/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 02:03:06,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 02:03:06,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 02:03:06,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 02:03:06,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 02:03:06,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 02:03:06,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 02:03:06,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 02:03:06,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 02:03:06,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 02:03:06,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 02:03:06,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 02:03:06,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 02:03:06,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 02:03:06,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 02:03:06,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 02:03:06,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 02:03:06,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 02:03:06,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 02:03:06,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 02:03:06,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 02:03:06,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 02:03:06,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 02:03:06,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 02:03:06,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-17 02:03:06,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 02:03:06,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 02:03:06,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 02:03:06,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 02:03:06,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 02:03:06,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 02:03:06,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 02:03:06,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 02:03:06,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 02:03:06,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 02:03:06,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 02:03:06,257 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 [2020-09-17 02:03:06,284 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 02:03:06,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 02:03:06,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 02:03:06,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 02:03:06,287 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 02:03:06,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 02:03:06,287 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 02:03:06,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 02:03:06,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 02:03:06,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 02:03:06,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 02:03:06,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 02:03:06,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 02:03:06,289 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 02:03:06,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 02:03:06,289 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 02:03:06,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 02:03:06,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 02:03:06,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 02:03:06,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 02:03:06,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 02:03:06,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 02:03:06,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 02:03:06,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-17 02:03:06,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 02:03:06,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 02:03:06,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 02:03:06,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 02:03:06,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-17 02:03:06,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-17 02:03:06,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 02:03:06,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 02:03:06,813 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 02:03:06,815 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 02:03:06,816 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 02:03:06,817 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-09-17 02:03:06,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/708b455cd/fd52c5fcf17d487a8046909aff7529fe/FLAG55a76b28d [2020-09-17 02:03:07,668 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 02:03:07,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-09-17 02:03:07,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/708b455cd/fd52c5fcf17d487a8046909aff7529fe/FLAG55a76b28d [2020-09-17 02:03:07,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/708b455cd/fd52c5fcf17d487a8046909aff7529fe [2020-09-17 02:03:07,887 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 02:03:07,894 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 02:03:07,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 02:03:07,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 02:03:07,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 02:03:07,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 02:03:07" (1/1) ... [2020-09-17 02:03:07,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2119e150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:03:07, skipping insertion in model container [2020-09-17 02:03:07,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 02:03:07" (1/1) ... [2020-09-17 02:03:07,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 02:03:07,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 02:03:08,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 02:03:08,622 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 02:03:08,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 02:03:08,795 INFO L208 MainTranslator]: Completed translation [2020-09-17 02:03:08,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:03:08 WrapperNode [2020-09-17 02:03:08,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 02:03:08,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 02:03:08,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 02:03:08,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 02:03:08,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:03:08" (1/1) ... [2020-09-17 02:03:08,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:03:08" (1/1) ... [2020-09-17 02:03:08,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 02:03:08,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 02:03:08,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 02:03:08,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 02:03:08,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:03:08" (1/1) ... [2020-09-17 02:03:08,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:03:08" (1/1) ... [2020-09-17 02:03:08,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:03:08" (1/1) ... [2020-09-17 02:03:08,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:03:08" (1/1) ... [2020-09-17 02:03:08,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:03:08" (1/1) ... [2020-09-17 02:03:08,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:03:08" (1/1) ... [2020-09-17 02:03:08,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:03:08" (1/1) ... [2020-09-17 02:03:08,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 02:03:08,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 02:03:08,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 02:03:08,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 02:03:08,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:03:08" (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 [2020-09-17 02:03:09,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-09-17 02:03:09,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-17 02:03:09,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 02:03:09,011 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2020-09-17 02:03:09,011 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2020-09-17 02:03:09,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 02:03:09,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 02:03:09,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 02:03:09,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 02:03:09,015 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 02:03:09,460 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 02:03:09,460 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-17 02:03:09,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 02:03:09 BoogieIcfgContainer [2020-09-17 02:03:09,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 02:03:09,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 02:03:09,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 02:03:09,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 02:03:09,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 02:03:07" (1/3) ... [2020-09-17 02:03:09,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2f18b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 02:03:09, skipping insertion in model container [2020-09-17 02:03:09,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 02:03:08" (2/3) ... [2020-09-17 02:03:09,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2f18b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 02:03:09, skipping insertion in model container [2020-09-17 02:03:09,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 02:03:09" (3/3) ... [2020-09-17 02:03:09,478 INFO L109 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2020-09-17 02:03:09,492 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 02:03:09,492 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-17 02:03:09,505 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 02:03:09,507 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 02:03:09,533 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:09,534 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:09,534 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:09,534 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:09,535 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:09,535 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:09,535 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:09,541 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:09,541 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:09,542 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:09,542 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:09,542 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:09,583 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-17 02:03:09,611 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:03:09,611 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:03:09,611 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:03:09,612 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:03:09,612 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:03:09,612 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:03:09,612 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:03:09,612 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:03:09,633 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 71 transitions, 150 flow [2020-09-17 02:03:09,636 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-09-17 02:03:09,702 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-09-17 02:03:09,703 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-09-17 02:03:09,708 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 103 events. 12/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-09-17 02:03:09,712 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 67 places, 71 transitions, 150 flow [2020-09-17 02:03:09,742 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2020-09-17 02:03:09,743 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-09-17 02:03:09,744 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 103 events. 12/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2020-09-17 02:03:09,746 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 370 [2020-09-17 02:03:09,748 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:03:11,270 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-09-17 02:03:11,593 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-17 02:03:11,806 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-17 02:03:11,895 INFO L206 etLargeBlockEncoding]: Checked pairs total: 264 [2020-09-17 02:03:11,895 INFO L214 etLargeBlockEncoding]: Total number of compositions: 66 [2020-09-17 02:03:11,900 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 36 flow [2020-09-17 02:03:11,912 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 27 states. [2020-09-17 02:03:11,915 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-17 02:03:11,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-17 02:03:11,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:11,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-17 02:03:11,926 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:11,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:11,934 INFO L82 PathProgramCache]: Analyzing trace with hash 8680406, now seen corresponding path program 1 times [2020-09-17 02:03:11,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:11,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534107341] [2020-09-17 02:03:11,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:03:12,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534107341] [2020-09-17 02:03:12,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:03:12,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 02:03:12,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293822542] [2020-09-17 02:03:12,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:03:12,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:03:12,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:03:12,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:03:12,222 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-09-17 02:03:12,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:03:12,279 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-09-17 02:03:12,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:03:12,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-17 02:03:12,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:03:12,301 INFO L225 Difference]: With dead ends: 27 [2020-09-17 02:03:12,302 INFO L226 Difference]: Without dead ends: 23 [2020-09-17 02:03:12,304 INFO L675 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 [2020-09-17 02:03:12,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-17 02:03:12,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-17 02:03:12,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-17 02:03:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2020-09-17 02:03:12,359 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2020-09-17 02:03:12,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:03:12,359 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2020-09-17 02:03:12,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:03:12,360 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-09-17 02:03:12,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-17 02:03:12,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:12,361 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-09-17 02:03:12,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 02:03:12,362 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:12,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:12,362 INFO L82 PathProgramCache]: Analyzing trace with hash -256835414, now seen corresponding path program 1 times [2020-09-17 02:03:12,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:12,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952975665] [2020-09-17 02:03:12,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:03:12,426 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:03:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:03:12,449 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:03:12,482 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 02:03:12,482 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 02:03:12,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 02:03:12,485 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 02:03:12,486 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 02:03:12,486 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-17 02:03:12,493 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,494 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,494 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,494 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,494 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,495 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,495 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,495 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,495 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,496 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,496 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,496 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,496 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,497 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,497 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,498 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,498 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,498 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,498 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,501 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,501 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,502 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,502 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,502 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:12,505 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-17 02:03:12,506 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:03:12,506 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:03:12,506 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:03:12,506 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:03:12,506 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:03:12,507 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:03:12,507 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:03:12,507 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:03:12,509 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 78 transitions, 174 flow [2020-09-17 02:03:12,510 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-09-17 02:03:12,546 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-09-17 02:03:12,547 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-09-17 02:03:12,548 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 183 events. 23/183 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 456 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2020-09-17 02:03:12,550 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 174 flow [2020-09-17 02:03:12,576 INFO L129 PetriNetUnfolder]: 23/183 cut-off events. [2020-09-17 02:03:12,577 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-09-17 02:03:12,578 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 183 events. 23/183 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 456 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2020-09-17 02:03:12,580 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 900 [2020-09-17 02:03:12,580 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:03:14,057 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-09-17 02:03:14,409 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-17 02:03:14,531 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-09-17 02:03:14,713 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2020-09-17 02:03:14,820 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-09-17 02:03:14,827 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1723 [2020-09-17 02:03:14,827 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-17 02:03:14,827 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 64 flow [2020-09-17 02:03:14,840 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2020-09-17 02:03:14,841 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-09-17 02:03:14,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-17 02:03:14,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:14,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-17 02:03:14,842 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:14,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:14,842 INFO L82 PathProgramCache]: Analyzing trace with hash 13452069, now seen corresponding path program 1 times [2020-09-17 02:03:14,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:14,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298603606] [2020-09-17 02:03:14,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:14,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:03:14,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298603606] [2020-09-17 02:03:14,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:03:14,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 02:03:14,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413839082] [2020-09-17 02:03:14,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:03:14,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:03:14,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:03:14,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:03:14,902 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2020-09-17 02:03:14,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:03:14,969 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2020-09-17 02:03:14,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:03:14,970 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-17 02:03:14,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:03:14,977 INFO L225 Difference]: With dead ends: 242 [2020-09-17 02:03:14,977 INFO L226 Difference]: Without dead ends: 216 [2020-09-17 02:03:14,978 INFO L675 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 [2020-09-17 02:03:14,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-09-17 02:03:15,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-09-17 02:03:15,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-17 02:03:15,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2020-09-17 02:03:15,010 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2020-09-17 02:03:15,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:03:15,010 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2020-09-17 02:03:15,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:03:15,010 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2020-09-17 02:03:15,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 02:03:15,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:15,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:03:15,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 02:03:15,012 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:15,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:15,013 INFO L82 PathProgramCache]: Analyzing trace with hash 76722491, now seen corresponding path program 1 times [2020-09-17 02:03:15,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:15,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188687231] [2020-09-17 02:03:15,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:03:15,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188687231] [2020-09-17 02:03:15,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984644098] [2020-09-17 02:03:15,138 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 [2020-09-17 02:03:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:15,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-17 02:03:15,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:03:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:03:15,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:03:15,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-17 02:03:15,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498982616] [2020-09-17 02:03:15,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 02:03:15,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:03:15,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 02:03:15,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-17 02:03:15,273 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand 6 states. [2020-09-17 02:03:15,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:03:15,321 INFO L93 Difference]: Finished difference Result 216 states and 490 transitions. [2020-09-17 02:03:15,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 02:03:15,322 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-09-17 02:03:15,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:03:15,324 INFO L225 Difference]: With dead ends: 216 [2020-09-17 02:03:15,325 INFO L226 Difference]: Without dead ends: 216 [2020-09-17 02:03:15,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-17 02:03:15,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-09-17 02:03:15,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-09-17 02:03:15,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-17 02:03:15,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 490 transitions. [2020-09-17 02:03:15,352 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 490 transitions. Word has length 8 [2020-09-17 02:03:15,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:03:15,352 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 490 transitions. [2020-09-17 02:03:15,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 02:03:15,357 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 490 transitions. [2020-09-17 02:03:15,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-17 02:03:15,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:15,358 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-09-17 02:03:15,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:03:15,560 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:15,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:15,560 INFO L82 PathProgramCache]: Analyzing trace with hash 94633273, now seen corresponding path program 1 times [2020-09-17 02:03:15,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:15,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977791635] [2020-09-17 02:03:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:03:15,617 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:03:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:03:15,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:03:15,679 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 02:03:15,680 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 02:03:15,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 02:03:15,681 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 02:03:15,681 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 02:03:15,684 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-17 02:03:15,699 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,699 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,699 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,700 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,700 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,701 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,701 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,702 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,702 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,702 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,702 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,703 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,703 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,703 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,703 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,704 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,704 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,704 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,704 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,704 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,705 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,705 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,706 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,706 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,706 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,706 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,708 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,708 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,709 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,709 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,709 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,711 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,711 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,711 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,711 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,712 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:15,715 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-17 02:03:15,716 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:03:15,716 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:03:15,716 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:03:15,716 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:03:15,716 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:03:15,716 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:03:15,716 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:03:15,716 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:03:15,718 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 85 transitions, 200 flow [2020-09-17 02:03:15,718 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-09-17 02:03:15,773 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-09-17 02:03:15,774 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-09-17 02:03:15,775 INFO L80 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 330 events. 45/330 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1086 event pairs, 1 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 191. Up to 16 conditions per place. [2020-09-17 02:03:15,781 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 85 transitions, 200 flow [2020-09-17 02:03:15,841 INFO L129 PetriNetUnfolder]: 45/330 cut-off events. [2020-09-17 02:03:15,841 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-09-17 02:03:15,842 INFO L80 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 330 events. 45/330 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1086 event pairs, 1 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 191. Up to 16 conditions per place. [2020-09-17 02:03:15,847 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1470 [2020-09-17 02:03:15,847 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:03:17,406 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-09-17 02:03:17,639 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-17 02:03:17,763 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3028 [2020-09-17 02:03:17,763 INFO L214 etLargeBlockEncoding]: Total number of compositions: 68 [2020-09-17 02:03:17,764 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2020-09-17 02:03:17,820 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1150 states. [2020-09-17 02:03:17,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states. [2020-09-17 02:03:17,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-17 02:03:17,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:17,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-17 02:03:17,821 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:17,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:17,822 INFO L82 PathProgramCache]: Analyzing trace with hash 18528206, now seen corresponding path program 1 times [2020-09-17 02:03:17,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:17,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122308592] [2020-09-17 02:03:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:03:17,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122308592] [2020-09-17 02:03:17,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:03:17,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 02:03:17,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455747866] [2020-09-17 02:03:17,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:03:17,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:03:17,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:03:17,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:03:17,866 INFO L87 Difference]: Start difference. First operand 1150 states. Second operand 3 states. [2020-09-17 02:03:17,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:03:17,935 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2020-09-17 02:03:17,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:03:17,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-17 02:03:17,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:03:17,947 INFO L225 Difference]: With dead ends: 1150 [2020-09-17 02:03:17,947 INFO L226 Difference]: Without dead ends: 1024 [2020-09-17 02:03:17,948 INFO L675 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 [2020-09-17 02:03:17,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-09-17 02:03:18,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-09-17 02:03:18,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-09-17 02:03:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2020-09-17 02:03:18,019 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2020-09-17 02:03:18,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:03:18,019 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2020-09-17 02:03:18,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:03:18,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2020-09-17 02:03:18,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 02:03:18,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:18,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:03:18,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 02:03:18,022 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:18,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:18,022 INFO L82 PathProgramCache]: Analyzing trace with hash 949696130, now seen corresponding path program 1 times [2020-09-17 02:03:18,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:18,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332167582] [2020-09-17 02:03:18,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:03:18,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332167582] [2020-09-17 02:03:18,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066986721] [2020-09-17 02:03:18,110 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 [2020-09-17 02:03:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:18,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-17 02:03:18,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:03:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:03:18,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:03:18,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-17 02:03:18,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317868102] [2020-09-17 02:03:18,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 02:03:18,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:03:18,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 02:03:18,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-17 02:03:18,204 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand 6 states. [2020-09-17 02:03:18,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:03:18,259 INFO L93 Difference]: Finished difference Result 1024 states and 3005 transitions. [2020-09-17 02:03:18,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 02:03:18,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-09-17 02:03:18,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:03:18,270 INFO L225 Difference]: With dead ends: 1024 [2020-09-17 02:03:18,270 INFO L226 Difference]: Without dead ends: 1024 [2020-09-17 02:03:18,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-17 02:03:18,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-09-17 02:03:18,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-09-17 02:03:18,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-09-17 02:03:18,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3005 transitions. [2020-09-17 02:03:18,310 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3005 transitions. Word has length 8 [2020-09-17 02:03:18,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:03:18,311 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 3005 transitions. [2020-09-17 02:03:18,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 02:03:18,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3005 transitions. [2020-09-17 02:03:18,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 02:03:18,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:18,312 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-09-17 02:03:18,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:03:18,527 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:18,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:18,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1421208619, now seen corresponding path program 1 times [2020-09-17 02:03:18,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:18,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055798836] [2020-09-17 02:03:18,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:03:18,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055798836] [2020-09-17 02:03:18,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:03:18,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:03:18,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713242441] [2020-09-17 02:03:18,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 02:03:18,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:03:18,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 02:03:18,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 02:03:18,606 INFO L87 Difference]: Start difference. First operand 1024 states and 3005 transitions. Second operand 4 states. [2020-09-17 02:03:18,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:03:18,656 INFO L93 Difference]: Finished difference Result 1005 states and 2767 transitions. [2020-09-17 02:03:18,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 02:03:18,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-17 02:03:18,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:03:18,665 INFO L225 Difference]: With dead ends: 1005 [2020-09-17 02:03:18,666 INFO L226 Difference]: Without dead ends: 1005 [2020-09-17 02:03:18,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 02:03:18,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2020-09-17 02:03:18,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 973. [2020-09-17 02:03:18,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-09-17 02:03:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 2707 transitions. [2020-09-17 02:03:18,705 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 2707 transitions. Word has length 12 [2020-09-17 02:03:18,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:03:18,707 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 2707 transitions. [2020-09-17 02:03:18,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 02:03:18,707 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 2707 transitions. [2020-09-17 02:03:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 02:03:18,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:18,716 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-09-17 02:03:18,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 02:03:18,716 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:18,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:18,716 INFO L82 PathProgramCache]: Analyzing trace with hash -515475845, now seen corresponding path program 1 times [2020-09-17 02:03:18,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:18,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887531280] [2020-09-17 02:03:18,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:03:18,754 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:03:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:03:18,791 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:03:18,802 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 02:03:18,803 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 02:03:18,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-17 02:03:18,804 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 02:03:18,804 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 02:03:18,805 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-17 02:03:18,819 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,820 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,820 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,820 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,820 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,820 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,821 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,821 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,822 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,822 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,822 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,822 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,822 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,822 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,823 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,823 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,823 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,823 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,823 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,823 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,824 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,824 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,824 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,824 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,824 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,824 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,825 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,825 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,825 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,828 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,828 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,828 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,829 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,833 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,834 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,834 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,834 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,834 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,836 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,836 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,836 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,837 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,837 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,839 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,839 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,840 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,840 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,840 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:18,845 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-17 02:03:18,845 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:03:18,845 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:03:18,845 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:03:18,846 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:03:18,846 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:03:18,846 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:03:18,846 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:03:18,846 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:03:18,851 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 92 transitions, 228 flow [2020-09-17 02:03:18,852 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-09-17 02:03:18,967 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-09-17 02:03:18,967 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-09-17 02:03:18,970 INFO L80 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 613 events. 91/613 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2732 event pairs, 6 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 350. Up to 32 conditions per place. [2020-09-17 02:03:19,005 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 92 transitions, 228 flow [2020-09-17 02:03:19,074 INFO L129 PetriNetUnfolder]: 91/613 cut-off events. [2020-09-17 02:03:19,074 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-09-17 02:03:19,077 INFO L80 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 613 events. 91/613 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2732 event pairs, 6 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 350. Up to 32 conditions per place. [2020-09-17 02:03:19,089 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2120 [2020-09-17 02:03:19,089 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:03:20,506 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-09-17 02:03:20,957 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-17 02:03:21,076 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4448 [2020-09-17 02:03:21,076 INFO L214 etLargeBlockEncoding]: Total number of compositions: 68 [2020-09-17 02:03:21,077 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 110 flow [2020-09-17 02:03:21,505 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5482 states. [2020-09-17 02:03:21,506 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states. [2020-09-17 02:03:21,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-17 02:03:21,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:21,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-17 02:03:21,507 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:21,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:21,507 INFO L82 PathProgramCache]: Analyzing trace with hash 23824947, now seen corresponding path program 1 times [2020-09-17 02:03:21,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:21,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055092402] [2020-09-17 02:03:21,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:21,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:03:21,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055092402] [2020-09-17 02:03:21,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:03:21,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 02:03:21,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254238029] [2020-09-17 02:03:21,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:03:21,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:03:21,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:03:21,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:03:21,539 INFO L87 Difference]: Start difference. First operand 5482 states. Second operand 3 states. [2020-09-17 02:03:21,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:03:21,619 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2020-09-17 02:03:21,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:03:21,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-17 02:03:21,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:03:21,681 INFO L225 Difference]: With dead ends: 5482 [2020-09-17 02:03:21,681 INFO L226 Difference]: Without dead ends: 4856 [2020-09-17 02:03:21,682 INFO L675 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 [2020-09-17 02:03:21,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-09-17 02:03:22,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-09-17 02:03:22,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-09-17 02:03:22,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2020-09-17 02:03:22,084 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2020-09-17 02:03:22,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:03:22,085 INFO L479 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2020-09-17 02:03:22,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:03:22,085 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2020-09-17 02:03:22,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 02:03:22,086 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:22,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:03:22,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-17 02:03:22,086 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:22,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:22,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1205655351, now seen corresponding path program 1 times [2020-09-17 02:03:22,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:22,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585974110] [2020-09-17 02:03:22,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:03:22,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585974110] [2020-09-17 02:03:22,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046598975] [2020-09-17 02:03:22,137 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 [2020-09-17 02:03:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:22,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-17 02:03:22,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:03:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:03:22,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:03:22,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-17 02:03:22,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100131651] [2020-09-17 02:03:22,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 02:03:22,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:03:22,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 02:03:22,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-17 02:03:22,228 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand 6 states. [2020-09-17 02:03:22,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:03:22,302 INFO L93 Difference]: Finished difference Result 4856 states and 17424 transitions. [2020-09-17 02:03:22,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 02:03:22,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-09-17 02:03:22,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:03:22,355 INFO L225 Difference]: With dead ends: 4856 [2020-09-17 02:03:22,355 INFO L226 Difference]: Without dead ends: 4856 [2020-09-17 02:03:22,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-17 02:03:22,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-09-17 02:03:22,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-09-17 02:03:22,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4856 states. [2020-09-17 02:03:22,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17424 transitions. [2020-09-17 02:03:22,592 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17424 transitions. Word has length 8 [2020-09-17 02:03:22,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:03:22,592 INFO L479 AbstractCegarLoop]: Abstraction has 4856 states and 17424 transitions. [2020-09-17 02:03:22,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 02:03:22,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17424 transitions. [2020-09-17 02:03:22,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 02:03:22,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:22,593 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-09-17 02:03:22,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-17 02:03:22,809 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:22,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:22,809 INFO L82 PathProgramCache]: Analyzing trace with hash -137206530, now seen corresponding path program 1 times [2020-09-17 02:03:22,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:22,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392547083] [2020-09-17 02:03:22,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:03:22,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392547083] [2020-09-17 02:03:22,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:03:22,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:03:22,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276282693] [2020-09-17 02:03:22,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 02:03:22,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:03:22,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 02:03:22,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 02:03:22,861 INFO L87 Difference]: Start difference. First operand 4856 states and 17424 transitions. Second operand 4 states. [2020-09-17 02:03:22,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:03:22,925 INFO L93 Difference]: Finished difference Result 4985 states and 16961 transitions. [2020-09-17 02:03:22,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 02:03:22,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-17 02:03:22,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:03:22,967 INFO L225 Difference]: With dead ends: 4985 [2020-09-17 02:03:22,967 INFO L226 Difference]: Without dead ends: 4985 [2020-09-17 02:03:22,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 02:03:23,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2020-09-17 02:03:23,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 4793. [2020-09-17 02:03:23,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4793 states. [2020-09-17 02:03:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 16469 transitions. [2020-09-17 02:03:23,211 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 16469 transitions. Word has length 12 [2020-09-17 02:03:23,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:03:23,211 INFO L479 AbstractCegarLoop]: Abstraction has 4793 states and 16469 transitions. [2020-09-17 02:03:23,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 02:03:23,212 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 16469 transitions. [2020-09-17 02:03:23,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 02:03:23,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:23,216 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2020-09-17 02:03:23,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-17 02:03:23,216 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:23,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:23,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1534304145, now seen corresponding path program 1 times [2020-09-17 02:03:23,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:23,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973838352] [2020-09-17 02:03:23,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:03:23,363 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:03:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:03:23,383 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:03:23,392 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 02:03:23,392 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 02:03:23,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-17 02:03:23,393 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 02:03:23,393 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 02:03:23,394 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-17 02:03:23,404 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,404 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,404 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,405 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,405 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,405 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,405 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,406 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,406 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,406 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,406 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,407 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,407 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,407 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,407 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,407 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,407 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,408 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,408 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,408 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,408 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,409 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,409 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,409 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,409 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,409 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,409 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,410 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,410 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,410 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,411 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,411 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,411 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,411 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,411 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,412 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,412 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,412 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,412 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,413 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,417 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,417 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,418 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,418 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,418 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,420 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,420 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,420 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,420 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,421 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,422 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,423 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,423 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,423 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,423 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,426 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,427 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,427 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,427 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,427 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:23,434 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-17 02:03:23,434 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:03:23,435 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:03:23,435 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:03:23,435 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:03:23,435 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:03:23,435 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:03:23,435 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:03:23,436 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:03:23,437 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 99 transitions, 258 flow [2020-09-17 02:03:23,437 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-09-17 02:03:23,580 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-09-17 02:03:23,580 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-09-17 02:03:23,589 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 1172 events. 189/1172 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6706 event pairs, 23 based on Foata normal form. 0/967 useless extension candidates. Maximal degree in co-relation 658. Up to 80 conditions per place. [2020-09-17 02:03:23,619 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 99 transitions, 258 flow [2020-09-17 02:03:23,767 INFO L129 PetriNetUnfolder]: 189/1172 cut-off events. [2020-09-17 02:03:23,767 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-09-17 02:03:23,772 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 1172 events. 189/1172 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6706 event pairs, 23 based on Foata normal form. 0/967 useless extension candidates. Maximal degree in co-relation 658. Up to 80 conditions per place. [2020-09-17 02:03:23,790 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2850 [2020-09-17 02:03:23,790 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:03:25,507 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-09-17 02:03:25,873 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-09-17 02:03:26,051 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-17 02:03:26,150 INFO L206 etLargeBlockEncoding]: Checked pairs total: 5971 [2020-09-17 02:03:26,150 INFO L214 etLargeBlockEncoding]: Total number of compositions: 70 [2020-09-17 02:03:26,151 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 136 flow [2020-09-17 02:03:28,796 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26310 states. [2020-09-17 02:03:28,797 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states. [2020-09-17 02:03:28,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-17 02:03:28,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:28,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-17 02:03:28,797 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:28,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:28,798 INFO L82 PathProgramCache]: Analyzing trace with hash 29336307, now seen corresponding path program 1 times [2020-09-17 02:03:28,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:28,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403815704] [2020-09-17 02:03:28,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:03:28,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403815704] [2020-09-17 02:03:28,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:03:28,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 02:03:28,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803940354] [2020-09-17 02:03:28,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:03:28,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:03:28,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:03:28,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:03:28,832 INFO L87 Difference]: Start difference. First operand 26310 states. Second operand 3 states. [2020-09-17 02:03:29,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:03:29,607 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2020-09-17 02:03:29,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:03:29,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-17 02:03:29,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:03:29,752 INFO L225 Difference]: With dead ends: 26310 [2020-09-17 02:03:29,752 INFO L226 Difference]: Without dead ends: 23184 [2020-09-17 02:03:29,753 INFO L675 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 [2020-09-17 02:03:30,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-09-17 02:03:30,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-09-17 02:03:30,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-09-17 02:03:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2020-09-17 02:03:30,876 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2020-09-17 02:03:30,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:03:30,876 INFO L479 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2020-09-17 02:03:30,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:03:30,877 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2020-09-17 02:03:30,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 02:03:30,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:30,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:03:30,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-17 02:03:30,878 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:30,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:30,878 INFO L82 PathProgramCache]: Analyzing trace with hash 805936127, now seen corresponding path program 1 times [2020-09-17 02:03:30,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:30,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152300492] [2020-09-17 02:03:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:03:30,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152300492] [2020-09-17 02:03:30,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356934844] [2020-09-17 02:03:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:03:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:30,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-17 02:03:30,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:03:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:03:31,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:03:31,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-17 02:03:31,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040704812] [2020-09-17 02:03:31,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 02:03:31,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:03:31,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 02:03:31,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-17 02:03:31,036 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand 6 states. [2020-09-17 02:03:31,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:03:31,233 INFO L93 Difference]: Finished difference Result 23184 states and 98171 transitions. [2020-09-17 02:03:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 02:03:31,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-09-17 02:03:31,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:03:31,374 INFO L225 Difference]: With dead ends: 23184 [2020-09-17 02:03:31,374 INFO L226 Difference]: Without dead ends: 23184 [2020-09-17 02:03:31,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-17 02:03:31,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-09-17 02:03:33,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-09-17 02:03:33,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23184 states. [2020-09-17 02:03:33,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98171 transitions. [2020-09-17 02:03:33,893 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98171 transitions. Word has length 8 [2020-09-17 02:03:33,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:03:33,893 INFO L479 AbstractCegarLoop]: Abstraction has 23184 states and 98171 transitions. [2020-09-17 02:03:33,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 02:03:33,893 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98171 transitions. [2020-09-17 02:03:33,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 02:03:33,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:33,894 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-09-17 02:03:34,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:03:34,101 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:34,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:34,102 INFO L82 PathProgramCache]: Analyzing trace with hash -921892950, now seen corresponding path program 1 times [2020-09-17 02:03:34,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:34,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878094279] [2020-09-17 02:03:34,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:03:34,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878094279] [2020-09-17 02:03:34,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:03:34,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:03:34,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921495247] [2020-09-17 02:03:34,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 02:03:34,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:03:34,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 02:03:34,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 02:03:34,152 INFO L87 Difference]: Start difference. First operand 23184 states and 98171 transitions. Second operand 4 states. [2020-09-17 02:03:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:03:34,382 INFO L93 Difference]: Finished difference Result 24533 states and 99507 transitions. [2020-09-17 02:03:34,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 02:03:34,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-17 02:03:34,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:03:34,543 INFO L225 Difference]: With dead ends: 24533 [2020-09-17 02:03:34,544 INFO L226 Difference]: Without dead ends: 24533 [2020-09-17 02:03:34,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 02:03:34,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24533 states. [2020-09-17 02:03:35,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24533 to 23573. [2020-09-17 02:03:35,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23573 states. [2020-09-17 02:03:35,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23573 states to 23573 states and 96327 transitions. [2020-09-17 02:03:35,935 INFO L78 Accepts]: Start accepts. Automaton has 23573 states and 96327 transitions. Word has length 12 [2020-09-17 02:03:35,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:03:35,935 INFO L479 AbstractCegarLoop]: Abstraction has 23573 states and 96327 transitions. [2020-09-17 02:03:35,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 02:03:35,935 INFO L276 IsEmpty]: Start isEmpty. Operand 23573 states and 96327 transitions. [2020-09-17 02:03:35,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-17 02:03:35,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:35,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:03:35,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-17 02:03:35,939 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:35,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:35,939 INFO L82 PathProgramCache]: Analyzing trace with hash 81754288, now seen corresponding path program 1 times [2020-09-17 02:03:35,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:35,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714997478] [2020-09-17 02:03:35,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:03:36,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714997478] [2020-09-17 02:03:36,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409767338] [2020-09-17 02:03:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:03:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:03:36,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-09-17 02:03:36,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:03:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:03:36,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:03:36,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-09-17 02:03:36,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595903070] [2020-09-17 02:03:36,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-17 02:03:36,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:03:36,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-17 02:03:36,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-17 02:03:36,148 INFO L87 Difference]: Start difference. First operand 23573 states and 96327 transitions. Second operand 8 states. [2020-09-17 02:03:36,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:03:36,366 INFO L93 Difference]: Finished difference Result 23557 states and 96271 transitions. [2020-09-17 02:03:36,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 02:03:36,367 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-17 02:03:36,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:03:36,451 INFO L225 Difference]: With dead ends: 23557 [2020-09-17 02:03:36,451 INFO L226 Difference]: Without dead ends: 23557 [2020-09-17 02:03:36,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-17 02:03:36,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2020-09-17 02:03:38,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 23557. [2020-09-17 02:03:38,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23557 states. [2020-09-17 02:03:38,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23557 states to 23557 states and 96271 transitions. [2020-09-17 02:03:38,792 INFO L78 Accepts]: Start accepts. Automaton has 23557 states and 96271 transitions. Word has length 20 [2020-09-17 02:03:38,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:03:38,792 INFO L479 AbstractCegarLoop]: Abstraction has 23557 states and 96271 transitions. [2020-09-17 02:03:38,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-17 02:03:38,792 INFO L276 IsEmpty]: Start isEmpty. Operand 23557 states and 96271 transitions. [2020-09-17 02:03:38,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-17 02:03:38,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:03:38,800 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:03:39,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-09-17 02:03:39,001 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:03:39,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:03:39,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1012463302, now seen corresponding path program 1 times [2020-09-17 02:03:39,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:03:39,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531613843] [2020-09-17 02:03:39,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:03:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:03:39,025 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:03:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:03:39,053 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:03:39,077 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 02:03:39,078 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 02:03:39,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-17 02:03:39,078 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 02:03:39,079 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 02:03:39,079 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-17 02:03:39,097 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,097 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,097 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,097 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,098 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,098 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,098 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,098 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,098 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,098 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,098 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,099 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,099 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,099 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,099 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,100 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,100 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,100 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,100 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,100 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,100 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,101 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,101 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,101 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,101 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,101 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,101 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,102 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,102 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,102 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,102 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,102 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,102 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,103 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,103 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,103 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,103 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,103 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,103 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,104 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,104 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,104 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,105 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,105 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,105 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,105 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,105 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,107 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,107 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,107 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,107 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,108 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,110 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,110 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,110 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,111 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,111 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,113 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,113 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,114 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,114 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,114 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,116 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,116 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,116 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,116 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,116 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,119 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,119 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,119 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,120 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,120 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:03:39,125 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-17 02:03:39,126 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:03:39,126 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:03:39,126 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:03:39,126 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:03:39,126 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:03:39,126 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:03:39,127 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:03:39,127 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:03:39,128 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 106 transitions, 290 flow [2020-09-17 02:03:39,129 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-09-17 02:03:39,501 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-09-17 02:03:39,501 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-09-17 02:03:39,514 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 2291 events. 399/2291 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 16164 event pairs, 72 based on Foata normal form. 0/1892 useless extension candidates. Maximal degree in co-relation 1271. Up to 192 conditions per place. [2020-09-17 02:03:39,565 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 107 places, 106 transitions, 290 flow [2020-09-17 02:03:39,863 INFO L129 PetriNetUnfolder]: 399/2291 cut-off events. [2020-09-17 02:03:39,863 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-09-17 02:03:39,876 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 2291 events. 399/2291 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 16164 event pairs, 72 based on Foata normal form. 0/1892 useless extension candidates. Maximal degree in co-relation 1271. Up to 192 conditions per place. [2020-09-17 02:03:39,925 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3660 [2020-09-17 02:03:39,925 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:03:40,429 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-09-17 02:03:41,529 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-09-17 02:03:42,125 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-17 02:03:42,237 INFO L206 etLargeBlockEncoding]: Checked pairs total: 8653 [2020-09-17 02:03:42,238 INFO L214 etLargeBlockEncoding]: Total number of compositions: 71 [2020-09-17 02:03:42,239 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 164 flow [2020-09-17 02:04:24,374 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 127122 states. [2020-09-17 02:04:24,374 INFO L276 IsEmpty]: Start isEmpty. Operand 127122 states. [2020-09-17 02:04:24,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-17 02:04:24,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:24,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-17 02:04:24,375 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:24,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:24,375 INFO L82 PathProgramCache]: Analyzing trace with hash 35155697, now seen corresponding path program 1 times [2020-09-17 02:04:24,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:24,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875725261] [2020-09-17 02:04:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:24,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:24,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875725261] [2020-09-17 02:04:24,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:24,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 02:04:24,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883595612] [2020-09-17 02:04:24,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 02:04:24,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:24,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 02:04:24,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 02:04:24,417 INFO L87 Difference]: Start difference. First operand 127122 states. Second operand 3 states. [2020-09-17 02:04:29,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:29,364 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2020-09-17 02:04:29,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 02:04:29,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-09-17 02:04:29,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:29,898 INFO L225 Difference]: With dead ends: 127122 [2020-09-17 02:04:29,898 INFO L226 Difference]: Without dead ends: 111496 [2020-09-17 02:04:29,899 INFO L675 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 [2020-09-17 02:04:33,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-09-17 02:04:35,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-09-17 02:04:35,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-09-17 02:04:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2020-09-17 02:04:36,233 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2020-09-17 02:04:36,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:36,233 INFO L479 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2020-09-17 02:04:36,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 02:04:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2020-09-17 02:04:36,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 02:04:36,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:36,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:36,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-17 02:04:36,234 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:36,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:36,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1170285684, now seen corresponding path program 1 times [2020-09-17 02:04:36,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:36,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482952555] [2020-09-17 02:04:36,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:36,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482952555] [2020-09-17 02:04:36,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592318024] [2020-09-17 02:04:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:04:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:36,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-17 02:04:36,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:04:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 02:04:36,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:04:36,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-09-17 02:04:36,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735729388] [2020-09-17 02:04:36,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 02:04:36,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:36,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 02:04:36,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-17 02:04:36,375 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand 6 states. [2020-09-17 02:04:43,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:43,810 INFO L93 Difference]: Finished difference Result 111496 states and 543518 transitions. [2020-09-17 02:04:43,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 02:04:43,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-09-17 02:04:43,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:44,391 INFO L225 Difference]: With dead ends: 111496 [2020-09-17 02:04:44,392 INFO L226 Difference]: Without dead ends: 111496 [2020-09-17 02:04:44,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-17 02:04:47,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-09-17 02:04:50,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-09-17 02:04:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111496 states. [2020-09-17 02:04:50,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543518 transitions. [2020-09-17 02:04:50,883 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543518 transitions. Word has length 8 [2020-09-17 02:04:50,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:04:50,883 INFO L479 AbstractCegarLoop]: Abstraction has 111496 states and 543518 transitions. [2020-09-17 02:04:50,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 02:04:50,883 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543518 transitions. [2020-09-17 02:04:50,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 02:04:50,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:04:50,884 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-09-17 02:04:51,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:04:51,085 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:04:51,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:04:51,086 INFO L82 PathProgramCache]: Analyzing trace with hash -343123130, now seen corresponding path program 1 times [2020-09-17 02:04:51,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:04:51,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868922771] [2020-09-17 02:04:51,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:04:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:04:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-17 02:04:51,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868922771] [2020-09-17 02:04:51,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 02:04:51,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 02:04:51,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416003590] [2020-09-17 02:04:51,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 02:04:51,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:04:51,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 02:04:51,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 02:04:51,139 INFO L87 Difference]: Start difference. First operand 111496 states and 543518 transitions. Second operand 4 states. [2020-09-17 02:04:57,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:04:57,492 INFO L93 Difference]: Finished difference Result 120737 states and 568389 transitions. [2020-09-17 02:04:57,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 02:04:57,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-17 02:04:57,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:04:58,039 INFO L225 Difference]: With dead ends: 120737 [2020-09-17 02:04:58,039 INFO L226 Difference]: Without dead ends: 120737 [2020-09-17 02:04:58,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 02:05:00,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120737 states. [2020-09-17 02:05:03,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120737 to 116193. [2020-09-17 02:05:03,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116193 states. [2020-09-17 02:05:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2020-09-17 02:05:04,140 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 12 [2020-09-17 02:05:04,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:04,140 INFO L479 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2020-09-17 02:05:04,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 02:05:04,140 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2020-09-17 02:05:04,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-17 02:05:04,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:04,144 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:04,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-17 02:05:04,144 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:04,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:04,144 INFO L82 PathProgramCache]: Analyzing trace with hash 173719339, now seen corresponding path program 1 times [2020-09-17 02:05:04,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:04,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351985185] [2020-09-17 02:05:04,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:04,201 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:04,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351985185] [2020-09-17 02:05:04,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241704851] [2020-09-17 02:05:04,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:05:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:04,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2020-09-17 02:05:04,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:04,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:04,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-09-17 02:05:04,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141062613] [2020-09-17 02:05:04,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-17 02:05:04,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:04,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-17 02:05:04,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-17 02:05:04,320 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand 8 states. [2020-09-17 02:05:09,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:09,340 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2020-09-17 02:05:09,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 02:05:09,340 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-17 02:05:09,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:09,764 INFO L225 Difference]: With dead ends: 116177 [2020-09-17 02:05:09,764 INFO L226 Difference]: Without dead ends: 116177 [2020-09-17 02:05:09,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-17 02:05:12,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2020-09-17 02:05:17,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2020-09-17 02:05:17,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116177 states. [2020-09-17 02:05:19,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2020-09-17 02:05:19,103 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2020-09-17 02:05:19,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:19,103 INFO L479 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2020-09-17 02:05:19,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-17 02:05:19,103 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2020-09-17 02:05:19,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-17 02:05:19,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:19,110 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:19,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:05:19,325 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:19,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:19,325 INFO L82 PathProgramCache]: Analyzing trace with hash -999416206, now seen corresponding path program 1 times [2020-09-17 02:05:19,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:19,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50468676] [2020-09-17 02:05:19,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:19,399 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:19,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50468676] [2020-09-17 02:05:19,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297847252] [2020-09-17 02:05:19,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-17 02:05:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 02:05:19,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-17 02:05:19,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-17 02:05:19,527 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-17 02:05:19,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-17 02:05:19,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-09-17 02:05:19,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455839238] [2020-09-17 02:05:19,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-17 02:05:19,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 02:05:19,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-17 02:05:19,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-09-17 02:05:19,529 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand 10 states. [2020-09-17 02:05:20,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 02:05:20,208 INFO L93 Difference]: Finished difference Result 116113 states and 549521 transitions. [2020-09-17 02:05:20,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 02:05:20,209 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-09-17 02:05:20,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 02:05:20,606 INFO L225 Difference]: With dead ends: 116113 [2020-09-17 02:05:20,606 INFO L226 Difference]: Without dead ends: 116113 [2020-09-17 02:05:20,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-09-17 02:05:24,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116113 states. [2020-09-17 02:05:32,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116113 to 116113. [2020-09-17 02:05:32,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116113 states. [2020-09-17 02:05:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116113 states to 116113 states and 549521 transitions. [2020-09-17 02:05:32,472 INFO L78 Accepts]: Start accepts. Automaton has 116113 states and 549521 transitions. Word has length 24 [2020-09-17 02:05:32,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 02:05:32,472 INFO L479 AbstractCegarLoop]: Abstraction has 116113 states and 549521 transitions. [2020-09-17 02:05:32,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-17 02:05:32,473 INFO L276 IsEmpty]: Start isEmpty. Operand 116113 states and 549521 transitions. [2020-09-17 02:05:32,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-17 02:05:32,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 02:05:32,488 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 02:05:32,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-09-17 02:05:32,704 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 02:05:32,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 02:05:32,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1963695170, now seen corresponding path program 1 times [2020-09-17 02:05:32,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 02:05:32,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829078504] [2020-09-17 02:05:32,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 02:05:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:05:32,722 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:05:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-17 02:05:32,736 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-17 02:05:32,755 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-17 02:05:32,756 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-17 02:05:32,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-17 02:05:32,756 WARN L633 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-09-17 02:05:32,759 WARN L363 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-17 02:05:32,759 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-09-17 02:05:32,770 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,770 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,770 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,770 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,771 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,771 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,771 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,771 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,772 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,772 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,772 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,772 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,772 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,773 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,773 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,773 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,773 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,773 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,774 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,774 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,774 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,774 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,775 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,775 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,775 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,775 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,775 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,776 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,776 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,776 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,776 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,776 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,776 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,776 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,777 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,777 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,777 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,777 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,778 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,779 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,779 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,780 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,780 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,780 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,780 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,780 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,780 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,781 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,781 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,781 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,782 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,782 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,782 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,782 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,784 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,785 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,785 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,785 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,785 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,790 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,790 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,790 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,791 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,791 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,792 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,792 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,793 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,793 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,793 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,795 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,795 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,795 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,795 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,796 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,797 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,797 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,798 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,798 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,798 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,799 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,800 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,800 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,800 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,800 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 02:05:32,807 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-17 02:05:32,808 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 02:05:32,808 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 02:05:32,808 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 02:05:32,808 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 02:05:32,809 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 02:05:32,809 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 02:05:32,809 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 02:05:32,809 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 02:05:32,810 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 113 transitions, 324 flow [2020-09-17 02:05:32,811 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-09-17 02:05:33,462 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-09-17 02:05:33,463 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-09-17 02:05:33,490 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 4546 events. 849/4546 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38350 event pairs, 201 based on Foata normal form. 0/3761 useless extension candidates. Maximal degree in co-relation 2509. Up to 448 conditions per place. [2020-09-17 02:05:33,617 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 115 places, 113 transitions, 324 flow [2020-09-17 02:05:34,255 INFO L129 PetriNetUnfolder]: 849/4546 cut-off events. [2020-09-17 02:05:34,255 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-09-17 02:05:34,283 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 4546 events. 849/4546 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38350 event pairs, 201 based on Foata normal form. 0/3761 useless extension candidates. Maximal degree in co-relation 2509. Up to 448 conditions per place. [2020-09-17 02:05:34,406 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4550 [2020-09-17 02:05:34,406 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 02:05:37,242 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-09-17 02:05:37,638 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-17 02:05:37,759 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11131 [2020-09-17 02:05:37,759 INFO L214 etLargeBlockEncoding]: Total number of compositions: 75 [2020-09-17 02:05:37,760 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 194 flow