/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 15:03:57,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 15:03:57,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 15:03:57,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 15:03:57,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 15:03:57,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 15:03:57,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 15:03:57,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 15:03:57,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 15:03:57,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 15:03:57,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 15:03:57,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 15:03:57,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 15:03:57,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 15:03:57,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 15:03:57,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 15:03:57,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 15:03:57,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 15:03:57,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 15:03:57,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 15:03:57,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 15:03:57,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 15:03:57,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 15:03:57,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 15:03:57,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-17 15:03:57,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 15:03:57,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 15:03:58,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 15:03:58,002 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-17 15:03:58,049 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 15:03:58,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 15:03:58,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 15:03:58,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 15:03:58,053 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 15:03:58,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 15:03:58,053 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 15:03:58,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 15:03:58,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 15:03:58,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 15:03:58,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 15:03:58,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 15:03:58,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 15:03:58,056 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 15:03:58,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 15:03:58,057 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 15:03:58,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 15:03:58,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 15:03:58,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 15:03:58,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 15:03:58,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 15:03:58,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 15:03:58,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 15:03:58,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-17 15:03:58,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 15:03:58,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 15:03:58,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 15:03:58,059 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-17 15:03:58,060 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-17 15:03:58,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 15:03:58,060 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-17 15:03:58,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 15:03:58,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 15:03:58,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 15:03:58,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 15:03:58,535 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 15:03:58,537 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2020-09-17 15:03:58,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e646db7d2/b31d101f379744be942e374eb76dc37d/FLAG9b86b412b [2020-09-17 15:03:59,330 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 15:03:59,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2020-09-17 15:03:59,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e646db7d2/b31d101f379744be942e374eb76dc37d/FLAG9b86b412b [2020-09-17 15:03:59,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e646db7d2/b31d101f379744be942e374eb76dc37d [2020-09-17 15:03:59,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 15:03:59,608 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 15:03:59,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 15:03:59,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 15:03:59,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 15:03:59,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 03:03:59" (1/1) ... [2020-09-17 15:03:59,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65f87450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:03:59, skipping insertion in model container [2020-09-17 15:03:59,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 03:03:59" (1/1) ... [2020-09-17 15:03:59,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 15:03:59,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 15:04:00,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 15:04:00,254 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 15:04:00,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 15:04:00,385 INFO L208 MainTranslator]: Completed translation [2020-09-17 15:04:00,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:04:00 WrapperNode [2020-09-17 15:04:00,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 15:04:00,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 15:04:00,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 15:04:00,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 15:04:00,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:04:00" (1/1) ... [2020-09-17 15:04:00,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:04:00" (1/1) ... [2020-09-17 15:04:00,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 15:04:00,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 15:04:00,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 15:04:00,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 15:04:00,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:04:00" (1/1) ... [2020-09-17 15:04:00,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:04:00" (1/1) ... [2020-09-17 15:04:00,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:04:00" (1/1) ... [2020-09-17 15:04:00,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:04:00" (1/1) ... [2020-09-17 15:04:00,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:04:00" (1/1) ... [2020-09-17 15:04:00,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:04:00" (1/1) ... [2020-09-17 15:04:00,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:04:00" (1/1) ... [2020-09-17 15:04:00,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 15:04:00,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 15:04:00,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 15:04:00,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 15:04:00,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:04:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 15:04:00,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-17 15:04:00,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 15:04:00,570 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2020-09-17 15:04:00,570 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2020-09-17 15:04:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 15:04:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 15:04:00,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 15:04:00,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 15:04:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2020-09-17 15:04:00,572 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2020-09-17 15:04:00,574 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 15:04:01,148 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 15:04:01,149 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-17 15:04:01,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 03:04:01 BoogieIcfgContainer [2020-09-17 15:04:01,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 15:04:01,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 15:04:01,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 15:04:01,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 15:04:01,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 03:03:59" (1/3) ... [2020-09-17 15:04:01,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66029ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 03:04:01, skipping insertion in model container [2020-09-17 15:04:01,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 03:04:00" (2/3) ... [2020-09-17 15:04:01,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66029ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 03:04:01, skipping insertion in model container [2020-09-17 15:04:01,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 03:04:01" (3/3) ... [2020-09-17 15:04:01,166 INFO L109 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2020-09-17 15:04:01,178 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 15:04:01,179 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-17 15:04:01,190 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 15:04:01,192 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 15:04:01,227 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,228 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,228 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,228 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,229 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,229 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,229 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,229 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,230 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,230 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,230 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,231 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,231 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,231 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,231 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,232 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,232 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,232 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,232 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,233 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,233 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,233 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,234 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,234 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,234 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,234 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,235 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,235 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,235 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,236 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,236 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,236 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,236 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,237 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,237 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,237 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,237 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,238 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,242 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,243 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,243 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,243 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,243 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,243 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,248 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,248 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,248 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,249 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,249 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,249 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,249 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,257 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,258 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,258 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,258 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,258 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,259 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,263 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,263 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,263 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,263 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,264 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,264 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,264 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 15:04:01,315 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-17 15:04:01,341 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 15:04:01,341 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 15:04:01,341 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-17 15:04:01,341 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-17 15:04:01,342 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 15:04:01,342 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 15:04:01,342 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 15:04:01,342 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 15:04:01,361 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 100 transitions, 268 flow [2020-09-17 15:04:01,364 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 100 transitions, 268 flow [2020-09-17 15:04:01,436 INFO L129 PetriNetUnfolder]: 19/134 cut-off events. [2020-09-17 15:04:01,436 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-09-17 15:04:01,447 INFO L80 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 134 events. 19/134 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 336 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 91. Up to 12 conditions per place. [2020-09-17 15:04:01,453 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 100 transitions, 268 flow [2020-09-17 15:04:01,489 INFO L129 PetriNetUnfolder]: 19/134 cut-off events. [2020-09-17 15:04:01,490 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-09-17 15:04:01,492 INFO L80 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 134 events. 19/134 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 336 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 91. Up to 12 conditions per place. [2020-09-17 15:04:01,496 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2448 [2020-09-17 15:04:01,497 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-17 15:04:02,987 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-09-17 15:04:03,094 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-09-17 15:04:03,119 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6576 [2020-09-17 15:04:03,119 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2020-09-17 15:04:03,124 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 55 transitions, 178 flow [2020-09-17 15:04:03,473 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 4306 states. [2020-09-17 15:04:03,477 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states. [2020-09-17 15:04:03,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 15:04:03,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 15:04:03,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 15:04:03,490 INFO L427 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 15:04:03,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 15:04:03,498 INFO L82 PathProgramCache]: Analyzing trace with hash -947191722, now seen corresponding path program 1 times [2020-09-17 15:04:03,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 15:04:03,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144404918] [2020-09-17 15:04:03,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 15:04:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 15:04:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 15:04:03,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144404918] [2020-09-17 15:04:03,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 15:04:03,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 15:04:03,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2027745542] [2020-09-17 15:04:03,867 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 15:04:03,871 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 15:04:03,889 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-17 15:04:03,889 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 15:04:03,891 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 15:04:03,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 15:04:03,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 15:04:03,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 15:04:03,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 15:04:03,916 INFO L87 Difference]: Start difference. First operand 4306 states. Second operand 4 states. [2020-09-17 15:04:04,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 15:04:04,268 INFO L93 Difference]: Finished difference Result 9727 states and 31398 transitions. [2020-09-17 15:04:04,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 15:04:04,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-17 15:04:04,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 15:04:04,400 INFO L225 Difference]: With dead ends: 9727 [2020-09-17 15:04:04,400 INFO L226 Difference]: Without dead ends: 7325 [2020-09-17 15:04:04,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 15:04:04,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7325 states. [2020-09-17 15:04:04,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7325 to 4376. [2020-09-17 15:04:04,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4376 states. [2020-09-17 15:04:04,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 14751 transitions. [2020-09-17 15:04:04,784 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 14751 transitions. Word has length 8 [2020-09-17 15:04:04,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 15:04:04,784 INFO L479 AbstractCegarLoop]: Abstraction has 4376 states and 14751 transitions. [2020-09-17 15:04:04,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 15:04:04,785 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 14751 transitions. [2020-09-17 15:04:04,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-17 15:04:04,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 15:04:04,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 15:04:04,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 15:04:04,788 INFO L427 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 15:04:04,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 15:04:04,788 INFO L82 PathProgramCache]: Analyzing trace with hash 284128253, now seen corresponding path program 1 times [2020-09-17 15:04:04,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 15:04:04,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714014944] [2020-09-17 15:04:04,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 15:04:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 15:04:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 15:04:04,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714014944] [2020-09-17 15:04:04,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 15:04:04,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 15:04:04,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1787571245] [2020-09-17 15:04:04,924 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 15:04:04,925 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 15:04:04,928 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-09-17 15:04:04,928 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 15:04:04,947 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [27203#(not (= ~r~0 0))] [2020-09-17 15:04:04,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 15:04:04,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 15:04:04,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 15:04:04,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 15:04:04,950 INFO L87 Difference]: Start difference. First operand 4376 states and 14751 transitions. Second operand 5 states. [2020-09-17 15:04:05,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 15:04:05,055 INFO L93 Difference]: Finished difference Result 6872 states and 20348 transitions. [2020-09-17 15:04:05,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 15:04:05,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-17 15:04:05,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 15:04:05,178 INFO L225 Difference]: With dead ends: 6872 [2020-09-17 15:04:05,178 INFO L226 Difference]: Without dead ends: 6776 [2020-09-17 15:04:05,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 15:04:05,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6776 states. [2020-09-17 15:04:05,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6776 to 4772. [2020-09-17 15:04:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4772 states. [2020-09-17 15:04:05,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 14625 transitions. [2020-09-17 15:04:05,401 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 14625 transitions. Word has length 10 [2020-09-17 15:04:05,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 15:04:05,401 INFO L479 AbstractCegarLoop]: Abstraction has 4772 states and 14625 transitions. [2020-09-17 15:04:05,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 15:04:05,402 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 14625 transitions. [2020-09-17 15:04:05,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-17 15:04:05,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 15:04:05,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 15:04:05,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 15:04:05,404 INFO L427 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 15:04:05,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 15:04:05,405 INFO L82 PathProgramCache]: Analyzing trace with hash 78570353, now seen corresponding path program 2 times [2020-09-17 15:04:05,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 15:04:05,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651196303] [2020-09-17 15:04:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 15:04:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 15:04:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 15:04:05,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651196303] [2020-09-17 15:04:05,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 15:04:05,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 15:04:05,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1985791518] [2020-09-17 15:04:05,460 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 15:04:05,461 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 15:04:05,464 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-09-17 15:04:05,464 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 15:04:05,477 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 15:04:05,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 15:04:05,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 15:04:05,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 15:04:05,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 15:04:05,479 INFO L87 Difference]: Start difference. First operand 4772 states and 14625 transitions. Second operand 3 states. [2020-09-17 15:04:05,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 15:04:05,526 INFO L93 Difference]: Finished difference Result 2244 states and 5528 transitions. [2020-09-17 15:04:05,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 15:04:05,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-17 15:04:05,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 15:04:05,553 INFO L225 Difference]: With dead ends: 2244 [2020-09-17 15:04:05,553 INFO L226 Difference]: Without dead ends: 2180 [2020-09-17 15:04:05,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 15:04:05,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2020-09-17 15:04:05,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 2180. [2020-09-17 15:04:05,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2180 states. [2020-09-17 15:04:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 5394 transitions. [2020-09-17 15:04:05,622 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 5394 transitions. Word has length 10 [2020-09-17 15:04:05,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 15:04:05,622 INFO L479 AbstractCegarLoop]: Abstraction has 2180 states and 5394 transitions. [2020-09-17 15:04:05,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 15:04:05,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 5394 transitions. [2020-09-17 15:04:05,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 15:04:05,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 15:04:05,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 15:04:05,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 15:04:05,630 INFO L427 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 15:04:05,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 15:04:05,630 INFO L82 PathProgramCache]: Analyzing trace with hash 704389695, now seen corresponding path program 1 times [2020-09-17 15:04:05,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 15:04:05,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967868947] [2020-09-17 15:04:05,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 15:04:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 15:04:05,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 15:04:05,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967868947] [2020-09-17 15:04:05,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 15:04:05,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 15:04:05,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1900867203] [2020-09-17 15:04:05,737 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 15:04:05,739 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 15:04:05,744 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-09-17 15:04:05,744 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 15:04:05,744 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-17 15:04:05,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 15:04:05,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 15:04:05,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 15:04:05,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 15:04:05,746 INFO L87 Difference]: Start difference. First operand 2180 states and 5394 transitions. Second operand 4 states. [2020-09-17 15:04:05,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 15:04:05,821 INFO L93 Difference]: Finished difference Result 2507 states and 6115 transitions. [2020-09-17 15:04:05,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 15:04:05,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-17 15:04:05,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 15:04:05,828 INFO L225 Difference]: With dead ends: 2507 [2020-09-17 15:04:05,828 INFO L226 Difference]: Without dead ends: 1814 [2020-09-17 15:04:05,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 15:04:05,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2020-09-17 15:04:05,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1440. [2020-09-17 15:04:05,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1440 states. [2020-09-17 15:04:05,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 3564 transitions. [2020-09-17 15:04:05,876 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 3564 transitions. Word has length 12 [2020-09-17 15:04:05,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 15:04:05,877 INFO L479 AbstractCegarLoop]: Abstraction has 1440 states and 3564 transitions. [2020-09-17 15:04:05,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 15:04:05,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 3564 transitions. [2020-09-17 15:04:05,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 15:04:05,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 15:04:05,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 15:04:05,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 15:04:05,881 INFO L427 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 15:04:05,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 15:04:05,882 INFO L82 PathProgramCache]: Analyzing trace with hash 285424347, now seen corresponding path program 1 times [2020-09-17 15:04:05,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 15:04:05,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571370242] [2020-09-17 15:04:05,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 15:04:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 15:04:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 15:04:05,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571370242] [2020-09-17 15:04:05,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 15:04:05,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 15:04:05,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1407926694] [2020-09-17 15:04:05,995 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 15:04:05,998 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 15:04:06,006 INFO L274 McrAutomatonBuilder]: Finished intersection with 43 states and 65 transitions. [2020-09-17 15:04:06,007 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 15:04:06,154 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [55625#(not (= ~r~0 0))] [2020-09-17 15:04:06,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 15:04:06,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 15:04:06,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 15:04:06,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-17 15:04:06,156 INFO L87 Difference]: Start difference. First operand 1440 states and 3564 transitions. Second operand 6 states. [2020-09-17 15:04:06,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 15:04:06,213 INFO L93 Difference]: Finished difference Result 1734 states and 4180 transitions. [2020-09-17 15:04:06,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 15:04:06,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-17 15:04:06,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 15:04:06,219 INFO L225 Difference]: With dead ends: 1734 [2020-09-17 15:04:06,219 INFO L226 Difference]: Without dead ends: 1508 [2020-09-17 15:04:06,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-17 15:04:06,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2020-09-17 15:04:06,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1376. [2020-09-17 15:04:06,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2020-09-17 15:04:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 3414 transitions. [2020-09-17 15:04:06,335 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 3414 transitions. Word has length 19 [2020-09-17 15:04:06,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 15:04:06,336 INFO L479 AbstractCegarLoop]: Abstraction has 1376 states and 3414 transitions. [2020-09-17 15:04:06,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 15:04:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 3414 transitions. [2020-09-17 15:04:06,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-17 15:04:06,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 15:04:06,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 15:04:06,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 15:04:06,338 INFO L427 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-17 15:04:06,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 15:04:06,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1336794727, now seen corresponding path program 2 times [2020-09-17 15:04:06,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 15:04:06,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465303322] [2020-09-17 15:04:06,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 15:04:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 15:04:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 15:04:06,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465303322] [2020-09-17 15:04:06,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 15:04:06,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 15:04:06,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1065021935] [2020-09-17 15:04:06,429 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-17 15:04:06,433 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-17 15:04:06,440 INFO L274 McrAutomatonBuilder]: Finished intersection with 49 states and 76 transitions. [2020-09-17 15:04:06,440 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-17 15:04:06,525 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [60117#(<= 0 ~r~0)] [2020-09-17 15:04:06,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 15:04:06,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 15:04:06,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 15:04:06,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-17 15:04:06,527 INFO L87 Difference]: Start difference. First operand 1376 states and 3414 transitions. Second operand 6 states. [2020-09-17 15:04:06,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 15:04:06,556 INFO L93 Difference]: Finished difference Result 530 states and 1160 transitions. [2020-09-17 15:04:06,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 15:04:06,557 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-17 15:04:06,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 15:04:06,558 INFO L225 Difference]: With dead ends: 530 [2020-09-17 15:04:06,558 INFO L226 Difference]: Without dead ends: 0 [2020-09-17 15:04:06,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-17 15:04:06,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-17 15:04:06,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-17 15:04:06,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-17 15:04:06,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-17 15:04:06,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-17 15:04:06,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 15:04:06,560 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-17 15:04:06,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 15:04:06,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-17 15:04:06,560 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-17 15:04:06,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 15:04:06,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 03:04:06 BasicIcfg [2020-09-17 15:04:06,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-17 15:04:06,568 INFO L168 Benchmark]: Toolchain (without parser) took 6964.41 ms. Allocated memory was 140.5 MB in the beginning and 308.3 MB in the end (delta: 167.8 MB). Free memory was 98.9 MB in the beginning and 200.9 MB in the end (delta: -102.0 MB). Peak memory consumption was 65.8 MB. Max. memory is 7.1 GB. [2020-09-17 15:04:06,569 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-17 15:04:06,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 775.77 ms. Allocated memory was 140.5 MB in the beginning and 201.3 MB in the end (delta: 60.8 MB). Free memory was 98.2 MB in the beginning and 159.8 MB in the end (delta: -61.6 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-17 15:04:06,571 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.78 ms. Allocated memory is still 201.3 MB. Free memory was 159.8 MB in the beginning and 157.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-17 15:04:06,572 INFO L168 Benchmark]: Boogie Preprocessor took 32.30 ms. Allocated memory is still 201.3 MB. Free memory was 157.8 MB in the beginning and 156.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-17 15:04:06,573 INFO L168 Benchmark]: RCFGBuilder took 669.46 ms. Allocated memory is still 201.3 MB. Free memory was 156.4 MB in the beginning and 123.8 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2020-09-17 15:04:06,573 INFO L168 Benchmark]: TraceAbstraction took 5409.25 ms. Allocated memory was 201.3 MB in the beginning and 308.3 MB in the end (delta: 107.0 MB). Free memory was 123.1 MB in the beginning and 200.9 MB in the end (delta: -77.9 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-09-17 15:04:06,578 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 775.77 ms. Allocated memory was 140.5 MB in the beginning and 201.3 MB in the end (delta: 60.8 MB). Free memory was 98.2 MB in the beginning and 159.8 MB in the end (delta: -61.6 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 64.78 ms. Allocated memory is still 201.3 MB. Free memory was 159.8 MB in the beginning and 157.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.30 ms. Allocated memory is still 201.3 MB. Free memory was 157.8 MB in the beginning and 156.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 669.46 ms. Allocated memory is still 201.3 MB. Free memory was 156.4 MB in the beginning and 123.8 MB in the end (delta: 32.6 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5409.25 ms. Allocated memory was 201.3 MB in the beginning and 308.3 MB in the end (delta: 107.0 MB). Free memory was 123.1 MB in the beginning and 200.9 MB in the end (delta: -77.9 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 99 ProgramPointsBefore, 56 ProgramPointsAfterwards, 100 TransitionsBefore, 55 TransitionsAfterwards, 2448 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 994 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 6576 CheckedPairsTotal, 45 TotalNumberOfCompositions - PositiveResult [Line: 700]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 462 SDtfs, 422 SDslu, 599 SDs, 0 SdLazy, 149 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4772occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 6 MinimizatonAttempts, 5459 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 2258 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 correct! Received shutdown request...