/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 03:09:33,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 03:09:33,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 03:09:33,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 03:09:33,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 03:09:33,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 03:09:33,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 03:09:33,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 03:09:33,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 03:09:33,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 03:09:33,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 03:09:33,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 03:09:33,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 03:09:33,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 03:09:33,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 03:09:33,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 03:09:33,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 03:09:33,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 03:09:33,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 03:09:33,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 03:09:33,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 03:09:33,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 03:09:33,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 03:09:33,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 03:09:33,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 03:09:33,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 03:09:33,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 03:09:33,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 03:09:33,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 03:09:33,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 03:09:33,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 03:09:33,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 03:09:33,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 03:09:33,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 03:09:33,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 03:09:33,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 03:09:33,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 03:09:33,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 03:09:33,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 03:09:33,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 03:09:33,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 03:09:33,200 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-18 03:09:33,227 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 03:09:33,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 03:09:33,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 03:09:33,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 03:09:33,228 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 03:09:33,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 03:09:33,229 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 03:09:33,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 03:09:33,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 03:09:33,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 03:09:33,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 03:09:33,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 03:09:33,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 03:09:33,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 03:09:33,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 03:09:33,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 03:09:33,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 03:09:33,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 03:09:33,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 03:09:33,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 03:09:33,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 03:09:33,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 03:09:33,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 03:09:33,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 03:09:33,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 03:09:33,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 03:09:33,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 03:09:33,235 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 03:09:33,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 03:09:33,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 03:09:33,507 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 03:09:33,525 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 03:09:33,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 03:09:33,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 03:09:33,530 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 03:09:33,531 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-04-18 03:09:33,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eb0afd11/3de210ca48564eaab02ba199eef9bf51/FLAG738a1d617 [2020-04-18 03:09:34,087 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 03:09:34,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-04-18 03:09:34,089 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-04-18 03:09:34,089 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-04-18 03:09:34,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eb0afd11/3de210ca48564eaab02ba199eef9bf51/FLAG738a1d617 [2020-04-18 03:09:34,448 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eb0afd11/3de210ca48564eaab02ba199eef9bf51 [2020-04-18 03:09:34,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 03:09:34,472 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 03:09:34,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 03:09:34,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 03:09:34,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 03:09:34,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:09:34" (1/1) ... [2020-04-18 03:09:34,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f1f13e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:34, skipping insertion in model container [2020-04-18 03:09:34,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:09:34" (1/1) ... [2020-04-18 03:09:34,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 03:09:34,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 03:09:34,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 03:09:34,786 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 03:09:34,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 03:09:34,816 INFO L208 MainTranslator]: Completed translation [2020-04-18 03:09:34,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:34 WrapperNode [2020-04-18 03:09:34,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 03:09:34,817 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 03:09:34,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 03:09:34,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 03:09:34,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:34" (1/1) ... [2020-04-18 03:09:34,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:34" (1/1) ... [2020-04-18 03:09:34,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 03:09:34,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 03:09:34,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 03:09:34,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 03:09:34,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:34" (1/1) ... [2020-04-18 03:09:34,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:34" (1/1) ... [2020-04-18 03:09:34,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:34" (1/1) ... [2020-04-18 03:09:34,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:34" (1/1) ... [2020-04-18 03:09:34,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:34" (1/1) ... [2020-04-18 03:09:34,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:34" (1/1) ... [2020-04-18 03:09:34,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:34" (1/1) ... [2020-04-18 03:09:34,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 03:09:34,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 03:09:34,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 03:09:34,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 03:09:34,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:34" (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 [2020-04-18 03:09:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 03:09:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-04-18 03:09:34,928 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-04-18 03:09:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 03:09:34,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 03:09:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 03:09:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-18 03:09:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 03:09:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 03:09:34,931 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 03:09:35,252 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 03:09:35,252 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-04-18 03:09:35,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:09:35 BoogieIcfgContainer [2020-04-18 03:09:35,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 03:09:35,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 03:09:35,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 03:09:35,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 03:09:35,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:09:34" (1/3) ... [2020-04-18 03:09:35,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b51f4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:09:35, skipping insertion in model container [2020-04-18 03:09:35,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:34" (2/3) ... [2020-04-18 03:09:35,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b51f4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:09:35, skipping insertion in model container [2020-04-18 03:09:35,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:09:35" (3/3) ... [2020-04-18 03:09:35,264 INFO L109 eAbstractionObserver]: Analyzing ICFG forkMultipleTimes.c [2020-04-18 03:09:35,279 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 03:09:35,280 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 03:09:35,289 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 03:09:35,290 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 03:09:35,326 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,326 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,326 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,327 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,327 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,327 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,327 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,328 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,328 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,328 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,328 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,328 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,329 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,329 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,329 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,330 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,330 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,330 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,330 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,331 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,331 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,331 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,331 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,331 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,332 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,332 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,332 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,332 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,333 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,333 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,333 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,333 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,334 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,334 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,334 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,334 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,334 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,335 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,335 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,335 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,335 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,336 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,336 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,336 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,336 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,340 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,341 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,341 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,341 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,342 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,342 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,342 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,349 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,349 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,350 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,350 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,350 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,350 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,350 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,353 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,354 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,354 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,354 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,354 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,355 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,355 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:09:35,388 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 03:09:35,405 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:09:35,405 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:09:35,405 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:09:35,405 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:09:35,406 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:09:35,406 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:09:35,406 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:09:35,406 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:09:35,423 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 77 transitions, 196 flow [2020-04-18 03:09:35,424 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2020-04-18 03:09:35,489 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2020-04-18 03:09:35,489 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-04-18 03:09:35,495 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 85 events. 5/85 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2020-04-18 03:09:35,500 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2020-04-18 03:09:35,537 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2020-04-18 03:09:35,538 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-04-18 03:09:35,539 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 85 events. 5/85 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2020-04-18 03:09:35,542 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1008 [2020-04-18 03:09:35,543 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 03:09:36,876 WARN L192 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-04-18 03:09:36,990 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-04-18 03:09:37,044 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1623 [2020-04-18 03:09:37,044 INFO L214 etLargeBlockEncoding]: Total number of compositions: 43 [2020-04-18 03:09:37,048 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 112 flow [2020-04-18 03:09:37,107 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 354 states. [2020-04-18 03:09:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-04-18 03:09:37,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:09:37,154 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:37,156 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:37,157 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-18 03:09:37,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:37,167 INFO L82 PathProgramCache]: Analyzing trace with hash -126150362, now seen corresponding path program 1 times [2020-04-18 03:09:37,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:37,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541877828] [2020-04-18 03:09:37,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:38,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:09:38,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541877828] [2020-04-18 03:09:38,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:38,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-04-18 03:09:38,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493642175] [2020-04-18 03:09:38,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 03:09:38,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:38,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 03:09:38,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-04-18 03:09:38,276 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 13 states. [2020-04-18 03:09:38,837 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-04-18 03:09:39,165 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-04-18 03:09:39,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:39,603 INFO L93 Difference]: Finished difference Result 551 states and 1465 transitions. [2020-04-18 03:09:39,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 03:09:39,605 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-04-18 03:09:39,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:39,649 INFO L225 Difference]: With dead ends: 551 [2020-04-18 03:09:39,649 INFO L226 Difference]: Without dead ends: 546 [2020-04-18 03:09:39,652 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2020-04-18 03:09:39,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-04-18 03:09:39,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 441. [2020-04-18 03:09:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-04-18 03:09:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1130 transitions. [2020-04-18 03:09:39,754 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1130 transitions. Word has length 25 [2020-04-18 03:09:39,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:39,756 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 1130 transitions. [2020-04-18 03:09:39,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 03:09:39,756 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1130 transitions. [2020-04-18 03:09:39,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:09:39,761 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:39,761 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:39,762 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-18 03:09:39,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:39,763 INFO L82 PathProgramCache]: Analyzing trace with hash -63589262, now seen corresponding path program 2 times [2020-04-18 03:09:39,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:39,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216183189] [2020-04-18 03:09:39,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:09:40,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216183189] [2020-04-18 03:09:40,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:40,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-04-18 03:09:40,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188687682] [2020-04-18 03:09:40,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:09:40,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:40,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:09:40,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:09:40,300 INFO L87 Difference]: Start difference. First operand 441 states and 1130 transitions. Second operand 16 states. [2020-04-18 03:09:41,732 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-04-18 03:09:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:43,812 INFO L93 Difference]: Finished difference Result 1110 states and 2807 transitions. [2020-04-18 03:09:43,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-04-18 03:09:43,813 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:09:43,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:43,823 INFO L225 Difference]: With dead ends: 1110 [2020-04-18 03:09:43,824 INFO L226 Difference]: Without dead ends: 1101 [2020-04-18 03:09:43,825 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=322, Invalid=1570, Unknown=0, NotChecked=0, Total=1892 [2020-04-18 03:09:43,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-04-18 03:09:43,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 503. [2020-04-18 03:09:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-04-18 03:09:43,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 1254 transitions. [2020-04-18 03:09:43,894 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 1254 transitions. Word has length 25 [2020-04-18 03:09:43,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:43,894 INFO L479 AbstractCegarLoop]: Abstraction has 503 states and 1254 transitions. [2020-04-18 03:09:43,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:09:43,895 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 1254 transitions. [2020-04-18 03:09:43,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:09:43,897 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:43,897 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:43,897 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-18 03:09:43,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:43,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1895995450, now seen corresponding path program 1 times [2020-04-18 03:09:43,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:43,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87725116] [2020-04-18 03:09:43,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:44,167 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-04-18 03:09:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:09:44,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87725116] [2020-04-18 03:09:44,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:44,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-04-18 03:09:44,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999539940] [2020-04-18 03:09:44,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 03:09:44,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:44,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 03:09:44,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-04-18 03:09:44,560 INFO L87 Difference]: Start difference. First operand 503 states and 1254 transitions. Second operand 13 states. [2020-04-18 03:09:45,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:45,488 INFO L93 Difference]: Finished difference Result 628 states and 1593 transitions. [2020-04-18 03:09:45,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 03:09:45,489 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-04-18 03:09:45,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:45,493 INFO L225 Difference]: With dead ends: 628 [2020-04-18 03:09:45,493 INFO L226 Difference]: Without dead ends: 620 [2020-04-18 03:09:45,494 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:09:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-04-18 03:09:45,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 585. [2020-04-18 03:09:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-04-18 03:09:45,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1479 transitions. [2020-04-18 03:09:45,511 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1479 transitions. Word has length 25 [2020-04-18 03:09:45,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:45,512 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1479 transitions. [2020-04-18 03:09:45,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 03:09:45,512 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1479 transitions. [2020-04-18 03:09:45,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:09:45,514 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:45,514 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:45,514 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-18 03:09:45,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:45,515 INFO L82 PathProgramCache]: Analyzing trace with hash 374980096, now seen corresponding path program 2 times [2020-04-18 03:09:45,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:45,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781964538] [2020-04-18 03:09:45,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:09:46,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781964538] [2020-04-18 03:09:46,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:46,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-04-18 03:09:46,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613909687] [2020-04-18 03:09:46,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:09:46,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:46,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:09:46,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:09:46,059 INFO L87 Difference]: Start difference. First operand 585 states and 1479 transitions. Second operand 16 states. [2020-04-18 03:09:47,733 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2020-04-18 03:09:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:49,944 INFO L93 Difference]: Finished difference Result 1235 states and 3057 transitions. [2020-04-18 03:09:49,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-04-18 03:09:49,945 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:09:49,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:49,952 INFO L225 Difference]: With dead ends: 1235 [2020-04-18 03:09:49,953 INFO L226 Difference]: Without dead ends: 1217 [2020-04-18 03:09:49,954 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=363, Invalid=1893, Unknown=0, NotChecked=0, Total=2256 [2020-04-18 03:09:49,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2020-04-18 03:09:49,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 667. [2020-04-18 03:09:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2020-04-18 03:09:49,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1708 transitions. [2020-04-18 03:09:49,980 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1708 transitions. Word has length 25 [2020-04-18 03:09:49,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:49,981 INFO L479 AbstractCegarLoop]: Abstraction has 667 states and 1708 transitions. [2020-04-18 03:09:49,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:09:49,981 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1708 transitions. [2020-04-18 03:09:49,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:09:49,983 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:49,983 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:49,984 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-18 03:09:49,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:49,984 INFO L82 PathProgramCache]: Analyzing trace with hash 284319048, now seen corresponding path program 1 times [2020-04-18 03:09:49,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:49,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705181208] [2020-04-18 03:09:49,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:09:50,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705181208] [2020-04-18 03:09:50,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:50,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 03:09:50,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718354275] [2020-04-18 03:09:50,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 03:09:50,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:50,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 03:09:50,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 03:09:50,095 INFO L87 Difference]: Start difference. First operand 667 states and 1708 transitions. Second operand 8 states. [2020-04-18 03:09:50,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:50,282 INFO L93 Difference]: Finished difference Result 850 states and 2132 transitions. [2020-04-18 03:09:50,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 03:09:50,283 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-04-18 03:09:50,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:50,287 INFO L225 Difference]: With dead ends: 850 [2020-04-18 03:09:50,287 INFO L226 Difference]: Without dead ends: 722 [2020-04-18 03:09:50,287 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:09:50,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2020-04-18 03:09:50,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 660. [2020-04-18 03:09:50,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2020-04-18 03:09:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1685 transitions. [2020-04-18 03:09:50,304 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1685 transitions. Word has length 25 [2020-04-18 03:09:50,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:50,304 INFO L479 AbstractCegarLoop]: Abstraction has 660 states and 1685 transitions. [2020-04-18 03:09:50,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 03:09:50,305 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1685 transitions. [2020-04-18 03:09:50,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:09:50,307 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:50,307 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:50,307 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-18 03:09:50,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:50,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1342328380, now seen corresponding path program 1 times [2020-04-18 03:09:50,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:50,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041231734] [2020-04-18 03:09:50,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:09:50,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041231734] [2020-04-18 03:09:50,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:50,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-04-18 03:09:50,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085880189] [2020-04-18 03:09:50,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 03:09:50,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:50,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 03:09:50,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-04-18 03:09:50,895 INFO L87 Difference]: Start difference. First operand 660 states and 1685 transitions. Second operand 14 states. [2020-04-18 03:09:52,204 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2020-04-18 03:09:53,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:09:53,248 INFO L93 Difference]: Finished difference Result 1157 states and 2967 transitions. [2020-04-18 03:09:53,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-18 03:09:53,249 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-04-18 03:09:53,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:09:53,257 INFO L225 Difference]: With dead ends: 1157 [2020-04-18 03:09:53,257 INFO L226 Difference]: Without dead ends: 1148 [2020-04-18 03:09:53,258 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=289, Invalid=833, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 03:09:53,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2020-04-18 03:09:53,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 833. [2020-04-18 03:09:53,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-04-18 03:09:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 2178 transitions. [2020-04-18 03:09:53,279 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 2178 transitions. Word has length 25 [2020-04-18 03:09:53,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:09:53,280 INFO L479 AbstractCegarLoop]: Abstraction has 833 states and 2178 transitions. [2020-04-18 03:09:53,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 03:09:53,280 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 2178 transitions. [2020-04-18 03:09:53,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:09:53,283 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:09:53,283 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:09:53,283 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-18 03:09:53,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:09:53,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1285072000, now seen corresponding path program 1 times [2020-04-18 03:09:53,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:09:53,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790568043] [2020-04-18 03:09:53,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:09:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:09:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:09:53,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790568043] [2020-04-18 03:09:53,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:09:53,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-04-18 03:09:53,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827957148] [2020-04-18 03:09:53,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 03:09:53,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:09:53,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 03:09:53,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-04-18 03:09:53,654 INFO L87 Difference]: Start difference. First operand 833 states and 2178 transitions. Second operand 17 states. [2020-04-18 03:09:54,303 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-04-18 03:09:54,573 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2020-04-18 03:09:54,729 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-04-18 03:09:55,145 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 47 [2020-04-18 03:09:55,282 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-04-18 03:09:55,856 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2020-04-18 03:09:56,023 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2020-04-18 03:09:56,200 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 44 [2020-04-18 03:09:56,335 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 36 [2020-04-18 03:09:56,566 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49 [2020-04-18 03:09:56,804 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 43 [2020-04-18 03:09:57,047 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-04-18 03:09:57,184 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-04-18 03:09:57,579 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 49 [2020-04-18 03:09:57,751 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 41 [2020-04-18 03:09:57,940 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 48 [2020-04-18 03:09:58,100 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 40 [2020-04-18 03:09:58,265 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2020-04-18 03:09:58,408 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 40 [2020-04-18 03:09:58,546 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2020-04-18 03:09:58,772 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 53 [2020-04-18 03:09:58,994 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 47 [2020-04-18 03:09:59,198 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 47 [2020-04-18 03:10:00,245 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2020-04-18 03:10:00,656 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48 [2020-04-18 03:10:00,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:00,752 INFO L93 Difference]: Finished difference Result 1513 states and 3755 transitions. [2020-04-18 03:10:00,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-04-18 03:10:00,752 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-04-18 03:10:00,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:00,761 INFO L225 Difference]: With dead ends: 1513 [2020-04-18 03:10:00,761 INFO L226 Difference]: Without dead ends: 1500 [2020-04-18 03:10:00,763 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=898, Invalid=3524, Unknown=0, NotChecked=0, Total=4422 [2020-04-18 03:10:00,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2020-04-18 03:10:00,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 932. [2020-04-18 03:10:00,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2020-04-18 03:10:00,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 2423 transitions. [2020-04-18 03:10:00,788 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 2423 transitions. Word has length 25 [2020-04-18 03:10:00,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:00,788 INFO L479 AbstractCegarLoop]: Abstraction has 932 states and 2423 transitions. [2020-04-18 03:10:00,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 03:10:00,789 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 2423 transitions. [2020-04-18 03:10:00,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:10:00,791 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:00,791 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:00,792 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-18 03:10:00,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:00,792 INFO L82 PathProgramCache]: Analyzing trace with hash -421440302, now seen corresponding path program 2 times [2020-04-18 03:10:00,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:00,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698103029] [2020-04-18 03:10:00,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:10:01,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698103029] [2020-04-18 03:10:01,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:10:01,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-04-18 03:10:01,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484437074] [2020-04-18 03:10:01,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 03:10:01,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:01,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 03:10:01,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-04-18 03:10:01,237 INFO L87 Difference]: Start difference. First operand 932 states and 2423 transitions. Second operand 17 states. [2020-04-18 03:10:02,161 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2020-04-18 03:10:02,298 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-04-18 03:10:02,749 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 47 [2020-04-18 03:10:02,883 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-04-18 03:10:03,458 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 45 [2020-04-18 03:10:03,618 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2020-04-18 03:10:03,790 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 44 [2020-04-18 03:10:03,925 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 36 [2020-04-18 03:10:04,131 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49 [2020-04-18 03:10:04,355 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 43 [2020-04-18 03:10:04,604 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-04-18 03:10:04,744 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-04-18 03:10:05,168 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 49 [2020-04-18 03:10:05,353 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 41 [2020-04-18 03:10:05,551 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 48 [2020-04-18 03:10:05,710 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 40 [2020-04-18 03:10:05,859 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2020-04-18 03:10:06,007 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 40 [2020-04-18 03:10:06,352 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 53 [2020-04-18 03:10:06,578 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 47 [2020-04-18 03:10:06,783 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 47 [2020-04-18 03:10:08,043 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2020-04-18 03:10:08,263 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48 [2020-04-18 03:10:08,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:08,445 INFO L93 Difference]: Finished difference Result 1504 states and 3729 transitions. [2020-04-18 03:10:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-04-18 03:10:08,446 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2020-04-18 03:10:08,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:08,454 INFO L225 Difference]: With dead ends: 1504 [2020-04-18 03:10:08,454 INFO L226 Difference]: Without dead ends: 1485 [2020-04-18 03:10:08,455 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=918, Invalid=3638, Unknown=0, NotChecked=0, Total=4556 [2020-04-18 03:10:08,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2020-04-18 03:10:08,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 923. [2020-04-18 03:10:08,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2020-04-18 03:10:08,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 2400 transitions. [2020-04-18 03:10:08,479 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 2400 transitions. Word has length 25 [2020-04-18 03:10:08,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:08,479 INFO L479 AbstractCegarLoop]: Abstraction has 923 states and 2400 transitions. [2020-04-18 03:10:08,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 03:10:08,480 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 2400 transitions. [2020-04-18 03:10:08,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:10:08,482 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:08,482 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:08,482 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-18 03:10:08,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:08,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1646732586, now seen corresponding path program 3 times [2020-04-18 03:10:08,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:08,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116215579] [2020-04-18 03:10:08,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:10:08,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116215579] [2020-04-18 03:10:08,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:10:08,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-04-18 03:10:08,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107164566] [2020-04-18 03:10:08,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:10:08,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:08,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:10:08,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:10:08,917 INFO L87 Difference]: Start difference. First operand 923 states and 2400 transitions. Second operand 16 states. [2020-04-18 03:10:09,546 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-04-18 03:10:09,686 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2020-04-18 03:10:09,866 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2020-04-18 03:10:10,015 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2020-04-18 03:10:10,257 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 61 [2020-04-18 03:10:10,579 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-04-18 03:10:10,714 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-04-18 03:10:11,001 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2020-04-18 03:10:11,197 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2020-04-18 03:10:11,372 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2020-04-18 03:10:11,626 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2020-04-18 03:10:13,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:13,147 INFO L93 Difference]: Finished difference Result 1645 states and 4025 transitions. [2020-04-18 03:10:13,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-04-18 03:10:13,148 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 25 [2020-04-18 03:10:13,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:13,156 INFO L225 Difference]: With dead ends: 1645 [2020-04-18 03:10:13,156 INFO L226 Difference]: Without dead ends: 1611 [2020-04-18 03:10:13,157 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=696, Invalid=1374, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 03:10:13,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-04-18 03:10:13,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 924. [2020-04-18 03:10:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-04-18 03:10:13,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 2395 transitions. [2020-04-18 03:10:13,180 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 2395 transitions. Word has length 25 [2020-04-18 03:10:13,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:13,181 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 2395 transitions. [2020-04-18 03:10:13,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:10:13,181 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 2395 transitions. [2020-04-18 03:10:13,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:10:13,183 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:13,184 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:13,184 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-18 03:10:13,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:13,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1982583190, now seen corresponding path program 3 times [2020-04-18 03:10:13,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:13,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945186088] [2020-04-18 03:10:13,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:10:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:10:13,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945186088] [2020-04-18 03:10:13,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:10:13,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-18 03:10:13,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106648686] [2020-04-18 03:10:13,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 03:10:13,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:10:13,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 03:10:13,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:10:13,962 INFO L87 Difference]: Start difference. First operand 924 states and 2395 transitions. Second operand 15 states. [2020-04-18 03:10:14,242 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-04-18 03:10:14,443 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2020-04-18 03:10:14,746 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2020-04-18 03:10:14,970 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-04-18 03:10:15,337 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2020-04-18 03:10:15,552 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2020-04-18 03:10:15,958 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2020-04-18 03:10:16,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:10:16,538 INFO L93 Difference]: Finished difference Result 1273 states and 3263 transitions. [2020-04-18 03:10:16,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-04-18 03:10:16,539 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2020-04-18 03:10:16,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:10:16,545 INFO L225 Difference]: With dead ends: 1273 [2020-04-18 03:10:16,545 INFO L226 Difference]: Without dead ends: 1270 [2020-04-18 03:10:16,546 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870 [2020-04-18 03:10:16,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2020-04-18 03:10:16,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1084. [2020-04-18 03:10:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1084 states. [2020-04-18 03:10:16,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 2873 transitions. [2020-04-18 03:10:16,570 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 2873 transitions. Word has length 25 [2020-04-18 03:10:16,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:10:16,570 INFO L479 AbstractCegarLoop]: Abstraction has 1084 states and 2873 transitions. [2020-04-18 03:10:16,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 03:10:16,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 2873 transitions. [2020-04-18 03:10:16,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 03:10:16,573 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:10:16,573 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:10:16,573 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-18 03:10:16,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:10:16,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1689584038, now seen corresponding path program 2 times [2020-04-18 03:10:16,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:10:16,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388346132] [2020-04-18 03:10:16,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:10:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:10:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:10:16,629 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 03:10:16,629 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 03:10:16,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:10:16 BasicIcfg [2020-04-18 03:10:16,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 03:10:16,686 INFO L168 Benchmark]: Toolchain (without parser) took 42228.96 ms. Allocated memory was 136.3 MB in the beginning and 496.0 MB in the end (delta: 359.7 MB). Free memory was 99.0 MB in the beginning and 399.5 MB in the end (delta: -300.6 MB). Peak memory consumption was 59.1 MB. Max. memory is 7.1 GB. [2020-04-18 03:10:16,687 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 03:10:16,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.53 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 96.9 MB in the beginning and 176.9 MB in the end (delta: -80.0 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-18 03:10:16,688 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.10 ms. Allocated memory is still 199.8 MB. Free memory was 176.9 MB in the beginning and 175.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 03:10:16,689 INFO L168 Benchmark]: Boogie Preprocessor took 19.89 ms. Allocated memory is still 199.8 MB. Free memory was 175.6 MB in the beginning and 174.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 03:10:16,689 INFO L168 Benchmark]: RCFGBuilder took 380.88 ms. Allocated memory is still 199.8 MB. Free memory was 174.2 MB in the beginning and 156.2 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-04-18 03:10:16,690 INFO L168 Benchmark]: TraceAbstraction took 41426.85 ms. Allocated memory was 199.8 MB in the beginning and 496.0 MB in the end (delta: 296.2 MB). Free memory was 156.2 MB in the beginning and 399.5 MB in the end (delta: -243.3 MB). Peak memory consumption was 53.0 MB. Max. memory is 7.1 GB. [2020-04-18 03:10:16,693 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 343.53 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 96.9 MB in the beginning and 176.9 MB in the end (delta: -80.0 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 38.10 ms. Allocated memory is still 199.8 MB. Free memory was 176.9 MB in the beginning and 175.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.89 ms. Allocated memory is still 199.8 MB. Free memory was 175.6 MB in the beginning and 174.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 380.88 ms. Allocated memory is still 199.8 MB. Free memory was 174.2 MB in the beginning and 156.2 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41426.85 ms. Allocated memory was 199.8 MB in the beginning and 496.0 MB in the end (delta: 296.2 MB). Free memory was 156.2 MB in the beginning and 399.5 MB in the end (delta: -243.3 MB). Peak memory consumption was 53.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 81 ProgramPointsBefore, 39 ProgramPointsAfterwards, 77 TransitionsBefore, 35 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 494 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1623 CheckedPairsTotal, 43 TotalNumberOfCompositions - CounterExampleResult [Line: 37]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 int counter = 0; [L23] 0 int val = 0; [L25] 0 pthread_t first_thread_id; [L26] 0 pthread_t second_thread_id; [L27] 0 pthread_t third_thread_id; [L29] FCALL, FORK 0 pthread_create(&first_thread_id, NULL, foo, &val) VAL [counter=0, n={8:0}] [L30] FCALL, FORK 0 pthread_create(&second_thread_id, NULL, foo, &val) VAL [counter=0, n={8:0}] [L16] 2 int *x = (int *)n; [L17] 2 ++counter VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L31] FCALL, FORK 0 pthread_create(&third_thread_id, NULL, foo, &val) VAL [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}] [L16] 3 int *x = (int *)n; [L17] EXPR 3 ++counter VAL [++counter=1, counter=1, n={8:0}, n={8:0}, x={8:0}] [L17] 3 *x = ++counter [L18] 3 return 0; [L17] 2 ++counter VAL [++counter=1, \result={0:0}, counter=2, n={8:0}, n={8:0}, x={8:0}] [L16] 1 int *x = (int *)n; [L17] EXPR 1 ++counter VAL [++counter=3, \result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L33] 0 \read(first_thread_id) VAL [++counter=3, \result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L17] 1 *x = ++counter [L18] 1 return 0; [L17] 2 *x = ++counter [L18] 2 return 0; [L33] FCALL, JOIN 1 pthread_join(first_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L34] 0 \read(second_thread_id) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L34] FCALL, JOIN 2 pthread_join(second_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L35] 0 \read(third_thread_id) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L35] FCALL, JOIN 3 pthread_join(third_thread_id, NULL) VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] [L37] FCALL 0 IdentifierExpression[val] [L37] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.2s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 33.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 444 SDtfs, 2425 SDslu, 2713 SDs, 0 SdLazy, 7775 SolverSat, 506 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 382 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 368 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3903 ImplicationChecksByTransitivity, 28.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1084occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 3668 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 275 NumberOfCodeBlocks, 275 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 240 ConstructedInterpolants, 0 QuantifiedInterpolants, 147336 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...