31,351 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 28 transitions. [2020-10-16 12:43:31,351 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:31,352 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:31,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:31,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:31,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:31,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:31,353 INFO L87 Difference]: Start difference. First operand 2671 states and 11075 transitions. Second operand 4 states. [2020-10-16 12:43:31,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:31,396 INFO L93 Difference]: Finished difference Result 2165 states and 8845 transitions. [2020-10-16 12:43:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:31,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-16 12:43:31,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:31,404 INFO L225 Difference]: With dead ends: 2165 [2020-10-16 12:43:31,405 INFO L226 Difference]: Without dead ends: 2165 [2020-10-16 12:43:31,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:31,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2020-10-16 12:43:31,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1659. [2020-10-16 12:43:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2020-10-16 12:43:31,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 6615 transitions. [2020-10-16 12:43:31,469 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 6615 transitions. Word has length 15 [2020-10-16 12:43:31,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:31,470 INFO L481 AbstractCegarLoop]: Abstraction has 1659 states and 6615 transitions. [2020-10-16 12:43:31,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:31,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 6615 transitions. [2020-10-16 12:43:31,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:43:31,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:31,473 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:31,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-16 12:43:31,473 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:31,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:31,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1514810044, now seen corresponding path program 1 times [2020-10-16 12:43:31,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:31,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2606672] [2020-10-16 12:43:31,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:31,500 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-16 12:43:31,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2606672] [2020-10-16 12:43:31,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:31,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:31,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2120823052] [2020-10-16 12:43:31,502 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:31,504 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:31,505 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-16 12:43:31,505 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:31,506 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:31,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:31,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:31,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:31,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:31,507 INFO L87 Difference]: Start difference. First operand 1659 states and 6615 transitions. Second operand 3 states. [2020-10-16 12:43:31,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:31,545 INFO L93 Difference]: Finished difference Result 2295 states and 9088 transitions. [2020-10-16 12:43:31,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:31,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 12:43:31,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:31,552 INFO L225 Difference]: With dead ends: 2295 [2020-10-16 12:43:31,553 INFO L226 Difference]: Without dead ends: 2295 [2020-10-16 12:43:31,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:31,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2020-10-16 12:43:31,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 1975. [2020-10-16 12:43:31,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-10-16 12:43:31,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 8000 transitions. [2020-10-16 12:43:31,620 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 8000 transitions. Word has length 17 [2020-10-16 12:43:31,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:31,620 INFO L481 AbstractCegarLoop]: Abstraction has 1975 states and 8000 transitions. [2020-10-16 12:43:31,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:31,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 8000 transitions. [2020-10-16 12:43:31,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 12:43:31,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:31,622 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:31,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-16 12:43:31,623 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:31,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:31,623 INFO L82 PathProgramCache]: Analyzing trace with hash -285527274, now seen corresponding path program 1 times [2020-10-16 12:43:31,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:31,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082382821] [2020-10-16 12:43:31,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-16 12:43:31,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082382821] [2020-10-16 12:43:31,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:31,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:31,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [440399797] [2020-10-16 12:43:31,654 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:31,656 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:31,658 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 31 transitions. [2020-10-16 12:43:31,658 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:31,658 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:31,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:31,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:31,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:31,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:31,659 INFO L87 Difference]: Start difference. First operand 1975 states and 8000 transitions. Second operand 4 states. [2020-10-16 12:43:31,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:31,703 INFO L93 Difference]: Finished difference Result 1655 states and 6592 transitions. [2020-10-16 12:43:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:31,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-16 12:43:31,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:31,709 INFO L225 Difference]: With dead ends: 1655 [2020-10-16 12:43:31,710 INFO L226 Difference]: Without dead ends: 1655 [2020-10-16 12:43:31,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:31,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2020-10-16 12:43:31,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1335. [2020-10-16 12:43:31,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-10-16 12:43:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 5184 transitions. [2020-10-16 12:43:31,752 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 5184 transitions. Word has length 18 [2020-10-16 12:43:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:31,753 INFO L481 AbstractCegarLoop]: Abstraction has 1335 states and 5184 transitions. [2020-10-16 12:43:31,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 5184 transitions. [2020-10-16 12:43:31,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 12:43:31,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:31,755 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:31,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-16 12:43:31,755 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:31,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:31,756 INFO L82 PathProgramCache]: Analyzing trace with hash -285687237, now seen corresponding path program 1 times [2020-10-16 12:43:31,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:31,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782925134] [2020-10-16 12:43:31,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:31,768 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:31,773 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:31,778 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:43:31,779 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:43:31,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-16 12:43:31,779 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:43:31,780 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-16 12:43:31,788 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,788 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,788 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,789 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,789 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,789 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,789 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,789 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,789 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,789 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,790 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,790 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,790 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,790 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,790 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,790 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,791 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,791 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,791 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,791 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,791 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,791 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,791 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,792 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,792 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,792 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,792 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,792 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,792 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,793 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,793 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,793 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,793 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,793 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,793 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,793 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,793 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,794 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,794 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,794 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,794 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,794 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,794 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,794 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,794 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,795 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,795 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,795 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,795 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,796 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,796 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,796 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,796 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,797 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,797 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,797 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,797 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,797 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,797 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,797 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,798 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,798 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,798 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,798 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,798 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,798 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,799 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,799 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,799 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,800 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,800 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,800 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,800 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,800 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,807 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,808 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,812 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,812 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,812 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,813 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,814 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,814 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,814 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,815 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,815 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:31,817 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:43:31,817 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 12:43:31,817 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:43:31,818 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:43:31,818 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:43:31,818 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:43:31,818 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:43:31,818 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:43:31,818 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:43:31,818 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:43:31,819 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:43:31,820 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 98 transitions, 256 flow [2020-10-16 12:43:31,820 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 98 transitions, 256 flow [2020-10-16 12:43:31,820 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 104 places, 98 transitions, 256 flow [2020-10-16 12:43:31,839 INFO L129 PetriNetUnfolder]: 13/151 cut-off events. [2020-10-16 12:43:31,839 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-16 12:43:31,842 INFO L80 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 151 events. 13/151 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 434 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2020-10-16 12:43:31,850 INFO L117 LiptonReduction]: Number of co-enabled transitions 6120 [2020-10-16 12:43:32,756 INFO L132 LiptonReduction]: Checked pairs total: 12685 [2020-10-16 12:43:32,756 INFO L134 LiptonReduction]: Total number of compositions: 92 [2020-10-16 12:43:32,757 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 33 transitions, 126 flow [2020-10-16 12:43:36,593 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 25940 states. [2020-10-16 12:43:36,593 INFO L276 IsEmpty]: Start isEmpty. Operand 25940 states. [2020-10-16 12:43:36,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-16 12:43:36,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:36,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 12:43:36,594 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:36,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:36,594 INFO L82 PathProgramCache]: Analyzing trace with hash 862156483, now seen corresponding path program 1 times [2020-10-16 12:43:36,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:36,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538943965] [2020-10-16 12:43:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:43:36,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538943965] [2020-10-16 12:43:36,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:36,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:36,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [935322987] [2020-10-16 12:43:36,623 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:36,623 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:36,624 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-16 12:43:36,624 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:36,624 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:36,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:36,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:36,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:36,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:36,625 INFO L87 Difference]: Start difference. First operand 25940 states. Second operand 3 states. [2020-10-16 12:43:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:37,100 INFO L93 Difference]: Finished difference Result 30660 states and 153869 transitions. [2020-10-16 12:43:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:37,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-16 12:43:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:37,206 INFO L225 Difference]: With dead ends: 30660 [2020-10-16 12:43:37,206 INFO L226 Difference]: Without dead ends: 30660 [2020-10-16 12:43:37,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:39,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30660 states. [2020-10-16 12:43:40,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30660 to 25560. [2020-10-16 12:43:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25560 states. [2020-10-16 12:43:40,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25560 states to 25560 states and 131665 transitions. [2020-10-16 12:43:40,393 INFO L78 Accepts]: Start accepts. Automaton has 25560 states and 131665 transitions. Word has length 5 [2020-10-16 12:43:40,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:40,393 INFO L481 AbstractCegarLoop]: Abstraction has 25560 states and 131665 transitions. [2020-10-16 12:43:40,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:40,393 INFO L276 IsEmpty]: Start isEmpty. Operand 25560 states and 131665 transitions. [2020-10-16 12:43:40,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:43:40,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:40,393 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:40,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-16 12:43:40,394 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:40,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:40,394 INFO L82 PathProgramCache]: Analyzing trace with hash 422134040, now seen corresponding path program 1 times [2020-10-16 12:43:40,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:40,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231553905] [2020-10-16 12:43:40,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:43:40,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231553905] [2020-10-16 12:43:40,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:40,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:40,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [259056270] [2020-10-16 12:43:40,415 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:40,415 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:40,416 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 12:43:40,416 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:40,416 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:40,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:40,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:40,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:40,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:40,417 INFO L87 Difference]: Start difference. First operand 25560 states and 131665 transitions. Second operand 3 states. [2020-10-16 12:43:40,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:40,860 INFO L93 Difference]: Finished difference Result 36927 states and 186525 transitions. [2020-10-16 12:43:40,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:40,860 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 12:43:40,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:42,916 INFO L225 Difference]: With dead ends: 36927 [2020-10-16 12:43:42,917 INFO L226 Difference]: Without dead ends: 36927 [2020-10-16 12:43:42,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:44,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36927 states. [2020-10-16 12:43:44,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36927 to 30580. [2020-10-16 12:43:44,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30580 states. [2020-10-16 12:43:45,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30580 states to 30580 states and 158564 transitions. [2020-10-16 12:43:45,093 INFO L78 Accepts]: Start accepts. Automaton has 30580 states and 158564 transitions. Word has length 8 [2020-10-16 12:43:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:45,094 INFO L481 AbstractCegarLoop]: Abstraction has 30580 states and 158564 transitions. [2020-10-16 12:43:45,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:45,094 INFO L276 IsEmpty]: Start isEmpty. Operand 30580 states and 158564 transitions. [2020-10-16 12:43:45,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:43:45,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:45,094 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:45,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-16 12:43:45,094 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:45,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:45,095 INFO L82 PathProgramCache]: Analyzing trace with hash 203971322, now seen corresponding path program 1 times [2020-10-16 12:43:45,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:45,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795643909] [2020-10-16 12:43:45,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:45,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 12:43:45,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795643909] [2020-10-16 12:43:45,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:45,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:45,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1384862927] [2020-10-16 12:43:45,133 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:45,134 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:45,135 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-16 12:43:45,136 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:45,138 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:45,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:45,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:45,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:45,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:45,139 INFO L87 Difference]: Start difference. First operand 30580 states and 158564 transitions. Second operand 4 states. [2020-10-16 12:43:45,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:45,336 INFO L93 Difference]: Finished difference Result 24233 states and 124256 transitions. [2020-10-16 12:43:45,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:45,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 12:43:45,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:45,418 INFO L225 Difference]: With dead ends: 24233 [2020-10-16 12:43:45,418 INFO L226 Difference]: Without dead ends: 24233 [2020-10-16 12:43:45,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:46,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24233 states. [2020-10-16 12:43:46,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24233 to 19165. [2020-10-16 12:43:46,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19165 states. [2020-10-16 12:43:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19165 states to 19165 states and 97114 transitions. [2020-10-16 12:43:46,864 INFO L78 Accepts]: Start accepts. Automaton has 19165 states and 97114 transitions. Word has length 9 [2020-10-16 12:43:46,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:46,864 INFO L481 AbstractCegarLoop]: Abstraction has 19165 states and 97114 transitions. [2020-10-16 12:43:46,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 19165 states and 97114 transitions. [2020-10-16 12:43:46,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:43:46,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:46,864 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:46,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-16 12:43:46,865 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:46,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:46,865 INFO L82 PathProgramCache]: Analyzing trace with hash 201256629, now seen corresponding path program 1 times [2020-10-16 12:43:46,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:46,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683352771] [2020-10-16 12:43:46,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:43:46,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683352771] [2020-10-16 12:43:46,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:46,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:46,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1810143390] [2020-10-16 12:43:46,911 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:46,911 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:46,912 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-16 12:43:46,912 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:46,913 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:46,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:46,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:46,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:46,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:46,914 INFO L87 Difference]: Start difference. First operand 19165 states and 97114 transitions. Second operand 4 states. [2020-10-16 12:43:47,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:47,066 INFO L93 Difference]: Finished difference Result 15344 states and 76976 transitions. [2020-10-16 12:43:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:47,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 12:43:47,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:47,117 INFO L225 Difference]: With dead ends: 15344 [2020-10-16 12:43:47,118 INFO L226 Difference]: Without dead ends: 15344 [2020-10-16 12:43:47,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:47,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15344 states. [2020-10-16 12:43:47,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15344 to 11523. [2020-10-16 12:43:47,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11523 states. [2020-10-16 12:43:47,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11523 states to 11523 states and 56838 transitions. [2020-10-16 12:43:47,698 INFO L78 Accepts]: Start accepts. Automaton has 11523 states and 56838 transitions. Word has length 9 [2020-10-16 12:43:47,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:47,698 INFO L481 AbstractCegarLoop]: Abstraction has 11523 states and 56838 transitions. [2020-10-16 12:43:47,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:47,698 INFO L276 IsEmpty]: Start isEmpty. Operand 11523 states and 56838 transitions. [2020-10-16 12:43:47,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:43:47,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:47,699 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:47,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-16 12:43:47,699 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:47,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:47,699 INFO L82 PathProgramCache]: Analyzing trace with hash -40974610, now seen corresponding path program 1 times [2020-10-16 12:43:47,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:47,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115993026] [2020-10-16 12:43:47,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 12:43:47,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115993026] [2020-10-16 12:43:47,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:47,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:47,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1470704459] [2020-10-16 12:43:47,726 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:47,727 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:47,727 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-16 12:43:47,728 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:47,728 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:47,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:47,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:47,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:47,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:47,729 INFO L87 Difference]: Start difference. First operand 11523 states and 56838 transitions. Second operand 3 states. [2020-10-16 12:43:47,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:47,863 INFO L93 Difference]: Finished difference Result 17226 states and 83578 transitions. [2020-10-16 12:43:47,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:47,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 12:43:47,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:47,914 INFO L225 Difference]: With dead ends: 17226 [2020-10-16 12:43:47,914 INFO L226 Difference]: Without dead ends: 17226 [2020-10-16 12:43:47,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:48,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17226 states. [2020-10-16 12:43:48,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17226 to 14368. [2020-10-16 12:43:48,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14368 states. [2020-10-16 12:43:48,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14368 states to 14368 states and 71601 transitions. [2020-10-16 12:43:48,785 INFO L78 Accepts]: Start accepts. Automaton has 14368 states and 71601 transitions. Word has length 11 [2020-10-16 12:43:48,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:48,785 INFO L481 AbstractCegarLoop]: Abstraction has 14368 states and 71601 transitions. [2020-10-16 12:43:48,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:48,785 INFO L276 IsEmpty]: Start isEmpty. Operand 14368 states and 71601 transitions. [2020-10-16 12:43:48,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:43:48,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:48,786 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:48,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-16 12:43:48,786 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:48,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:48,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1270210238, now seen corresponding path program 1 times [2020-10-16 12:43:48,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:48,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855232759] [2020-10-16 12:43:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 12:43:48,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855232759] [2020-10-16 12:43:48,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:48,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:48,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [725978453] [2020-10-16 12:43:48,811 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:48,812 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:48,813 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 19 transitions. [2020-10-16 12:43:48,813 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:48,813 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:48,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:48,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:48,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:48,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:48,814 INFO L87 Difference]: Start difference. First operand 14368 states and 71601 transitions. Second operand 4 states. [2020-10-16 12:43:48,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:48,923 INFO L93 Difference]: Finished difference Result 11510 states and 56766 transitions. [2020-10-16 12:43:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:48,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 12:43:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:48,957 INFO L225 Difference]: With dead ends: 11510 [2020-10-16 12:43:48,957 INFO L226 Difference]: Without dead ends: 11510 [2020-10-16 12:43:48,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:49,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11510 states. [2020-10-16 12:43:49,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11510 to 8652. [2020-10-16 12:43:49,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8652 states. [2020-10-16 12:43:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 41931 transitions. [2020-10-16 12:43:49,307 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 41931 transitions. Word has length 12 [2020-10-16 12:43:49,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:49,307 INFO L481 AbstractCegarLoop]: Abstraction has 8652 states and 41931 transitions. [2020-10-16 12:43:49,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:49,307 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 41931 transitions. [2020-10-16 12:43:49,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:43:49,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:49,308 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:49,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-16 12:43:49,308 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:49,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:49,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1064251902, now seen corresponding path program 1 times [2020-10-16 12:43:49,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:49,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767831964] [2020-10-16 12:43:49,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 12:43:49,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767831964] [2020-10-16 12:43:49,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:49,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:49,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1841238402] [2020-10-16 12:43:49,334 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:49,335 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:49,336 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2020-10-16 12:43:49,336 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:49,336 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:49,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:49,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:49,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:49,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:49,337 INFO L87 Difference]: Start difference. First operand 8652 states and 41931 transitions. Second operand 3 states. [2020-10-16 12:43:49,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:49,437 INFO L93 Difference]: Finished difference Result 12888 states and 61498 transitions. [2020-10-16 12:43:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:49,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-16 12:43:49,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:49,474 INFO L225 Difference]: With dead ends: 12888 [2020-10-16 12:43:49,474 INFO L226 Difference]: Without dead ends: 12888 [2020-10-16 12:43:49,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:49,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12888 states. [2020-10-16 12:43:49,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12888 to 10765. [2020-10-16 12:43:49,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10765 states. [2020-10-16 12:43:50,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10765 states to 10765 states and 52746 transitions. [2020-10-16 12:43:50,025 INFO L78 Accepts]: Start accepts. Automaton has 10765 states and 52746 transitions. Word has length 14 [2020-10-16 12:43:50,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:50,025 INFO L481 AbstractCegarLoop]: Abstraction has 10765 states and 52746 transitions. [2020-10-16 12:43:50,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:50,025 INFO L276 IsEmpty]: Start isEmpty. Operand 10765 states and 52746 transitions. [2020-10-16 12:43:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:43:50,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:50,026 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:50,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-16 12:43:50,026 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:50,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:50,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1367932408, now seen corresponding path program 1 times [2020-10-16 12:43:50,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:50,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954990146] [2020-10-16 12:43:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:50,057 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 12:43:50,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954990146] [2020-10-16 12:43:50,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:50,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:50,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [906754097] [2020-10-16 12:43:50,058 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:50,059 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:50,061 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 28 transitions. [2020-10-16 12:43:50,061 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:50,061 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:50,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:50,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:50,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:50,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:50,062 INFO L87 Difference]: Start difference. First operand 10765 states and 52746 transitions. Second operand 4 states. [2020-10-16 12:43:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:50,165 INFO L93 Difference]: Finished difference Result 8642 states and 41871 transitions. [2020-10-16 12:43:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:50,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-16 12:43:50,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:50,192 INFO L225 Difference]: With dead ends: 8642 [2020-10-16 12:43:50,193 INFO L226 Difference]: Without dead ends: 8642 [2020-10-16 12:43:50,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:50,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8642 states. [2020-10-16 12:43:50,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8642 to 6519. [2020-10-16 12:43:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6519 states. [2020-10-16 12:43:50,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6519 states to 6519 states and 30996 transitions. [2020-10-16 12:43:50,431 INFO L78 Accepts]: Start accepts. Automaton has 6519 states and 30996 transitions. Word has length 15 [2020-10-16 12:43:50,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:50,431 INFO L481 AbstractCegarLoop]: Abstraction has 6519 states and 30996 transitions. [2020-10-16 12:43:50,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:50,431 INFO L276 IsEmpty]: Start isEmpty. Operand 6519 states and 30996 transitions. [2020-10-16 12:43:50,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:43:50,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:50,432 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:50,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-16 12:43:50,433 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:50,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:50,433 INFO L82 PathProgramCache]: Analyzing trace with hash 152749525, now seen corresponding path program 1 times [2020-10-16 12:43:50,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:50,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338539448] [2020-10-16 12:43:50,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-16 12:43:50,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338539448] [2020-10-16 12:43:50,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:50,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:50,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1525377825] [2020-10-16 12:43:50,461 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:50,462 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:50,463 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-16 12:43:50,463 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:50,463 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:50,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:50,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:50,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:50,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:50,464 INFO L87 Difference]: Start difference. First operand 6519 states and 30996 transitions. Second operand 3 states. [2020-10-16 12:43:50,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:50,543 INFO L93 Difference]: Finished difference Result 9576 states and 44989 transitions. [2020-10-16 12:43:50,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:50,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 12:43:50,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:50,569 INFO L225 Difference]: With dead ends: 9576 [2020-10-16 12:43:50,569 INFO L226 Difference]: Without dead ends: 9576 [2020-10-16 12:43:50,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:50,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9576 states. [2020-10-16 12:43:50,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9576 to 8044. [2020-10-16 12:43:50,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8044 states. [2020-10-16 12:43:50,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8044 states to 8044 states and 38736 transitions. [2020-10-16 12:43:50,836 INFO L78 Accepts]: Start accepts. Automaton has 8044 states and 38736 transitions. Word has length 17 [2020-10-16 12:43:50,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:50,836 INFO L481 AbstractCegarLoop]: Abstraction has 8044 states and 38736 transitions. [2020-10-16 12:43:50,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:50,836 INFO L276 IsEmpty]: Start isEmpty. Operand 8044 states and 38736 transitions. [2020-10-16 12:43:50,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 12:43:50,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:50,838 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:50,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-16 12:43:50,838 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:50,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:50,839 INFO L82 PathProgramCache]: Analyzing trace with hash 440270196, now seen corresponding path program 1 times [2020-10-16 12:43:50,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:50,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370082814] [2020-10-16 12:43:50,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-16 12:43:50,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370082814] [2020-10-16 12:43:50,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:50,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:50,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [391035523] [2020-10-16 12:43:50,865 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:50,867 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:50,869 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 25 transitions. [2020-10-16 12:43:50,869 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:50,869 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:50,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:50,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:50,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:50,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:50,870 INFO L87 Difference]: Start difference. First operand 8044 states and 38736 transitions. Second operand 4 states. [2020-10-16 12:43:50,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:50,953 INFO L93 Difference]: Finished difference Result 6512 states and 30951 transitions. [2020-10-16 12:43:50,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:50,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-16 12:43:50,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:50,974 INFO L225 Difference]: With dead ends: 6512 [2020-10-16 12:43:50,974 INFO L226 Difference]: Without dead ends: 6512 [2020-10-16 12:43:50,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:51,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6512 states. [2020-10-16 12:43:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6512 to 4980. [2020-10-16 12:43:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4980 states. [2020-10-16 12:43:51,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4980 states to 4980 states and 23166 transitions. [2020-10-16 12:43:51,153 INFO L78 Accepts]: Start accepts. Automaton has 4980 states and 23166 transitions. Word has length 18 [2020-10-16 12:43:51,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:51,153 INFO L481 AbstractCegarLoop]: Abstraction has 4980 states and 23166 transitions. [2020-10-16 12:43:51,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:51,153 INFO L276 IsEmpty]: Start isEmpty. Operand 4980 states and 23166 transitions. [2020-10-16 12:43:51,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:43:51,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:51,155 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:51,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-16 12:43:51,156 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:51,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:51,156 INFO L82 PathProgramCache]: Analyzing trace with hash 2026385382, now seen corresponding path program 1 times [2020-10-16 12:43:51,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:51,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884248956] [2020-10-16 12:43:51,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:51,182 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-16 12:43:51,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884248956] [2020-10-16 12:43:51,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:51,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:43:51,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1709963965] [2020-10-16 12:43:51,183 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:51,185 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:51,186 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 20 transitions. [2020-10-16 12:43:51,186 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:51,186 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:51,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:43:51,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:51,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:43:51,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:51,187 INFO L87 Difference]: Start difference. First operand 4980 states and 23166 transitions. Second operand 3 states. [2020-10-16 12:43:51,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:51,258 INFO L93 Difference]: Finished difference Result 6912 states and 31999 transitions. [2020-10-16 12:43:51,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:51,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-16 12:43:51,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:51,280 INFO L225 Difference]: With dead ends: 6912 [2020-10-16 12:43:51,281 INFO L226 Difference]: Without dead ends: 6912 [2020-10-16 12:43:51,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:43:51,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6912 states. [2020-10-16 12:43:51,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6912 to 5944. [2020-10-16 12:43:51,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5944 states. [2020-10-16 12:43:51,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 28053 transitions. [2020-10-16 12:43:51,486 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 28053 transitions. Word has length 20 [2020-10-16 12:43:51,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:51,486 INFO L481 AbstractCegarLoop]: Abstraction has 5944 states and 28053 transitions. [2020-10-16 12:43:51,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:43:51,486 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 28053 transitions. [2020-10-16 12:43:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:43:51,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:51,489 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:51,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-16 12:43:51,490 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:51,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:51,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1606559931, now seen corresponding path program 1 times [2020-10-16 12:43:51,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:51,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862034110] [2020-10-16 12:43:51,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:43:51,516 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-16 12:43:51,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862034110] [2020-10-16 12:43:51,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:43:51,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:43:51,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [127995523] [2020-10-16 12:43:51,517 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:43:51,519 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:43:51,522 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 34 transitions. [2020-10-16 12:43:51,522 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:43:51,523 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:43:51,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:43:51,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:43:51,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:43:51,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:43:51,524 INFO L87 Difference]: Start difference. First operand 5944 states and 28053 transitions. Second operand 4 states. [2020-10-16 12:43:51,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:43:51,596 INFO L93 Difference]: Finished difference Result 4976 states and 23139 transitions. [2020-10-16 12:43:51,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:43:51,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-16 12:43:51,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:43:51,619 INFO L225 Difference]: With dead ends: 4976 [2020-10-16 12:43:51,619 INFO L226 Difference]: Without dead ends: 4976 [2020-10-16 12:43:51,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:43:51,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2020-10-16 12:43:51,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4008. [2020-10-16 12:43:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4008 states. [2020-10-16 12:43:52,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 18225 transitions. [2020-10-16 12:43:52,038 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 18225 transitions. Word has length 21 [2020-10-16 12:43:52,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:43:52,039 INFO L481 AbstractCegarLoop]: Abstraction has 4008 states and 18225 transitions. [2020-10-16 12:43:52,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:43:52,039 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 18225 transitions. [2020-10-16 12:43:52,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:43:52,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:43:52,043 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:43:52,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-16 12:43:52,043 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:43:52,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:43:52,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1606739912, now seen corresponding path program 1 times [2020-10-16 12:43:52,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:43:52,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709642623] [2020-10-16 12:43:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:43:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:52,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:43:52,078 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:43:52,091 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:43:52,091 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:43:52,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-16 12:43:52,092 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:43:52,092 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-16 12:43:52,110 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,111 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,111 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,111 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,111 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,111 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,111 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,111 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,112 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,112 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,113 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,113 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,113 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,113 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,113 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,114 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,114 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,114 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,114 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,114 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,115 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,115 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,115 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,116 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,116 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,116 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,116 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,117 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,117 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,117 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,117 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,117 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,117 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,118 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,118 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,118 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,118 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,118 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,118 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,118 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,118 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,119 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,119 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,119 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,119 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,119 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,119 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,119 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,119 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,120 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,120 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,120 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,120 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,121 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,121 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,121 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,121 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,122 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,122 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,122 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,122 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,123 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,123 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,123 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,124 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,124 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,124 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,124 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,124 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,124 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,124 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,124 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,125 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,125 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,125 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,125 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,125 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,125 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,126 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,127 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,127 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,127 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,127 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,127 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,128 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,129 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,129 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,129 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,129 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,129 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,129 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,130 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,130 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,131 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,131 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,131 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,131 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,132 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,132 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,132 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,132 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,133 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,133 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,134 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,134 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,134 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,134 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,134 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,135 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,136 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,136 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,136 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,136 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,137 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,137 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:43:52,138 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:43:52,138 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-16 12:43:52,138 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:43:52,138 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:43:52,139 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:43:52,139 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:43:52,139 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:43:52,139 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:43:52,139 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:43:52,139 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:43:52,141 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:43:52,141 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 111 transitions, 299 flow [2020-10-16 12:43:52,141 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 111 transitions, 299 flow [2020-10-16 12:43:52,141 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 111 transitions, 299 flow [2020-10-16 12:43:52,185 INFO L129 PetriNetUnfolder]: 15/173 cut-off events. [2020-10-16 12:43:52,186 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-16 12:43:52,191 INFO L80 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 173 events. 15/173 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 517 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 182. Up to 16 conditions per place. [2020-10-16 12:43:52,202 INFO L117 LiptonReduction]: Number of co-enabled transitions 8232 [2020-10-16 12:43:53,169 INFO L132 LiptonReduction]: Checked pairs total: 15415 [2020-10-16 12:43:53,169 INFO L134 LiptonReduction]: Total number of compositions: 102 [2020-10-16 12:43:53,169 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 34 transitions, 145 flow [2020-10-16 12:44:33,436 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 103764 states. [2020-10-16 12:44:33,436 INFO L276 IsEmpty]: Start isEmpty. Operand 103764 states. [2020-10-16 12:44:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-16 12:44:33,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:44:33,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 12:44:33,437 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:44:33,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:44:33,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1079248743, now seen corresponding path program 1 times [2020-10-16 12:44:33,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:44:33,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371883241] [2020-10-16 12:44:33,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:44:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:44:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:44:33,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371883241] [2020-10-16 12:44:33,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:44:33,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:44:33,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1597766719] [2020-10-16 12:44:33,448 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:44:33,449 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:44:33,449 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-16 12:44:33,449 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:44:33,449 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:44:33,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:44:33,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:44:33,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:44:33,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:44:33,450 INFO L87 Difference]: Start difference. First operand 103764 states. Second operand 3 states. [2020-10-16 12:44:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:44:34,381 INFO L93 Difference]: Finished difference Result 122811 states and 708293 transitions. [2020-10-16 12:44:34,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:44:34,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-16 12:44:34,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:44:34,910 INFO L225 Difference]: With dead ends: 122811 [2020-10-16 12:44:34,911 INFO L226 Difference]: Without dead ends: 122811 [2020-10-16 12:44:34,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:44:48,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122811 states. [2020-10-16 12:44:50,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122811 to 102354. [2020-10-16 12:44:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102354 states. [2020-10-16 12:44:51,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102354 states to 102354 states and 603935 transitions. [2020-10-16 12:44:51,214 INFO L78 Accepts]: Start accepts. Automaton has 102354 states and 603935 transitions. Word has length 5 [2020-10-16 12:44:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:44:51,214 INFO L481 AbstractCegarLoop]: Abstraction has 102354 states and 603935 transitions. [2020-10-16 12:44:51,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:44:51,214 INFO L276 IsEmpty]: Start isEmpty. Operand 102354 states and 603935 transitions. [2020-10-16 12:44:51,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:44:51,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:44:51,214 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 12:44:51,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-16 12:44:51,215 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:44:51,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:44:51,215 INFO L82 PathProgramCache]: Analyzing trace with hash -423468189, now seen corresponding path program 1 times [2020-10-16 12:44:51,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:44:51,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084145221] [2020-10-16 12:44:51,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:44:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:44:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:44:51,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084145221] [2020-10-16 12:44:51,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:44:51,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:44:51,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [348652546] [2020-10-16 12:44:51,231 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:44:51,231 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:44:51,231 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 12:44:51,232 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:44:51,232 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:44:51,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:44:51,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:44:51,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:44:51,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:44:51,233 INFO L87 Difference]: Start difference. First operand 102354 states and 603935 transitions. Second operand 3 states. [2020-10-16 12:44:56,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:44:56,867 INFO L93 Difference]: Finished difference Result 148254 states and 859795 transitions. [2020-10-16 12:44:56,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:44:56,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 12:44:56,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:44:57,524 INFO L225 Difference]: With dead ends: 148254 [2020-10-16 12:44:57,524 INFO L226 Difference]: Without dead ends: 148254 [2020-10-16 12:44:57,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:45:10,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148254 states. [2020-10-16 12:45:18,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148254 to 122716. [2020-10-16 12:45:18,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122716 states. [2020-10-16 12:45:19,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122716 states to 122716 states and 728220 transitions. [2020-10-16 12:45:19,581 INFO L78 Accepts]: Start accepts. Automaton has 122716 states and 728220 transitions. Word has length 8 [2020-10-16 12:45:19,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:45:19,582 INFO L481 AbstractCegarLoop]: Abstraction has 122716 states and 728220 transitions. [2020-10-16 12:45:19,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:45:19,582 INFO L276 IsEmpty]: Start isEmpty. Operand 122716 states and 728220 transitions. [2020-10-16 12:45:19,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:45:19,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:45:19,582 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:45:19,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-16 12:45:19,582 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:45:19,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:45:19,583 INFO L82 PathProgramCache]: Analyzing trace with hash -242594376, now seen corresponding path program 1 times [2020-10-16 12:45:19,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:45:19,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904076639] [2020-10-16 12:45:19,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:45:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:45:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:45:19,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904076639] [2020-10-16 12:45:19,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:45:19,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:45:19,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1004508171] [2020-10-16 12:45:19,604 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:45:19,605 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:45:19,606 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-16 12:45:19,606 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:45:19,610 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:45:19,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:45:19,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:45:19,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:45:19,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:45:19,611 INFO L87 Difference]: Start difference. First operand 122716 states and 728220 transitions. Second operand 4 states. [2020-10-16 12:45:26,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:45:26,605 INFO L93 Difference]: Finished difference Result 97178 states and 571107 transitions. [2020-10-16 12:45:26,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:45:26,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 12:45:26,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:45:27,050 INFO L225 Difference]: With dead ends: 97178 [2020-10-16 12:45:27,051 INFO L226 Difference]: Without dead ends: 97178 [2020-10-16 12:45:27,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:45:32,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97178 states. [2020-10-16 12:45:34,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97178 to 76759. [2020-10-16 12:45:34,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76759 states. [2020-10-16 12:45:34,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76759 states to 76759 states and 446504 transitions. [2020-10-16 12:45:34,996 INFO L78 Accepts]: Start accepts. Automaton has 76759 states and 446504 transitions. Word has length 9 [2020-10-16 12:45:34,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:45:34,996 INFO L481 AbstractCegarLoop]: Abstraction has 76759 states and 446504 transitions. [2020-10-16 12:45:34,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:45:34,996 INFO L276 IsEmpty]: Start isEmpty. Operand 76759 states and 446504 transitions. [2020-10-16 12:45:34,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:45:34,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:45:34,996 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:45:34,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-16 12:45:34,997 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:45:34,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:45:34,997 INFO L82 PathProgramCache]: Analyzing trace with hash -242609250, now seen corresponding path program 1 times [2020-10-16 12:45:34,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:45:34,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286367983] [2020-10-16 12:45:34,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:45:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:45:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:45:35,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286367983] [2020-10-16 12:45:35,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:45:35,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:45:35,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [8251302] [2020-10-16 12:45:35,030 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:45:35,031 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:45:35,031 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-16 12:45:35,031 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:45:35,031 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:45:35,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:45:35,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:45:35,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:45:35,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:45:35,032 INFO L87 Difference]: Start difference. First operand 76759 states and 446504 transitions. Second operand 4 states. [2020-10-16 12:45:35,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:45:35,516 INFO L93 Difference]: Finished difference Result 61421 states and 354199 transitions. [2020-10-16 12:45:36,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:45:36,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 12:45:36,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:45:36,880 INFO L225 Difference]: With dead ends: 61421 [2020-10-16 12:45:36,880 INFO L226 Difference]: Without dead ends: 61421 [2020-10-16 12:45:36,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:45:40,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61421 states. [2020-10-16 12:45:46,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61421 to 46083. [2020-10-16 12:45:46,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46083 states. [2020-10-16 12:45:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46083 states to 46083 states and 261894 transitions. [2020-10-16 12:45:46,373 INFO L78 Accepts]: Start accepts. Automaton has 46083 states and 261894 transitions. Word has length 9 [2020-10-16 12:45:46,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:45:46,373 INFO L481 AbstractCegarLoop]: Abstraction has 46083 states and 261894 transitions. [2020-10-16 12:45:46,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:45:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 46083 states and 261894 transitions. [2020-10-16 12:45:46,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:45:46,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:45:46,374 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 12:45:46,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-16 12:45:46,374 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:45:46,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:45:46,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1404864702, now seen corresponding path program 1 times [2020-10-16 12:45:46,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:45:46,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949784506] [2020-10-16 12:45:46,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:45:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:45:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 12:45:46,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949784506] [2020-10-16 12:45:46,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:45:46,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:45:46,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1597872865] [2020-10-16 12:45:46,391 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:45:46,391 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:45:46,392 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-16 12:45:46,392 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:45:46,392 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:45:46,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:45:46,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:45:46,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:45:46,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:45:46,393 INFO L87 Difference]: Start difference. First operand 46083 states and 261894 transitions. Second operand 3 states. [2020-10-16 12:45:47,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:45:47,502 INFO L93 Difference]: Finished difference Result 69057 states and 386770 transitions. [2020-10-16 12:45:47,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:45:47,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 12:45:47,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:45:47,773 INFO L225 Difference]: With dead ends: 69057 [2020-10-16 12:45:47,773 INFO L226 Difference]: Without dead ends: 69057 [2020-10-16 12:45:47,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:45:54,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69057 states. [2020-10-16 12:45:55,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69057 to 57562. [2020-10-16 12:45:55,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57562 states. [2020-10-16 12:45:56,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57562 states to 57562 states and 330031 transitions. [2020-10-16 12:45:56,022 INFO L78 Accepts]: Start accepts. Automaton has 57562 states and 330031 transitions. Word has length 11 [2020-10-16 12:45:56,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:45:56,022 INFO L481 AbstractCegarLoop]: Abstraction has 57562 states and 330031 transitions. [2020-10-16 12:45:56,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:45:56,022 INFO L276 IsEmpty]: Start isEmpty. Operand 57562 states and 330031 transitions. [2020-10-16 12:45:56,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:45:56,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:45:56,023 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:45:56,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-16 12:45:56,024 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:45:56,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:45:56,024 INFO L82 PathProgramCache]: Analyzing trace with hash -601130141, now seen corresponding path program 1 times [2020-10-16 12:45:56,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:45:56,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255170290] [2020-10-16 12:45:56,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:45:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:45:56,045 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 12:45:56,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255170290] [2020-10-16 12:45:56,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:45:56,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:45:56,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [143777264] [2020-10-16 12:45:56,046 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:45:56,047 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:45:56,048 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-16 12:45:56,048 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:45:56,049 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:45:56,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:45:56,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:45:56,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:45:56,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:45:56,050 INFO L87 Difference]: Start difference. First operand 57562 states and 330031 transitions. Second operand 4 states. [2020-10-16 12:45:56,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:45:56,392 INFO L93 Difference]: Finished difference Result 46067 states and 261797 transitions. [2020-10-16 12:45:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:45:56,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 12:45:56,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:45:56,568 INFO L225 Difference]: With dead ends: 46067 [2020-10-16 12:45:56,568 INFO L226 Difference]: Without dead ends: 46067 [2020-10-16 12:45:56,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:45:59,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46067 states. [2020-10-16 12:46:00,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46067 to 34572. [2020-10-16 12:46:00,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34572 states. [2020-10-16 12:46:00,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34572 states to 34572 states and 193563 transitions. [2020-10-16 12:46:00,762 INFO L78 Accepts]: Start accepts. Automaton has 34572 states and 193563 transitions. Word has length 12 [2020-10-16 12:46:00,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:46:00,762 INFO L481 AbstractCegarLoop]: Abstraction has 34572 states and 193563 transitions. [2020-10-16 12:46:00,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:46:00,762 INFO L276 IsEmpty]: Start isEmpty. Operand 34572 states and 193563 transitions. [2020-10-16 12:46:00,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:46:00,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:46:00,763 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:46:00,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-16 12:46:00,763 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:46:00,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:46:00,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1950756351, now seen corresponding path program 1 times [2020-10-16 12:46:00,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:46:00,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007620693] [2020-10-16 12:46:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:46:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:46:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 12:46:00,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007620693] [2020-10-16 12:46:00,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:46:00,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:46:00,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1567271352] [2020-10-16 12:46:00,782 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:46:00,783 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:46:00,784 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2020-10-16 12:46:00,784 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:46:00,784 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:46:00,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:46:00,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:46:00,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:46:00,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:46:00,785 INFO L87 Difference]: Start difference. First operand 34572 states and 193563 transitions. Second operand 3 states. [2020-10-16 12:46:01,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:46:01,413 INFO L93 Difference]: Finished difference Result 51759 states and 285634 transitions. [2020-10-16 12:46:01,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:46:01,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-16 12:46:01,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:46:02,759 INFO L225 Difference]: With dead ends: 51759 [2020-10-16 12:46:02,760 INFO L226 Difference]: Without dead ends: 51759 [2020-10-16 12:46:02,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:46:05,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51759 states. [2020-10-16 12:46:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51759 to 43159. [2020-10-16 12:46:06,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43159 states. [2020-10-16 12:46:06,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43159 states to 43159 states and 243856 transitions. [2020-10-16 12:46:06,421 INFO L78 Accepts]: Start accepts. Automaton has 43159 states and 243856 transitions. Word has length 14 [2020-10-16 12:46:06,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:46:06,421 INFO L481 AbstractCegarLoop]: Abstraction has 43159 states and 243856 transitions. [2020-10-16 12:46:06,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:46:06,421 INFO L276 IsEmpty]: Start isEmpty. Operand 43159 states and 243856 transitions. [2020-10-16 12:46:06,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:46:06,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:46:06,422 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:46:06,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-16 12:46:06,422 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:46:06,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:46:06,423 INFO L82 PathProgramCache]: Analyzing trace with hash 343906870, now seen corresponding path program 1 times [2020-10-16 12:46:06,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:46:06,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596971993] [2020-10-16 12:46:06,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:46:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:46:06,451 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 12:46:06,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596971993] [2020-10-16 12:46:06,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:46:06,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:46:06,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [134082007] [2020-10-16 12:46:06,453 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:46:06,454 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:46:06,455 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 22 transitions. [2020-10-16 12:46:06,455 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:46:06,456 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:46:06,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:46:06,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:46:06,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:46:06,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:46:06,456 INFO L87 Difference]: Start difference. First operand 43159 states and 243856 transitions. Second operand 4 states. [2020-10-16 12:46:07,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:46:07,141 INFO L93 Difference]: Finished difference Result 34559 states and 193478 transitions. [2020-10-16 12:46:07,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:46:07,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-16 12:46:07,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:46:07,270 INFO L225 Difference]: With dead ends: 34559 [2020-10-16 12:46:07,270 INFO L226 Difference]: Without dead ends: 34559 [2020-10-16 12:46:07,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:46:08,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34559 states. [2020-10-16 12:46:11,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34559 to 25959. [2020-10-16 12:46:11,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25959 states. [2020-10-16 12:46:11,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25959 states to 25959 states and 143100 transitions. [2020-10-16 12:46:11,914 INFO L78 Accepts]: Start accepts. Automaton has 25959 states and 143100 transitions. Word has length 15 [2020-10-16 12:46:11,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:46:11,914 INFO L481 AbstractCegarLoop]: Abstraction has 25959 states and 143100 transitions. [2020-10-16 12:46:11,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:46:11,914 INFO L276 IsEmpty]: Start isEmpty. Operand 25959 states and 143100 transitions. [2020-10-16 12:46:11,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:46:11,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:46:11,915 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:46:11,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-16 12:46:11,915 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:46:11,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:46:11,916 INFO L82 PathProgramCache]: Analyzing trace with hash -408592942, now seen corresponding path program 1 times [2020-10-16 12:46:11,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:46:11,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831158916] [2020-10-16 12:46:11,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:46:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:46:11,938 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-16 12:46:11,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831158916] [2020-10-16 12:46:11,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:46:11,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:46:11,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [478538135] [2020-10-16 12:46:11,939 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:46:11,940 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:46:11,942 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-16 12:46:11,942 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:46:11,942 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:46:11,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:46:11,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:46:11,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:46:11,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:46:11,943 INFO L87 Difference]: Start difference. First operand 25959 states and 143100 transitions. Second operand 3 states. [2020-10-16 12:46:12,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:46:12,456 INFO L93 Difference]: Finished difference Result 38727 states and 210643 transitions. [2020-10-16 12:46:12,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:46:12,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 12:46:12,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:46:12,684 INFO L225 Difference]: With dead ends: 38727 [2020-10-16 12:46:12,684 INFO L226 Difference]: Without dead ends: 38727 [2020-10-16 12:46:12,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:46:13,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38727 states. [2020-10-16 12:46:14,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38727 to 32338. [2020-10-16 12:46:14,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32338 states. [2020-10-16 12:46:14,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32338 states to 32338 states and 180031 transitions. [2020-10-16 12:46:14,991 INFO L78 Accepts]: Start accepts. Automaton has 32338 states and 180031 transitions. Word has length 17 [2020-10-16 12:46:14,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:46:14,991 INFO L481 AbstractCegarLoop]: Abstraction has 32338 states and 180031 transitions. [2020-10-16 12:46:14,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:46:14,991 INFO L276 IsEmpty]: Start isEmpty. Operand 32338 states and 180031 transitions. [2020-10-16 12:46:14,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 12:46:14,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:46:14,992 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:46:14,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-16 12:46:14,993 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:46:14,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:46:14,993 INFO L82 PathProgramCache]: Analyzing trace with hash 218524327, now seen corresponding path program 1 times [2020-10-16 12:46:14,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:46:14,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945281927] [2020-10-16 12:46:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:46:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:46:15,012 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-16 12:46:15,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945281927] [2020-10-16 12:46:15,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:46:15,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:46:15,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [115268393] [2020-10-16 12:46:15,014 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:46:15,015 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:46:15,017 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 25 transitions. [2020-10-16 12:46:15,017 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:46:15,018 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:46:15,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:46:15,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:46:15,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:46:15,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:46:15,018 INFO L87 Difference]: Start difference. First operand 32338 states and 180031 transitions. Second operand 4 states. [2020-10-16 12:46:15,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:46:15,231 INFO L93 Difference]: Finished difference Result 25949 states and 143030 transitions. [2020-10-16 12:46:15,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:46:15,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-16 12:46:15,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:46:15,323 INFO L225 Difference]: With dead ends: 25949 [2020-10-16 12:46:15,323 INFO L226 Difference]: Without dead ends: 25949 [2020-10-16 12:46:15,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:46:16,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25949 states. [2020-10-16 12:46:16,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25949 to 19560. [2020-10-16 12:46:16,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19560 states. [2020-10-16 12:46:17,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19560 states to 19560 states and 106029 transitions. [2020-10-16 12:46:17,035 INFO L78 Accepts]: Start accepts. Automaton has 19560 states and 106029 transitions. Word has length 18 [2020-10-16 12:46:17,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:46:17,035 INFO L481 AbstractCegarLoop]: Abstraction has 19560 states and 106029 transitions. [2020-10-16 12:46:17,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:46:17,035 INFO L276 IsEmpty]: Start isEmpty. Operand 19560 states and 106029 transitions. [2020-10-16 12:46:17,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:46:17,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:46:17,037 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:46:17,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-16 12:46:17,038 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:46:17,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:46:17,038 INFO L82 PathProgramCache]: Analyzing trace with hash -640482004, now seen corresponding path program 1 times [2020-10-16 12:46:17,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:46:17,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699483964] [2020-10-16 12:46:17,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:46:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:46:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-16 12:46:17,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699483964] [2020-10-16 12:46:17,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:46:17,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:46:17,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [57180640] [2020-10-16 12:46:17,058 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:46:17,059 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:46:17,061 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 20 transitions. [2020-10-16 12:46:17,061 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:46:17,062 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:46:17,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:46:17,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:46:17,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:46:17,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:46:17,062 INFO L87 Difference]: Start difference. First operand 19560 states and 106029 transitions. Second operand 3 states. [2020-10-16 12:46:17,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:46:17,268 INFO L93 Difference]: Finished difference Result 28773 states and 154399 transitions. [2020-10-16 12:46:17,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:46:17,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-16 12:46:17,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:46:17,366 INFO L225 Difference]: With dead ends: 28773 [2020-10-16 12:46:17,367 INFO L226 Difference]: Without dead ends: 28773 [2020-10-16 12:46:17,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:46:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28773 states. [2020-10-16 12:46:18,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28773 to 24163. [2020-10-16 12:46:18,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24163 states. [2020-10-16 12:46:19,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24163 states to 24163 states and 132493 transitions. [2020-10-16 12:46:19,086 INFO L78 Accepts]: Start accepts. Automaton has 24163 states and 132493 transitions. Word has length 20 [2020-10-16 12:46:19,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:46:19,086 INFO L481 AbstractCegarLoop]: Abstraction has 24163 states and 132493 transitions. [2020-10-16 12:46:19,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:46:19,086 INFO L276 IsEmpty]: Start isEmpty. Operand 24163 states and 132493 transitions. [2020-10-16 12:46:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 12:46:19,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:46:19,089 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:46:19,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-16 12:46:19,089 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:46:19,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:46:19,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1619896945, now seen corresponding path program 1 times [2020-10-16 12:46:19,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:46:19,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358414162] [2020-10-16 12:46:19,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:46:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:46:19,118 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-16 12:46:19,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358414162] [2020-10-16 12:46:19,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:46:19,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:46:19,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [704780843] [2020-10-16 12:46:19,120 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:46:19,121 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:46:19,124 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 28 transitions. [2020-10-16 12:46:19,124 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:46:19,125 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:46:19,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:46:19,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:46:19,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:46:19,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:46:19,126 INFO L87 Difference]: Start difference. First operand 24163 states and 132493 transitions. Second operand 4 states. [2020-10-16 12:46:19,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:46:19,350 INFO L93 Difference]: Finished difference Result 19553 states and 105977 transitions. [2020-10-16 12:46:19,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:46:19,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-16 12:46:19,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:46:19,414 INFO L225 Difference]: With dead ends: 19553 [2020-10-16 12:46:19,414 INFO L226 Difference]: Without dead ends: 19553 [2020-10-16 12:46:19,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:46:19,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19553 states. [2020-10-16 12:46:20,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19553 to 14943. [2020-10-16 12:46:20,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14943 states. [2020-10-16 12:46:20,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14943 states to 14943 states and 79461 transitions. [2020-10-16 12:46:20,267 INFO L78 Accepts]: Start accepts. Automaton has 14943 states and 79461 transitions. Word has length 21 [2020-10-16 12:46:20,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:46:20,267 INFO L481 AbstractCegarLoop]: Abstraction has 14943 states and 79461 transitions. [2020-10-16 12:46:20,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:46:20,267 INFO L276 IsEmpty]: Start isEmpty. Operand 14943 states and 79461 transitions. [2020-10-16 12:46:20,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-16 12:46:20,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:46:20,271 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:46:20,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-16 12:46:20,272 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:46:20,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:46:20,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1741862694, now seen corresponding path program 1 times [2020-10-16 12:46:20,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:46:20,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436183536] [2020-10-16 12:46:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:46:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:46:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-16 12:46:20,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436183536] [2020-10-16 12:46:20,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:46:20,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:46:20,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [164448176] [2020-10-16 12:46:20,287 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:46:20,289 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:46:20,291 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-16 12:46:20,291 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:46:20,292 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:46:20,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:46:20,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:46:20,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:46:20,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:46:20,293 INFO L87 Difference]: Start difference. First operand 14943 states and 79461 transitions. Second operand 3 states. [2020-10-16 12:46:20,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:46:20,443 INFO L93 Difference]: Finished difference Result 20763 states and 109990 transitions. [2020-10-16 12:46:20,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:46:20,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-16 12:46:20,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:46:20,509 INFO L225 Difference]: With dead ends: 20763 [2020-10-16 12:46:20,509 INFO L226 Difference]: Without dead ends: 20763 [2020-10-16 12:46:20,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:46:21,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20763 states. [2020-10-16 12:46:21,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20763 to 17851. [2020-10-16 12:46:21,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17851 states. [2020-10-16 12:46:21,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17851 states to 17851 states and 96166 transitions. [2020-10-16 12:46:21,659 INFO L78 Accepts]: Start accepts. Automaton has 17851 states and 96166 transitions. Word has length 23 [2020-10-16 12:46:21,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:46:21,660 INFO L481 AbstractCegarLoop]: Abstraction has 17851 states and 96166 transitions. [2020-10-16 12:46:21,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:46:21,660 INFO L276 IsEmpty]: Start isEmpty. Operand 17851 states and 96166 transitions. [2020-10-16 12:46:21,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-16 12:46:21,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:46:21,666 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:46:21,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-16 12:46:21,666 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:46:21,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:46:21,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1837019004, now seen corresponding path program 1 times [2020-10-16 12:46:21,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:46:21,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909943655] [2020-10-16 12:46:21,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:46:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:46:21,674 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:46:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:46:21,679 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:46:21,686 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:46:21,686 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:46:21,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-16 12:46:21,687 WARN L371 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 12:46:21,687 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2020-10-16 12:46:21,697 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,697 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,697 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,698 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,698 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,698 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,698 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,698 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,698 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,699 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,699 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,699 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,699 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,699 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,699 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,699 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,700 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,700 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,700 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,701 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,701 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,701 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,701 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,701 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,701 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,701 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,702 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,702 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,702 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,702 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,702 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,702 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,702 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,703 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,703 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,703 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,703 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,703 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,703 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,703 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,704 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,704 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,704 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,704 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,704 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,704 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,704 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,705 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,705 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,705 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,705 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,705 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,706 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,706 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,707 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,707 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,707 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,707 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,707 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,707 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,708 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,708 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,708 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,709 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,709 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,709 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,709 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,709 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,709 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,709 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,710 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,710 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,710 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,710 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,711 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,711 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,711 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,711 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,711 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,711 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,712 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,712 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,712 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,712 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,712 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,712 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,712 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,713 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,713 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,713 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,713 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,713 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,713 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,714 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,722 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:46:21,735 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:46:21,735 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-16 12:46:21,735 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:46:21,735 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:46:21,735 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:46:21,736 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:46:21,736 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:46:21,736 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:46:21,736 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:46:21,736 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:46:21,737 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:46:21,737 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 124 transitions, 344 flow [2020-10-16 12:46:21,737 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 124 transitions, 344 flow [2020-10-16 12:46:21,738 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 132 places, 124 transitions, 344 flow [2020-10-16 12:46:21,763 INFO L129 PetriNetUnfolder]: 17/195 cut-off events. [2020-10-16 12:46:21,764 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2020-10-16 12:46:21,766 INFO L80 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 195 events. 17/195 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 596 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 214. Up to 18 conditions per place. [2020-10-16 12:46:21,778 INFO L117 LiptonReduction]: Number of co-enabled transitions 10656 [2020-10-16 12:46:22,833 INFO L132 LiptonReduction]: Checked pairs total: 18295 [2020-10-16 12:46:22,833 INFO L134 LiptonReduction]: Total number of compositions: 113 [2020-10-16 12:46:22,834 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 38 transitions, 172 flow Received shutdown request... [2020-10-16 12:47:02,792 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 12:47:02,795 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 12:47:02,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:47:02 BasicIcfg [2020-10-16 12:47:02,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:47:02,797 INFO L168 Benchmark]: Toolchain (without parser) took 222978.46 ms. Allocated memory was 139.5 MB in the beginning and 3.5 GB in the end (delta: 3.3 GB). Free memory was 100.9 MB in the beginning and 1.0 GB in the end (delta: -933.6 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2020-10-16 12:47:02,798 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 12:47:02,798 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.18 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 161.1 MB in the end (delta: -60.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:47:02,799 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.23 ms. Allocated memory is still 202.9 MB. Free memory was 161.1 MB in the beginning and 159.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:47:02,799 INFO L168 Benchmark]: Boogie Preprocessor took 26.87 ms. Allocated memory is still 202.9 MB. Free memory was 159.1 MB in the beginning and 157.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:47:02,800 INFO L168 Benchmark]: RCFGBuilder took 327.83 ms. Allocated memory is still 202.9 MB. Free memory was 157.7 MB in the beginning and 141.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:47:02,801 INFO L168 Benchmark]: TraceAbstraction took 221922.40 ms. Allocated memory was 202.9 MB in the beginning and 3.5 GB in the end (delta: 3.3 GB). Free memory was 141.0 MB in the beginning and 1.0 GB in the end (delta: -893.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2020-10-16 12:47:02,803 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 651.18 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 161.1 MB in the end (delta: -60.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.23 ms. Allocated memory is still 202.9 MB. Free memory was 161.1 MB in the beginning and 159.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.87 ms. Allocated memory is still 202.9 MB. Free memory was 159.1 MB in the beginning and 157.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 327.83 ms. Allocated memory is still 202.9 MB. Free memory was 157.7 MB in the beginning and 141.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221922.40 ms. Allocated memory was 202.9 MB in the beginning and 3.5 GB in the end (delta: 3.3 GB). Free memory was 141.0 MB in the beginning and 1.0 GB in the end (delta: -893.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 124 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 2 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.6s, 34 PlacesBefore, 11 PlacesAfterwards, 33 TransitionsBefore, 8 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 4 FixpointIterations, 9 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 32 TotalNumberOfCompositions, 209 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 468 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 29 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.5s, 48 PlacesBefore, 18 PlacesAfterwards, 46 TransitionsBefore, 13 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 4 FixpointIterations, 9 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 40 TotalNumberOfCompositions, 1268 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 976 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 42 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.5s, 62 PlacesBefore, 24 PlacesAfterwards, 59 TransitionsBefore, 17 TransitionsAfterwards, 1656 CoEnabledTransitionPairs, 4 FixpointIterations, 9 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 52 TotalNumberOfCompositions, 2526 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1605 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 73 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.7s, 76 PlacesBefore, 30 PlacesAfterwards, 72 TransitionsBefore, 23 TransitionsAfterwards, 2832 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 3 ChoiceCompositions, 66 TotalNumberOfCompositions, 5340 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2515 VarBasedMoverChecksPositive, 58 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 96 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.8s, 90 PlacesBefore, 36 PlacesAfterwards, 85 TransitionsBefore, 28 TransitionsAfterwards, 4320 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 3 ChoiceCompositions, 79 TotalNumberOfCompositions, 8086 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 3552 VarBasedMoverChecksPositive, 71 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 175 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.9s, 104 PlacesBefore, 42 PlacesAfterwards, 98 TransitionsBefore, 33 TransitionsAfterwards, 6120 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 3 ChoiceCompositions, 92 TotalNumberOfCompositions, 12685 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 4714 VarBasedMoverChecksPositive, 73 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 143 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 118 PlacesBefore, 48 PlacesAfterwards, 111 TransitionsBefore, 34 TransitionsAfterwards, 8232 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 7 ChoiceCompositions, 102 TotalNumberOfCompositions, 15415 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 6418 VarBasedMoverChecksPositive, 83 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 254 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 132 PlacesBefore, 54 PlacesAfterwards, 124 TransitionsBefore, 38 TransitionsAfterwards, 10656 CoEnabledTransitionPairs, 4 FixpointIterations, 9 TrivialSequentialCompositions, 66 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 30 ConcurrentYvCompositions, 8 ChoiceCompositions, 113 TotalNumberOfCompositions, 18295 MoverChecksTotal - TimeoutResultAtElement [Line: 680]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 680). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 54 places, 38 transitions, 172 flow. Already constructed 142350 states. Currently 38015 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 1 error locations. Started 8 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 221.5s, OverallIterations: 59, TraceHistogramMax: 8, AutomataDifference: 29.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 91.2s, HoareTripleCheckerStatistics: 1566 SDtfs, 1042 SDslu, 824 SDs, 0 SdLazy, 1192 SolverSat, 129 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 193 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122716occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 98.1s AutomataMinimizationTime, 52 MinimizatonAttempts, 192156 StatesRemovedByMinimization, 51 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 555 ConstructedInterpolants, 0 QuantifiedInterpolants, 8977 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 52 InterpolantComputations, 52 PerfectInterpolantSequences, 582/582 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