/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/safe025_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 22:51:24,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 22:51:24,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 22:51:24,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 22:51:24,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 22:51:24,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 22:51:24,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 22:51:24,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 22:51:24,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 22:51:24,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 22:51:24,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 22:51:24,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 22:51:24,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 22:51:24,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 22:51:24,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 22:51:24,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 22:51:24,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 22:51:24,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 22:51:24,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 22:51:24,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 22:51:24,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 22:51:24,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 22:51:24,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 22:51:24,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 22:51:24,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-05 22:51:24,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-05 22:51:24,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-05 22:51:24,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-05 22:51:24,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-05 22:51:24,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-05 22:51:24,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 22:51:24,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 22:51:24,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 22:51:24,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 22:51:24,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 22:51:24,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 22:51:24,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 22:51:24,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 22:51:24,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 22:51:24,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 22:51:24,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 22:51:24,978 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 [2020-10-05 22:51:25,000 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 22:51:25,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 22:51:25,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 22:51:25,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 22:51:25,002 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 22:51:25,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 22:51:25,003 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 22:51:25,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 22:51:25,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 22:51:25,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 22:51:25,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 22:51:25,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 22:51:25,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 22:51:25,004 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 22:51:25,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 22:51:25,005 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 22:51:25,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 22:51:25,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 22:51:25,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 22:51:25,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 22:51:25,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 22:51:25,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:51:25,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 22:51:25,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 22:51:25,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 22:51:25,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 22:51:25,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 22:51:25,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 22:51:25,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 22:51:25,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 22:51:25,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 22:51:25,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 22:51:25,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 22:51:25,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 22:51:25,357 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 22:51:25,358 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2020-10-05 22:51:25,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb97d4f73/08250a1fb0b5479996df67b575e80076/FLAG675b85b36 [2020-10-05 22:51:25,953 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 22:51:25,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2020-10-05 22:51:25,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb97d4f73/08250a1fb0b5479996df67b575e80076/FLAG675b85b36 [2020-10-05 22:51:26,249 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb97d4f73/08250a1fb0b5479996df67b575e80076 [2020-10-05 22:51:26,260 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 22:51:26,261 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 22:51:26,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 22:51:26,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 22:51:26,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 22:51:26,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:51:26" (1/1) ... [2020-10-05 22:51:26,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5debb4ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:26, skipping insertion in model container [2020-10-05 22:51:26,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:51:26" (1/1) ... [2020-10-05 22:51:26,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 22:51:26,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 22:51:26,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:51:26,678 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 22:51:26,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:51:26,918 INFO L208 MainTranslator]: Completed translation [2020-10-05 22:51:26,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:26 WrapperNode [2020-10-05 22:51:26,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 22:51:26,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 22:51:26,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 22:51:26,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 22:51:26,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:26" (1/1) ... [2020-10-05 22:51:26,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:26" (1/1) ... [2020-10-05 22:51:26,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 22:51:26,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 22:51:26,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 22:51:26,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 22:51:26,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:26" (1/1) ... [2020-10-05 22:51:26,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:26" (1/1) ... [2020-10-05 22:51:26,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:26" (1/1) ... [2020-10-05 22:51:26,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:26" (1/1) ... [2020-10-05 22:51:26,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:26" (1/1) ... [2020-10-05 22:51:26,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:26" (1/1) ... [2020-10-05 22:51:26,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:26" (1/1) ... [2020-10-05 22:51:27,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 22:51:27,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 22:51:27,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 22:51:27,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 22:51:27,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:26" (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 [2020-10-05 22:51:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 22:51:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 22:51:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 22:51:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 22:51:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-05 22:51:27,066 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-05 22:51:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-05 22:51:27,067 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-05 22:51:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-05 22:51:27,067 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-05 22:51:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 22:51:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 22:51:27,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 22:51:27,070 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 22:51:27,455 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 22:51:27,455 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-05 22:51:27,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:51:27 BoogieIcfgContainer [2020-10-05 22:51:27,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 22:51:27,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 22:51:27,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 22:51:27,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 22:51:27,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:51:26" (1/3) ... [2020-10-05 22:51:27,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bea4c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:51:27, skipping insertion in model container [2020-10-05 22:51:27,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:26" (2/3) ... [2020-10-05 22:51:27,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bea4c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:51:27, skipping insertion in model container [2020-10-05 22:51:27,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:51:27" (3/3) ... [2020-10-05 22:51:27,467 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc.i [2020-10-05 22:51:27,478 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 22:51:27,478 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 22:51:27,486 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 22:51:27,487 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 22:51:27,520 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,520 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,520 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,521 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,522 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,522 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,523 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,523 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,523 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,523 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,524 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,524 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,525 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,525 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,525 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,525 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,526 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,526 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,530 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,530 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,530 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,531 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,539 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,540 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,540 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,540 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,550 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,551 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,551 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,551 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:27,570 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 22:51:27,596 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 22:51:27,597 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 22:51:27,597 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 22:51:27,597 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 22:51:27,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 22:51:27,598 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 22:51:27,598 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 22:51:27,599 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 22:51:27,622 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-05 22:51:27,625 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-05 22:51:27,690 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-05 22:51:27,690 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:51:27,697 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 51 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. [2020-10-05 22:51:27,701 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-05 22:51:27,722 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-05 22:51:27,723 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:51:27,724 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 51 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. [2020-10-05 22:51:27,734 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-05 22:51:27,735 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 22:51:29,451 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-10-05 22:51:29,452 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-10-05 22:51:29,455 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-05 22:51:29,482 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-05 22:51:29,484 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-05 22:51:29,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:51:29,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:29,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:29,493 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:29,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:29,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-05 22:51:29,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:29,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476012430] [2020-10-05 22:51:29,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:29,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476012430] [2020-10-05 22:51:29,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:29,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:51:29,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878067360] [2020-10-05 22:51:29,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:51:29,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:29,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:51:29,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:29,745 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-05 22:51:29,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:29,798 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-05 22:51:29,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:51:29,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-05 22:51:29,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:29,817 INFO L225 Difference]: With dead ends: 282 [2020-10-05 22:51:29,817 INFO L226 Difference]: Without dead ends: 218 [2020-10-05 22:51:29,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:29,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-05 22:51:29,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-05 22:51:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-05 22:51:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-05 22:51:29,887 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-05 22:51:29,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:29,889 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-05 22:51:29,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:51:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-05 22:51:29,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:51:29,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:29,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:29,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 22:51:29,891 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:29,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:29,892 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-10-05 22:51:29,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:29,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33760920] [2020-10-05 22:51:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:29,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:29,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33760920] [2020-10-05 22:51:29,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:29,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:51:29,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737193283] [2020-10-05 22:51:29,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:51:29,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:29,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:51:29,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:29,951 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-05 22:51:29,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:29,974 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-05 22:51:29,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:51:29,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-05 22:51:29,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:29,977 INFO L225 Difference]: With dead ends: 202 [2020-10-05 22:51:29,978 INFO L226 Difference]: Without dead ends: 202 [2020-10-05 22:51:29,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:29,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-05 22:51:29,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-05 22:51:29,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-05 22:51:29,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-05 22:51:29,996 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-05 22:51:29,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:29,997 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-05 22:51:29,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:51:29,997 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-05 22:51:29,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:51:29,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:29,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:29,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 22:51:29,999 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:30,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:30,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-10-05 22:51:30,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:30,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204824832] [2020-10-05 22:51:30,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:30,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204824832] [2020-10-05 22:51:30,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:30,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:51:30,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386521160] [2020-10-05 22:51:30,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:51:30,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:30,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:51:30,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:30,066 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-05 22:51:30,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:30,078 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-10-05 22:51:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:51:30,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-05 22:51:30,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:30,082 INFO L225 Difference]: With dead ends: 194 [2020-10-05 22:51:30,083 INFO L226 Difference]: Without dead ends: 194 [2020-10-05 22:51:30,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:30,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-05 22:51:30,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-05 22:51:30,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-05 22:51:30,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-10-05 22:51:30,106 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-10-05 22:51:30,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:30,106 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-10-05 22:51:30,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:51:30,107 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-10-05 22:51:30,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:51:30,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:30,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:30,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 22:51:30,112 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:30,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:30,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-10-05 22:51:30,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:30,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725083922] [2020-10-05 22:51:30,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:30,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:30,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725083922] [2020-10-05 22:51:30,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:30,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:51:30,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576943717] [2020-10-05 22:51:30,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:51:30,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:30,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:51:30,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:51:30,212 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-10-05 22:51:30,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:30,247 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-10-05 22:51:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:51:30,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-05 22:51:30,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:30,249 INFO L225 Difference]: With dead ends: 225 [2020-10-05 22:51:30,249 INFO L226 Difference]: Without dead ends: 161 [2020-10-05 22:51:30,250 INFO L675 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 [2020-10-05 22:51:30,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-05 22:51:30,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-10-05 22:51:30,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-05 22:51:30,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-10-05 22:51:30,258 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-10-05 22:51:30,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:30,259 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-10-05 22:51:30,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:51:30,259 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-10-05 22:51:30,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:51:30,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:30,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:30,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 22:51:30,261 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:30,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:30,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-10-05 22:51:30,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:30,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470150488] [2020-10-05 22:51:30,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:30,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:30,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470150488] [2020-10-05 22:51:30,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:30,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:51:30,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835531281] [2020-10-05 22:51:30,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:51:30,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:30,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:51:30,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:51:30,341 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 5 states. [2020-10-05 22:51:30,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:30,419 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-10-05 22:51:30,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:51:30,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-05 22:51:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:30,422 INFO L225 Difference]: With dead ends: 160 [2020-10-05 22:51:30,422 INFO L226 Difference]: Without dead ends: 123 [2020-10-05 22:51:30,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:51:30,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-05 22:51:30,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-05 22:51:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-05 22:51:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-10-05 22:51:30,428 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-10-05 22:51:30,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:30,429 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-10-05 22:51:30,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:51:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-10-05 22:51:30,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:51:30,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:30,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:30,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 22:51:30,431 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:30,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:30,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-10-05 22:51:30,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:30,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584924454] [2020-10-05 22:51:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:30,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584924454] [2020-10-05 22:51:30,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:30,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:51:30,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145247974] [2020-10-05 22:51:30,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:51:30,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:30,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:51:30,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:51:30,495 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-10-05 22:51:30,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:30,546 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-10-05 22:51:30,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:51:30,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-05 22:51:30,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:30,548 INFO L225 Difference]: With dead ends: 118 [2020-10-05 22:51:30,548 INFO L226 Difference]: Without dead ends: 108 [2020-10-05 22:51:30,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-05 22:51:30,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-05 22:51:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-05 22:51:30,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-05 22:51:30,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-10-05 22:51:30,553 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-10-05 22:51:30,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:30,554 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-10-05 22:51:30,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:51:30,554 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-10-05 22:51:30,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:51:30,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:30,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:30,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 22:51:30,556 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:30,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:30,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-10-05 22:51:30,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:30,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34048485] [2020-10-05 22:51:30,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:30,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34048485] [2020-10-05 22:51:30,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:30,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:51:30,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272128546] [2020-10-05 22:51:30,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:51:30,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:30,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:51:30,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:51:30,601 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-10-05 22:51:30,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:30,617 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-10-05 22:51:30,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:51:30,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-05 22:51:30,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:30,618 INFO L225 Difference]: With dead ends: 133 [2020-10-05 22:51:30,618 INFO L226 Difference]: Without dead ends: 54 [2020-10-05 22:51:30,619 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 [2020-10-05 22:51:30,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-05 22:51:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-05 22:51:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-05 22:51:30,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-10-05 22:51:30,621 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-10-05 22:51:30,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:30,622 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-10-05 22:51:30,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:51:30,622 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-10-05 22:51:30,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:51:30,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:30,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:30,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 22:51:30,623 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:30,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:30,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-10-05 22:51:30,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:30,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198411893] [2020-10-05 22:51:30,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:30,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198411893] [2020-10-05 22:51:30,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:30,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:51:30,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695696923] [2020-10-05 22:51:30,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:51:30,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:30,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:51:30,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:51:30,667 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-10-05 22:51:30,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:30,688 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-10-05 22:51:30,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:51:30,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-05 22:51:30,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:30,689 INFO L225 Difference]: With dead ends: 63 [2020-10-05 22:51:30,689 INFO L226 Difference]: Without dead ends: 38 [2020-10-05 22:51:30,690 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 [2020-10-05 22:51:30,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-05 22:51:30,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-05 22:51:30,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-05 22:51:30,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-10-05 22:51:30,693 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-10-05 22:51:30,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:30,694 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-10-05 22:51:30,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:51:30,694 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-10-05 22:51:30,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:51:30,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:30,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:30,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 22:51:30,695 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:30,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:30,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-10-05 22:51:30,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:30,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340475600] [2020-10-05 22:51:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:30,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340475600] [2020-10-05 22:51:30,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:30,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:51:30,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162160650] [2020-10-05 22:51:30,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:51:30,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:30,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:51:30,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:51:30,735 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-10-05 22:51:30,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:30,756 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-10-05 22:51:30,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:51:30,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-05 22:51:30,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:30,758 INFO L225 Difference]: With dead ends: 56 [2020-10-05 22:51:30,758 INFO L226 Difference]: Without dead ends: 35 [2020-10-05 22:51:30,758 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 [2020-10-05 22:51:30,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-05 22:51:30,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-05 22:51:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-05 22:51:30,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-10-05 22:51:30,760 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-10-05 22:51:30,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:30,761 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-10-05 22:51:30,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:51:30,761 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-10-05 22:51:30,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:51:30,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:30,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:30,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 22:51:30,762 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:30,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:30,763 INFO L82 PathProgramCache]: Analyzing trace with hash -828702424, now seen corresponding path program 4 times [2020-10-05 22:51:30,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:30,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721996282] [2020-10-05 22:51:30,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:30,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:30,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721996282] [2020-10-05 22:51:30,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:30,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:51:30,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306329687] [2020-10-05 22:51:30,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:51:30,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:30,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:51:30,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:51:30,801 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-10-05 22:51:30,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:30,816 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-10-05 22:51:30,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:51:30,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-05 22:51:30,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:30,817 INFO L225 Difference]: With dead ends: 34 [2020-10-05 22:51:30,817 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 22:51:30,817 INFO L675 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 [2020-10-05 22:51:30,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 22:51:30,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 22:51:30,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 22:51:30,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 22:51:30,819 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-05 22:51:30,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:30,819 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 22:51:30,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:51:30,819 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 22:51:30,819 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 22:51:30,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 22:51:30,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:51:30 BasicIcfg [2020-10-05 22:51:30,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 22:51:30,827 INFO L168 Benchmark]: Toolchain (without parser) took 4565.02 ms. Allocated memory was 145.8 MB in the beginning and 249.0 MB in the end (delta: 103.3 MB). Free memory was 99.4 MB in the beginning and 146.4 MB in the end (delta: -47.0 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:30,828 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 145.8 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-05 22:51:30,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.15 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 99.2 MB in the beginning and 162.1 MB in the end (delta: -62.9 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:30,830 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.94 ms. Allocated memory is still 203.4 MB. Free memory was 162.1 MB in the beginning and 159.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:30,830 INFO L168 Benchmark]: Boogie Preprocessor took 28.59 ms. Allocated memory is still 203.4 MB. Free memory was 159.3 MB in the beginning and 158.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:30,831 INFO L168 Benchmark]: RCFGBuilder took 456.72 ms. Allocated memory is still 203.4 MB. Free memory was 158.0 MB in the beginning and 135.8 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:30,832 INFO L168 Benchmark]: TraceAbstraction took 3365.00 ms. Allocated memory was 203.4 MB in the beginning and 249.0 MB in the end (delta: 45.6 MB). Free memory was 135.1 MB in the beginning and 146.4 MB in the end (delta: -11.3 MB). Peak memory consumption was 34.3 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:30,836 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 145.8 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 656.15 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 99.2 MB in the beginning and 162.1 MB in the end (delta: -62.9 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.94 ms. Allocated memory is still 203.4 MB. Free memory was 162.1 MB in the beginning and 159.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.59 ms. Allocated memory is still 203.4 MB. Free memory was 159.3 MB in the beginning and 158.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.72 ms. Allocated memory is still 203.4 MB. Free memory was 158.0 MB in the beginning and 135.8 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3365.00 ms. Allocated memory was 203.4 MB in the beginning and 249.0 MB in the end (delta: 45.6 MB). Free memory was 135.1 MB in the beginning and 146.4 MB in the end (delta: -11.3 MB). Peak memory consumption was 34.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 672 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 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: 3.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 205 SDtfs, 151 SDslu, 247 SDs, 0 SdLazy, 129 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4232 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...