/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/safe004_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-14 21:57:18,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 21:57:18,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 21:57:18,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 21:57:18,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 21:57:18,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 21:57:18,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 21:57:18,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 21:57:18,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 21:57:18,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 21:57:18,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 21:57:18,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 21:57:18,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 21:57:18,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 21:57:18,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 21:57:18,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 21:57:18,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 21:57:18,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 21:57:18,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 21:57:18,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 21:57:18,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 21:57:18,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 21:57:18,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 21:57:18,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 21:57:18,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-14 21:57:18,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-14 21:57:18,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-14 21:57:18,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-14 21:57:18,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-14 21:57:18,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-14 21:57:18,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 21:57:18,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 21:57:18,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 21:57:18,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 21:57:18,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 21:57:18,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 21:57:18,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 21:57:18,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 21:57:18,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 21:57:18,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 21:57:18,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 21:57:18,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-14 21:57:18,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 21:57:18,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 21:57:18,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 21:57:18,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 21:57:18,940 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 21:57:18,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 21:57:18,941 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 21:57:18,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 21:57:18,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 21:57:18,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 21:57:18,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 21:57:18,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 21:57:18,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 21:57:18,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 21:57:18,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 21:57:18,943 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 21:57:18,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 21:57:18,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 21:57:18,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 21:57:18,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 21:57:18,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 21:57:18,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 21:57:18,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 21:57:18,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 21:57:18,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 21:57:18,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 21:57:18,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 21:57:18,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 21:57:18,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 21:57:18,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 21:57:19,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 21:57:19,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 21:57:19,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 21:57:19,424 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 21:57:19,425 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 21:57:19,426 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-09-14 21:57:19,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97b3aff1f/9a75331b59794b789e7ae19b8259515d/FLAG11e7a4f2f [2020-09-14 21:57:20,107 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 21:57:20,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-09-14 21:57:20,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97b3aff1f/9a75331b59794b789e7ae19b8259515d/FLAG11e7a4f2f [2020-09-14 21:57:20,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97b3aff1f/9a75331b59794b789e7ae19b8259515d [2020-09-14 21:57:20,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 21:57:20,402 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 21:57:20,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 21:57:20,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 21:57:20,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 21:57:20,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 09:57:20" (1/1) ... [2020-09-14 21:57:20,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d953c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:57:20, skipping insertion in model container [2020-09-14 21:57:20,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 09:57:20" (1/1) ... [2020-09-14 21:57:20,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 21:57:20,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 21:57:20,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 21:57:21,018 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 21:57:21,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 21:57:21,183 INFO L208 MainTranslator]: Completed translation [2020-09-14 21:57:21,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:57:21 WrapperNode [2020-09-14 21:57:21,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 21:57:21,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 21:57:21,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 21:57:21,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 21:57:21,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:57:21" (1/1) ... [2020-09-14 21:57:21,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:57:21" (1/1) ... [2020-09-14 21:57:21,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 21:57:21,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 21:57:21,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 21:57:21,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 21:57:21,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:57:21" (1/1) ... [2020-09-14 21:57:21,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:57:21" (1/1) ... [2020-09-14 21:57:21,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:57:21" (1/1) ... [2020-09-14 21:57:21,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:57:21" (1/1) ... [2020-09-14 21:57:21,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:57:21" (1/1) ... [2020-09-14 21:57:21,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:57:21" (1/1) ... [2020-09-14 21:57:21,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:57:21" (1/1) ... [2020-09-14 21:57:21,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 21:57:21,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 21:57:21,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 21:57:21,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 21:57:21,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:57:21" (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 [2020-09-14 21:57:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 21:57:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-14 21:57:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 21:57:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 21:57:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-14 21:57:21,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-14 21:57:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-14 21:57:21,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-14 21:57:21,358 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-14 21:57:21,358 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-14 21:57:21,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-14 21:57:21,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 21:57:21,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 21:57:21,361 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 21:57:21,773 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 21:57:21,774 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-14 21:57:21,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 09:57:21 BoogieIcfgContainer [2020-09-14 21:57:21,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 21:57:21,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 21:57:21,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 21:57:21,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 21:57:21,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 09:57:20" (1/3) ... [2020-09-14 21:57:21,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8d07fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 09:57:21, skipping insertion in model container [2020-09-14 21:57:21,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 09:57:21" (2/3) ... [2020-09-14 21:57:21,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8d07fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 09:57:21, skipping insertion in model container [2020-09-14 21:57:21,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 09:57:21" (3/3) ... [2020-09-14 21:57:21,789 INFO L109 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2020-09-14 21:57:21,801 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 21:57:21,802 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 21:57:21,811 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 21:57:21,813 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 21:57:21,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,845 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,845 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,847 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,847 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,847 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,848 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,849 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,849 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,850 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,850 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,855 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,856 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,866 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,866 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,867 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,870 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,871 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,871 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,871 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 21:57:21,898 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-14 21:57:21,926 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 21:57:21,926 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 21:57:21,927 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 21:57:21,927 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 21:57:21,927 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 21:57:21,927 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 21:57:21,927 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 21:57:21,928 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 21:57:21,946 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-14 21:57:21,949 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-14 21:57:21,999 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-14 21:57:22,000 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 21:57:22,006 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-14 21:57:22,009 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-14 21:57:22,030 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-14 21:57:22,031 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 21:57:22,031 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-14 21:57:22,034 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-14 21:57:22,035 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 21:57:23,722 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-14 21:57:23,910 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-09-14 21:57:23,911 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-09-14 21:57:23,915 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-14 21:57:23,942 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-14 21:57:23,945 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-14 21:57:23,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-14 21:57:23,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:57:23,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:57:23,956 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:57:23,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:57:23,964 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-09-14 21:57:23,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:57:23,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768849325] [2020-09-14 21:57:23,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:57:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:57:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:57:24,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768849325] [2020-09-14 21:57:24,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:57:24,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 21:57:24,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46934713] [2020-09-14 21:57:24,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 21:57:24,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:57:24,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 21:57:24,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 21:57:24,291 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-14 21:57:24,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:57:24,343 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-14 21:57:24,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 21:57:24,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-14 21:57:24,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:57:24,366 INFO L225 Difference]: With dead ends: 282 [2020-09-14 21:57:24,366 INFO L226 Difference]: Without dead ends: 218 [2020-09-14 21:57:24,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 21:57:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-14 21:57:24,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-14 21:57:24,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-14 21:57:24,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-14 21:57:24,440 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-14 21:57:24,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:57:24,442 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-14 21:57:24,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 21:57:24,442 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-14 21:57:24,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 21:57:24,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:57:24,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:57:24,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 21:57:24,444 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:57:24,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:57:24,445 INFO L82 PathProgramCache]: Analyzing trace with hash 971209488, now seen corresponding path program 1 times [2020-09-14 21:57:24,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:57:24,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467584759] [2020-09-14 21:57:24,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:57:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:57:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:57:24,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467584759] [2020-09-14 21:57:24,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:57:24,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 21:57:24,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756894692] [2020-09-14 21:57:24,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 21:57:24,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:57:24,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 21:57:24,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 21:57:24,568 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-14 21:57:24,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:57:24,610 INFO L93 Difference]: Finished difference Result 296 states and 796 transitions. [2020-09-14 21:57:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 21:57:24,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-14 21:57:24,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:57:24,613 INFO L225 Difference]: With dead ends: 296 [2020-09-14 21:57:24,614 INFO L226 Difference]: Without dead ends: 200 [2020-09-14 21:57:24,615 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 [2020-09-14 21:57:24,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-09-14 21:57:24,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-09-14 21:57:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-14 21:57:24,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 536 transitions. [2020-09-14 21:57:24,648 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 536 transitions. Word has length 9 [2020-09-14 21:57:24,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:57:24,648 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 536 transitions. [2020-09-14 21:57:24,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 21:57:24,649 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 536 transitions. [2020-09-14 21:57:24,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 21:57:24,650 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:57:24,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:57:24,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 21:57:24,651 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:57:24,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:57:24,651 INFO L82 PathProgramCache]: Analyzing trace with hash -222134721, now seen corresponding path program 1 times [2020-09-14 21:57:24,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:57:24,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126774044] [2020-09-14 21:57:24,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:57:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:57:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:57:24,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126774044] [2020-09-14 21:57:24,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:57:24,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 21:57:24,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482492397] [2020-09-14 21:57:24,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 21:57:24,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:57:24,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 21:57:24,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 21:57:24,739 INFO L87 Difference]: Start difference. First operand 200 states and 536 transitions. Second operand 4 states. [2020-09-14 21:57:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:57:24,771 INFO L93 Difference]: Finished difference Result 314 states and 804 transitions. [2020-09-14 21:57:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 21:57:24,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-14 21:57:24,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:57:24,774 INFO L225 Difference]: With dead ends: 314 [2020-09-14 21:57:24,774 INFO L226 Difference]: Without dead ends: 182 [2020-09-14 21:57:24,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 21:57:24,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-09-14 21:57:24,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2020-09-14 21:57:24,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-14 21:57:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 354 transitions. [2020-09-14 21:57:24,787 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 354 transitions. Word has length 10 [2020-09-14 21:57:24,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:57:24,787 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 354 transitions. [2020-09-14 21:57:24,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 21:57:24,787 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 354 transitions. [2020-09-14 21:57:24,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-14 21:57:24,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:57:24,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:57:24,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 21:57:24,789 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:57:24,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:57:24,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1304596236, now seen corresponding path program 1 times [2020-09-14 21:57:24,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:57:24,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12515440] [2020-09-14 21:57:24,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:57:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:57:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:57:24,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12515440] [2020-09-14 21:57:24,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:57:24,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 21:57:24,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39784637] [2020-09-14 21:57:24,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 21:57:24,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:57:24,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 21:57:24,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 21:57:24,844 INFO L87 Difference]: Start difference. First operand 146 states and 354 transitions. Second operand 3 states. [2020-09-14 21:57:24,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:57:24,871 INFO L93 Difference]: Finished difference Result 176 states and 419 transitions. [2020-09-14 21:57:24,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 21:57:24,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-14 21:57:24,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:57:24,872 INFO L225 Difference]: With dead ends: 176 [2020-09-14 21:57:24,873 INFO L226 Difference]: Without dead ends: 86 [2020-09-14 21:57:24,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 21:57:24,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-14 21:57:24,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-09-14 21:57:24,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-14 21:57:24,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 199 transitions. [2020-09-14 21:57:24,879 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 199 transitions. Word has length 11 [2020-09-14 21:57:24,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:57:24,879 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 199 transitions. [2020-09-14 21:57:24,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 21:57:24,879 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 199 transitions. [2020-09-14 21:57:24,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 21:57:24,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:57:24,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:57:24,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 21:57:24,881 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:57:24,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:57:24,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1787778239, now seen corresponding path program 1 times [2020-09-14 21:57:24,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:57:24,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184794013] [2020-09-14 21:57:24,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:57:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:57:24,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:57:24,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184794013] [2020-09-14 21:57:24,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:57:24,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-14 21:57:24,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844895712] [2020-09-14 21:57:24,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 21:57:24,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:57:24,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 21:57:24,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 21:57:24,935 INFO L87 Difference]: Start difference. First operand 86 states and 199 transitions. Second operand 3 states. [2020-09-14 21:57:24,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:57:24,940 INFO L93 Difference]: Finished difference Result 80 states and 180 transitions. [2020-09-14 21:57:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 21:57:24,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-14 21:57:24,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:57:24,941 INFO L225 Difference]: With dead ends: 80 [2020-09-14 21:57:24,941 INFO L226 Difference]: Without dead ends: 80 [2020-09-14 21:57:24,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 21:57:24,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-14 21:57:24,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-14 21:57:24,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-14 21:57:24,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 180 transitions. [2020-09-14 21:57:24,947 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 180 transitions. Word has length 12 [2020-09-14 21:57:24,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:57:24,947 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 180 transitions. [2020-09-14 21:57:24,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 21:57:24,947 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 180 transitions. [2020-09-14 21:57:24,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 21:57:24,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:57:24,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:57:24,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 21:57:24,949 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:57:24,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:57:24,949 INFO L82 PathProgramCache]: Analyzing trace with hash 413447767, now seen corresponding path program 1 times [2020-09-14 21:57:24,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:57:24,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589025143] [2020-09-14 21:57:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:57:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:57:25,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:57:25,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589025143] [2020-09-14 21:57:25,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:57:25,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 21:57:25,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68713328] [2020-09-14 21:57:25,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 21:57:25,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:57:25,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 21:57:25,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 21:57:25,026 INFO L87 Difference]: Start difference. First operand 80 states and 180 transitions. Second operand 4 states. [2020-09-14 21:57:25,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:57:25,054 INFO L93 Difference]: Finished difference Result 104 states and 232 transitions. [2020-09-14 21:57:25,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 21:57:25,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-14 21:57:25,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:57:25,056 INFO L225 Difference]: With dead ends: 104 [2020-09-14 21:57:25,056 INFO L226 Difference]: Without dead ends: 68 [2020-09-14 21:57:25,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-14 21:57:25,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-14 21:57:25,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-14 21:57:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-14 21:57:25,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-09-14 21:57:25,060 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-09-14 21:57:25,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:57:25,061 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-09-14 21:57:25,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 21:57:25,061 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-09-14 21:57:25,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 21:57:25,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:57:25,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:57:25,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 21:57:25,063 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:57:25,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:57:25,063 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 2 times [2020-09-14 21:57:25,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:57:25,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087380757] [2020-09-14 21:57:25,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:57:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:57:25,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:57:25,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087380757] [2020-09-14 21:57:25,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:57:25,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 21:57:25,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182967579] [2020-09-14 21:57:25,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 21:57:25,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:57:25,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 21:57:25,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 21:57:25,150 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-09-14 21:57:25,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:57:25,192 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-09-14 21:57:25,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 21:57:25,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-14 21:57:25,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:57:25,194 INFO L225 Difference]: With dead ends: 81 [2020-09-14 21:57:25,194 INFO L226 Difference]: Without dead ends: 59 [2020-09-14 21:57:25,194 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 [2020-09-14 21:57:25,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-14 21:57:25,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-14 21:57:25,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-14 21:57:25,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-09-14 21:57:25,198 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-09-14 21:57:25,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:57:25,198 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-09-14 21:57:25,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 21:57:25,199 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-09-14 21:57:25,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-14 21:57:25,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:57:25,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:57:25,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 21:57:25,200 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:57:25,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:57:25,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-09-14 21:57:25,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:57:25,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455194734] [2020-09-14 21:57:25,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:57:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:57:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:57:25,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455194734] [2020-09-14 21:57:25,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:57:25,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 21:57:25,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170786282] [2020-09-14 21:57:25,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 21:57:25,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:57:25,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 21:57:25,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 21:57:25,281 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-09-14 21:57:25,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:57:25,323 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-09-14 21:57:25,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 21:57:25,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-14 21:57:25,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:57:25,324 INFO L225 Difference]: With dead ends: 60 [2020-09-14 21:57:25,324 INFO L226 Difference]: Without dead ends: 45 [2020-09-14 21:57:25,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 21:57:25,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-14 21:57:25,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-14 21:57:25,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-14 21:57:25,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-09-14 21:57:25,327 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-09-14 21:57:25,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:57:25,328 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-09-14 21:57:25,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 21:57:25,328 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-09-14 21:57:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 21:57:25,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:57:25,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:57:25,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 21:57:25,329 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:57:25,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:57:25,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-09-14 21:57:25,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:57:25,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307116453] [2020-09-14 21:57:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:57:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:57:25,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:57:25,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307116453] [2020-09-14 21:57:25,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:57:25,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-14 21:57:25,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505847126] [2020-09-14 21:57:25,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 21:57:25,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:57:25,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 21:57:25,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-14 21:57:25,410 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-09-14 21:57:25,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:57:25,464 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-09-14 21:57:25,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-14 21:57:25,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-14 21:57:25,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:57:25,465 INFO L225 Difference]: With dead ends: 42 [2020-09-14 21:57:25,465 INFO L226 Difference]: Without dead ends: 36 [2020-09-14 21:57:25,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-14 21:57:25,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-14 21:57:25,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-14 21:57:25,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-14 21:57:25,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-14 21:57:25,468 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-09-14 21:57:25,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:57:25,468 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-14 21:57:25,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 21:57:25,468 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-14 21:57:25,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-14 21:57:25,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 21:57:25,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 21:57:25,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-14 21:57:25,470 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 21:57:25,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 21:57:25,470 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-09-14 21:57:25,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 21:57:25,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407161998] [2020-09-14 21:57:25,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 21:57:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 21:57:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 21:57:25,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407161998] [2020-09-14 21:57:25,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 21:57:25,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 21:57:25,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288492027] [2020-09-14 21:57:25,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-14 21:57:25,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 21:57:25,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-14 21:57:25,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 21:57:25,515 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-09-14 21:57:25,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 21:57:25,520 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-14 21:57:25,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-14 21:57:25,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-14 21:57:25,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 21:57:25,521 INFO L225 Difference]: With dead ends: 35 [2020-09-14 21:57:25,521 INFO L226 Difference]: Without dead ends: 0 [2020-09-14 21:57:25,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-14 21:57:25,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-14 21:57:25,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-14 21:57:25,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-14 21:57:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-14 21:57:25,522 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-14 21:57:25,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 21:57:25,523 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-14 21:57:25,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-14 21:57:25,523 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-14 21:57:25,523 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-14 21:57:25,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-14 21:57:25,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 09:57:25 BasicIcfg [2020-09-14 21:57:25,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-14 21:57:25,531 INFO L168 Benchmark]: Toolchain (without parser) took 5132.56 ms. Allocated memory was 140.5 MB in the beginning and 246.9 MB in the end (delta: 106.4 MB). Free memory was 102.3 MB in the beginning and 138.0 MB in the end (delta: -35.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 7.1 GB. [2020-09-14 21:57:25,532 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-14 21:57:25,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 782.05 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 101.6 MB in the beginning and 163.2 MB in the end (delta: -61.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-09-14 21:57:25,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.83 ms. Allocated memory is still 205.5 MB. Free memory was 163.2 MB in the beginning and 161.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-14 21:57:25,534 INFO L168 Benchmark]: Boogie Preprocessor took 28.21 ms. Allocated memory is still 205.5 MB. Free memory was 161.3 MB in the beginning and 159.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-14 21:57:25,535 INFO L168 Benchmark]: RCFGBuilder took 501.75 ms. Allocated memory is still 205.5 MB. Free memory was 159.9 MB in the beginning and 138.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-14 21:57:25,536 INFO L168 Benchmark]: TraceAbstraction took 3747.58 ms. Allocated memory was 205.5 MB in the beginning and 246.9 MB in the end (delta: 41.4 MB). Free memory was 137.4 MB in the beginning and 138.0 MB in the end (delta: -623.6 kB). Peak memory consumption was 40.8 MB. Max. memory is 7.1 GB. [2020-09-14 21:57:25,540 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 782.05 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 101.6 MB in the beginning and 163.2 MB in the end (delta: -61.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.83 ms. Allocated memory is still 205.5 MB. Free memory was 163.2 MB in the beginning and 161.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.21 ms. Allocated memory is still 205.5 MB. Free memory was 161.3 MB in the beginning and 159.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 501.75 ms. Allocated memory is still 205.5 MB. Free memory was 159.9 MB in the beginning and 138.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3747.58 ms. Allocated memory was 205.5 MB in the beginning and 246.9 MB in the end (delta: 41.4 MB). Free memory was 137.4 MB in the beginning and 138.0 MB in the end (delta: -623.6 kB). Peak memory consumption was 40.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2483 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 193 SDtfs, 137 SDslu, 200 SDs, 0 SdLazy, 124 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 3668 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...