/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/safe016_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 17:52:38,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 17:52:38,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 17:52:38,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 17:52:38,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 17:52:38,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 17:52:38,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 17:52:38,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 17:52:38,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 17:52:38,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 17:52:38,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 17:52:38,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 17:52:38,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 17:52:38,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 17:52:39,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 17:52:39,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 17:52:39,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 17:52:39,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 17:52:39,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 17:52:39,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 17:52:39,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 17:52:39,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 17:52:39,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 17:52:39,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 17:52:39,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 17:52:39,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 17:52:39,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 17:52:39,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 17:52:39,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 17:52:39,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 17:52:39,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 17:52:39,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 17:52:39,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 17:52:39,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 17:52:39,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 17:52:39,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 17:52:39,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 17:52:39,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 17:52:39,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 17:52:39,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 17:52:39,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 17:52:39,045 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 [2020-04-17 17:52:39,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 17:52:39,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 17:52:39,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 17:52:39,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 17:52:39,067 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 17:52:39,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 17:52:39,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 17:52:39,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 17:52:39,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 17:52:39,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 17:52:39,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 17:52:39,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 17:52:39,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 17:52:39,070 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 17:52:39,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 17:52:39,070 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 17:52:39,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 17:52:39,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 17:52:39,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 17:52:39,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 17:52:39,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 17:52:39,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:52:39,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 17:52:39,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 17:52:39,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 17:52:39,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 17:52:39,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 17:52:39,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 17:52:39,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 17:52:39,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 17:52:39,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 17:52:39,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 17:52:39,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 17:52:39,408 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 17:52:39,408 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 17:52:39,409 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-04-17 17:52:39,481 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc0e03e76/a252fba18afe4e8d9dab44ae65d0ae52/FLAG743a3bd5d [2020-04-17 17:52:40,027 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 17:52:40,028 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-04-17 17:52:40,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc0e03e76/a252fba18afe4e8d9dab44ae65d0ae52/FLAG743a3bd5d [2020-04-17 17:52:40,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc0e03e76/a252fba18afe4e8d9dab44ae65d0ae52 [2020-04-17 17:52:40,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 17:52:40,336 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 17:52:40,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 17:52:40,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 17:52:40,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 17:52:40,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:52:40" (1/1) ... [2020-04-17 17:52:40,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c383be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:52:40, skipping insertion in model container [2020-04-17 17:52:40,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:52:40" (1/1) ... [2020-04-17 17:52:40,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 17:52:40,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 17:52:40,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:52:40,910 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 17:52:40,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:52:41,048 INFO L208 MainTranslator]: Completed translation [2020-04-17 17:52:41,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:52:41 WrapperNode [2020-04-17 17:52:41,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 17:52:41,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 17:52:41,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 17:52:41,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 17:52:41,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:52:41" (1/1) ... [2020-04-17 17:52:41,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:52:41" (1/1) ... [2020-04-17 17:52:41,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 17:52:41,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 17:52:41,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 17:52:41,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 17:52:41,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:52:41" (1/1) ... [2020-04-17 17:52:41,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:52:41" (1/1) ... [2020-04-17 17:52:41,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:52:41" (1/1) ... [2020-04-17 17:52:41,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:52:41" (1/1) ... [2020-04-17 17:52:41,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:52:41" (1/1) ... [2020-04-17 17:52:41,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:52:41" (1/1) ... [2020-04-17 17:52:41,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:52:41" (1/1) ... [2020-04-17 17:52:41,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 17:52:41,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 17:52:41,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 17:52:41,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 17:52:41,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:52:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:52:41,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 17:52:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 17:52:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 17:52:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 17:52:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 17:52:41,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 17:52:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 17:52:41,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 17:52:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 17:52:41,194 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 17:52:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-17 17:52:41,194 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-17 17:52:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 17:52:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 17:52:41,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 17:52:41,198 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 17:52:41,580 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 17:52:41,581 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 17:52:41,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:52:41 BoogieIcfgContainer [2020-04-17 17:52:41,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 17:52:41,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 17:52:41,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 17:52:41,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 17:52:41,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 05:52:40" (1/3) ... [2020-04-17 17:52:41,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388b25e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:52:41, skipping insertion in model container [2020-04-17 17:52:41,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:52:41" (2/3) ... [2020-04-17 17:52:41,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388b25e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:52:41, skipping insertion in model container [2020-04-17 17:52:41,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:52:41" (3/3) ... [2020-04-17 17:52:41,607 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2020-04-17 17:52:41,618 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 17:52:41,618 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 17:52:41,626 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 17:52:41,626 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 17:52:41,655 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,655 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,656 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,656 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,657 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,657 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,657 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,658 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,658 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,658 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,659 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,659 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,659 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,660 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,660 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,660 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,661 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,661 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,661 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,661 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,662 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,662 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,662 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,663 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,666 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,667 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,667 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,667 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,672 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,673 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,673 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,673 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,681 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,681 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,681 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,681 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,683 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,684 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,684 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,684 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:52:41,699 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-17 17:52:41,714 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 17:52:41,714 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 17:52:41,715 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 17:52:41,715 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 17:52:41,715 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 17:52:41,715 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 17:52:41,715 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 17:52:41,715 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 17:52:41,731 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-04-17 17:52:41,733 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-17 17:52:41,781 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-17 17:52:41,781 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:52:41,787 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-17 17:52:41,790 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-17 17:52:41,819 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-17 17:52:41,820 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:52:41,821 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-17 17:52:41,826 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-17 17:52:41,827 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 17:52:43,621 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-17 17:52:43,725 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-04-17 17:52:43,725 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-04-17 17:52:43,730 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-04-17 17:52:43,803 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-04-17 17:52:43,807 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-04-17 17:52:43,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 17:52:43,818 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:52:43,819 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:52:43,819 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:52:43,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:52:43,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-04-17 17:52:43,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:52:43,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322581214] [2020-04-17 17:52:43,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:52:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:52:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:52:44,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322581214] [2020-04-17 17:52:44,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:52:44,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:52:44,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570595756] [2020-04-17 17:52:44,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 17:52:44,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:52:44,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 17:52:44,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 17:52:44,092 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-04-17 17:52:44,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:52:44,158 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-04-17 17:52:44,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 17:52:44,159 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-17 17:52:44,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:52:44,211 INFO L225 Difference]: With dead ends: 850 [2020-04-17 17:52:44,211 INFO L226 Difference]: Without dead ends: 706 [2020-04-17 17:52:44,213 INFO L678 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 [2020-04-17 17:52:44,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-04-17 17:52:44,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-04-17 17:52:44,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-04-17 17:52:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-04-17 17:52:44,345 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-04-17 17:52:44,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:52:44,346 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-04-17 17:52:44,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 17:52:44,346 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-04-17 17:52:44,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 17:52:44,349 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:52:44,349 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:52:44,350 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:52:44,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:52:44,350 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-04-17 17:52:44,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:52:44,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708323222] [2020-04-17 17:52:44,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:52:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:52:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:52:44,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708323222] [2020-04-17 17:52:44,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:52:44,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:52:44,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304401534] [2020-04-17 17:52:44,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:52:44,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:52:44,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:52:44,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:52:44,475 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-04-17 17:52:44,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:52:44,533 INFO L93 Difference]: Finished difference Result 778 states and 2592 transitions. [2020-04-17 17:52:44,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:52:44,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 17:52:44,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:52:44,540 INFO L225 Difference]: With dead ends: 778 [2020-04-17 17:52:44,541 INFO L226 Difference]: Without dead ends: 634 [2020-04-17 17:52:44,542 INFO L678 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 [2020-04-17 17:52:44,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-04-17 17:52:44,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-04-17 17:52:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-04-17 17:52:44,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2020-04-17 17:52:44,578 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 11 [2020-04-17 17:52:44,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:52:44,578 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2020-04-17 17:52:44,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:52:44,579 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2020-04-17 17:52:44,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 17:52:44,581 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:52:44,581 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:52:44,582 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:52:44,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:52:44,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1068447712, now seen corresponding path program 1 times [2020-04-17 17:52:44,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:52:44,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37309720] [2020-04-17 17:52:44,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:52:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:52:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:52:44,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37309720] [2020-04-17 17:52:44,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:52:44,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:52:44,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689081365] [2020-04-17 17:52:44,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:52:44,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:52:44,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:52:44,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:52:44,697 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand 4 states. [2020-04-17 17:52:44,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:52:44,741 INFO L93 Difference]: Finished difference Result 718 states and 2351 transitions. [2020-04-17 17:52:44,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:52:44,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 17:52:44,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:52:44,757 INFO L225 Difference]: With dead ends: 718 [2020-04-17 17:52:44,758 INFO L226 Difference]: Without dead ends: 610 [2020-04-17 17:52:44,758 INFO L678 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 [2020-04-17 17:52:44,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-04-17 17:52:44,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2020-04-17 17:52:44,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-04-17 17:52:44,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 2042 transitions. [2020-04-17 17:52:44,787 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 2042 transitions. Word has length 12 [2020-04-17 17:52:44,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:52:44,788 INFO L479 AbstractCegarLoop]: Abstraction has 610 states and 2042 transitions. [2020-04-17 17:52:44,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:52:44,788 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 2042 transitions. [2020-04-17 17:52:44,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 17:52:44,793 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:52:44,793 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:52:44,793 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:52:44,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:52:44,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1923922428, now seen corresponding path program 1 times [2020-04-17 17:52:44,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:52:44,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679425183] [2020-04-17 17:52:44,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:52:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:52:44,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:52:44,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679425183] [2020-04-17 17:52:44,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:52:44,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:52:44,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824173453] [2020-04-17 17:52:44,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:52:44,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:52:44,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:52:44,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:52:44,907 INFO L87 Difference]: Start difference. First operand 610 states and 2042 transitions. Second operand 4 states. [2020-04-17 17:52:44,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:52:44,951 INFO L93 Difference]: Finished difference Result 674 states and 2178 transitions. [2020-04-17 17:52:44,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:52:44,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 17:52:44,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:52:44,956 INFO L225 Difference]: With dead ends: 674 [2020-04-17 17:52:44,957 INFO L226 Difference]: Without dead ends: 578 [2020-04-17 17:52:44,957 INFO L678 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 [2020-04-17 17:52:44,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-04-17 17:52:44,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-04-17 17:52:44,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-04-17 17:52:44,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-04-17 17:52:44,980 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-04-17 17:52:44,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:52:44,980 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-04-17 17:52:44,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:52:44,980 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-04-17 17:52:44,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 17:52:44,982 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:52:44,982 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:52:44,982 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:52:44,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:52:44,983 INFO L82 PathProgramCache]: Analyzing trace with hash -488944074, now seen corresponding path program 1 times [2020-04-17 17:52:44,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:52:44,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157269414] [2020-04-17 17:52:44,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:52:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:52:45,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:52:45,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157269414] [2020-04-17 17:52:45,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:52:45,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:52:45,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361717415] [2020-04-17 17:52:45,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:52:45,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:52:45,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:52:45,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:52:45,101 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-04-17 17:52:45,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:52:45,138 INFO L93 Difference]: Finished difference Result 610 states and 1962 transitions. [2020-04-17 17:52:45,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:52:45,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 17:52:45,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:52:45,143 INFO L225 Difference]: With dead ends: 610 [2020-04-17 17:52:45,143 INFO L226 Difference]: Without dead ends: 546 [2020-04-17 17:52:45,143 INFO L678 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 [2020-04-17 17:52:45,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-04-17 17:52:45,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2020-04-17 17:52:45,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-04-17 17:52:45,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 1786 transitions. [2020-04-17 17:52:45,162 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 1786 transitions. Word has length 14 [2020-04-17 17:52:45,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:52:45,163 INFO L479 AbstractCegarLoop]: Abstraction has 546 states and 1786 transitions. [2020-04-17 17:52:45,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:52:45,163 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 1786 transitions. [2020-04-17 17:52:45,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 17:52:45,164 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:52:45,164 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:52:45,165 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:52:45,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:52:45,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1533442537, now seen corresponding path program 1 times [2020-04-17 17:52:45,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:52:45,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765997585] [2020-04-17 17:52:45,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:52:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:52:45,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:52:45,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765997585] [2020-04-17 17:52:45,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:52:45,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:52:45,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264721541] [2020-04-17 17:52:45,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:52:45,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:52:45,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:52:45,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:52:45,218 INFO L87 Difference]: Start difference. First operand 546 states and 1786 transitions. Second operand 4 states. [2020-04-17 17:52:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:52:45,254 INFO L93 Difference]: Finished difference Result 794 states and 2462 transitions. [2020-04-17 17:52:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:52:45,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 17:52:45,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:52:45,261 INFO L225 Difference]: With dead ends: 794 [2020-04-17 17:52:45,261 INFO L226 Difference]: Without dead ends: 578 [2020-04-17 17:52:45,262 INFO L678 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 [2020-04-17 17:52:45,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-04-17 17:52:45,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 514. [2020-04-17 17:52:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-04-17 17:52:45,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1598 transitions. [2020-04-17 17:52:45,280 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1598 transitions. Word has length 15 [2020-04-17 17:52:45,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:52:45,281 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 1598 transitions. [2020-04-17 17:52:45,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:52:45,281 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1598 transitions. [2020-04-17 17:52:45,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 17:52:45,282 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:52:45,283 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:52:45,283 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:52:45,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:52:45,283 INFO L82 PathProgramCache]: Analyzing trace with hash 350267355, now seen corresponding path program 1 times [2020-04-17 17:52:45,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:52:45,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730700400] [2020-04-17 17:52:45,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:52:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:52:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:52:45,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730700400] [2020-04-17 17:52:45,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:52:45,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:52:45,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728099749] [2020-04-17 17:52:45,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:52:45,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:52:45,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:52:45,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:52:45,402 INFO L87 Difference]: Start difference. First operand 514 states and 1598 transitions. Second operand 5 states. [2020-04-17 17:52:45,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:52:45,452 INFO L93 Difference]: Finished difference Result 802 states and 2456 transitions. [2020-04-17 17:52:45,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:52:45,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 17:52:45,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:52:45,457 INFO L225 Difference]: With dead ends: 802 [2020-04-17 17:52:45,457 INFO L226 Difference]: Without dead ends: 466 [2020-04-17 17:52:45,457 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:52:45,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-04-17 17:52:45,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2020-04-17 17:52:45,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-04-17 17:52:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1400 transitions. [2020-04-17 17:52:45,474 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1400 transitions. Word has length 15 [2020-04-17 17:52:45,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:52:45,474 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 1400 transitions. [2020-04-17 17:52:45,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:52:45,475 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1400 transitions. [2020-04-17 17:52:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 17:52:45,476 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:52:45,476 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:52:45,476 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:52:45,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:52:45,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1081767860, now seen corresponding path program 1 times [2020-04-17 17:52:45,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:52:45,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556738440] [2020-04-17 17:52:45,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:52:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:52:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:52:45,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556738440] [2020-04-17 17:52:45,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:52:45,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:52:45,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348223168] [2020-04-17 17:52:45,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:52:45,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:52:45,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:52:45,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:52:45,548 INFO L87 Difference]: Start difference. First operand 466 states and 1400 transitions. Second operand 5 states. [2020-04-17 17:52:45,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:52:45,611 INFO L93 Difference]: Finished difference Result 662 states and 1956 transitions. [2020-04-17 17:52:45,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:52:45,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 17:52:45,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:52:45,616 INFO L225 Difference]: With dead ends: 662 [2020-04-17 17:52:45,616 INFO L226 Difference]: Without dead ends: 326 [2020-04-17 17:52:45,617 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:52:45,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-04-17 17:52:45,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2020-04-17 17:52:45,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-04-17 17:52:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 955 transitions. [2020-04-17 17:52:45,636 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 955 transitions. Word has length 15 [2020-04-17 17:52:45,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:52:45,638 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 955 transitions. [2020-04-17 17:52:45,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:52:45,646 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 955 transitions. [2020-04-17 17:52:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 17:52:45,650 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:52:45,651 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:52:45,651 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:52:45,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:52:45,651 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-04-17 17:52:45,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:52:45,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755862098] [2020-04-17 17:52:45,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:52:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:52:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:52:45,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755862098] [2020-04-17 17:52:45,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:52:45,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:52:45,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480088052] [2020-04-17 17:52:45,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:52:45,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:52:45,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:52:45,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:52:45,816 INFO L87 Difference]: Start difference. First operand 326 states and 955 transitions. Second operand 4 states. [2020-04-17 17:52:45,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:52:45,880 INFO L93 Difference]: Finished difference Result 390 states and 1053 transitions. [2020-04-17 17:52:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:52:45,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 17:52:45,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:52:45,885 INFO L225 Difference]: With dead ends: 390 [2020-04-17 17:52:45,885 INFO L226 Difference]: Without dead ends: 293 [2020-04-17 17:52:45,885 INFO L678 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 [2020-04-17 17:52:45,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-04-17 17:52:45,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2020-04-17 17:52:45,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-04-17 17:52:45,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 804 transitions. [2020-04-17 17:52:45,900 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 804 transitions. Word has length 15 [2020-04-17 17:52:45,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:52:45,900 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 804 transitions. [2020-04-17 17:52:45,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:52:45,901 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 804 transitions. [2020-04-17 17:52:45,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 17:52:45,902 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:52:45,902 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:52:45,903 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:52:45,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:52:45,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-04-17 17:52:45,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:52:45,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534717296] [2020-04-17 17:52:45,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:52:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:52:45,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:52:45,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534717296] [2020-04-17 17:52:45,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:52:45,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 17:52:45,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086258628] [2020-04-17 17:52:45,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:52:45,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:52:45,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:52:45,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:52:45,996 INFO L87 Difference]: Start difference. First operand 293 states and 804 transitions. Second operand 5 states. [2020-04-17 17:52:46,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:52:46,053 INFO L93 Difference]: Finished difference Result 296 states and 728 transitions. [2020-04-17 17:52:46,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:52:46,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-17 17:52:46,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:52:46,055 INFO L225 Difference]: With dead ends: 296 [2020-04-17 17:52:46,055 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 17:52:46,055 INFO L678 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 [2020-04-17 17:52:46,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 17:52:46,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 17:52:46,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 17:52:46,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 525 transitions. [2020-04-17 17:52:46,062 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 525 transitions. Word has length 16 [2020-04-17 17:52:46,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:52:46,064 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 525 transitions. [2020-04-17 17:52:46,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:52:46,064 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 525 transitions. [2020-04-17 17:52:46,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 17:52:46,065 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:52:46,065 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:52:46,066 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:52:46,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:52:46,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-04-17 17:52:46,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:52:46,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514660416] [2020-04-17 17:52:46,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:52:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:52:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:52:46,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514660416] [2020-04-17 17:52:46,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:52:46,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-17 17:52:46,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962047325] [2020-04-17 17:52:46,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 17:52:46,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:52:46,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 17:52:46,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:52:46,136 INFO L87 Difference]: Start difference. First operand 218 states and 525 transitions. Second operand 6 states. [2020-04-17 17:52:46,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:52:46,200 INFO L93 Difference]: Finished difference Result 196 states and 441 transitions. [2020-04-17 17:52:46,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 17:52:46,200 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-04-17 17:52:46,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:52:46,202 INFO L225 Difference]: With dead ends: 196 [2020-04-17 17:52:46,202 INFO L226 Difference]: Without dead ends: 157 [2020-04-17 17:52:46,202 INFO L678 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 [2020-04-17 17:52:46,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-04-17 17:52:46,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-04-17 17:52:46,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-04-17 17:52:46,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 352 transitions. [2020-04-17 17:52:46,209 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 352 transitions. Word has length 17 [2020-04-17 17:52:46,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:52:46,210 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 352 transitions. [2020-04-17 17:52:46,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 17:52:46,210 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 352 transitions. [2020-04-17 17:52:46,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-17 17:52:46,211 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:52:46,211 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:52:46,211 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:52:46,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:52:46,212 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-04-17 17:52:46,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:52:46,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16325225] [2020-04-17 17:52:46,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:52:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:52:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:52:46,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16325225] [2020-04-17 17:52:46,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:52:46,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 17:52:46,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922367224] [2020-04-17 17:52:46,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:52:46,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:52:46,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:52:46,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:52:46,280 INFO L87 Difference]: Start difference. First operand 157 states and 352 transitions. Second operand 5 states. [2020-04-17 17:52:46,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:52:46,322 INFO L93 Difference]: Finished difference Result 197 states and 430 transitions. [2020-04-17 17:52:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:52:46,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-04-17 17:52:46,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:52:46,324 INFO L225 Difference]: With dead ends: 197 [2020-04-17 17:52:46,324 INFO L226 Difference]: Without dead ends: 148 [2020-04-17 17:52:46,325 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:52:46,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-04-17 17:52:46,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2020-04-17 17:52:46,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-17 17:52:46,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 314 transitions. [2020-04-17 17:52:46,329 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 314 transitions. Word has length 19 [2020-04-17 17:52:46,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:52:46,330 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 314 transitions. [2020-04-17 17:52:46,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:52:46,330 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 314 transitions. [2020-04-17 17:52:46,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-17 17:52:46,331 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:52:46,331 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:52:46,331 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:52:46,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:52:46,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-04-17 17:52:46,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:52:46,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121997437] [2020-04-17 17:52:46,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:52:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:52:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:52:46,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121997437] [2020-04-17 17:52:46,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:52:46,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-17 17:52:46,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741786073] [2020-04-17 17:52:46,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-17 17:52:46,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:52:46,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-17 17:52:46,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-17 17:52:46,406 INFO L87 Difference]: Start difference. First operand 144 states and 314 transitions. Second operand 7 states. [2020-04-17 17:52:46,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:52:46,477 INFO L93 Difference]: Finished difference Result 133 states and 290 transitions. [2020-04-17 17:52:46,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 17:52:46,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-17 17:52:46,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:52:46,478 INFO L225 Difference]: With dead ends: 133 [2020-04-17 17:52:46,479 INFO L226 Difference]: Without dead ends: 52 [2020-04-17 17:52:46,479 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-04-17 17:52:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-17 17:52:46,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-17 17:52:46,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-17 17:52:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-04-17 17:52:46,481 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 19 [2020-04-17 17:52:46,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:52:46,482 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-04-17 17:52:46,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-17 17:52:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-04-17 17:52:46,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-17 17:52:46,483 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:52:46,483 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:52:46,484 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:52:46,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:52:46,484 INFO L82 PathProgramCache]: Analyzing trace with hash 2139262285, now seen corresponding path program 1 times [2020-04-17 17:52:46,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:52:46,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952045874] [2020-04-17 17:52:46,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:52:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:52:46,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:52:46,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952045874] [2020-04-17 17:52:46,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:52:46,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:52:46,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869378392] [2020-04-17 17:52:46,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:52:46,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:52:46,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:52:46,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:52:46,544 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 4 states. [2020-04-17 17:52:46,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:52:46,564 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-04-17 17:52:46,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:52:46,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-04-17 17:52:46,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:52:46,565 INFO L225 Difference]: With dead ends: 51 [2020-04-17 17:52:46,565 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 17:52:46,566 INFO L678 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 [2020-04-17 17:52:46,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 17:52:46,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 17:52:46,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 17:52:46,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 17:52:46,569 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-04-17 17:52:46,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:52:46,569 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 17:52:46,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:52:46,570 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 17:52:46,570 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 17:52:46,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 05:52:46 BasicIcfg [2020-04-17 17:52:46,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 17:52:46,577 INFO L168 Benchmark]: Toolchain (without parser) took 6261.05 ms. Allocated memory was 144.7 MB in the beginning and 292.0 MB in the end (delta: 147.3 MB). Free memory was 99.9 MB in the beginning and 154.7 MB in the end (delta: -54.8 MB). Peak memory consumption was 92.5 MB. Max. memory is 7.1 GB. [2020-04-17 17:52:46,578 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-17 17:52:46,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.56 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 97.9 MB in the beginning and 159.1 MB in the end (delta: -61.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-04-17 17:52:46,584 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.55 ms. Allocated memory is still 202.9 MB. Free memory was 159.1 MB in the beginning and 157.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 17:52:46,585 INFO L168 Benchmark]: Boogie Preprocessor took 28.18 ms. Allocated memory is still 202.9 MB. Free memory was 157.1 MB in the beginning and 155.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:52:46,585 INFO L168 Benchmark]: RCFGBuilder took 463.51 ms. Allocated memory is still 202.9 MB. Free memory was 155.7 MB in the beginning and 132.1 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-04-17 17:52:46,588 INFO L168 Benchmark]: TraceAbstraction took 4983.25 ms. Allocated memory was 202.9 MB in the beginning and 292.0 MB in the end (delta: 89.1 MB). Free memory was 131.5 MB in the beginning and 154.7 MB in the end (delta: -23.2 MB). Peak memory consumption was 65.9 MB. Max. memory is 7.1 GB. [2020-04-17 17:52:46,594 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 708.56 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 97.9 MB in the beginning and 159.1 MB in the end (delta: -61.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.55 ms. Allocated memory is still 202.9 MB. Free memory was 159.1 MB in the beginning and 157.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.18 ms. Allocated memory is still 202.9 MB. Free memory was 157.1 MB in the beginning and 155.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 463.51 ms. Allocated memory is still 202.9 MB. Free memory was 155.7 MB in the beginning and 132.1 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4983.25 ms. Allocated memory was 202.9 MB in the beginning and 292.0 MB in the end (delta: 89.1 MB). Free memory was 131.5 MB in the beginning and 154.7 MB in the end (delta: -23.2 MB). Peak memory consumption was 65.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 953 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 32 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 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 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 370 SDtfs, 330 SDslu, 614 SDs, 0 SdLazy, 242 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 68 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 212 NumberOfCodeBlocks, 212 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 8248 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...