/usr/bin/java -Xmx16000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/13_unverif.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 13:40:21,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 13:40:21,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 13:40:21,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 13:40:21,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 13:40:21,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 13:40:21,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 13:40:21,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 13:40:21,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 13:40:21,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 13:40:21,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 13:40:21,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 13:40:21,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 13:40:21,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 13:40:21,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 13:40:21,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 13:40:21,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 13:40:21,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 13:40:21,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 13:40:21,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 13:40:21,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 13:40:21,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 13:40:21,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 13:40:21,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 13:40:21,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 13:40:21,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 13:40:21,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 13:40:21,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 13:40:21,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 13:40:21,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 13:40:21,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 13:40:21,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 13:40:21,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 13:40:21,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 13:40:21,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 13:40:21,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 13:40:21,580 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 13:40:21,627 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 13:40:21,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 13:40:21,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 13:40:21,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 13:40:21,631 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 13:40:21,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 13:40:21,632 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 13:40:21,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 13:40:21,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 13:40:21,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 13:40:21,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 13:40:21,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 13:40:21,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 13:40:21,634 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 13:40:21,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 13:40:21,634 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 13:40:21,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 13:40:21,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 13:40:21,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 13:40:21,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 13:40:21,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 13:40:21,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 13:40:21,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 13:40:21,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 13:40:21,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 13:40:21,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 13:40:21,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 13:40:21,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 13:40:21,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 13:40:21,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 13:40:21,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 13:40:21,937 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 13:40:21,940 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 13:40:21,942 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 13:40:21,942 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 13:40:21,943 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/13_unverif.i [2020-10-11 13:40:21,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f24b47f1/f7686260765c4a83a973785a03949c03/FLAGf7dd6c843 [2020-10-11 13:40:22,464 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 13:40:22,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/13_unverif.i [2020-10-11 13:40:22,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f24b47f1/f7686260765c4a83a973785a03949c03/FLAGf7dd6c843 [2020-10-11 13:40:22,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f24b47f1/f7686260765c4a83a973785a03949c03 [2020-10-11 13:40:22,770 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 13:40:22,771 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 13:40:22,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 13:40:22,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 13:40:22,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 13:40:22,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:40:22" (1/1) ... [2020-10-11 13:40:22,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58adc394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:40:22, skipping insertion in model container [2020-10-11 13:40:22,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:40:22" (1/1) ... [2020-10-11 13:40:22,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 13:40:22,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 13:40:23,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 13:40:23,329 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 13:40:23,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 13:40:23,439 INFO L208 MainTranslator]: Completed translation [2020-10-11 13:40:23,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:40:23 WrapperNode [2020-10-11 13:40:23,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 13:40:23,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 13:40:23,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 13:40:23,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 13:40:23,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:40:23" (1/1) ... [2020-10-11 13:40:23,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:40:23" (1/1) ... [2020-10-11 13:40:23,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 13:40:23,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 13:40:23,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 13:40:23,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 13:40:23,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:40:23" (1/1) ... [2020-10-11 13:40:23,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:40:23" (1/1) ... [2020-10-11 13:40:23,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:40:23" (1/1) ... [2020-10-11 13:40:23,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:40:23" (1/1) ... [2020-10-11 13:40:23,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:40:23" (1/1) ... [2020-10-11 13:40:23,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:40:23" (1/1) ... [2020-10-11 13:40:23,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:40:23" (1/1) ... [2020-10-11 13:40:23,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 13:40:23,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 13:40:23,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 13:40:23,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 13:40:23,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:40:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 13:40:23,584 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-11 13:40:23,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-11 13:40:23,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 13:40:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 13:40:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 13:40:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 13:40:23,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 13:40:23,587 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 13:40:23,988 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 13:40:23,988 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-11 13:40:23,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:40:23 BoogieIcfgContainer [2020-10-11 13:40:23,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 13:40:23,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 13:40:23,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 13:40:23,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 13:40:23,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 01:40:22" (1/3) ... [2020-10-11 13:40:24,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbeed86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:40:23, skipping insertion in model container [2020-10-11 13:40:24,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:40:23" (2/3) ... [2020-10-11 13:40:24,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbeed86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:40:24, skipping insertion in model container [2020-10-11 13:40:24,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:40:23" (3/3) ... [2020-10-11 13:40:24,005 INFO L111 eAbstractionObserver]: Analyzing ICFG 13_unverif.i [2020-10-11 13:40:24,019 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 13:40:24,020 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 13:40:24,030 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 13:40:24,031 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 13:40:24,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,059 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,060 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,061 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,064 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,070 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,070 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,070 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:24,092 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-11 13:40:24,114 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 13:40:24,115 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 13:40:24,115 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 13:40:24,115 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 13:40:24,115 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 13:40:24,116 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 13:40:24,116 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 13:40:24,116 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 13:40:24,129 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 13:40:24,132 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 32 transitions, 69 flow [2020-10-11 13:40:24,135 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 32 transitions, 69 flow [2020-10-11 13:40:24,137 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 32 places, 32 transitions, 69 flow [2020-10-11 13:40:24,185 INFO L129 PetriNetUnfolder]: 4/40 cut-off events. [2020-10-11 13:40:24,185 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 13:40:24,191 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 40 events. 4/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 22. Up to 4 conditions per place. [2020-10-11 13:40:24,193 INFO L117 LiptonReduction]: Number of co-enabled transitions 260 [2020-10-11 13:40:25,170 INFO L132 LiptonReduction]: Checked pairs total: 259 [2020-10-11 13:40:25,171 INFO L134 LiptonReduction]: Total number of compositions: 30 [2020-10-11 13:40:25,178 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 12 places, 10 transitions, 25 flow [2020-10-11 13:40:25,187 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 24 states. [2020-10-11 13:40:25,189 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-11 13:40:25,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-11 13:40:25,195 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:25,196 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-11 13:40:25,196 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 13:40:25,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:25,201 INFO L82 PathProgramCache]: Analyzing trace with hash 168321027, now seen corresponding path program 1 times [2020-10-11 13:40:25,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:25,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988189667] [2020-10-11 13:40:25,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:40:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:40:25,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988189667] [2020-10-11 13:40:25,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:40:25,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 13:40:25,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270332564] [2020-10-11 13:40:25,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 13:40:25,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:40:25,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 13:40:25,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:40:25,466 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-10-11 13:40:25,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:40:25,510 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2020-10-11 13:40:25,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 13:40:25,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-10-11 13:40:25,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:40:25,522 INFO L225 Difference]: With dead ends: 23 [2020-10-11 13:40:25,522 INFO L226 Difference]: Without dead ends: 23 [2020-10-11 13:40:25,523 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:40:25,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-11 13:40:25,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-11 13:40:25,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-11 13:40:25,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2020-10-11 13:40:25,560 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 5 [2020-10-11 13:40:25,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:40:25,561 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2020-10-11 13:40:25,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 13:40:25,561 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2020-10-11 13:40:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-11 13:40:25,562 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:25,562 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-11 13:40:25,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 13:40:25,562 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 13:40:25,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:25,563 INFO L82 PathProgramCache]: Analyzing trace with hash 922984961, now seen corresponding path program 1 times [2020-10-11 13:40:25,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:25,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128478460] [2020-10-11 13:40:25,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:40:25,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:40:25,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128478460] [2020-10-11 13:40:25,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:40:25,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 13:40:25,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597492938] [2020-10-11 13:40:25,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:40:25,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:40:25,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:40:25,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:40:25,681 INFO L87 Difference]: Start difference. First operand 23 states and 38 transitions. Second operand 3 states. [2020-10-11 13:40:25,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:40:25,702 INFO L93 Difference]: Finished difference Result 19 states and 31 transitions. [2020-10-11 13:40:25,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:40:25,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-11 13:40:25,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:40:25,704 INFO L225 Difference]: With dead ends: 19 [2020-10-11 13:40:25,704 INFO L226 Difference]: Without dead ends: 19 [2020-10-11 13:40:25,705 INFO L673 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 [2020-10-11 13:40:25,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-11 13:40:25,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2020-10-11 13:40:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-11 13:40:25,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2020-10-11 13:40:25,709 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 6 [2020-10-11 13:40:25,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:40:25,709 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2020-10-11 13:40:25,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:40:25,709 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2020-10-11 13:40:25,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-11 13:40:25,710 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:25,710 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-11 13:40:25,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 13:40:25,711 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 13:40:25,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:25,711 INFO L82 PathProgramCache]: Analyzing trace with hash 922916027, now seen corresponding path program 1 times [2020-10-11 13:40:25,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:25,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749801535] [2020-10-11 13:40:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 13:40:25,731 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 13:40:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 13:40:25,739 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 13:40:25,760 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 13:40:25,761 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 13:40:25,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 13:40:25,762 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 13:40:25,763 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-11 13:40:25,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,772 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,772 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,772 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,773 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,773 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,774 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,774 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,774 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,775 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,776 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,776 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,776 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,780 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,780 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,780 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,780 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,781 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,781 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,781 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:25,783 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 13:40:25,783 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 13:40:25,783 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 13:40:25,783 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 13:40:25,784 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 13:40:25,784 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 13:40:25,784 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 13:40:25,784 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 13:40:25,784 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 13:40:25,787 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 13:40:25,787 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 46 transitions, 104 flow [2020-10-11 13:40:25,787 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 46 transitions, 104 flow [2020-10-11 13:40:25,787 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 46 places, 46 transitions, 104 flow [2020-10-11 13:40:25,802 INFO L129 PetriNetUnfolder]: 7/63 cut-off events. [2020-10-11 13:40:25,802 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-11 13:40:25,803 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 63 events. 7/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 138 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 6 conditions per place. [2020-10-11 13:40:25,805 INFO L117 LiptonReduction]: Number of co-enabled transitions 884 [2020-10-11 13:40:26,466 INFO L132 LiptonReduction]: Checked pairs total: 1787 [2020-10-11 13:40:26,466 INFO L134 LiptonReduction]: Total number of compositions: 32 [2020-10-11 13:40:26,467 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 21 transitions, 54 flow [2020-10-11 13:40:26,478 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 208 states. [2020-10-11 13:40:26,478 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2020-10-11 13:40:26,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-11 13:40:26,480 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:26,480 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:40:26,480 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:40:26,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:26,481 INFO L82 PathProgramCache]: Analyzing trace with hash 596115587, now seen corresponding path program 1 times [2020-10-11 13:40:26,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:26,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630100549] [2020-10-11 13:40:26,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:40:26,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:40:26,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630100549] [2020-10-11 13:40:26,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:40:26,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:40:26,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560049386] [2020-10-11 13:40:26,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 13:40:26,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:40:26,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 13:40:26,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:40:26,555 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 5 states. [2020-10-11 13:40:26,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:40:26,611 INFO L93 Difference]: Finished difference Result 251 states and 667 transitions. [2020-10-11 13:40:26,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 13:40:26,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-11 13:40:26,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:40:26,619 INFO L225 Difference]: With dead ends: 251 [2020-10-11 13:40:26,620 INFO L226 Difference]: Without dead ends: 251 [2020-10-11 13:40:26,620 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:40:26,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-11 13:40:26,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 211. [2020-10-11 13:40:26,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-11 13:40:26,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 561 transitions. [2020-10-11 13:40:26,661 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 561 transitions. Word has length 7 [2020-10-11 13:40:26,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:40:26,661 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 561 transitions. [2020-10-11 13:40:26,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 13:40:26,662 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 561 transitions. [2020-10-11 13:40:26,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 13:40:26,663 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:26,663 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-10-11 13:40:26,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 13:40:26,664 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:40:26,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:26,667 INFO L82 PathProgramCache]: Analyzing trace with hash -690616091, now seen corresponding path program 1 times [2020-10-11 13:40:26,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:26,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021367620] [2020-10-11 13:40:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 13:40:26,691 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 13:40:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 13:40:26,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 13:40:26,718 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 13:40:26,720 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 13:40:26,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 13:40:26,721 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 13:40:26,722 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-11 13:40:26,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,750 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,751 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,751 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,752 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,755 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,755 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,755 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,755 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,761 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,761 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,762 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,763 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,763 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,764 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,764 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:26,766 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-11 13:40:26,766 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 13:40:26,766 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 13:40:26,766 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 13:40:26,766 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 13:40:26,766 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 13:40:26,767 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 13:40:26,767 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 13:40:26,767 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 13:40:26,768 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 13:40:26,768 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 60 transitions, 141 flow [2020-10-11 13:40:26,769 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 60 transitions, 141 flow [2020-10-11 13:40:26,769 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 60 transitions, 141 flow [2020-10-11 13:40:26,785 INFO L129 PetriNetUnfolder]: 10/86 cut-off events. [2020-10-11 13:40:26,786 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-11 13:40:26,787 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 86 events. 10/86 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 223 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-10-11 13:40:26,789 INFO L117 LiptonReduction]: Number of co-enabled transitions 1872 [2020-10-11 13:40:27,589 INFO L132 LiptonReduction]: Checked pairs total: 4048 [2020-10-11 13:40:27,590 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-11 13:40:27,590 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 27 transitions, 75 flow [2020-10-11 13:40:27,648 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1252 states. [2020-10-11 13:40:27,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states. [2020-10-11 13:40:27,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-11 13:40:27,650 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:27,650 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:40:27,650 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:40:27,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:27,650 INFO L82 PathProgramCache]: Analyzing trace with hash -34022085, now seen corresponding path program 1 times [2020-10-11 13:40:27,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:27,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320533161] [2020-10-11 13:40:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:40:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:40:27,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320533161] [2020-10-11 13:40:27,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:40:27,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:40:27,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801456366] [2020-10-11 13:40:27,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 13:40:27,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:40:27,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 13:40:27,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:40:27,724 INFO L87 Difference]: Start difference. First operand 1252 states. Second operand 5 states. [2020-10-11 13:40:27,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:40:27,822 INFO L93 Difference]: Finished difference Result 1547 states and 5625 transitions. [2020-10-11 13:40:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 13:40:27,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-11 13:40:27,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:40:27,839 INFO L225 Difference]: With dead ends: 1547 [2020-10-11 13:40:27,839 INFO L226 Difference]: Without dead ends: 1547 [2020-10-11 13:40:27,840 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:40:27,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2020-10-11 13:40:27,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1213. [2020-10-11 13:40:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-10-11 13:40:27,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 4426 transitions. [2020-10-11 13:40:27,957 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 4426 transitions. Word has length 7 [2020-10-11 13:40:27,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:40:27,957 INFO L481 AbstractCegarLoop]: Abstraction has 1213 states and 4426 transitions. [2020-10-11 13:40:27,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 13:40:27,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 4426 transitions. [2020-10-11 13:40:27,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 13:40:27,958 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:27,959 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:40:27,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 13:40:27,959 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:40:27,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:27,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1664535642, now seen corresponding path program 1 times [2020-10-11 13:40:27,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:27,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254963568] [2020-10-11 13:40:27,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:40:28,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:40:28,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254963568] [2020-10-11 13:40:28,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:40:28,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:40:28,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898840203] [2020-10-11 13:40:28,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 13:40:28,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:40:28,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 13:40:28,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:40:28,019 INFO L87 Difference]: Start difference. First operand 1213 states and 4426 transitions. Second operand 4 states. [2020-10-11 13:40:28,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:40:28,126 INFO L93 Difference]: Finished difference Result 1516 states and 5554 transitions. [2020-10-11 13:40:28,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 13:40:28,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-11 13:40:28,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:40:28,141 INFO L225 Difference]: With dead ends: 1516 [2020-10-11 13:40:28,141 INFO L226 Difference]: Without dead ends: 1516 [2020-10-11 13:40:28,142 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:40:28,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2020-10-11 13:40:28,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1241. [2020-10-11 13:40:28,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-10-11 13:40:28,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 4558 transitions. [2020-10-11 13:40:28,196 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 4558 transitions. Word has length 9 [2020-10-11 13:40:28,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:40:28,197 INFO L481 AbstractCegarLoop]: Abstraction has 1241 states and 4558 transitions. [2020-10-11 13:40:28,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 13:40:28,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 4558 transitions. [2020-10-11 13:40:28,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 13:40:28,198 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:28,198 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:40:28,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 13:40:28,199 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:40:28,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:28,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1222264884, now seen corresponding path program 1 times [2020-10-11 13:40:28,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:28,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452943170] [2020-10-11 13:40:28,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:40:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 13:40:28,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452943170] [2020-10-11 13:40:28,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:40:28,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:40:28,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512569500] [2020-10-11 13:40:28,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 13:40:28,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:40:28,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 13:40:28,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:40:28,267 INFO L87 Difference]: Start difference. First operand 1241 states and 4558 transitions. Second operand 5 states. [2020-10-11 13:40:28,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:40:28,333 INFO L93 Difference]: Finished difference Result 1685 states and 6153 transitions. [2020-10-11 13:40:28,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 13:40:28,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-11 13:40:28,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:40:28,348 INFO L225 Difference]: With dead ends: 1685 [2020-10-11 13:40:28,349 INFO L226 Difference]: Without dead ends: 1685 [2020-10-11 13:40:28,349 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:40:28,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-10-11 13:40:28,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1404. [2020-10-11 13:40:28,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1404 states. [2020-10-11 13:40:28,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5142 transitions. [2020-10-11 13:40:28,415 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5142 transitions. Word has length 10 [2020-10-11 13:40:28,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:40:28,416 INFO L481 AbstractCegarLoop]: Abstraction has 1404 states and 5142 transitions. [2020-10-11 13:40:28,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 13:40:28,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5142 transitions. [2020-10-11 13:40:28,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 13:40:28,423 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:28,424 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:40:28,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 13:40:28,424 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:40:28,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:28,424 INFO L82 PathProgramCache]: Analyzing trace with hash -2070493020, now seen corresponding path program 1 times [2020-10-11 13:40:28,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:28,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615245286] [2020-10-11 13:40:28,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:40:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 13:40:28,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615245286] [2020-10-11 13:40:28,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:40:28,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:40:28,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364776519] [2020-10-11 13:40:28,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 13:40:28,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:40:28,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 13:40:28,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:40:28,521 INFO L87 Difference]: Start difference. First operand 1404 states and 5142 transitions. Second operand 4 states. [2020-10-11 13:40:28,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:40:28,622 INFO L93 Difference]: Finished difference Result 1785 states and 6555 transitions. [2020-10-11 13:40:28,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 13:40:28,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-11 13:40:28,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:40:28,639 INFO L225 Difference]: With dead ends: 1785 [2020-10-11 13:40:28,640 INFO L226 Difference]: Without dead ends: 1785 [2020-10-11 13:40:28,640 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:40:28,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2020-10-11 13:40:28,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1545. [2020-10-11 13:40:28,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2020-10-11 13:40:28,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 5692 transitions. [2020-10-11 13:40:28,706 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 5692 transitions. Word has length 12 [2020-10-11 13:40:28,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:40:28,706 INFO L481 AbstractCegarLoop]: Abstraction has 1545 states and 5692 transitions. [2020-10-11 13:40:28,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 13:40:28,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 5692 transitions. [2020-10-11 13:40:28,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 13:40:28,708 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:28,708 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-10-11 13:40:28,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 13:40:28,708 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:40:28,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:28,709 INFO L82 PathProgramCache]: Analyzing trace with hash -853373875, now seen corresponding path program 1 times [2020-10-11 13:40:28,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:28,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732067530] [2020-10-11 13:40:28,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 13:40:28,717 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 13:40:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 13:40:28,723 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 13:40:28,728 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 13:40:28,728 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 13:40:28,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 13:40:28,729 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 13:40:28,729 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-11 13:40:28,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,738 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,740 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,740 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,741 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,741 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,742 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,742 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,743 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,743 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,743 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,743 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,744 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,744 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,745 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,745 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,745 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,745 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,745 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,746 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,746 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,746 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,748 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,750 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,750 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,751 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,752 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,752 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:28,754 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-11 13:40:28,754 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 13:40:28,754 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 13:40:28,754 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 13:40:28,754 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 13:40:28,754 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 13:40:28,755 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 13:40:28,755 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 13:40:28,755 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 13:40:28,756 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 13:40:28,756 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 74 transitions, 180 flow [2020-10-11 13:40:28,756 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 74 transitions, 180 flow [2020-10-11 13:40:28,756 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 74 transitions, 180 flow [2020-10-11 13:40:28,772 INFO L129 PetriNetUnfolder]: 13/109 cut-off events. [2020-10-11 13:40:28,773 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-11 13:40:28,774 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 109 events. 13/109 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 308 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 95. Up to 10 conditions per place. [2020-10-11 13:40:28,778 INFO L117 LiptonReduction]: Number of co-enabled transitions 3224 [2020-10-11 13:40:29,873 INFO L132 LiptonReduction]: Checked pairs total: 7163 [2020-10-11 13:40:29,873 INFO L134 LiptonReduction]: Total number of compositions: 52 [2020-10-11 13:40:29,873 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 35 transitions, 102 flow [2020-10-11 13:40:30,446 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7516 states. [2020-10-11 13:40:30,447 INFO L276 IsEmpty]: Start isEmpty. Operand 7516 states. [2020-10-11 13:40:30,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-11 13:40:30,447 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:30,447 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:40:30,447 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 13:40:30,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:30,448 INFO L82 PathProgramCache]: Analyzing trace with hash -242484138, now seen corresponding path program 1 times [2020-10-11 13:40:30,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:30,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719559829] [2020-10-11 13:40:30,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:40:30,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:40:30,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719559829] [2020-10-11 13:40:30,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:40:30,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:40:30,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927631813] [2020-10-11 13:40:30,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 13:40:30,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:40:30,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 13:40:30,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:40:30,487 INFO L87 Difference]: Start difference. First operand 7516 states. Second operand 5 states. [2020-10-11 13:40:30,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:40:30,707 INFO L93 Difference]: Finished difference Result 8945 states and 41357 transitions. [2020-10-11 13:40:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 13:40:30,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-11 13:40:30,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:40:30,813 INFO L225 Difference]: With dead ends: 8945 [2020-10-11 13:40:30,813 INFO L226 Difference]: Without dead ends: 8945 [2020-10-11 13:40:30,813 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:40:30,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8945 states. [2020-10-11 13:40:31,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8945 to 6943. [2020-10-11 13:40:31,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6943 states. [2020-10-11 13:40:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6943 states to 6943 states and 32243 transitions. [2020-10-11 13:40:31,283 INFO L78 Accepts]: Start accepts. Automaton has 6943 states and 32243 transitions. Word has length 7 [2020-10-11 13:40:31,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:40:31,284 INFO L481 AbstractCegarLoop]: Abstraction has 6943 states and 32243 transitions. [2020-10-11 13:40:31,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 13:40:31,284 INFO L276 IsEmpty]: Start isEmpty. Operand 6943 states and 32243 transitions. [2020-10-11 13:40:31,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 13:40:31,284 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:31,285 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:40:31,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-11 13:40:31,285 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 13:40:31,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:31,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1098996544, now seen corresponding path program 1 times [2020-10-11 13:40:31,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:31,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823968913] [2020-10-11 13:40:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:40:31,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:40:31,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823968913] [2020-10-11 13:40:31,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:40:31,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:40:31,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159801747] [2020-10-11 13:40:31,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 13:40:31,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:40:31,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 13:40:31,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:40:31,350 INFO L87 Difference]: Start difference. First operand 6943 states and 32243 transitions. Second operand 4 states. [2020-10-11 13:40:31,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:40:31,687 INFO L93 Difference]: Finished difference Result 9334 states and 43415 transitions. [2020-10-11 13:40:31,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 13:40:31,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-11 13:40:31,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:40:31,737 INFO L225 Difference]: With dead ends: 9334 [2020-10-11 13:40:31,737 INFO L226 Difference]: Without dead ends: 9334 [2020-10-11 13:40:31,738 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:40:31,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9334 states. [2020-10-11 13:40:32,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9334 to 7850. [2020-10-11 13:40:32,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7850 states. [2020-10-11 13:40:32,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7850 states to 7850 states and 36573 transitions. [2020-10-11 13:40:32,116 INFO L78 Accepts]: Start accepts. Automaton has 7850 states and 36573 transitions. Word has length 9 [2020-10-11 13:40:32,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:40:32,117 INFO L481 AbstractCegarLoop]: Abstraction has 7850 states and 36573 transitions. [2020-10-11 13:40:32,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 13:40:32,117 INFO L276 IsEmpty]: Start isEmpty. Operand 7850 states and 36573 transitions. [2020-10-11 13:40:32,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 13:40:32,117 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:32,118 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:40:32,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-11 13:40:32,118 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 13:40:32,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:32,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1906558445, now seen corresponding path program 1 times [2020-10-11 13:40:32,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:32,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085714584] [2020-10-11 13:40:32,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:40:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 13:40:32,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085714584] [2020-10-11 13:40:32,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:40:32,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:40:32,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175654282] [2020-10-11 13:40:32,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 13:40:32,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:40:32,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 13:40:32,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:40:32,160 INFO L87 Difference]: Start difference. First operand 7850 states and 36573 transitions. Second operand 5 states. [2020-10-11 13:40:32,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:40:32,431 INFO L93 Difference]: Finished difference Result 10343 states and 47933 transitions. [2020-10-11 13:40:32,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 13:40:32,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-11 13:40:32,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:40:32,487 INFO L225 Difference]: With dead ends: 10343 [2020-10-11 13:40:32,487 INFO L226 Difference]: Without dead ends: 10343 [2020-10-11 13:40:32,487 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:40:32,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10343 states. [2020-10-11 13:40:32,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10343 to 8547. [2020-10-11 13:40:32,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8547 states. [2020-10-11 13:40:32,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8547 states to 8547 states and 39726 transitions. [2020-10-11 13:40:32,861 INFO L78 Accepts]: Start accepts. Automaton has 8547 states and 39726 transitions. Word has length 10 [2020-10-11 13:40:32,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:40:32,861 INFO L481 AbstractCegarLoop]: Abstraction has 8547 states and 39726 transitions. [2020-10-11 13:40:32,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 13:40:32,861 INFO L276 IsEmpty]: Start isEmpty. Operand 8547 states and 39726 transitions. [2020-10-11 13:40:32,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 13:40:32,862 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:32,862 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:40:32,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-11 13:40:32,863 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 13:40:32,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:32,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1748368365, now seen corresponding path program 1 times [2020-10-11 13:40:32,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:32,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086429704] [2020-10-11 13:40:32,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:40:32,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 13:40:32,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086429704] [2020-10-11 13:40:32,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:40:32,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:40:32,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459755144] [2020-10-11 13:40:32,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 13:40:32,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:40:32,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 13:40:32,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:40:32,911 INFO L87 Difference]: Start difference. First operand 8547 states and 39726 transitions. Second operand 4 states. [2020-10-11 13:40:33,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:40:33,092 INFO L93 Difference]: Finished difference Result 11574 states and 53865 transitions. [2020-10-11 13:40:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 13:40:33,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-11 13:40:33,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:40:33,142 INFO L225 Difference]: With dead ends: 11574 [2020-10-11 13:40:33,142 INFO L226 Difference]: Without dead ends: 11574 [2020-10-11 13:40:33,142 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:40:33,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11574 states. [2020-10-11 13:40:33,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11574 to 10068. [2020-10-11 13:40:33,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10068 states. [2020-10-11 13:40:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10068 states to 10068 states and 46954 transitions. [2020-10-11 13:40:33,710 INFO L78 Accepts]: Start accepts. Automaton has 10068 states and 46954 transitions. Word has length 12 [2020-10-11 13:40:33,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:40:33,711 INFO L481 AbstractCegarLoop]: Abstraction has 10068 states and 46954 transitions. [2020-10-11 13:40:33,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 13:40:33,711 INFO L276 IsEmpty]: Start isEmpty. Operand 10068 states and 46954 transitions. [2020-10-11 13:40:33,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 13:40:33,712 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:33,712 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:40:33,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-11 13:40:33,712 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 13:40:33,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:33,713 INFO L82 PathProgramCache]: Analyzing trace with hash -63994297, now seen corresponding path program 1 times [2020-10-11 13:40:33,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:33,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75062168] [2020-10-11 13:40:33,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:40:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:40:33,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75062168] [2020-10-11 13:40:33,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799039681] [2020-10-11 13:40:33,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:40:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:40:33,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 13:40:33,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:40:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:40:33,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 13:40:33,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-11 13:40:33,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306310705] [2020-10-11 13:40:33,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 13:40:33,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:40:33,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 13:40:33,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-11 13:40:33,884 INFO L87 Difference]: Start difference. First operand 10068 states and 46954 transitions. Second operand 6 states. [2020-10-11 13:40:33,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:40:33,993 INFO L93 Difference]: Finished difference Result 2132 states and 7715 transitions. [2020-10-11 13:40:33,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 13:40:33,997 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-11 13:40:33,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:40:34,007 INFO L225 Difference]: With dead ends: 2132 [2020-10-11 13:40:34,008 INFO L226 Difference]: Without dead ends: 2132 [2020-10-11 13:40:34,008 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-11 13:40:34,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2020-10-11 13:40:34,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 1721. [2020-10-11 13:40:34,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1721 states. [2020-10-11 13:40:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 6117 transitions. [2020-10-11 13:40:34,066 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 6117 transitions. Word has length 13 [2020-10-11 13:40:34,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:40:34,066 INFO L481 AbstractCegarLoop]: Abstraction has 1721 states and 6117 transitions. [2020-10-11 13:40:34,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 13:40:34,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 6117 transitions. [2020-10-11 13:40:34,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 13:40:34,067 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:34,068 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:40:34,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-11 13:40:34,284 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 13:40:34,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:34,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1110490997, now seen corresponding path program 1 times [2020-10-11 13:40:34,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:34,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699941681] [2020-10-11 13:40:34,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:40:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-11 13:40:34,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699941681] [2020-10-11 13:40:34,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:40:34,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:40:34,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478868814] [2020-10-11 13:40:34,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 13:40:34,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:40:34,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 13:40:34,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:40:34,324 INFO L87 Difference]: Start difference. First operand 1721 states and 6117 transitions. Second operand 5 states. [2020-10-11 13:40:34,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:40:34,391 INFO L93 Difference]: Finished difference Result 2966 states and 10590 transitions. [2020-10-11 13:40:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 13:40:34,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-11 13:40:34,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:40:34,400 INFO L225 Difference]: With dead ends: 2966 [2020-10-11 13:40:34,400 INFO L226 Difference]: Without dead ends: 2966 [2020-10-11 13:40:34,400 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:40:34,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-10-11 13:40:34,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1991. [2020-10-11 13:40:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2020-10-11 13:40:34,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 7107 transitions. [2020-10-11 13:40:34,463 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 7107 transitions. Word has length 13 [2020-10-11 13:40:34,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:40:34,463 INFO L481 AbstractCegarLoop]: Abstraction has 1991 states and 7107 transitions. [2020-10-11 13:40:34,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 13:40:34,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 7107 transitions. [2020-10-11 13:40:34,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 13:40:34,465 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:34,465 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-10-11 13:40:34,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-11 13:40:34,465 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 13:40:34,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:34,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1594368647, now seen corresponding path program 1 times [2020-10-11 13:40:34,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:34,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764590448] [2020-10-11 13:40:34,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 13:40:34,473 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 13:40:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 13:40:34,479 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 13:40:34,483 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 13:40:34,484 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 13:40:34,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-11 13:40:34,484 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 13:40:34,485 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-11 13:40:34,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,498 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,499 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,499 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,500 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,500 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,501 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,501 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,502 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,502 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,503 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,505 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,507 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,508 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,508 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,508 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,508 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,511 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,511 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,511 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,511 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,512 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,512 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,512 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,514 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,514 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,514 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,517 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,517 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,518 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,518 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,518 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,518 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,518 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:40:34,520 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-11 13:40:34,521 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 13:40:34,521 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 13:40:34,521 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 13:40:34,521 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 13:40:34,521 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 13:40:34,521 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 13:40:34,521 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 13:40:34,521 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 13:40:34,523 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 13:40:34,523 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 88 transitions, 221 flow [2020-10-11 13:40:34,523 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 88 transitions, 221 flow [2020-10-11 13:40:34,523 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 88 places, 88 transitions, 221 flow [2020-10-11 13:40:34,546 INFO L129 PetriNetUnfolder]: 16/132 cut-off events. [2020-10-11 13:40:34,546 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-11 13:40:34,548 INFO L80 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 132 events. 16/132 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 397 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 125. Up to 12 conditions per place. [2020-10-11 13:40:34,556 INFO L117 LiptonReduction]: Number of co-enabled transitions 4940 [2020-10-11 13:40:34,859 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2020-10-11 13:40:36,323 INFO L132 LiptonReduction]: Checked pairs total: 12187 [2020-10-11 13:40:36,323 INFO L134 LiptonReduction]: Total number of compositions: 61 [2020-10-11 13:40:36,324 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 44 transitions, 133 flow [2020-10-11 13:40:45,796 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 45100 states. [2020-10-11 13:40:45,797 INFO L276 IsEmpty]: Start isEmpty. Operand 45100 states. [2020-10-11 13:40:45,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-11 13:40:45,797 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:45,797 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:40:45,797 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]=== [2020-10-11 13:40:45,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:45,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1061986474, now seen corresponding path program 1 times [2020-10-11 13:40:45,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:45,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298761093] [2020-10-11 13:40:45,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:40:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:40:45,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298761093] [2020-10-11 13:40:45,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:40:45,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:40:45,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729972096] [2020-10-11 13:40:45,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 13:40:45,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:40:45,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 13:40:45,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:40:45,848 INFO L87 Difference]: Start difference. First operand 45100 states. Second operand 5 states. [2020-10-11 13:40:46,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:40:46,504 INFO L93 Difference]: Finished difference Result 50507 states and 283723 transitions. [2020-10-11 13:40:46,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 13:40:46,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-11 13:40:46,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:40:46,686 INFO L225 Difference]: With dead ends: 50507 [2020-10-11 13:40:46,686 INFO L226 Difference]: Without dead ends: 50507 [2020-10-11 13:40:46,686 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:40:49,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50507 states. [2020-10-11 13:40:50,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50507 to 39997. [2020-10-11 13:40:50,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39997 states. [2020-10-11 13:40:50,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39997 states to 39997 states and 225588 transitions. [2020-10-11 13:40:50,555 INFO L78 Accepts]: Start accepts. Automaton has 39997 states and 225588 transitions. Word has length 7 [2020-10-11 13:40:50,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:40:50,555 INFO L481 AbstractCegarLoop]: Abstraction has 39997 states and 225588 transitions. [2020-10-11 13:40:50,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 13:40:50,555 INFO L276 IsEmpty]: Start isEmpty. Operand 39997 states and 225588 transitions. [2020-10-11 13:40:50,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 13:40:50,556 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:50,556 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:40:50,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-11 13:40:50,556 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]=== [2020-10-11 13:40:50,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:50,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1633198036, now seen corresponding path program 1 times [2020-10-11 13:40:50,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:50,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840415462] [2020-10-11 13:40:50,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:40:50,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:40:50,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840415462] [2020-10-11 13:40:50,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:40:50,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:40:50,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303159278] [2020-10-11 13:40:50,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 13:40:50,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:40:50,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 13:40:50,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:40:50,608 INFO L87 Difference]: Start difference. First operand 39997 states and 225588 transitions. Second operand 4 states. [2020-10-11 13:40:51,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:40:51,669 INFO L93 Difference]: Finished difference Result 56104 states and 316572 transitions. [2020-10-11 13:40:51,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 13:40:51,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-11 13:40:51,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:40:51,876 INFO L225 Difference]: With dead ends: 56104 [2020-10-11 13:40:51,876 INFO L226 Difference]: Without dead ends: 56104 [2020-10-11 13:40:51,877 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:40:55,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56104 states. [2020-10-11 13:40:56,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56104 to 48029. [2020-10-11 13:40:56,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48029 states. [2020-10-11 13:40:56,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48029 states to 48029 states and 271277 transitions. [2020-10-11 13:40:56,775 INFO L78 Accepts]: Start accepts. Automaton has 48029 states and 271277 transitions. Word has length 9 [2020-10-11 13:40:56,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:40:56,775 INFO L481 AbstractCegarLoop]: Abstraction has 48029 states and 271277 transitions. [2020-10-11 13:40:56,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 13:40:56,775 INFO L276 IsEmpty]: Start isEmpty. Operand 48029 states and 271277 transitions. [2020-10-11 13:40:56,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 13:40:56,776 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:40:56,776 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:40:56,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-11 13:40:56,776 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]=== [2020-10-11 13:40:56,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:40:56,776 INFO L82 PathProgramCache]: Analyzing trace with hash 956422696, now seen corresponding path program 1 times [2020-10-11 13:40:56,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:40:56,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637636168] [2020-10-11 13:40:56,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:40:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:40:56,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 13:40:56,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637636168] [2020-10-11 13:40:56,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:40:56,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:40:56,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372709093] [2020-10-11 13:40:56,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 13:40:56,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:40:56,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 13:40:56,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:40:56,818 INFO L87 Difference]: Start difference. First operand 48029 states and 271277 transitions. Second operand 5 states. [2020-10-11 13:40:57,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:40:57,995 INFO L93 Difference]: Finished difference Result 60653 states and 341167 transitions. [2020-10-11 13:40:57,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 13:40:57,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-11 13:40:57,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:40:58,237 INFO L225 Difference]: With dead ends: 60653 [2020-10-11 13:40:58,237 INFO L226 Difference]: Without dead ends: 60653 [2020-10-11 13:40:58,237 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:40:59,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60653 states. [2020-10-11 13:41:03,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60653 to 50928. [2020-10-11 13:41:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50928 states. [2020-10-11 13:41:03,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50928 states to 50928 states and 287199 transitions. [2020-10-11 13:41:03,467 INFO L78 Accepts]: Start accepts. Automaton has 50928 states and 287199 transitions. Word has length 10 [2020-10-11 13:41:03,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:03,468 INFO L481 AbstractCegarLoop]: Abstraction has 50928 states and 287199 transitions. [2020-10-11 13:41:03,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 13:41:03,468 INFO L276 IsEmpty]: Start isEmpty. Operand 50928 states and 287199 transitions. [2020-10-11 13:41:03,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 13:41:03,468 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:03,469 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:03,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-11 13:41:03,469 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]=== [2020-10-11 13:41:03,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:03,469 INFO L82 PathProgramCache]: Analyzing trace with hash -760702, now seen corresponding path program 1 times [2020-10-11 13:41:03,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:03,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022083546] [2020-10-11 13:41:03,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 13:41:03,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022083546] [2020-10-11 13:41:03,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:03,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:41:03,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772073604] [2020-10-11 13:41:03,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 13:41:03,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:03,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 13:41:03,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:41:03,512 INFO L87 Difference]: Start difference. First operand 50928 states and 287199 transitions. Second operand 4 states. [2020-10-11 13:41:04,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:04,150 INFO L93 Difference]: Finished difference Result 71415 states and 402930 transitions. [2020-10-11 13:41:04,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 13:41:04,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-11 13:41:04,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:04,432 INFO L225 Difference]: With dead ends: 71415 [2020-10-11 13:41:04,432 INFO L226 Difference]: Without dead ends: 71415 [2020-10-11 13:41:04,433 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:41:06,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71415 states. [2020-10-11 13:41:11,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71415 to 62439. [2020-10-11 13:41:11,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62439 states. [2020-10-11 13:41:11,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62439 states to 62439 states and 352729 transitions. [2020-10-11 13:41:11,729 INFO L78 Accepts]: Start accepts. Automaton has 62439 states and 352729 transitions. Word has length 12 [2020-10-11 13:41:11,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:11,729 INFO L481 AbstractCegarLoop]: Abstraction has 62439 states and 352729 transitions. [2020-10-11 13:41:11,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 13:41:11,729 INFO L276 IsEmpty]: Start isEmpty. Operand 62439 states and 352729 transitions. [2020-10-11 13:41:11,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 13:41:11,730 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:11,730 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:11,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-11 13:41:11,730 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]=== [2020-10-11 13:41:11,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:11,731 INFO L82 PathProgramCache]: Analyzing trace with hash -973447414, now seen corresponding path program 1 times [2020-10-11 13:41:11,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:11,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076047696] [2020-10-11 13:41:11,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:11,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:11,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076047696] [2020-10-11 13:41:11,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896800064] [2020-10-11 13:41:11,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:41:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:11,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 13:41:11,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:41:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:41:11,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 13:41:11,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-11 13:41:11,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497270843] [2020-10-11 13:41:11,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 13:41:11,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:11,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 13:41:11,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-11 13:41:11,867 INFO L87 Difference]: Start difference. First operand 62439 states and 352729 transitions. Second operand 6 states. [2020-10-11 13:41:12,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:12,027 INFO L93 Difference]: Finished difference Result 8161 states and 34918 transitions. [2020-10-11 13:41:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 13:41:12,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-11 13:41:12,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:12,045 INFO L225 Difference]: With dead ends: 8161 [2020-10-11 13:41:12,045 INFO L226 Difference]: Without dead ends: 8161 [2020-10-11 13:41:12,046 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-11 13:41:12,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8161 states. [2020-10-11 13:41:12,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8161 to 6538. [2020-10-11 13:41:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6538 states. [2020-10-11 13:41:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6538 states to 6538 states and 27580 transitions. [2020-10-11 13:41:12,234 INFO L78 Accepts]: Start accepts. Automaton has 6538 states and 27580 transitions. Word has length 13 [2020-10-11 13:41:12,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:12,234 INFO L481 AbstractCegarLoop]: Abstraction has 6538 states and 27580 transitions. [2020-10-11 13:41:12,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 13:41:12,235 INFO L276 IsEmpty]: Start isEmpty. Operand 6538 states and 27580 transitions. [2020-10-11 13:41:12,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 13:41:12,235 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:12,235 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:12,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:41:12,436 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]=== [2020-10-11 13:41:12,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:12,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1037380060, now seen corresponding path program 1 times [2020-10-11 13:41:12,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:12,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157638589] [2020-10-11 13:41:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-11 13:41:12,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157638589] [2020-10-11 13:41:12,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:12,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:41:12,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236812063] [2020-10-11 13:41:12,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 13:41:12,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:12,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 13:41:12,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:41:12,501 INFO L87 Difference]: Start difference. First operand 6538 states and 27580 transitions. Second operand 5 states. [2020-10-11 13:41:12,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:12,621 INFO L93 Difference]: Finished difference Result 11626 states and 49057 transitions. [2020-10-11 13:41:12,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 13:41:12,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-11 13:41:12,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:12,650 INFO L225 Difference]: With dead ends: 11626 [2020-10-11 13:41:12,650 INFO L226 Difference]: Without dead ends: 11626 [2020-10-11 13:41:12,650 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:41:12,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11626 states. [2020-10-11 13:41:12,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11626 to 7402. [2020-10-11 13:41:12,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7402 states. [2020-10-11 13:41:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7402 states to 7402 states and 31270 transitions. [2020-10-11 13:41:12,896 INFO L78 Accepts]: Start accepts. Automaton has 7402 states and 31270 transitions. Word has length 13 [2020-10-11 13:41:12,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:12,896 INFO L481 AbstractCegarLoop]: Abstraction has 7402 states and 31270 transitions. [2020-10-11 13:41:12,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 13:41:12,896 INFO L276 IsEmpty]: Start isEmpty. Operand 7402 states and 31270 transitions. [2020-10-11 13:41:12,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 13:41:12,898 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:12,898 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:12,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-11 13:41:12,899 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]=== [2020-10-11 13:41:12,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:12,899 INFO L82 PathProgramCache]: Analyzing trace with hash -489841492, now seen corresponding path program 1 times [2020-10-11 13:41:12,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:12,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36150914] [2020-10-11 13:41:12,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:12,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-11 13:41:12,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36150914] [2020-10-11 13:41:12,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:12,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:41:12,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581665941] [2020-10-11 13:41:12,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 13:41:12,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:12,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 13:41:12,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:41:12,963 INFO L87 Difference]: Start difference. First operand 7402 states and 31270 transitions. Second operand 4 states. [2020-10-11 13:41:13,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:13,070 INFO L93 Difference]: Finished difference Result 6970 states and 29425 transitions. [2020-10-11 13:41:13,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 13:41:13,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-11 13:41:13,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:13,097 INFO L225 Difference]: With dead ends: 6970 [2020-10-11 13:41:13,097 INFO L226 Difference]: Without dead ends: 6970 [2020-10-11 13:41:13,097 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:41:13,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6970 states. [2020-10-11 13:41:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6970 to 6106. [2020-10-11 13:41:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6106 states. [2020-10-11 13:41:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 25735 transitions. [2020-10-11 13:41:13,351 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 25735 transitions. Word has length 15 [2020-10-11 13:41:13,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:13,351 INFO L481 AbstractCegarLoop]: Abstraction has 6106 states and 25735 transitions. [2020-10-11 13:41:13,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 13:41:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 25735 transitions. [2020-10-11 13:41:13,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-11 13:41:13,353 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:13,353 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:13,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-11 13:41:13,353 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]=== [2020-10-11 13:41:13,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:13,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1100110844, now seen corresponding path program 1 times [2020-10-11 13:41:13,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:13,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302106020] [2020-10-11 13:41:13,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:41:13,421 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-11 13:41:13,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302106020] [2020-10-11 13:41:13,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:41:13,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:41:13,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455614118] [2020-10-11 13:41:13,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 13:41:13,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:41:13,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 13:41:13,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:41:13,425 INFO L87 Difference]: Start difference. First operand 6106 states and 25735 transitions. Second operand 5 states. [2020-10-11 13:41:13,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:41:13,554 INFO L93 Difference]: Finished difference Result 10825 states and 45769 transitions. [2020-10-11 13:41:13,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 13:41:13,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-11 13:41:13,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:41:13,579 INFO L225 Difference]: With dead ends: 10825 [2020-10-11 13:41:13,579 INFO L226 Difference]: Without dead ends: 10825 [2020-10-11 13:41:13,580 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:41:13,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10825 states. [2020-10-11 13:41:13,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10825 to 6916. [2020-10-11 13:41:13,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6916 states. [2020-10-11 13:41:13,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6916 states to 6916 states and 29245 transitions. [2020-10-11 13:41:13,797 INFO L78 Accepts]: Start accepts. Automaton has 6916 states and 29245 transitions. Word has length 16 [2020-10-11 13:41:13,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:41:13,797 INFO L481 AbstractCegarLoop]: Abstraction has 6916 states and 29245 transitions. [2020-10-11 13:41:13,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 13:41:13,797 INFO L276 IsEmpty]: Start isEmpty. Operand 6916 states and 29245 transitions. [2020-10-11 13:41:13,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-11 13:41:13,800 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:41:13,801 INFO L421 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:41:13,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-11 13:41:13,801 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]=== [2020-10-11 13:41:13,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:41:13,801 INFO L82 PathProgramCache]: Analyzing trace with hash -475239234, now seen corresponding path program 1 times [2020-10-11 13:41:13,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:41:13,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345810609] [2020-10-11 13:41:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:41:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 13:41:13,809 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 13:41:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 13:41:13,814 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 13:41:13,819 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 13:41:13,819 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 13:41:13,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-11 13:41:13,820 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 13:41:13,820 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-11 13:41:13,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,836 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,836 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,836 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,837 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,837 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,838 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,838 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,838 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,839 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,839 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,840 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,840 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,840 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,840 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,840 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,840 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,840 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,840 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,841 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,841 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,841 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,841 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,841 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,841 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,845 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,845 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,845 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,846 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,846 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,847 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,847 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,847 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,847 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,847 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,847 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,849 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,849 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,849 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,849 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,849 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,849 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,849 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,850 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,851 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,851 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,852 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,853 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,853 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,853 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,853 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,853 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:41:13,854 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-11 13:41:13,854 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 13:41:13,855 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 13:41:13,855 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 13:41:13,855 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 13:41:13,855 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 13:41:13,855 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 13:41:13,855 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 13:41:13,855 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 13:41:13,856 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 13:41:13,856 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 102 transitions, 264 flow [2020-10-11 13:41:13,856 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 102 transitions, 264 flow [2020-10-11 13:41:13,857 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 264 flow [2020-10-11 13:41:13,876 INFO L129 PetriNetUnfolder]: 19/155 cut-off events. [2020-10-11 13:41:13,877 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-11 13:41:13,879 INFO L80 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 155 events. 19/155 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 462 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 156. Up to 14 conditions per place. [2020-10-11 13:41:13,887 INFO L117 LiptonReduction]: Number of co-enabled transitions 7020 [2020-10-11 13:41:16,080 INFO L132 LiptonReduction]: Checked pairs total: 20409 [2020-10-11 13:41:16,080 INFO L134 LiptonReduction]: Total number of compositions: 72 [2020-10-11 13:41:16,080 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 53 transitions, 166 flow [2020-10-11 13:46:42,611 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 270604 states. [2020-10-11 13:46:42,611 INFO L276 IsEmpty]: Start isEmpty. Operand 270604 states. [2020-10-11 13:46:42,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-11 13:46:42,611 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:46:42,611 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:46:42,612 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]=== [2020-10-11 13:46:42,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:46:42,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1232360898, now seen corresponding path program 1 times [2020-10-11 13:46:42,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:46:42,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945281717] [2020-10-11 13:46:42,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:46:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:46:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:46:42,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945281717] [2020-10-11 13:46:42,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:46:42,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:46:42,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823243248] [2020-10-11 13:46:42,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 13:46:42,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:46:42,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 13:46:42,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:46:42,658 INFO L87 Difference]: Start difference. First operand 270604 states. Second operand 5 states. [2020-10-11 13:46:46,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:46:46,355 INFO L93 Difference]: Finished difference Result 283913 states and 1878243 transitions. [2020-10-11 13:46:46,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 13:46:46,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-11 13:46:46,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:46:47,715 INFO L225 Difference]: With dead ends: 283913 [2020-10-11 13:46:47,715 INFO L226 Difference]: Without dead ends: 283913 [2020-10-11 13:46:47,716 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:47:23,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283913 states. [2020-10-11 13:47:29,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283913 to 232423. [2020-10-11 13:47:29,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232423 states. [2020-10-11 13:47:31,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232423 states to 232423 states and 1542529 transitions. [2020-10-11 13:47:31,279 INFO L78 Accepts]: Start accepts. Automaton has 232423 states and 1542529 transitions. Word has length 7 [2020-10-11 13:47:31,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:47:31,280 INFO L481 AbstractCegarLoop]: Abstraction has 232423 states and 1542529 transitions. [2020-10-11 13:47:31,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 13:47:31,280 INFO L276 IsEmpty]: Start isEmpty. Operand 232423 states and 1542529 transitions. [2020-10-11 13:47:31,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 13:47:31,280 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:47:31,280 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:47:31,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-11 13:47:31,280 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]=== [2020-10-11 13:47:31,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:47:31,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1112151552, now seen corresponding path program 1 times [2020-10-11 13:47:31,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:47:31,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23761006] [2020-10-11 13:47:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:47:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:47:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:47:31,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23761006] [2020-10-11 13:47:31,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:47:31,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:47:31,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080066413] [2020-10-11 13:47:31,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 13:47:31,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:47:31,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 13:47:31,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:47:31,365 INFO L87 Difference]: Start difference. First operand 232423 states and 1542529 transitions. Second operand 4 states. [2020-10-11 13:47:49,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:47:49,629 INFO L93 Difference]: Finished difference Result 334390 states and 2219305 transitions. [2020-10-11 13:47:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 13:47:49,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-11 13:47:49,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:47:51,168 INFO L225 Difference]: With dead ends: 334390 [2020-10-11 13:47:51,169 INFO L226 Difference]: Without dead ends: 334390 [2020-10-11 13:47:51,169 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:48:28,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334390 states. [2020-10-11 13:48:36,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334390 to 289718. [2020-10-11 13:48:36,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289718 states. [2020-10-11 13:48:40,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289718 states to 289718 states and 1923958 transitions. [2020-10-11 13:48:40,062 INFO L78 Accepts]: Start accepts. Automaton has 289718 states and 1923958 transitions. Word has length 9 [2020-10-11 13:48:40,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:48:40,062 INFO L481 AbstractCegarLoop]: Abstraction has 289718 states and 1923958 transitions. [2020-10-11 13:48:40,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 13:48:40,063 INFO L276 IsEmpty]: Start isEmpty. Operand 289718 states and 1923958 transitions. [2020-10-11 13:48:40,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 13:48:40,063 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:48:40,063 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:48:40,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-11 13:48:40,064 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]=== [2020-10-11 13:48:40,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:48:40,064 INFO L82 PathProgramCache]: Analyzing trace with hash 338611599, now seen corresponding path program 1 times [2020-10-11 13:48:40,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:48:40,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725924675] [2020-10-11 13:48:40,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:48:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:48:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 13:48:40,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725924675] [2020-10-11 13:48:40,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:48:40,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:48:40,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946588130] [2020-10-11 13:48:40,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 13:48:40,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:48:40,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 13:48:40,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:48:40,110 INFO L87 Difference]: Start difference. First operand 289718 states and 1923958 transitions. Second operand 5 states. [2020-10-11 13:48:58,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:48:58,792 INFO L93 Difference]: Finished difference Result 350111 states and 2318007 transitions. [2020-10-11 13:48:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 13:48:58,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-11 13:48:58,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:49:00,487 INFO L225 Difference]: With dead ends: 350111 [2020-10-11 13:49:00,487 INFO L226 Difference]: Without dead ends: 350111 [2020-10-11 13:49:00,488 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:49:33,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350111 states. [2020-10-11 13:49:42,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350111 to 301623. [2020-10-11 13:49:42,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301623 states. [2020-10-11 13:49:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301623 states to 301623 states and 2001033 transitions. [2020-10-11 13:49:43,749 INFO L78 Accepts]: Start accepts. Automaton has 301623 states and 2001033 transitions. Word has length 10 [2020-10-11 13:49:43,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:49:43,749 INFO L481 AbstractCegarLoop]: Abstraction has 301623 states and 2001033 transitions. [2020-10-11 13:49:43,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 13:49:43,750 INFO L276 IsEmpty]: Start isEmpty. Operand 301623 states and 2001033 transitions. [2020-10-11 13:49:43,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 13:49:43,750 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:49:43,750 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:49:43,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-11 13:49:43,751 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]=== [2020-10-11 13:49:43,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:49:43,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1011762542, now seen corresponding path program 1 times [2020-10-11 13:49:43,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:49:43,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221447470] [2020-10-11 13:49:43,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:49:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:49:43,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 13:49:43,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221447470] [2020-10-11 13:49:43,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:49:43,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:49:43,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884451558] [2020-10-11 13:49:43,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 13:49:43,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:49:43,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 13:49:43,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:49:43,812 INFO L87 Difference]: Start difference. First operand 301623 states and 2001033 transitions. Second operand 4 states. [2020-10-11 13:50:08,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:50:08,650 INFO L93 Difference]: Finished difference Result 431622 states and 2863908 transitions. [2020-10-11 13:50:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 13:50:08,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-11 13:50:08,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:50:10,814 INFO L225 Difference]: With dead ends: 431622 [2020-10-11 13:50:10,814 INFO L226 Difference]: Without dead ends: 431622 [2020-10-11 13:50:10,815 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:50:36,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431622 states. [2020-10-11 13:50:46,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431622 to 378924. [2020-10-11 13:50:46,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378924 states. [2020-10-11 13:50:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378924 states to 378924 states and 2516131 transitions. [2020-10-11 13:50:51,918 INFO L78 Accepts]: Start accepts. Automaton has 378924 states and 2516131 transitions. Word has length 12 [2020-10-11 13:50:51,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:50:51,918 INFO L481 AbstractCegarLoop]: Abstraction has 378924 states and 2516131 transitions. [2020-10-11 13:50:51,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 13:50:51,918 INFO L276 IsEmpty]: Start isEmpty. Operand 378924 states and 2516131 transitions. [2020-10-11 13:50:51,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 13:50:51,919 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:50:51,919 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:50:51,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-11 13:50:51,919 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]=== [2020-10-11 13:50:51,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:50:51,919 INFO L82 PathProgramCache]: Analyzing trace with hash -742979976, now seen corresponding path program 1 times [2020-10-11 13:50:51,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:50:51,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975382694] [2020-10-11 13:50:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:50:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:50:51,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:50:51,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975382694] [2020-10-11 13:50:51,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964423679] [2020-10-11 13:50:51,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:50:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:50:52,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 13:50:52,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 13:50:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:50:52,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 13:50:52,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-11 13:50:52,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574306029] [2020-10-11 13:50:52,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 13:50:52,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:50:52,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 13:50:52,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-11 13:50:52,058 INFO L87 Difference]: Start difference. First operand 378924 states and 2516131 transitions. Second operand 6 states. [2020-10-11 13:50:52,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:50:52,393 INFO L93 Difference]: Finished difference Result 29742 states and 146940 transitions. [2020-10-11 13:50:52,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 13:50:52,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-11 13:50:52,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:50:52,482 INFO L225 Difference]: With dead ends: 29742 [2020-10-11 13:50:52,482 INFO L226 Difference]: Without dead ends: 29742 [2020-10-11 13:50:52,482 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-11 13:50:53,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29742 states. [2020-10-11 13:51:09,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29742 to 23691. [2020-10-11 13:51:09,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23691 states. [2020-10-11 13:51:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23691 states to 23691 states and 115698 transitions. [2020-10-11 13:51:09,215 INFO L78 Accepts]: Start accepts. Automaton has 23691 states and 115698 transitions. Word has length 13 [2020-10-11 13:51:09,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:51:09,215 INFO L481 AbstractCegarLoop]: Abstraction has 23691 states and 115698 transitions. [2020-10-11 13:51:09,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 13:51:09,215 INFO L276 IsEmpty]: Start isEmpty. Operand 23691 states and 115698 transitions. [2020-10-11 13:51:09,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-11 13:51:09,216 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:51:09,216 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:51:09,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 13:51:09,422 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]=== [2020-10-11 13:51:09,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:51:09,422 INFO L82 PathProgramCache]: Analyzing trace with hash 508059146, now seen corresponding path program 1 times [2020-10-11 13:51:09,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:51:09,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304703453] [2020-10-11 13:51:09,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:51:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:51:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-11 13:51:09,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304703453] [2020-10-11 13:51:09,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:51:09,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:51:09,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379517822] [2020-10-11 13:51:09,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 13:51:09,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:51:09,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 13:51:09,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:51:09,481 INFO L87 Difference]: Start difference. First operand 23691 states and 115698 transitions. Second operand 5 states. [2020-10-11 13:51:09,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:51:09,791 INFO L93 Difference]: Finished difference Result 42981 states and 209508 transitions. [2020-10-11 13:51:09,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 13:51:09,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-11 13:51:09,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:51:09,916 INFO L225 Difference]: With dead ends: 42981 [2020-10-11 13:51:09,916 INFO L226 Difference]: Without dead ends: 42981 [2020-10-11 13:51:09,916 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:51:10,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42981 states. [2020-10-11 13:51:11,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42981 to 26337. [2020-10-11 13:51:11,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26337 states. [2020-10-11 13:51:11,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26337 states to 26337 states and 128676 transitions. [2020-10-11 13:51:11,433 INFO L78 Accepts]: Start accepts. Automaton has 26337 states and 128676 transitions. Word has length 13 [2020-10-11 13:51:11,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:51:11,434 INFO L481 AbstractCegarLoop]: Abstraction has 26337 states and 128676 transitions. [2020-10-11 13:51:11,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 13:51:11,434 INFO L276 IsEmpty]: Start isEmpty. Operand 26337 states and 128676 transitions. [2020-10-11 13:51:11,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 13:51:11,435 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:51:11,435 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:51:11,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-11 13:51:11,436 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]=== [2020-10-11 13:51:11,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:51:11,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1381432313, now seen corresponding path program 1 times [2020-10-11 13:51:11,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:51:11,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667796257] [2020-10-11 13:51:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:51:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:51:11,491 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-11 13:51:11,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667796257] [2020-10-11 13:51:11,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:51:11,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:51:11,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730301316] [2020-10-11 13:51:11,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 13:51:11,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:51:11,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 13:51:11,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:51:11,492 INFO L87 Difference]: Start difference. First operand 26337 states and 128676 transitions. Second operand 4 states. [2020-10-11 13:51:11,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:51:11,703 INFO L93 Difference]: Finished difference Result 25014 states and 122187 transitions. [2020-10-11 13:51:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 13:51:11,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-11 13:51:11,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:51:11,773 INFO L225 Difference]: With dead ends: 25014 [2020-10-11 13:51:11,773 INFO L226 Difference]: Without dead ends: 25014 [2020-10-11 13:51:11,773 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:51:12,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25014 states. [2020-10-11 13:51:13,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25014 to 22368. [2020-10-11 13:51:13,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22368 states. [2020-10-11 13:51:13,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22368 states to 22368 states and 109209 transitions. [2020-10-11 13:51:13,339 INFO L78 Accepts]: Start accepts. Automaton has 22368 states and 109209 transitions. Word has length 15 [2020-10-11 13:51:13,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:51:13,340 INFO L481 AbstractCegarLoop]: Abstraction has 22368 states and 109209 transitions. [2020-10-11 13:51:13,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 13:51:13,340 INFO L276 IsEmpty]: Start isEmpty. Operand 22368 states and 109209 transitions. [2020-10-11 13:51:13,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-11 13:51:13,341 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:51:13,341 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:51:13,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-11 13:51:13,341 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]=== [2020-10-11 13:51:13,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:51:13,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1113234386, now seen corresponding path program 1 times [2020-10-11 13:51:13,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:51:13,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891728998] [2020-10-11 13:51:13,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:51:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:51:13,379 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-11 13:51:13,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891728998] [2020-10-11 13:51:13,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:51:13,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:51:13,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440251446] [2020-10-11 13:51:13,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 13:51:13,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:51:13,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 13:51:13,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:51:13,383 INFO L87 Difference]: Start difference. First operand 22368 states and 109209 transitions. Second operand 5 states. [2020-10-11 13:51:13,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:51:13,717 INFO L93 Difference]: Finished difference Result 40695 states and 198579 transitions. [2020-10-11 13:51:13,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 13:51:13,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-11 13:51:13,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:51:13,838 INFO L225 Difference]: With dead ends: 40695 [2020-10-11 13:51:13,838 INFO L226 Difference]: Without dead ends: 40695 [2020-10-11 13:51:13,838 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:51:14,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40695 states. [2020-10-11 13:51:15,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40695 to 24960. [2020-10-11 13:51:15,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24960 states. [2020-10-11 13:51:15,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24960 states to 24960 states and 122007 transitions. [2020-10-11 13:51:15,235 INFO L78 Accepts]: Start accepts. Automaton has 24960 states and 122007 transitions. Word has length 16 [2020-10-11 13:51:15,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:51:15,236 INFO L481 AbstractCegarLoop]: Abstraction has 24960 states and 122007 transitions. [2020-10-11 13:51:15,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 13:51:15,236 INFO L276 IsEmpty]: Start isEmpty. Operand 24960 states and 122007 transitions. [2020-10-11 13:51:15,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-11 13:51:15,240 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:51:15,240 INFO L421 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:51:15,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-11 13:51:15,240 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]=== [2020-10-11 13:51:15,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:51:15,240 INFO L82 PathProgramCache]: Analyzing trace with hash 371361058, now seen corresponding path program 1 times [2020-10-11 13:51:15,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:51:15,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505805969] [2020-10-11 13:51:15,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:51:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:51:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-11 13:51:15,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505805969] [2020-10-11 13:51:15,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:51:15,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:51:15,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262270105] [2020-10-11 13:51:15,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 13:51:15,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:51:15,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 13:51:15,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:51:15,299 INFO L87 Difference]: Start difference. First operand 24960 states and 122007 transitions. Second operand 4 states. [2020-10-11 13:51:15,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:51:15,469 INFO L93 Difference]: Finished difference Result 23664 states and 115608 transitions. [2020-10-11 13:51:15,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 13:51:15,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-11 13:51:15,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:51:15,534 INFO L225 Difference]: With dead ends: 23664 [2020-10-11 13:51:15,535 INFO L226 Difference]: Without dead ends: 23664 [2020-10-11 13:51:15,535 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:51:16,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23664 states. [2020-10-11 13:51:16,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23664 to 21072. [2020-10-11 13:51:16,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21072 states. [2020-10-11 13:51:16,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21072 states to 21072 states and 102810 transitions. [2020-10-11 13:51:16,958 INFO L78 Accepts]: Start accepts. Automaton has 21072 states and 102810 transitions. Word has length 18 [2020-10-11 13:51:16,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:51:16,958 INFO L481 AbstractCegarLoop]: Abstraction has 21072 states and 102810 transitions. [2020-10-11 13:51:16,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 13:51:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 21072 states and 102810 transitions. [2020-10-11 13:51:16,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 13:51:16,962 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:51:16,962 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:51:16,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-11 13:51:16,962 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]=== [2020-10-11 13:51:16,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:51:16,963 INFO L82 PathProgramCache]: Analyzing trace with hash 745940009, now seen corresponding path program 1 times [2020-10-11 13:51:16,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:51:16,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329126689] [2020-10-11 13:51:16,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:51:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:51:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-11 13:51:17,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329126689] [2020-10-11 13:51:17,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:51:17,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:51:17,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239486861] [2020-10-11 13:51:17,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 13:51:17,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:51:17,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 13:51:17,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:51:17,004 INFO L87 Difference]: Start difference. First operand 21072 states and 102810 transitions. Second operand 5 states. [2020-10-11 13:51:17,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:51:17,392 INFO L93 Difference]: Finished difference Result 38184 states and 186699 transitions. [2020-10-11 13:51:17,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 13:51:17,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-11 13:51:17,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:51:17,547 INFO L225 Difference]: With dead ends: 38184 [2020-10-11 13:51:17,547 INFO L226 Difference]: Without dead ends: 38184 [2020-10-11 13:51:17,548 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 13:51:18,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38184 states. [2020-10-11 13:51:18,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38184 to 23502. [2020-10-11 13:51:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23502 states. [2020-10-11 13:51:18,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23502 states to 23502 states and 114960 transitions. [2020-10-11 13:51:18,868 INFO L78 Accepts]: Start accepts. Automaton has 23502 states and 114960 transitions. Word has length 19 [2020-10-11 13:51:18,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:51:18,868 INFO L481 AbstractCegarLoop]: Abstraction has 23502 states and 114960 transitions. [2020-10-11 13:51:18,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 13:51:18,868 INFO L276 IsEmpty]: Start isEmpty. Operand 23502 states and 114960 transitions. [2020-10-11 13:51:18,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 13:51:18,875 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:51:18,875 INFO L421 BasicCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:51:18,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-11 13:51:18,875 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]=== [2020-10-11 13:51:18,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:51:18,876 INFO L82 PathProgramCache]: Analyzing trace with hash -411186623, now seen corresponding path program 1 times [2020-10-11 13:51:18,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:51:18,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845767303] [2020-10-11 13:51:18,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:51:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:51:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-11 13:51:18,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845767303] [2020-10-11 13:51:18,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:51:18,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:51:18,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879043734] [2020-10-11 13:51:18,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 13:51:18,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:51:18,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 13:51:18,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:51:18,919 INFO L87 Difference]: Start difference. First operand 23502 states and 114960 transitions. Second operand 4 states. [2020-10-11 13:51:19,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:51:19,107 INFO L93 Difference]: Finished difference Result 22287 states and 108885 transitions. [2020-10-11 13:51:19,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-11 13:51:19,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-11 13:51:19,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:51:19,177 INFO L225 Difference]: With dead ends: 22287 [2020-10-11 13:51:19,177 INFO L226 Difference]: Without dead ends: 22287 [2020-10-11 13:51:19,178 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 13:51:19,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22287 states. [2020-10-11 13:51:20,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22287 to 19857. [2020-10-11 13:51:20,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19857 states. [2020-10-11 13:51:20,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19857 states to 19857 states and 96735 transitions. [2020-10-11 13:51:20,139 INFO L78 Accepts]: Start accepts. Automaton has 19857 states and 96735 transitions. Word has length 21 [2020-10-11 13:51:20,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:51:20,139 INFO L481 AbstractCegarLoop]: Abstraction has 19857 states and 96735 transitions. [2020-10-11 13:51:20,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 13:51:20,139 INFO L276 IsEmpty]: Start isEmpty. Operand 19857 states and 96735 transitions. [2020-10-11 13:51:20,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 13:51:20,146 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:51:20,146 INFO L421 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:51:20,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-11 13:51:20,147 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]=== [2020-10-11 13:51:20,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:51:20,147 INFO L82 PathProgramCache]: Analyzing trace with hash -603092677, now seen corresponding path program 1 times [2020-10-11 13:51:20,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:51:20,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236974222] [2020-10-11 13:51:20,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:51:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 13:51:20,155 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 13:51:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 13:51:20,160 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 13:51:20,165 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 13:51:20,165 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 13:51:20,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-11 13:51:20,167 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 13:51:20,167 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-11 13:51:20,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,189 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,204 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,204 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,205 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,205 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,205 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,205 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,205 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,206 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,206 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,206 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,206 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,208 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,208 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,208 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,208 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,208 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,208 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:51:20,210 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-11 13:51:20,210 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 13:51:20,210 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 13:51:20,210 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 13:51:20,211 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 13:51:20,211 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 13:51:20,211 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 13:51:20,211 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 13:51:20,211 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 13:51:20,212 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 13:51:20,213 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 116 transitions, 309 flow [2020-10-11 13:51:20,213 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 116 transitions, 309 flow [2020-10-11 13:51:20,213 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 116 places, 116 transitions, 309 flow [2020-10-11 13:51:20,233 INFO L129 PetriNetUnfolder]: 22/178 cut-off events. [2020-10-11 13:51:20,233 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-11 13:51:20,236 INFO L80 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 178 events. 22/178 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 560 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 188. Up to 16 conditions per place. [2020-10-11 13:51:20,245 INFO L117 LiptonReduction]: Number of co-enabled transitions 9464 [2020-10-11 13:51:20,395 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-10-11 13:51:22,392 INFO L132 LiptonReduction]: Checked pairs total: 23761 [2020-10-11 13:51:22,393 INFO L134 LiptonReduction]: Total number of compositions: 81 [2020-10-11 13:51:22,393 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 58 transitions, 193 flow Received shutdown request... [2020-10-11 13:52:22,114 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-11 13:52:22,117 WARN L235 ceAbstractionStarter]: Timeout [2020-10-11 13:52:22,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 01:52:22 BasicIcfg [2020-10-11 13:52:22,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 13:52:22,118 INFO L168 Benchmark]: Toolchain (without parser) took 719347.65 ms. Allocated memory was 253.2 MB in the beginning and 8.6 GB in the end (delta: 8.4 GB). Free memory was 209.2 MB in the beginning and 4.3 GB in the end (delta: -4.1 GB). Peak memory consumption was 6.1 GB. Max. memory is 14.2 GB. [2020-10-11 13:52:22,119 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 13:52:22,119 INFO L168 Benchmark]: CACSL2BoogieTranslator took 667.80 ms. Allocated memory was 253.2 MB in the beginning and 317.7 MB in the end (delta: 64.5 MB). Free memory was 209.2 MB in the beginning and 275.6 MB in the end (delta: -66.4 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. [2020-10-11 13:52:22,120 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.80 ms. Allocated memory is still 317.7 MB. Free memory is still 273.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 13:52:22,120 INFO L168 Benchmark]: Boogie Preprocessor took 26.47 ms. Allocated memory is still 317.7 MB. Free memory was 273.1 MB in the beginning and 270.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 13:52:22,121 INFO L168 Benchmark]: RCFGBuilder took 480.35 ms. Allocated memory is still 317.7 MB. Free memory was 270.6 MB in the beginning and 251.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-11 13:52:22,126 INFO L168 Benchmark]: TraceAbstraction took 718125.64 ms. Allocated memory was 317.7 MB in the beginning and 8.6 GB in the end (delta: 8.3 GB). Free memory was 248.7 MB in the beginning and 4.3 GB in the end (delta: -4.0 GB). Peak memory consumption was 6.1 GB. Max. memory is 14.2 GB. [2020-10-11 13:52:22,128 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 667.80 ms. Allocated memory was 253.2 MB in the beginning and 317.7 MB in the end (delta: 64.5 MB). Free memory was 209.2 MB in the beginning and 275.6 MB in the end (delta: -66.4 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 42.80 ms. Allocated memory is still 317.7 MB. Free memory is still 273.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.47 ms. Allocated memory is still 317.7 MB. Free memory was 273.1 MB in the beginning and 270.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 480.35 ms. Allocated memory is still 317.7 MB. Free memory was 270.6 MB in the beginning and 251.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 718125.64 ms. Allocated memory was 317.7 MB in the beginning and 8.6 GB in the end (delta: 8.3 GB). Free memory was 248.7 MB in the beginning and 4.3 GB in the end (delta: -4.0 GB). Peak memory consumption was 6.1 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 159 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 4 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 32 PlacesBefore, 12 PlacesAfterwards, 32 TransitionsBefore, 10 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 30 TotalNumberOfCompositions, 259 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 586 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 96 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.6s, 46 PlacesBefore, 22 PlacesAfterwards, 46 TransitionsBefore, 21 TransitionsAfterwards, 884 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 32 TotalNumberOfCompositions, 1787 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1103 VarBasedMoverChecksPositive, 57 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 164 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.8s, 60 PlacesBefore, 30 PlacesAfterwards, 60 TransitionsBefore, 27 TransitionsAfterwards, 1872 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 43 TotalNumberOfCompositions, 4048 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1882 VarBasedMoverChecksPositive, 86 VarBasedMoverChecksNegative, 33 SemBasedMoverChecksPositive, 53 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 275 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 74 PlacesBefore, 38 PlacesAfterwards, 74 TransitionsBefore, 35 TransitionsAfterwards, 3224 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 52 TotalNumberOfCompositions, 7163 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2879 VarBasedMoverChecksPositive, 190 VarBasedMoverChecksNegative, 117 SemBasedMoverChecksPositive, 73 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 360 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 88 PlacesBefore, 46 PlacesAfterwards, 88 TransitionsBefore, 44 TransitionsAfterwards, 4940 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 61 TotalNumberOfCompositions, 12187 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 4725 VarBasedMoverChecksPositive, 256 VarBasedMoverChecksNegative, 159 SemBasedMoverChecksPositive, 97 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 1.1s, 704 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 102 PlacesBefore, 54 PlacesAfterwards, 102 TransitionsBefore, 53 TransitionsAfterwards, 7020 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 72 TotalNumberOfCompositions, 20409 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 5117 VarBasedMoverChecksPositive, 239 VarBasedMoverChecksNegative, 133 SemBasedMoverChecksPositive, 106 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.8s, 549 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 116 PlacesBefore, 62 PlacesAfterwards, 116 TransitionsBefore, 58 TransitionsAfterwards, 9464 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 81 TotalNumberOfCompositions, 23761 MoverChecksTotal - TimeoutResultAtElement [Line: 690]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 690). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 62 places, 58 transitions, 193 flow. Already constructed 159110 states. Currently 48781 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 717.7s, OverallIterations: 38, TraceHistogramMax: 7, AutomataDifference: 82.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 406.2s, HoareTripleCheckerStatistics: 1902 SDtfs, 1594 SDslu, 2474 SDs, 0 SdLazy, 2172 SolverSat, 183 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=378924occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 226.2s AutomataMinimizationTime, 32 MinimizatonAttempts, 315382 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 488 NumberOfCodeBlocks, 488 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 372 ConstructedInterpolants, 0 QuantifiedInterpolants, 21730 SizeOfPredicates, 3 NumberOfNonLiveVariables, 210 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 35 InterpolantComputations, 29 PerfectInterpolantSequences, 173/185 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