/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/safe013_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-16 23:54:45,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 23:54:45,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 23:54:45,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 23:54:45,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 23:54:45,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 23:54:45,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 23:54:45,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 23:54:45,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 23:54:45,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 23:54:45,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 23:54:45,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 23:54:45,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 23:54:45,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 23:54:45,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 23:54:45,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 23:54:45,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 23:54:45,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 23:54:45,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 23:54:45,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 23:54:45,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 23:54:45,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 23:54:45,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 23:54:45,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 23:54:45,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-16 23:54:45,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-16 23:54:45,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-16 23:54:45,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-16 23:54:45,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-16 23:54:45,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-16 23:54:45,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 23:54:45,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 23:54:45,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 23:54:45,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 23:54:45,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 23:54:45,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 23:54:45,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 23:54:45,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 23:54:45,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 23:54:45,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 23:54:45,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 23:54:45,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-16 23:54:45,765 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 23:54:45,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 23:54:45,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 23:54:45,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 23:54:45,767 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 23:54:45,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 23:54:45,767 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 23:54:45,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 23:54:45,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 23:54:45,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 23:54:45,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 23:54:45,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 23:54:45,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 23:54:45,769 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 23:54:45,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 23:54:45,769 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 23:54:45,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 23:54:45,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 23:54:45,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 23:54:45,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 23:54:45,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 23:54:45,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 23:54:45,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 23:54:45,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-16 23:54:45,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 23:54:45,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 23:54:45,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 23:54:45,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 23:54:45,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-16 23:54:45,772 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-16 23:54:46,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 23:54:46,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 23:54:46,258 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 23:54:46,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 23:54:46,260 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 23:54:46,262 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-09-16 23:54:46,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7aa6568e/dec64cdffca444ff9436699761632270/FLAGfdc8c3125 [2020-09-16 23:54:46,976 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 23:54:46,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-09-16 23:54:47,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7aa6568e/dec64cdffca444ff9436699761632270/FLAGfdc8c3125 [2020-09-16 23:54:47,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7aa6568e/dec64cdffca444ff9436699761632270 [2020-09-16 23:54:47,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 23:54:47,237 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 23:54:47,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 23:54:47,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 23:54:47,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 23:54:47,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:54:47" (1/1) ... [2020-09-16 23:54:47,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5631f83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:47, skipping insertion in model container [2020-09-16 23:54:47,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:54:47" (1/1) ... [2020-09-16 23:54:47,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 23:54:47,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 23:54:47,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:54:47,928 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 23:54:47,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:54:48,073 INFO L208 MainTranslator]: Completed translation [2020-09-16 23:54:48,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:48 WrapperNode [2020-09-16 23:54:48,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 23:54:48,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 23:54:48,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 23:54:48,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 23:54:48,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:48" (1/1) ... [2020-09-16 23:54:48,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:48" (1/1) ... [2020-09-16 23:54:48,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 23:54:48,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 23:54:48,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 23:54:48,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 23:54:48,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:48" (1/1) ... [2020-09-16 23:54:48,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:48" (1/1) ... [2020-09-16 23:54:48,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:48" (1/1) ... [2020-09-16 23:54:48,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:48" (1/1) ... [2020-09-16 23:54:48,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:48" (1/1) ... [2020-09-16 23:54:48,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:48" (1/1) ... [2020-09-16 23:54:48,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:48" (1/1) ... [2020-09-16 23:54:48,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 23:54:48,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 23:54:48,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 23:54:48,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 23:54:48,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 23:54:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 23:54:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 23:54:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 23:54:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 23:54:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 23:54:48,284 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 23:54:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 23:54:48,285 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 23:54:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 23:54:48,286 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 23:54:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 23:54:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 23:54:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 23:54:48,292 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 23:54:48,760 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 23:54:48,760 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 23:54:48,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:54:48 BoogieIcfgContainer [2020-09-16 23:54:48,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 23:54:48,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 23:54:48,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 23:54:48,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 23:54:48,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:54:47" (1/3) ... [2020-09-16 23:54:48,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cd354e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:54:48, skipping insertion in model container [2020-09-16 23:54:48,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:48" (2/3) ... [2020-09-16 23:54:48,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cd354e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:54:48, skipping insertion in model container [2020-09-16 23:54:48,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:54:48" (3/3) ... [2020-09-16 23:54:48,776 INFO L109 eAbstractionObserver]: Analyzing ICFG safe013_tso.oepc.i [2020-09-16 23:54:48,787 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 23:54:48,787 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-16 23:54:48,799 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 23:54:48,800 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 23:54:48,831 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,831 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,832 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,832 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,832 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,833 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,833 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,833 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,834 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,834 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,834 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,835 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,835 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,835 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,836 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,836 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,836 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,836 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,841 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,842 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,842 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,842 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,851 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,851 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,852 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,852 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,855 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,856 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:54:48,879 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 23:54:48,904 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 23:54:48,904 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 23:54:48,904 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 23:54:48,904 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 23:54:48,905 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 23:54:48,905 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 23:54:48,905 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 23:54:48,905 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 23:54:48,922 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-16 23:54:48,924 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-16 23:54:48,974 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-16 23:54:48,975 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:54:48,981 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 23:54:48,984 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-16 23:54:49,008 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-16 23:54:49,009 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:54:49,009 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 23:54:49,012 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-16 23:54:49,013 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 23:54:50,874 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2190 [2020-09-16 23:54:50,874 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-16 23:54:50,879 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-16 23:54:50,906 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-16 23:54:50,909 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-16 23:54:50,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 23:54:50,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:54:50,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:54:50,919 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:54:50,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:54:50,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1620259193, now seen corresponding path program 1 times [2020-09-16 23:54:50,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:54:50,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293715793] [2020-09-16 23:54:50,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:54:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:54:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:54:51,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293715793] [2020-09-16 23:54:51,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:54:51,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 23:54:51,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451784197] [2020-09-16 23:54:51,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:54:51,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:54:51,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:54:51,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:54:51,320 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-16 23:54:51,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:54:51,397 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-16 23:54:51,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:54:51,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-16 23:54:51,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:54:51,432 INFO L225 Difference]: With dead ends: 282 [2020-09-16 23:54:51,433 INFO L226 Difference]: Without dead ends: 218 [2020-09-16 23:54:51,435 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 [2020-09-16 23:54:51,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-16 23:54:51,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-16 23:54:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-16 23:54:51,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-16 23:54:51,518 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-16 23:54:51,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:54:51,520 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-16 23:54:51,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:54:51,520 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-16 23:54:51,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 23:54:51,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:54:51,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:54:51,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 23:54:51,523 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:54:51,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:54:51,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1311571333, now seen corresponding path program 1 times [2020-09-16 23:54:51,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:54:51,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145632403] [2020-09-16 23:54:51,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:54:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:54:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:54:51,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145632403] [2020-09-16 23:54:51,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:54:51,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:54:51,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373947427] [2020-09-16 23:54:51,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:54:51,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:54:51,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:54:51,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:54:51,614 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-16 23:54:51,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:54:51,643 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-16 23:54:51,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 23:54:51,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-16 23:54:51,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:54:51,646 INFO L225 Difference]: With dead ends: 242 [2020-09-16 23:54:51,646 INFO L226 Difference]: Without dead ends: 146 [2020-09-16 23:54:51,647 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 [2020-09-16 23:54:51,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-16 23:54:51,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-16 23:54:51,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-16 23:54:51,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-09-16 23:54:51,661 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-09-16 23:54:51,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:54:51,662 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-09-16 23:54:51,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:54:51,662 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-09-16 23:54:51,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 23:54:51,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:54:51,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:54:51,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 23:54:51,664 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:54:51,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:54:51,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1994932005, now seen corresponding path program 1 times [2020-09-16 23:54:51,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:54:51,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57317216] [2020-09-16 23:54:51,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:54:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:54:51,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:54:51,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57317216] [2020-09-16 23:54:51,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:54:51,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 23:54:51,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635244727] [2020-09-16 23:54:51,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:54:51,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:54:51,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:54:51,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:54:51,751 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-09-16 23:54:51,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:54:51,761 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-09-16 23:54:51,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:54:51,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-16 23:54:51,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:54:51,763 INFO L225 Difference]: With dead ends: 144 [2020-09-16 23:54:51,763 INFO L226 Difference]: Without dead ends: 144 [2020-09-16 23:54:51,764 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 [2020-09-16 23:54:51,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-16 23:54:51,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-09-16 23:54:51,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-16 23:54:51,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-09-16 23:54:51,775 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-09-16 23:54:51,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:54:51,775 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-09-16 23:54:51,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:54:51,775 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-09-16 23:54:51,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 23:54:51,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:54:51,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:54:51,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 23:54:51,777 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:54:51,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:54:51,778 INFO L82 PathProgramCache]: Analyzing trace with hash 315672505, now seen corresponding path program 1 times [2020-09-16 23:54:51,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:54:51,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181916398] [2020-09-16 23:54:51,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:54:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:54:51,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:54:51,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181916398] [2020-09-16 23:54:51,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:54:51,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:54:51,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776842698] [2020-09-16 23:54:51,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:54:51,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:54:51,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:54:51,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:54:51,875 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-09-16 23:54:51,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:54:51,909 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-09-16 23:54:51,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 23:54:51,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 23:54:51,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:54:51,912 INFO L225 Difference]: With dead ends: 164 [2020-09-16 23:54:51,913 INFO L226 Difference]: Without dead ends: 124 [2020-09-16 23:54:51,913 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 [2020-09-16 23:54:51,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-16 23:54:51,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-09-16 23:54:51,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-16 23:54:51,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-09-16 23:54:51,922 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-09-16 23:54:51,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:54:51,923 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-09-16 23:54:51,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:54:51,923 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-09-16 23:54:51,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-16 23:54:51,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:54:51,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:54:51,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 23:54:51,925 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:54:51,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:54:51,925 INFO L82 PathProgramCache]: Analyzing trace with hash 852950147, now seen corresponding path program 1 times [2020-09-16 23:54:51,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:54:51,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724754281] [2020-09-16 23:54:51,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:54:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:54:52,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:54:52,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724754281] [2020-09-16 23:54:52,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:54:52,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:54:52,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153603609] [2020-09-16 23:54:52,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 23:54:52,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:54:52,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 23:54:52,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:54:52,031 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-09-16 23:54:52,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:54:52,088 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-09-16 23:54:52,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 23:54:52,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-16 23:54:52,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:54:52,096 INFO L225 Difference]: With dead ends: 122 [2020-09-16 23:54:52,097 INFO L226 Difference]: Without dead ends: 97 [2020-09-16 23:54:52,097 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 [2020-09-16 23:54:52,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-16 23:54:52,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-09-16 23:54:52,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-16 23:54:52,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-09-16 23:54:52,111 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-09-16 23:54:52,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:54:52,112 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-09-16 23:54:52,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 23:54:52,112 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-09-16 23:54:52,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 23:54:52,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:54:52,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:54:52,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 23:54:52,114 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:54:52,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:54:52,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1634628682, now seen corresponding path program 1 times [2020-09-16 23:54:52,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:54:52,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276433668] [2020-09-16 23:54:52,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:54:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:54:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:54:52,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276433668] [2020-09-16 23:54:52,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:54:52,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:54:52,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466158640] [2020-09-16 23:54:52,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:54:52,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:54:52,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:54:52,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:54:52,208 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-09-16 23:54:52,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:54:52,236 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-09-16 23:54:52,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:54:52,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-16 23:54:52,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:54:52,238 INFO L225 Difference]: With dead ends: 115 [2020-09-16 23:54:52,238 INFO L226 Difference]: Without dead ends: 98 [2020-09-16 23:54:52,239 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 [2020-09-16 23:54:52,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-16 23:54:52,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-09-16 23:54:52,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-16 23:54:52,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-09-16 23:54:52,244 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-09-16 23:54:52,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:54:52,244 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-09-16 23:54:52,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:54:52,245 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-09-16 23:54:52,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 23:54:52,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:54:52,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:54:52,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 23:54:52,246 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:54:52,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:54:52,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1887879687, now seen corresponding path program 1 times [2020-09-16 23:54:52,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:54:52,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801258876] [2020-09-16 23:54:52,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:54:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:54:52,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:54:52,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801258876] [2020-09-16 23:54:52,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:54:52,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 23:54:52,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852643721] [2020-09-16 23:54:52,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 23:54:52,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:54:52,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 23:54:52,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 23:54:52,330 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-09-16 23:54:52,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:54:52,381 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-09-16 23:54:52,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 23:54:52,382 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-16 23:54:52,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:54:52,383 INFO L225 Difference]: With dead ends: 92 [2020-09-16 23:54:52,383 INFO L226 Difference]: Without dead ends: 36 [2020-09-16 23:54:52,383 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 [2020-09-16 23:54:52,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-16 23:54:52,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-16 23:54:52,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-16 23:54:52,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-16 23:54:52,386 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-09-16 23:54:52,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:54:52,386 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-16 23:54:52,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 23:54:52,387 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-16 23:54:52,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 23:54:52,387 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:54:52,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:54:52,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 23:54:52,388 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:54:52,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:54:52,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1759545272, now seen corresponding path program 1 times [2020-09-16 23:54:52,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:54:52,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750863802] [2020-09-16 23:54:52,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:54:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:54:52,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:54:52,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750863802] [2020-09-16 23:54:52,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:54:52,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:54:52,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491189034] [2020-09-16 23:54:52,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:54:52,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:54:52,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:54:52,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:54:52,442 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-09-16 23:54:52,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:54:52,453 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-16 23:54:52,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 23:54:52,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-16 23:54:52,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:54:52,454 INFO L225 Difference]: With dead ends: 35 [2020-09-16 23:54:52,454 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 23:54:52,455 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 [2020-09-16 23:54:52,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 23:54:52,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 23:54:52,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 23:54:52,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 23:54:52,456 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-16 23:54:52,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:54:52,456 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 23:54:52,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:54:52,456 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 23:54:52,457 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 23:54:52,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 23:54:52,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:54:52 BasicIcfg [2020-09-16 23:54:52,462 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 23:54:52,465 INFO L168 Benchmark]: Toolchain (without parser) took 5232.76 ms. Allocated memory was 136.8 MB in the beginning and 254.3 MB in the end (delta: 117.4 MB). Free memory was 98.2 MB in the beginning and 190.7 MB in the end (delta: -92.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-09-16 23:54:52,466 INFO L168 Benchmark]: CDTParser took 1.48 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-16 23:54:52,467 INFO L168 Benchmark]: CACSL2BoogieTranslator took 836.69 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 97.5 MB in the beginning and 157.6 MB in the end (delta: -60.1 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-09-16 23:54:52,468 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.15 ms. Allocated memory is still 200.3 MB. Free memory was 157.6 MB in the beginning and 155.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-16 23:54:52,469 INFO L168 Benchmark]: Boogie Preprocessor took 34.66 ms. Allocated memory is still 200.3 MB. Free memory was 155.5 MB in the beginning and 154.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-16 23:54:52,469 INFO L168 Benchmark]: RCFGBuilder took 590.69 ms. Allocated memory is still 200.3 MB. Free memory was 154.1 MB in the beginning and 131.8 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-16 23:54:52,470 INFO L168 Benchmark]: TraceAbstraction took 3694.04 ms. Allocated memory was 200.3 MB in the beginning and 254.3 MB in the end (delta: 54.0 MB). Free memory was 131.1 MB in the beginning and 190.7 MB in the end (delta: -59.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-16 23:54:52,475 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.48 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 836.69 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 97.5 MB in the beginning and 157.6 MB in the end (delta: -60.1 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 66.15 ms. Allocated memory is still 200.3 MB. Free memory was 157.6 MB in the beginning and 155.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.66 ms. Allocated memory is still 200.3 MB. Free memory was 155.5 MB in the beginning and 154.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 590.69 ms. Allocated memory is still 200.3 MB. Free memory was 154.1 MB in the beginning and 131.8 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3694.04 ms. Allocated memory was 200.3 MB in the beginning and 254.3 MB in the end (delta: 54.0 MB). Free memory was 131.1 MB in the beginning and 190.7 MB in the end (delta: -59.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2190 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 145 SDtfs, 123 SDslu, 177 SDs, 0 SdLazy, 97 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 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, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3229 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...