/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 00:23:15,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 00:23:15,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 00:23:15,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 00:23:15,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 00:23:15,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 00:23:15,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 00:23:15,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 00:23:15,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 00:23:15,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 00:23:15,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 00:23:15,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 00:23:15,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 00:23:15,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 00:23:15,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 00:23:15,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 00:23:15,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 00:23:15,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 00:23:15,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 00:23:15,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 00:23:15,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 00:23:15,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 00:23:15,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 00:23:15,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 00:23:15,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-17 00:23:15,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-17 00:23:15,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-17 00:23:15,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-17 00:23:15,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-17 00:23:15,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-17 00:23:15,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 00:23:15,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 00:23:15,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 00:23:15,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 00:23:15,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 00:23:15,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 00:23:15,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 00:23:15,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 00:23:15,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 00:23:15,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 00:23:15,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 00:23:15,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-17 00:23:16,027 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 00:23:16,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 00:23:16,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 00:23:16,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 00:23:16,029 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 00:23:16,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 00:23:16,029 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 00:23:16,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 00:23:16,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 00:23:16,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 00:23:16,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 00:23:16,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 00:23:16,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 00:23:16,031 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 00:23:16,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 00:23:16,031 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 00:23:16,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 00:23:16,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 00:23:16,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 00:23:16,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 00:23:16,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 00:23:16,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 00:23:16,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 00:23:16,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-17 00:23:16,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 00:23:16,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 00:23:16,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 00:23:16,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 00:23:16,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-17 00:23:16,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-17 00:23:16,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 00:23:16,483 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 00:23:16,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 00:23:16,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 00:23:16,493 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 00:23:16,494 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-09-17 00:23:16,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93aeae836/8486de44fd7f466aa8313dde99f0f61f/FLAGec0b892d2 [2020-09-17 00:23:17,230 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 00:23:17,231 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2020-09-17 00:23:17,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93aeae836/8486de44fd7f466aa8313dde99f0f61f/FLAGec0b892d2 [2020-09-17 00:23:17,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93aeae836/8486de44fd7f466aa8313dde99f0f61f [2020-09-17 00:23:17,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 00:23:17,498 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 00:23:17,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 00:23:17,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 00:23:17,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 00:23:17,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 12:23:17" (1/1) ... [2020-09-17 00:23:17,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e6a7531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:23:17, skipping insertion in model container [2020-09-17 00:23:17,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 12:23:17" (1/1) ... [2020-09-17 00:23:17,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 00:23:17,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 00:23:18,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 00:23:18,131 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 00:23:18,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 00:23:18,300 INFO L208 MainTranslator]: Completed translation [2020-09-17 00:23:18,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:23:18 WrapperNode [2020-09-17 00:23:18,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 00:23:18,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 00:23:18,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 00:23:18,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 00:23:18,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:23:18" (1/1) ... [2020-09-17 00:23:18,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:23:18" (1/1) ... [2020-09-17 00:23:18,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 00:23:18,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 00:23:18,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 00:23:18,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 00:23:18,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:23:18" (1/1) ... [2020-09-17 00:23:18,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:23:18" (1/1) ... [2020-09-17 00:23:18,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:23:18" (1/1) ... [2020-09-17 00:23:18,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:23:18" (1/1) ... [2020-09-17 00:23:18,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:23:18" (1/1) ... [2020-09-17 00:23:18,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:23:18" (1/1) ... [2020-09-17 00:23:18,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:23:18" (1/1) ... [2020-09-17 00:23:18,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 00:23:18,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 00:23:18,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 00:23:18,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 00:23:18,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:23:18" (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 00:23:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 00:23:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-17 00:23:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 00:23:18,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 00:23:18,482 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-17 00:23:18,482 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-17 00:23:18,482 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-17 00:23:18,482 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-17 00:23:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-17 00:23:18,483 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-17 00:23:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-17 00:23:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 00:23:18,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 00:23:18,486 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 00:23:18,912 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 00:23:18,913 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-17 00:23:18,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 12:23:18 BoogieIcfgContainer [2020-09-17 00:23:18,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 00:23:18,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 00:23:18,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 00:23:18,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 00:23:18,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 12:23:17" (1/3) ... [2020-09-17 00:23:18,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5ee77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 12:23:18, skipping insertion in model container [2020-09-17 00:23:18,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 12:23:18" (2/3) ... [2020-09-17 00:23:18,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5ee77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 12:23:18, skipping insertion in model container [2020-09-17 00:23:18,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 12:23:18" (3/3) ... [2020-09-17 00:23:18,929 INFO L109 eAbstractionObserver]: Analyzing ICFG safe021_tso.oepc.i [2020-09-17 00:23:18,940 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 00:23:18,941 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-17 00:23:18,952 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 00:23:18,953 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 00:23:18,982 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,982 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,983 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,983 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,983 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,984 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,984 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,984 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,985 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,985 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,985 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,986 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,986 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,986 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,987 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,987 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,987 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,987 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,992 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,992 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,993 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:18,993 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:19,002 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:19,002 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:19,002 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:19,003 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:19,007 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:19,007 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:19,008 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:19,008 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 00:23:19,031 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-17 00:23:19,054 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 00:23:19,054 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 00:23:19,055 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 00:23:19,055 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 00:23:19,055 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 00:23:19,055 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 00:23:19,055 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 00:23:19,056 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 00:23:19,073 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-17 00:23:19,075 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-17 00:23:19,122 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-17 00:23:19,122 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 00:23:19,131 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-17 00:23:19,134 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-17 00:23:19,156 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-17 00:23:19,156 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 00:23:19,157 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-17 00:23:19,159 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-17 00:23:19,161 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 00:23:20,672 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2250 [2020-09-17 00:23:20,672 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-09-17 00:23:20,677 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-17 00:23:20,707 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-17 00:23:20,710 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-17 00:23:20,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 00:23:20,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:23:20,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:23:20,721 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:23:20,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:23:20,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-09-17 00:23:20,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:23:20,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255417205] [2020-09-17 00:23:20,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:23:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:23:20,941 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 00:23:20,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255417205] [2020-09-17 00:23:20,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:23:20,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 00:23:20,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049815391] [2020-09-17 00:23:20,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-17 00:23:20,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:23:20,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-17 00:23:20,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-17 00:23:20,973 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-17 00:23:21,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:23:21,012 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-17 00:23:21,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-17 00:23:21,013 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-17 00:23:21,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:23:21,034 INFO L225 Difference]: With dead ends: 362 [2020-09-17 00:23:21,034 INFO L226 Difference]: Without dead ends: 298 [2020-09-17 00:23:21,036 INFO L675 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 [2020-09-17 00:23:21,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-17 00:23:21,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-17 00:23:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-17 00:23:21,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-17 00:23:21,122 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-17 00:23:21,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:23:21,123 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-17 00:23:21,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-17 00:23:21,123 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-17 00:23:21,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 00:23:21,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:23:21,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:23:21,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 00:23:21,129 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:23:21,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:23:21,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-09-17 00:23:21,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:23:21,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530292879] [2020-09-17 00:23:21,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:23:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:23:21,290 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 00:23:21,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530292879] [2020-09-17 00:23:21,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:23:21,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:23:21,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202662808] [2020-09-17 00:23:21,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:23:21,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:23:21,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:23:21,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:23:21,295 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-09-17 00:23:21,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:23:21,371 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-09-17 00:23:21,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-17 00:23:21,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-09-17 00:23:21,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:23:21,375 INFO L225 Difference]: With dead ends: 330 [2020-09-17 00:23:21,375 INFO L226 Difference]: Without dead ends: 266 [2020-09-17 00:23:21,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-17 00:23:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-17 00:23:21,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-09-17 00:23:21,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-17 00:23:21,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-09-17 00:23:21,399 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-09-17 00:23:21,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:23:21,399 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-09-17 00:23:21,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:23:21,400 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-09-17 00:23:21,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-17 00:23:21,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:23:21,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:23:21,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 00:23:21,402 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:23:21,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:23:21,402 INFO L82 PathProgramCache]: Analyzing trace with hash -397698604, now seen corresponding path program 1 times [2020-09-17 00:23:21,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:23:21,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880879804] [2020-09-17 00:23:21,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:23:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:23:21,546 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 00:23:21,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880879804] [2020-09-17 00:23:21,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:23:21,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 00:23:21,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433037382] [2020-09-17 00:23:21,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 00:23:21,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:23:21,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 00:23:21,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-17 00:23:21,551 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-09-17 00:23:21,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:23:21,653 INFO L93 Difference]: Finished difference Result 338 states and 914 transitions. [2020-09-17 00:23:21,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-17 00:23:21,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-09-17 00:23:21,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:23:21,655 INFO L225 Difference]: With dead ends: 338 [2020-09-17 00:23:21,656 INFO L226 Difference]: Without dead ends: 194 [2020-09-17 00:23:21,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-17 00:23:21,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-17 00:23:21,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-09-17 00:23:21,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-17 00:23:21,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 494 transitions. [2020-09-17 00:23:21,668 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 494 transitions. Word has length 10 [2020-09-17 00:23:21,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:23:21,668 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 494 transitions. [2020-09-17 00:23:21,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 00:23:21,669 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 494 transitions. [2020-09-17 00:23:21,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 00:23:21,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:23:21,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:23:21,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 00:23:21,671 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:23:21,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:23:21,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1820296279, now seen corresponding path program 1 times [2020-09-17 00:23:21,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:23:21,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188850788] [2020-09-17 00:23:21,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:23:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:23:21,757 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 00:23:21,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188850788] [2020-09-17 00:23:21,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:23:21,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:23:21,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275266466] [2020-09-17 00:23:21,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:23:21,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:23:21,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:23:21,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:23:21,763 INFO L87 Difference]: Start difference. First operand 194 states and 494 transitions. Second operand 4 states. [2020-09-17 00:23:21,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:23:21,804 INFO L93 Difference]: Finished difference Result 213 states and 497 transitions. [2020-09-17 00:23:21,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:23:21,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-17 00:23:21,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:23:21,808 INFO L225 Difference]: With dead ends: 213 [2020-09-17 00:23:21,808 INFO L226 Difference]: Without dead ends: 167 [2020-09-17 00:23:21,809 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 00:23:21,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-09-17 00:23:21,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2020-09-17 00:23:21,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-17 00:23:21,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 392 transitions. [2020-09-17 00:23:21,817 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 392 transitions. Word has length 12 [2020-09-17 00:23:21,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:23:21,817 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 392 transitions. [2020-09-17 00:23:21,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:23:21,817 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 392 transitions. [2020-09-17 00:23:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-17 00:23:21,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:23:21,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:23:21,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 00:23:21,819 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:23:21,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:23:21,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1114555336, now seen corresponding path program 1 times [2020-09-17 00:23:21,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:23:21,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025214945] [2020-09-17 00:23:21,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:23:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:23:21,905 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 00:23:21,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025214945] [2020-09-17 00:23:21,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:23:21,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 00:23:21,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340583463] [2020-09-17 00:23:21,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:23:21,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:23:21,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:23:21,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:23:21,908 INFO L87 Difference]: Start difference. First operand 167 states and 392 transitions. Second operand 5 states. [2020-09-17 00:23:21,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:23:21,961 INFO L93 Difference]: Finished difference Result 147 states and 311 transitions. [2020-09-17 00:23:21,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-17 00:23:21,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-17 00:23:21,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:23:21,964 INFO L225 Difference]: With dead ends: 147 [2020-09-17 00:23:21,964 INFO L226 Difference]: Without dead ends: 116 [2020-09-17 00:23:21,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 00:23:21,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-17 00:23:21,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-09-17 00:23:21,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-17 00:23:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 239 transitions. [2020-09-17 00:23:21,976 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 239 transitions. Word has length 13 [2020-09-17 00:23:21,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:23:21,976 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 239 transitions. [2020-09-17 00:23:21,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:23:21,976 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 239 transitions. [2020-09-17 00:23:21,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 00:23:21,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:23:21,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:23:21,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 00:23:21,978 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:23:21,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:23:21,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1420096236, now seen corresponding path program 1 times [2020-09-17 00:23:21,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:23:21,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093795066] [2020-09-17 00:23:21,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:23:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:23:22,049 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 00:23:22,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093795066] [2020-09-17 00:23:22,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:23:22,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-17 00:23:22,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568536837] [2020-09-17 00:23:22,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-17 00:23:22,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:23:22,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-17 00:23:22,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-17 00:23:22,052 INFO L87 Difference]: Start difference. First operand 116 states and 239 transitions. Second operand 6 states. [2020-09-17 00:23:22,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:23:22,111 INFO L93 Difference]: Finished difference Result 101 states and 207 transitions. [2020-09-17 00:23:22,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-17 00:23:22,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-17 00:23:22,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:23:22,113 INFO L225 Difference]: With dead ends: 101 [2020-09-17 00:23:22,113 INFO L226 Difference]: Without dead ends: 91 [2020-09-17 00:23:22,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-17 00:23:22,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-17 00:23:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-09-17 00:23:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-17 00:23:22,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 189 transitions. [2020-09-17 00:23:22,117 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 189 transitions. Word has length 15 [2020-09-17 00:23:22,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:23:22,117 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 189 transitions. [2020-09-17 00:23:22,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-17 00:23:22,117 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 189 transitions. [2020-09-17 00:23:22,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-17 00:23:22,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:23:22,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:23:22,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 00:23:22,119 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:23:22,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:23:22,120 INFO L82 PathProgramCache]: Analyzing trace with hash -572692364, now seen corresponding path program 1 times [2020-09-17 00:23:22,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:23:22,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937755561] [2020-09-17 00:23:22,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:23:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:23:22,210 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 00:23:22,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937755561] [2020-09-17 00:23:22,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:23:22,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 00:23:22,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626391975] [2020-09-17 00:23:22,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 00:23:22,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:23:22,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 00:23:22,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 00:23:22,213 INFO L87 Difference]: Start difference. First operand 91 states and 189 transitions. Second operand 4 states. [2020-09-17 00:23:22,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:23:22,239 INFO L93 Difference]: Finished difference Result 126 states and 254 transitions. [2020-09-17 00:23:22,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 00:23:22,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-17 00:23:22,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:23:22,240 INFO L225 Difference]: With dead ends: 126 [2020-09-17 00:23:22,241 INFO L226 Difference]: Without dead ends: 61 [2020-09-17 00:23:22,241 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 00:23:22,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-17 00:23:22,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-09-17 00:23:22,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-17 00:23:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 111 transitions. [2020-09-17 00:23:22,244 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 111 transitions. Word has length 18 [2020-09-17 00:23:22,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:23:22,245 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 111 transitions. [2020-09-17 00:23:22,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 00:23:22,245 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 111 transitions. [2020-09-17 00:23:22,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-17 00:23:22,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 00:23:22,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 00:23:22,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 00:23:22,247 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 00:23:22,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 00:23:22,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1469301908, now seen corresponding path program 2 times [2020-09-17 00:23:22,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 00:23:22,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486032783] [2020-09-17 00:23:22,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 00:23:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 00:23:22,372 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 00:23:22,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486032783] [2020-09-17 00:23:22,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 00:23:22,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 00:23:22,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438665398] [2020-09-17 00:23:22,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 00:23:22,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 00:23:22,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 00:23:22,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 00:23:22,374 INFO L87 Difference]: Start difference. First operand 61 states and 111 transitions. Second operand 5 states. [2020-09-17 00:23:22,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 00:23:22,399 INFO L93 Difference]: Finished difference Result 60 states and 110 transitions. [2020-09-17 00:23:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 00:23:22,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-17 00:23:22,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 00:23:22,400 INFO L225 Difference]: With dead ends: 60 [2020-09-17 00:23:22,400 INFO L226 Difference]: Without dead ends: 0 [2020-09-17 00:23:22,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-17 00:23:22,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-17 00:23:22,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-17 00:23:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-17 00:23:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-17 00:23:22,401 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-17 00:23:22,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 00:23:22,402 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-17 00:23:22,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 00:23:22,402 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-17 00:23:22,402 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-17 00:23:22,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 00:23:22,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 12:23:22 BasicIcfg [2020-09-17 00:23:22,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-17 00:23:22,413 INFO L168 Benchmark]: Toolchain (without parser) took 4918.07 ms. Allocated memory was 140.0 MB in the beginning and 245.4 MB in the end (delta: 105.4 MB). Free memory was 102.2 MB in the beginning and 153.7 MB in the end (delta: -51.5 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2020-09-17 00:23:22,414 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-17 00:23:22,418 INFO L168 Benchmark]: CACSL2BoogieTranslator took 801.97 ms. Allocated memory was 140.0 MB in the beginning and 205.5 MB in the end (delta: 65.5 MB). Free memory was 101.5 MB in the beginning and 163.8 MB in the end (delta: -62.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-09-17 00:23:22,419 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.37 ms. Allocated memory is still 205.5 MB. Free memory was 163.8 MB in the beginning and 161.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-17 00:23:22,420 INFO L168 Benchmark]: Boogie Preprocessor took 32.78 ms. Allocated memory is still 205.5 MB. Free memory was 161.1 MB in the beginning and 159.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-17 00:23:22,420 INFO L168 Benchmark]: RCFGBuilder took 522.51 ms. Allocated memory is still 205.5 MB. Free memory was 159.8 MB in the beginning and 137.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-17 00:23:22,421 INFO L168 Benchmark]: TraceAbstraction took 3489.47 ms. Allocated memory was 205.5 MB in the beginning and 245.4 MB in the end (delta: 39.8 MB). Free memory was 137.1 MB in the beginning and 153.7 MB in the end (delta: -16.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-09-17 00:23:22,426 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 801.97 ms. Allocated memory was 140.0 MB in the beginning and 205.5 MB in the end (delta: 65.5 MB). Free memory was 101.5 MB in the beginning and 163.8 MB in the end (delta: -62.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.37 ms. Allocated memory is still 205.5 MB. Free memory was 163.8 MB in the beginning and 161.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.78 ms. Allocated memory is still 205.5 MB. Free memory was 161.1 MB in the beginning and 159.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 522.51 ms. Allocated memory is still 205.5 MB. Free memory was 159.8 MB in the beginning and 137.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3489.47 ms. Allocated memory was 205.5 MB in the beginning and 245.4 MB in the end (delta: 39.8 MB). Free memory was 137.1 MB in the beginning and 153.7 MB in the end (delta: -16.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 78 ProgramPointsBefore, 32 ProgramPointsAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 656 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2250 CheckedPairsTotal, 55 TotalNumberOfCompositions - PositiveResult [Line: 7]: 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 167 SDtfs, 222 SDslu, 311 SDs, 0 SdLazy, 153 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 3393 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...