/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 17:07:07,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 17:07:07,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 17:07:07,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 17:07:07,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 17:07:07,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 17:07:07,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 17:07:07,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 17:07:07,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 17:07:07,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 17:07:07,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 17:07:07,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 17:07:07,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 17:07:07,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 17:07:07,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 17:07:07,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 17:07:07,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 17:07:07,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 17:07:07,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 17:07:07,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 17:07:07,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 17:07:07,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 17:07:07,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 17:07:07,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 17:07:07,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 17:07:07,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 17:07:07,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 17:07:07,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 17:07:07,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 17:07:07,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 17:07:07,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 17:07:07,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 17:07:07,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 17:07:07,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 17:07:07,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 17:07:07,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 17:07:07,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 17:07:07,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 17:07:07,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 17:07:07,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 17:07:07,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 17:07:07,956 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-SP.epf [2020-11-09 17:07:07,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 17:07:07,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 17:07:07,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 17:07:07,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 17:07:07,988 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 17:07:07,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 17:07:07,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 17:07:07,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 17:07:07,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 17:07:07,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 17:07:07,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 17:07:07,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 17:07:07,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 17:07:07,990 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 17:07:07,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 17:07:07,990 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 17:07:07,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 17:07:07,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 17:07:07,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 17:07:07,991 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 17:07:07,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 17:07:07,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:07:07,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 17:07:07,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 17:07:07,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 17:07:07,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 17:07:07,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 17:07:07,993 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 17:07:07,993 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 17:07:07,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 17:07:07,993 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 17:07:08,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 17:07:08,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 17:07:08,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 17:07:08,424 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 17:07:08,424 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 17:07:08,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-11-09 17:07:08,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/739be9dbb/4903253d4a8d4fb3bb26f6ddd0fdd550/FLAGeafbcd516 [2020-11-09 17:07:09,235 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 17:07:09,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-11-09 17:07:09,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/739be9dbb/4903253d4a8d4fb3bb26f6ddd0fdd550/FLAGeafbcd516 [2020-11-09 17:07:09,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/739be9dbb/4903253d4a8d4fb3bb26f6ddd0fdd550 [2020-11-09 17:07:09,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 17:07:09,488 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 17:07:09,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 17:07:09,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 17:07:09,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 17:07:09,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:07:09" (1/1) ... [2020-11-09 17:07:09,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5733516f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:09, skipping insertion in model container [2020-11-09 17:07:09,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:07:09" (1/1) ... [2020-11-09 17:07:09,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 17:07:09,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 17:07:10,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:07:10,147 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 17:07:10,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:07:10,405 INFO L208 MainTranslator]: Completed translation [2020-11-09 17:07:10,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:10 WrapperNode [2020-11-09 17:07:10,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 17:07:10,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 17:07:10,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 17:07:10,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 17:07:10,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:10" (1/1) ... [2020-11-09 17:07:10,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:10" (1/1) ... [2020-11-09 17:07:10,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 17:07:10,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 17:07:10,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 17:07:10,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 17:07:10,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:10" (1/1) ... [2020-11-09 17:07:10,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:10" (1/1) ... [2020-11-09 17:07:10,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:10" (1/1) ... [2020-11-09 17:07:10,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:10" (1/1) ... [2020-11-09 17:07:10,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:10" (1/1) ... [2020-11-09 17:07:10,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:10" (1/1) ... [2020-11-09 17:07:10,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:10" (1/1) ... [2020-11-09 17:07:10,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 17:07:10,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 17:07:10,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 17:07:10,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 17:07:10,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:10" (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 [2020-11-09 17:07:10,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 17:07:10,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 17:07:10,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 17:07:10,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 17:07:10,650 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 17:07:10,650 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 17:07:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 17:07:10,651 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 17:07:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 17:07:10,651 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 17:07:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 17:07:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 17:07:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 17:07:10,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 17:07:10,653 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 17:07:11,072 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 17:07:11,073 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 17:07:11,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:07:11 BoogieIcfgContainer [2020-11-09 17:07:11,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 17:07:11,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 17:07:11,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 17:07:11,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 17:07:11,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:07:09" (1/3) ... [2020-11-09 17:07:11,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4659ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:07:11, skipping insertion in model container [2020-11-09 17:07:11,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:07:10" (2/3) ... [2020-11-09 17:07:11,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4659ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:07:11, skipping insertion in model container [2020-11-09 17:07:11,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:07:11" (3/3) ... [2020-11-09 17:07:11,086 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-11-09 17:07:11,105 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 17:07:11,106 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 17:07:11,109 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 17:07:11,110 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 17:07:11,144 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,145 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,145 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,145 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,145 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,146 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,146 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,146 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,147 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,147 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,147 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,147 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,148 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,148 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,148 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,149 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,149 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,149 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,149 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,149 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,150 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,150 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,150 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,151 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,151 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,151 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,151 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,152 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,152 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,152 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,152 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,153 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,153 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,153 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,154 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,154 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,156 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,157 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,157 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,157 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,164 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,164 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,165 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,165 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,168 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,168 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,168 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,169 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:07:11,171 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 17:07:11,186 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 17:07:11,212 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:07:11,213 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:07:11,213 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:07:11,213 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:07:11,213 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:07:11,214 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:07:11,214 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:07:11,214 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:07:11,229 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:07:11,230 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 76 transitions, 167 flow [2020-11-09 17:07:11,233 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 76 transitions, 167 flow [2020-11-09 17:07:11,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 76 transitions, 167 flow [2020-11-09 17:07:11,301 INFO L129 PetriNetUnfolder]: 3/73 cut-off events. [2020-11-09 17:07:11,302 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 17:07:11,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 3/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-09 17:07:11,312 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-09 17:07:14,356 WARN L194 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-09 17:07:14,641 WARN L194 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-09 17:07:14,754 INFO L131 LiptonReduction]: Checked pairs total: 2406 [2020-11-09 17:07:14,754 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-11-09 17:07:14,761 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 17:07:14,788 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-11-09 17:07:14,791 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-11-09 17:07:14,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:07:14,798 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:07:14,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:07:14,799 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:07:14,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:07:14,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1461766860, now seen corresponding path program 1 times [2020-11-09 17:07:14,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:07:14,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576297240] [2020-11-09 17:07:14,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:07:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:07:15,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:07:15,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576297240] [2020-11-09 17:07:15,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:07:15,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:07:15,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2095685726] [2020-11-09 17:07:15,010 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:07:15,013 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:07:15,026 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:07:15,026 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:07:15,031 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:07:15,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 17:07:15,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:07:15,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 17:07:15,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 17:07:15,052 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-11-09 17:07:15,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:07:15,073 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-11-09 17:07:15,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 17:07:15,075 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 17:07:15,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:07:15,090 INFO L225 Difference]: With dead ends: 274 [2020-11-09 17:07:15,090 INFO L226 Difference]: Without dead ends: 226 [2020-11-09 17:07:15,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 17:07:15,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-09 17:07:15,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-09 17:07:15,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-09 17:07:15,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-11-09 17:07:15,161 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-11-09 17:07:15,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:07:15,162 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-11-09 17:07:15,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 17:07:15,162 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-11-09 17:07:15,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 17:07:15,166 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:07:15,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:07:15,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 17:07:15,167 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:07:15,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:07:15,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1929876305, now seen corresponding path program 1 times [2020-11-09 17:07:15,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:07:15,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241200635] [2020-11-09 17:07:15,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:07:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:07:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:07:15,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241200635] [2020-11-09 17:07:15,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:07:15,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:07:15,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2028900370] [2020-11-09 17:07:15,317 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:07:15,335 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:07:15,338 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-11-09 17:07:15,342 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:07:15,343 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:07:15,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:07:15,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:07:15,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:07:15,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:07:15,347 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-11-09 17:07:15,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:07:15,420 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-11-09 17:07:15,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:07:15,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 17:07:15,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:07:15,424 INFO L225 Difference]: With dead ends: 250 [2020-11-09 17:07:15,424 INFO L226 Difference]: Without dead ends: 202 [2020-11-09 17:07:15,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:07:15,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-09 17:07:15,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-11-09 17:07:15,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-09 17:07:15,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-11-09 17:07:15,445 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-11-09 17:07:15,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:07:15,446 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-11-09 17:07:15,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:07:15,446 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-11-09 17:07:15,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 17:07:15,448 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:07:15,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:07:15,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 17:07:15,448 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:07:15,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:07:15,449 INFO L82 PathProgramCache]: Analyzing trace with hash 303350682, now seen corresponding path program 1 times [2020-11-09 17:07:15,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:07:15,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103387244] [2020-11-09 17:07:15,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:07:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:07:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:07:15,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103387244] [2020-11-09 17:07:15,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:07:15,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:07:15,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [608509699] [2020-11-09 17:07:15,513 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:07:15,514 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:07:15,516 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-11-09 17:07:15,516 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:07:15,542 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:07:15,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:07:15,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:07:15,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:07:15,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:07:15,548 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 4 states. [2020-11-09 17:07:15,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:07:15,582 INFO L93 Difference]: Finished difference Result 232 states and 608 transitions. [2020-11-09 17:07:15,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:07:15,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-09 17:07:15,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:07:15,585 INFO L225 Difference]: With dead ends: 232 [2020-11-09 17:07:15,585 INFO L226 Difference]: Without dead ends: 196 [2020-11-09 17:07:15,586 INFO L677 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 [2020-11-09 17:07:15,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-11-09 17:07:15,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-11-09 17:07:15,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-11-09 17:07:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-11-09 17:07:15,602 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-11-09 17:07:15,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:07:15,603 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-11-09 17:07:15,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:07:15,603 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-11-09 17:07:15,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 17:07:15,604 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:07:15,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:07:15,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 17:07:15,605 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:07:15,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:07:15,606 INFO L82 PathProgramCache]: Analyzing trace with hash 135657142, now seen corresponding path program 1 times [2020-11-09 17:07:15,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:07:15,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092772650] [2020-11-09 17:07:15,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:07:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:07:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:07:15,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092772650] [2020-11-09 17:07:15,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:07:15,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:07:15,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1687333569] [2020-11-09 17:07:15,672 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:07:15,673 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:07:15,676 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-11-09 17:07:15,677 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:07:15,768 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:07:15,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:07:15,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:07:15,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:07:15,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:07:15,773 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 5 states. [2020-11-09 17:07:15,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:07:15,853 INFO L93 Difference]: Finished difference Result 279 states and 742 transitions. [2020-11-09 17:07:15,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 17:07:15,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-09 17:07:15,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:07:15,864 INFO L225 Difference]: With dead ends: 279 [2020-11-09 17:07:15,865 INFO L226 Difference]: Without dead ends: 174 [2020-11-09 17:07:15,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-09 17:07:15,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-11-09 17:07:15,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-11-09 17:07:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-11-09 17:07:15,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 452 transitions. [2020-11-09 17:07:15,886 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 452 transitions. Word has length 11 [2020-11-09 17:07:15,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:07:15,887 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 452 transitions. [2020-11-09 17:07:15,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:07:15,887 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 452 transitions. [2020-11-09 17:07:15,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 17:07:15,894 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:07:15,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:07:15,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 17:07:15,895 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:07:15,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:07:15,896 INFO L82 PathProgramCache]: Analyzing trace with hash 90593002, now seen corresponding path program 1 times [2020-11-09 17:07:15,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:07:15,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243056136] [2020-11-09 17:07:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:07:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:07:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:07:16,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243056136] [2020-11-09 17:07:16,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:07:16,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 17:07:16,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1253638000] [2020-11-09 17:07:16,004 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:07:16,006 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:07:16,009 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 34 transitions. [2020-11-09 17:07:16,009 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:07:16,015 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:07:16,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:07:16,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:07:16,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:07:16,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:07:16,016 INFO L87 Difference]: Start difference. First operand 174 states and 452 transitions. Second operand 5 states. [2020-11-09 17:07:16,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:07:16,083 INFO L93 Difference]: Finished difference Result 316 states and 773 transitions. [2020-11-09 17:07:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 17:07:16,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 17:07:16,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:07:16,085 INFO L225 Difference]: With dead ends: 316 [2020-11-09 17:07:16,085 INFO L226 Difference]: Without dead ends: 174 [2020-11-09 17:07:16,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-09 17:07:16,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-11-09 17:07:16,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 150. [2020-11-09 17:07:16,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-11-09 17:07:16,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 358 transitions. [2020-11-09 17:07:16,096 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 358 transitions. Word has length 12 [2020-11-09 17:07:16,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:07:16,096 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 358 transitions. [2020-11-09 17:07:16,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:07:16,096 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 358 transitions. [2020-11-09 17:07:16,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 17:07:16,098 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:07:16,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:07:16,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 17:07:16,098 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:07:16,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:07:16,099 INFO L82 PathProgramCache]: Analyzing trace with hash -90307094, now seen corresponding path program 1 times [2020-11-09 17:07:16,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:07:16,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912657110] [2020-11-09 17:07:16,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:07:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:07:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:07:16,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912657110] [2020-11-09 17:07:16,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:07:16,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:07:16,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1648892915] [2020-11-09 17:07:16,213 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:07:16,216 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:07:16,220 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 46 transitions. [2020-11-09 17:07:16,220 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:07:16,260 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:07:16,297 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:07:16,312 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:07:16,327 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:07:16,347 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:07:16,422 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3924#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 17:07:16,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:07:16,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:07:16,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:07:16,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:07:16,424 INFO L87 Difference]: Start difference. First operand 150 states and 358 transitions. Second operand 5 states. [2020-11-09 17:07:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:07:16,506 INFO L93 Difference]: Finished difference Result 128 states and 264 transitions. [2020-11-09 17:07:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:07:16,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 17:07:16,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:07:16,507 INFO L225 Difference]: With dead ends: 128 [2020-11-09 17:07:16,508 INFO L226 Difference]: Without dead ends: 92 [2020-11-09 17:07:16,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:07:16,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-09 17:07:16,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-11-09 17:07:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-09 17:07:16,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 173 transitions. [2020-11-09 17:07:16,513 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 173 transitions. Word has length 12 [2020-11-09 17:07:16,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:07:16,513 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 173 transitions. [2020-11-09 17:07:16,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:07:16,513 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 173 transitions. [2020-11-09 17:07:16,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 17:07:16,514 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:07:16,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:07:16,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 17:07:16,515 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:07:16,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:07:16,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1274722541, now seen corresponding path program 1 times [2020-11-09 17:07:16,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:07:16,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576865708] [2020-11-09 17:07:16,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:07:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:07:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:07:16,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576865708] [2020-11-09 17:07:16,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:07:16,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:07:16,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1848683948] [2020-11-09 17:07:16,561 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:07:16,563 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:07:16,565 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 26 transitions. [2020-11-09 17:07:16,566 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:07:16,569 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:07:16,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:07:16,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:07:16,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:07:16,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:07:16,571 INFO L87 Difference]: Start difference. First operand 92 states and 173 transitions. Second operand 4 states. [2020-11-09 17:07:16,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:07:16,590 INFO L93 Difference]: Finished difference Result 104 states and 181 transitions. [2020-11-09 17:07:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:07:16,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-09 17:07:16,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:07:16,592 INFO L225 Difference]: With dead ends: 104 [2020-11-09 17:07:16,592 INFO L226 Difference]: Without dead ends: 70 [2020-11-09 17:07:16,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:07:16,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-09 17:07:16,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-11-09 17:07:16,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-09 17:07:16,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-11-09 17:07:16,596 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 14 [2020-11-09 17:07:16,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:07:16,597 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-11-09 17:07:16,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:07:16,597 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-11-09 17:07:16,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 17:07:16,598 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:07:16,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:07:16,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 17:07:16,598 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:07:16,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:07:16,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1788026541, now seen corresponding path program 1 times [2020-11-09 17:07:16,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:07:16,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104100495] [2020-11-09 17:07:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:07:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:07:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:07:16,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104100495] [2020-11-09 17:07:16,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:07:16,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 17:07:16,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [272000148] [2020-11-09 17:07:16,702 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:07:16,703 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:07:16,710 INFO L252 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-11-09 17:07:16,711 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:07:16,721 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:07:16,865 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4494#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 17:07:16,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 17:07:16,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:07:16,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 17:07:16,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:07:16,867 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 7 states. [2020-11-09 17:07:16,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:07:16,905 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-11-09 17:07:16,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 17:07:16,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-09 17:07:16,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:07:16,906 INFO L225 Difference]: With dead ends: 58 [2020-11-09 17:07:16,906 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 17:07:16,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-09 17:07:16,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 17:07:16,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 17:07:16,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 17:07:16,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 17:07:16,907 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-09 17:07:16,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:07:16,907 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 17:07:16,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 17:07:16,908 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 17:07:16,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 17:07:16,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 17:07:16,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:07:16 BasicIcfg [2020-11-09 17:07:16,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 17:07:16,921 INFO L168 Benchmark]: Toolchain (without parser) took 7433.05 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 125.6 MB in the beginning and 167.4 MB in the end (delta: -41.9 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:07:16,923 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:07:16,923 INFO L168 Benchmark]: CACSL2BoogieTranslator took 920.47 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 131.2 MB in the end (delta: -6.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. [2020-11-09 17:07:16,925 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.06 ms. Allocated memory is still 151.0 MB. Free memory was 131.2 MB in the beginning and 129.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:07:16,926 INFO L168 Benchmark]: Boogie Preprocessor took 58.18 ms. Allocated memory is still 151.0 MB. Free memory was 129.1 MB in the beginning and 128.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:07:16,926 INFO L168 Benchmark]: RCFGBuilder took 515.23 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 106.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:07:16,928 INFO L168 Benchmark]: TraceAbstraction took 5837.29 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 106.0 MB in the beginning and 167.4 MB in the end (delta: -61.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. [2020-11-09 17:07:16,934 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 920.47 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 131.2 MB in the end (delta: -6.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 88.06 ms. Allocated memory is still 151.0 MB. Free memory was 131.2 MB in the beginning and 129.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.18 ms. Allocated memory is still 151.0 MB. Free memory was 129.1 MB in the beginning and 128.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 515.23 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 106.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5837.29 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 106.0 MB in the beginning and 167.4 MB in the end (delta: -61.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 715 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 34 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.5s, 83 PlacesBefore, 31 PlacesAfterwards, 76 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2406 MoverChecksTotal - PositiveResult [Line: 17]: 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 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 181 SDtfs, 151 SDslu, 287 SDs, 0 SdLazy, 99 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 2494 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...