/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:40:04,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:40:04,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:40:04,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:40:04,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:40:04,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:40:04,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:40:04,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:40:04,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:40:04,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:40:04,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:40:04,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:40:04,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:40:04,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:40:04,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:40:04,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:40:04,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:40:04,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:40:04,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:40:04,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:40:04,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:40:04,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:40:04,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:40:04,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:40:04,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 23:40:04,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 23:40:04,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 23:40:04,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 23:40:04,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 23:40:04,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 23:40:04,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:40:04,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:40:04,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:40:04,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:40:04,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:40:04,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:40:04,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:40:04,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:40:04,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:40:04,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:40:04,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:40:04,991 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-11 23:40:05,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:40:05,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:40:05,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:40:05,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:40:05,043 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:40:05,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:40:05,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:40:05,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:40:05,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:40:05,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:40:05,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:40:05,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:40:05,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:40:05,046 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:40:05,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:40:05,047 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:40:05,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:40:05,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:40:05,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:40:05,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:40:05,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:40:05,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:40:05,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:40:05,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:40:05,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:40:05,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:40:05,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:40:05,049 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:40:05,049 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:40:05,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:40:05,050 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:40:05,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:40:05,493 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:40:05,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:40:05,503 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:40:05,503 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:40:05,505 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-09-11 23:40:05,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/883e4ba84/dba5c2bdc3784381976791cd2dc1e780/FLAG6d9ef7d86 [2020-09-11 23:40:06,220 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:40:06,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2020-09-11 23:40:06,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/883e4ba84/dba5c2bdc3784381976791cd2dc1e780/FLAG6d9ef7d86 [2020-09-11 23:40:06,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/883e4ba84/dba5c2bdc3784381976791cd2dc1e780 [2020-09-11 23:40:06,493 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:40:06,499 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:40:06,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:40:06,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:40:06,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:40:06,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:40:06" (1/1) ... [2020-09-11 23:40:06,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b163d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:40:06, skipping insertion in model container [2020-09-11 23:40:06,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:40:06" (1/1) ... [2020-09-11 23:40:06,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:40:06,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:40:07,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:40:07,121 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:40:07,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:40:07,273 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:40:07,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:40:07 WrapperNode [2020-09-11 23:40:07,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:40:07,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:40:07,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:40:07,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:40:07,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:40:07" (1/1) ... [2020-09-11 23:40:07,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:40:07" (1/1) ... [2020-09-11 23:40:07,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:40:07,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:40:07,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:40:07,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:40:07,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:40:07" (1/1) ... [2020-09-11 23:40:07,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:40:07" (1/1) ... [2020-09-11 23:40:07,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:40:07" (1/1) ... [2020-09-11 23:40:07,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:40:07" (1/1) ... [2020-09-11 23:40:07,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:40:07" (1/1) ... [2020-09-11 23:40:07,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:40:07" (1/1) ... [2020-09-11 23:40:07,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:40:07" (1/1) ... [2020-09-11 23:40:07,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:40:07,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:40:07,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:40:07,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:40:07,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:40:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:40:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:40:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:40:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:40:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:40:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:40:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:40:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:40:07,455 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:40:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:40:07,456 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:40:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:40:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:40:07,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:40:07,464 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 23:40:07,871 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:40:07,871 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:40:07,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:40:07 BoogieIcfgContainer [2020-09-11 23:40:07,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:40:07,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:40:07,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:40:07,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:40:07,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:40:06" (1/3) ... [2020-09-11 23:40:07,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71543b6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:40:07, skipping insertion in model container [2020-09-11 23:40:07,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:40:07" (2/3) ... [2020-09-11 23:40:07,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71543b6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:40:07, skipping insertion in model container [2020-09-11 23:40:07,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:40:07" (3/3) ... [2020-09-11 23:40:07,898 INFO L109 eAbstractionObserver]: Analyzing ICFG safe012_tso.oepc.i [2020-09-11 23:40:07,911 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:40:07,911 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:40:07,922 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:40:07,923 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:40:07,956 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,957 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,957 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,957 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,959 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,959 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,960 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,960 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,961 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,961 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,961 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,961 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,962 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,962 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,967 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,967 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,967 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,968 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,975 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,975 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,975 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,976 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,978 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,978 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,978 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:07,979 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:40:08,001 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 23:40:08,025 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:40:08,026 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:40:08,026 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:40:08,026 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:40:08,026 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:40:08,026 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:40:08,027 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:40:08,027 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:40:08,044 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-09-11 23:40:08,046 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-09-11 23:40:08,098 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-09-11 23:40:08,098 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:40:08,105 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:40:08,108 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-09-11 23:40:08,141 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-09-11 23:40:08,141 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:40:08,142 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:40:08,144 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 23:40:08,145 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:40:09,384 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-09-11 23:40:09,483 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-09-11 23:40:09,483 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-09-11 23:40:09,488 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-11 23:40:09,520 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-11 23:40:09,523 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-11 23:40:09,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:40:09,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:40:09,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:40:09,535 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:40:09,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:40:09,542 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-09-11 23:40:09,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:40:09,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522108875] [2020-09-11 23:40:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:40:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:40:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:40:09,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522108875] [2020-09-11 23:40:09,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:40:09,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:40:09,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [62619163] [2020-09-11 23:40:09,777 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:40:09,780 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:40:09,794 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 23:40:09,795 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:40:09,797 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:40:09,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-11 23:40:09,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:40:09,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-11 23:40:09,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 23:40:09,820 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-11 23:40:09,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:40:09,854 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-11 23:40:09,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-11 23:40:09,855 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-11 23:40:09,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:40:09,876 INFO L225 Difference]: With dead ends: 362 [2020-09-11 23:40:09,877 INFO L226 Difference]: Without dead ends: 298 [2020-09-11 23:40:09,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 23:40:09,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-11 23:40:09,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-11 23:40:09,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-11 23:40:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-11 23:40:09,971 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-11 23:40:09,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:40:09,972 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-11 23:40:09,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-11 23:40:09,973 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-11 23:40:09,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 23:40:09,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:40:09,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:40:09,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:40:09,977 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:40:09,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:40:09,977 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-09-11 23:40:09,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:40:09,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760986774] [2020-09-11 23:40:09,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:40:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:40:10,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:40:10,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760986774] [2020-09-11 23:40:10,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:40:10,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:40:10,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2130004161] [2020-09-11 23:40:10,200 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:40:10,201 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:40:10,202 INFO L274 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-09-11 23:40:10,203 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:40:10,203 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:40:10,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:40:10,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:40:10,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:40:10,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:40:10,206 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-09-11 23:40:10,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:40:10,243 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-09-11 23:40:10,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:40:10,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 23:40:10,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:40:10,247 INFO L225 Difference]: With dead ends: 330 [2020-09-11 23:40:10,248 INFO L226 Difference]: Without dead ends: 266 [2020-09-11 23:40:10,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:40:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-11 23:40:10,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-09-11 23:40:10,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-11 23:40:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-09-11 23:40:10,290 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-09-11 23:40:10,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:40:10,290 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-09-11 23:40:10,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:40:10,290 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-09-11 23:40:10,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 23:40:10,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:40:10,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:40:10,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:40:10,293 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:40:10,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:40:10,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1345064228, now seen corresponding path program 1 times [2020-09-11 23:40:10,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:40:10,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158896008] [2020-09-11 23:40:10,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:40:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:40:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:40:10,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158896008] [2020-09-11 23:40:10,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:40:10,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:40:10,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1704214614] [2020-09-11 23:40:10,398 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:40:10,399 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:40:10,400 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-09-11 23:40:10,401 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:40:10,408 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:40:10,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:40:10,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:40:10,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:40:10,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:40:10,410 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-09-11 23:40:10,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:40:10,483 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-09-11 23:40:10,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:40:10,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-11 23:40:10,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:40:10,487 INFO L225 Difference]: With dead ends: 290 [2020-09-11 23:40:10,487 INFO L226 Difference]: Without dead ends: 242 [2020-09-11 23:40:10,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:40:10,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-11 23:40:10,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-09-11 23:40:10,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-09-11 23:40:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-09-11 23:40:10,501 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-09-11 23:40:10,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:40:10,501 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-09-11 23:40:10,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:40:10,502 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-09-11 23:40:10,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:40:10,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:40:10,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:40:10,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:40:10,504 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:40:10,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:40:10,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1654538757, now seen corresponding path program 1 times [2020-09-11 23:40:10,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:40:10,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280680515] [2020-09-11 23:40:10,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:40:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:40:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:40:10,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280680515] [2020-09-11 23:40:10,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:40:10,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:40:10,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1866579494] [2020-09-11 23:40:10,593 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:40:10,594 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:40:10,596 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-09-11 23:40:10,596 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:40:10,688 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:40:10,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:40:10,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:40:10,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:40:10,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:40:10,689 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-09-11 23:40:10,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:40:10,755 INFO L93 Difference]: Finished difference Result 302 states and 815 transitions. [2020-09-11 23:40:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 23:40:10,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-11 23:40:10,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:40:10,758 INFO L225 Difference]: With dead ends: 302 [2020-09-11 23:40:10,758 INFO L226 Difference]: Without dead ends: 140 [2020-09-11 23:40:10,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-11 23:40:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-11 23:40:10,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-09-11 23:40:10,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-11 23:40:10,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 354 transitions. [2020-09-11 23:40:10,765 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 354 transitions. Word has length 11 [2020-09-11 23:40:10,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:40:10,765 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 354 transitions. [2020-09-11 23:40:10,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:40:10,766 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 354 transitions. [2020-09-11 23:40:10,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 23:40:10,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:40:10,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:40:10,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:40:10,767 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:40:10,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:40:10,768 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 1 times [2020-09-11 23:40:10,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:40:10,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909198512] [2020-09-11 23:40:10,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:40:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:40:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:40:10,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909198512] [2020-09-11 23:40:10,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:40:10,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:40:10,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1243337224] [2020-09-11 23:40:10,844 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:40:10,845 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:40:10,847 INFO L274 McrAutomatonBuilder]: Finished intersection with 16 states and 18 transitions. [2020-09-11 23:40:10,847 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:40:10,857 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:40:10,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:40:10,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:40:10,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:40:10,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:40:10,859 INFO L87 Difference]: Start difference. First operand 140 states and 354 transitions. Second operand 5 states. [2020-09-11 23:40:10,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:40:10,936 INFO L93 Difference]: Finished difference Result 176 states and 428 transitions. [2020-09-11 23:40:10,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 23:40:10,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-11 23:40:10,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:40:10,938 INFO L225 Difference]: With dead ends: 176 [2020-09-11 23:40:10,938 INFO L226 Difference]: Without dead ends: 80 [2020-09-11 23:40:10,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-11 23:40:10,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-11 23:40:10,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-11 23:40:10,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-11 23:40:10,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-09-11 23:40:10,942 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 12 [2020-09-11 23:40:10,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:40:10,943 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-09-11 23:40:10,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:40:10,943 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-09-11 23:40:10,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:40:10,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:40:10,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:40:10,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:40:10,945 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:40:10,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:40:10,945 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-09-11 23:40:10,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:40:10,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264834018] [2020-09-11 23:40:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:40:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:40:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:40:11,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264834018] [2020-09-11 23:40:11,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:40:11,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:40:11,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [606942484] [2020-09-11 23:40:11,036 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:40:11,038 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:40:11,041 INFO L274 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-09-11 23:40:11,041 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:40:11,085 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:40:11,103 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:40:11,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:40:11,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:40:11,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:40:11,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:40:11,105 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-09-11 23:40:11,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:40:11,137 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-09-11 23:40:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:40:11,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-11 23:40:11,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:40:11,138 INFO L225 Difference]: With dead ends: 91 [2020-09-11 23:40:11,138 INFO L226 Difference]: Without dead ends: 69 [2020-09-11 23:40:11,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:40:11,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-11 23:40:11,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-11 23:40:11,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-11 23:40:11,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-09-11 23:40:11,142 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-09-11 23:40:11,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:40:11,143 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-09-11 23:40:11,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:40:11,143 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-09-11 23:40:11,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:40:11,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:40:11,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:40:11,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 23:40:11,144 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:40:11,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:40:11,145 INFO L82 PathProgramCache]: Analyzing trace with hash 822538733, now seen corresponding path program 1 times [2020-09-11 23:40:11,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:40:11,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732694018] [2020-09-11 23:40:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:40:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:40:11,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:40:11,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732694018] [2020-09-11 23:40:11,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:40:11,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:40:11,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2045730896] [2020-09-11 23:40:11,230 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:40:11,232 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:40:11,236 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 39 transitions. [2020-09-11 23:40:11,236 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:40:11,316 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4597#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:40:11,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 23:40:11,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:40:11,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 23:40:11,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 23:40:11,318 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 6 states. [2020-09-11 23:40:11,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:40:11,378 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-09-11 23:40:11,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 23:40:11,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-11 23:40:11,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:40:11,379 INFO L225 Difference]: With dead ends: 65 [2020-09-11 23:40:11,379 INFO L226 Difference]: Without dead ends: 50 [2020-09-11 23:40:11,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:40:11,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-11 23:40:11,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-11 23:40:11,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-11 23:40:11,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-09-11 23:40:11,383 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-09-11 23:40:11,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:40:11,383 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-09-11 23:40:11,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 23:40:11,383 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-09-11 23:40:11,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-11 23:40:11,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:40:11,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:40:11,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 23:40:11,385 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:40:11,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:40:11,385 INFO L82 PathProgramCache]: Analyzing trace with hash -246333940, now seen corresponding path program 1 times [2020-09-11 23:40:11,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:40:11,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183434764] [2020-09-11 23:40:11,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:40:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:40:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:40:11,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183434764] [2020-09-11 23:40:11,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:40:11,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 23:40:11,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1097976323] [2020-09-11 23:40:11,476 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:40:11,478 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:40:11,482 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 38 transitions. [2020-09-11 23:40:11,482 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:40:11,534 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4771#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:40:11,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 23:40:11,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:40:11,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 23:40:11,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:40:11,535 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 7 states. [2020-09-11 23:40:11,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:40:11,584 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-09-11 23:40:11,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:40:11,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-09-11 23:40:11,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:40:11,585 INFO L225 Difference]: With dead ends: 43 [2020-09-11 23:40:11,585 INFO L226 Difference]: Without dead ends: 37 [2020-09-11 23:40:11,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-11 23:40:11,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-11 23:40:11,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-11 23:40:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-11 23:40:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-09-11 23:40:11,588 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-09-11 23:40:11,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:40:11,588 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-09-11 23:40:11,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 23:40:11,589 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-09-11 23:40:11,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-11 23:40:11,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:40:11,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:40:11,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 23:40:11,590 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:40:11,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:40:11,590 INFO L82 PathProgramCache]: Analyzing trace with hash -570484421, now seen corresponding path program 1 times [2020-09-11 23:40:11,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:40:11,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037948047] [2020-09-11 23:40:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:40:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:40:11,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:40:11,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037948047] [2020-09-11 23:40:11,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:40:11,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:40:11,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [944320538] [2020-09-11 23:40:11,668 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:40:11,670 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:40:11,675 INFO L274 McrAutomatonBuilder]: Finished intersection with 31 states and 42 transitions. [2020-09-11 23:40:11,675 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:40:11,715 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:40:11,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:40:11,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:40:11,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:40:11,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:40:11,717 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-09-11 23:40:11,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:40:11,743 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-09-11 23:40:11,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:40:11,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-11 23:40:11,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:40:11,744 INFO L225 Difference]: With dead ends: 36 [2020-09-11 23:40:11,744 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:40:11,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:40:11,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:40:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:40:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:40:11,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:40:11,746 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-11 23:40:11,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:40:11,746 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:40:11,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:40:11,746 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:40:11,746 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:40:11,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 23:40:11,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:40:11 BasicIcfg [2020-09-11 23:40:11,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:40:11,754 INFO L168 Benchmark]: Toolchain (without parser) took 5258.98 ms. Allocated memory was 146.8 MB in the beginning and 244.8 MB in the end (delta: 98.0 MB). Free memory was 102.8 MB in the beginning and 99.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 101.9 MB. Max. memory is 7.1 GB. [2020-09-11 23:40:11,755 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:40:11,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.65 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 102.1 MB in the beginning and 162.6 MB in the end (delta: -60.5 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-09-11 23:40:11,756 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.02 ms. Allocated memory is still 205.0 MB. Free memory was 162.6 MB in the beginning and 160.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-11 23:40:11,757 INFO L168 Benchmark]: Boogie Preprocessor took 36.35 ms. Allocated memory is still 205.0 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 23:40:11,758 INFO L168 Benchmark]: RCFGBuilder took 496.32 ms. Allocated memory is still 205.0 MB. Free memory was 158.7 MB in the beginning and 136.1 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-09-11 23:40:11,759 INFO L168 Benchmark]: TraceAbstraction took 3870.42 ms. Allocated memory was 205.0 MB in the beginning and 244.8 MB in the end (delta: 39.8 MB). Free memory was 136.1 MB in the beginning and 99.0 MB in the end (delta: 37.1 MB). Peak memory consumption was 76.9 MB. Max. memory is 7.1 GB. [2020-09-11 23:40:11,763 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 774.65 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 102.1 MB in the beginning and 162.6 MB in the end (delta: -60.5 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 68.02 ms. Allocated memory is still 205.0 MB. Free memory was 162.6 MB in the beginning and 160.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.35 ms. Allocated memory is still 205.0 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 496.32 ms. Allocated memory is still 205.0 MB. Free memory was 158.7 MB in the beginning and 136.1 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3870.42 ms. Allocated memory was 205.0 MB in the beginning and 244.8 MB in the end (delta: 39.8 MB). Free memory was 136.1 MB in the beginning and 99.0 MB in the end (delta: 37.1 MB). Peak memory consumption was 76.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 678 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 183 SDtfs, 190 SDslu, 296 SDs, 0 SdLazy, 137 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4323 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...