/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/safe010_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-16 23:39:08,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 23:39:08,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 23:39:08,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 23:39:08,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 23:39:08,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 23:39:08,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 23:39:08,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 23:39:08,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 23:39:08,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 23:39:08,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 23:39:08,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 23:39:08,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 23:39:08,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 23:39:08,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 23:39:08,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 23:39:08,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 23:39:08,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 23:39:08,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 23:39:08,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 23:39:08,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 23:39:08,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 23:39:08,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 23:39:08,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 23:39:08,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-16 23:39:08,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-16 23:39:08,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-16 23:39:08,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-16 23:39:08,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-16 23:39:08,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-16 23:39:08,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 23:39:08,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 23:39:08,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 23:39:08,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 23:39:08,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 23:39:08,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 23:39:08,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 23:39:08,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 23:39:08,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 23:39:08,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 23:39:08,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 23:39:08,246 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 23:39:08,297 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 23:39:08,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 23:39:08,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 23:39:08,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 23:39:08,300 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 23:39:08,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 23:39:08,301 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 23:39:08,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 23:39:08,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 23:39:08,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 23:39:08,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 23:39:08,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 23:39:08,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 23:39:08,304 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 23:39:08,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 23:39:08,304 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 23:39:08,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 23:39:08,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 23:39:08,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 23:39:08,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 23:39:08,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 23:39:08,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 23:39:08,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 23:39:08,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-16 23:39:08,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 23:39:08,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 23:39:08,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 23:39:08,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 23:39:08,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-16 23:39:08,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-16 23:39:08,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 23:39:08,757 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 23:39:08,761 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 23:39:08,763 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 23:39:08,763 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 23:39:08,764 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.oepc.i [2020-09-16 23:39:08,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa76c5097/f5a1eafa6dd44c44b48e10a9ca79a87a/FLAG42765df79 [2020-09-16 23:39:09,547 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 23:39:09,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.oepc.i [2020-09-16 23:39:09,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa76c5097/f5a1eafa6dd44c44b48e10a9ca79a87a/FLAG42765df79 [2020-09-16 23:39:09,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa76c5097/f5a1eafa6dd44c44b48e10a9ca79a87a [2020-09-16 23:39:09,733 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 23:39:09,742 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 23:39:09,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 23:39:09,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 23:39:09,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 23:39:09,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:39:09" (1/1) ... [2020-09-16 23:39:09,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd2411b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:09, skipping insertion in model container [2020-09-16 23:39:09,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:39:09" (1/1) ... [2020-09-16 23:39:09,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 23:39:09,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 23:39:10,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:39:10,393 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 23:39:10,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:39:10,539 INFO L208 MainTranslator]: Completed translation [2020-09-16 23:39:10,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:10 WrapperNode [2020-09-16 23:39:10,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 23:39:10,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 23:39:10,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 23:39:10,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 23:39:10,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:10" (1/1) ... [2020-09-16 23:39:10,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:10" (1/1) ... [2020-09-16 23:39:10,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 23:39:10,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 23:39:10,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 23:39:10,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 23:39:10,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:10" (1/1) ... [2020-09-16 23:39:10,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:10" (1/1) ... [2020-09-16 23:39:10,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:10" (1/1) ... [2020-09-16 23:39:10,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:10" (1/1) ... [2020-09-16 23:39:10,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:10" (1/1) ... [2020-09-16 23:39:10,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:10" (1/1) ... [2020-09-16 23:39:10,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:10" (1/1) ... [2020-09-16 23:39:10,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 23:39:10,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 23:39:10,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 23:39:10,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 23:39:10,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:10" (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 23:39:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 23:39:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 23:39:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 23:39:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 23:39:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 23:39:10,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 23:39:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 23:39:10,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 23:39:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 23:39:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 23:39:10,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 23:39:10,718 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 23:39:11,095 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 23:39:11,096 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 23:39:11,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:39:11 BoogieIcfgContainer [2020-09-16 23:39:11,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 23:39:11,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 23:39:11,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 23:39:11,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 23:39:11,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:39:09" (1/3) ... [2020-09-16 23:39:11,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57bea24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:39:11, skipping insertion in model container [2020-09-16 23:39:11,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:10" (2/3) ... [2020-09-16 23:39:11,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57bea24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:39:11, skipping insertion in model container [2020-09-16 23:39:11,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:39:11" (3/3) ... [2020-09-16 23:39:11,111 INFO L109 eAbstractionObserver]: Analyzing ICFG safe010_tso.oepc.i [2020-09-16 23:39:11,123 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 23:39:11,123 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-16 23:39:11,131 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 23:39:11,132 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 23:39:11,159 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,159 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,159 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,159 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,160 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,160 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,161 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,161 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,161 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,161 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,162 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,162 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,166 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,166 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,166 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,167 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,172 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,173 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,173 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,174 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:39:11,203 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-16 23:39:11,232 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 23:39:11,232 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 23:39:11,233 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 23:39:11,233 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 23:39:11,233 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 23:39:11,233 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 23:39:11,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 23:39:11,233 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 23:39:11,255 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 55 transitions, 120 flow [2020-09-16 23:39:11,257 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-09-16 23:39:11,307 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-09-16 23:39:11,307 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:39:11,313 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-16 23:39:11,315 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-09-16 23:39:11,335 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-09-16 23:39:11,336 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:39:11,337 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-09-16 23:39:11,339 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-09-16 23:39:11,340 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 23:39:12,809 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1251 [2020-09-16 23:39:12,809 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-09-16 23:39:12,814 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-09-16 23:39:12,829 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-09-16 23:39:12,832 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-16 23:39:12,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-16 23:39:12,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:39:12,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-09-16 23:39:12,842 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:39:12,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:39:12,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1814584925, now seen corresponding path program 1 times [2020-09-16 23:39:12,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:39:12,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262548601] [2020-09-16 23:39:12,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:39:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:39:13,103 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 23:39:13,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262548601] [2020-09-16 23:39:13,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:39:13,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 23:39:13,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094520186] [2020-09-16 23:39:13,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:39:13,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:39:13,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:39:13,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:39:13,131 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-09-16 23:39:13,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:39:13,167 INFO L93 Difference]: Finished difference Result 70 states and 149 transitions. [2020-09-16 23:39:13,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:39:13,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-09-16 23:39:13,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:39:13,183 INFO L225 Difference]: With dead ends: 70 [2020-09-16 23:39:13,183 INFO L226 Difference]: Without dead ends: 54 [2020-09-16 23:39:13,185 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 23:39:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-16 23:39:13,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-16 23:39:13,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-16 23:39:13,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2020-09-16 23:39:13,235 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 6 [2020-09-16 23:39:13,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:39:13,235 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2020-09-16 23:39:13,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:39:13,235 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2020-09-16 23:39:13,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-16 23:39:13,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:39:13,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:39:13,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 23:39:13,237 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:39:13,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:39:13,237 INFO L82 PathProgramCache]: Analyzing trace with hash 417538412, now seen corresponding path program 1 times [2020-09-16 23:39:13,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:39:13,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491854310] [2020-09-16 23:39:13,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:39:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:39:13,360 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 23:39:13,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491854310] [2020-09-16 23:39:13,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:39:13,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 23:39:13,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310584790] [2020-09-16 23:39:13,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:39:13,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:39:13,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:39:13,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:39:13,364 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand 3 states. [2020-09-16 23:39:13,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:39:13,374 INFO L93 Difference]: Finished difference Result 53 states and 106 transitions. [2020-09-16 23:39:13,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:39:13,375 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-09-16 23:39:13,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:39:13,376 INFO L225 Difference]: With dead ends: 53 [2020-09-16 23:39:13,376 INFO L226 Difference]: Without dead ends: 53 [2020-09-16 23:39:13,377 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 23:39:13,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-16 23:39:13,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-16 23:39:13,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-16 23:39:13,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 106 transitions. [2020-09-16 23:39:13,386 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 106 transitions. Word has length 7 [2020-09-16 23:39:13,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:39:13,387 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 106 transitions. [2020-09-16 23:39:13,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:39:13,387 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 106 transitions. [2020-09-16 23:39:13,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 23:39:13,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:39:13,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:39:13,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 23:39:13,388 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:39:13,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:39:13,389 INFO L82 PathProgramCache]: Analyzing trace with hash 58787852, now seen corresponding path program 1 times [2020-09-16 23:39:13,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:39:13,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47355291] [2020-09-16 23:39:13,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:39:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:39:13,454 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 23:39:13,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47355291] [2020-09-16 23:39:13,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:39:13,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:39:13,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105608407] [2020-09-16 23:39:13,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:39:13,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:39:13,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:39:13,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:39:13,457 INFO L87 Difference]: Start difference. First operand 53 states and 106 transitions. Second operand 4 states. [2020-09-16 23:39:13,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:39:13,481 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2020-09-16 23:39:13,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 23:39:13,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-16 23:39:13,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:39:13,483 INFO L225 Difference]: With dead ends: 60 [2020-09-16 23:39:13,483 INFO L226 Difference]: Without dead ends: 36 [2020-09-16 23:39:13,483 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 23:39:13,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-16 23:39:13,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-16 23:39:13,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-16 23:39:13,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-09-16 23:39:13,489 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 8 [2020-09-16 23:39:13,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:39:13,489 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-09-16 23:39:13,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:39:13,489 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-09-16 23:39:13,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 23:39:13,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:39:13,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:39:13,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 23:39:13,491 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:39:13,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:39:13,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1840071362, now seen corresponding path program 1 times [2020-09-16 23:39:13,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:39:13,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273140117] [2020-09-16 23:39:13,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:39:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:39:13,619 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 23:39:13,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273140117] [2020-09-16 23:39:13,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:39:13,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:39:13,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092830703] [2020-09-16 23:39:13,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:39:13,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:39:13,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:39:13,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:39:13,623 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 4 states. [2020-09-16 23:39:13,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:39:13,656 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-09-16 23:39:13,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 23:39:13,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-16 23:39:13,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:39:13,658 INFO L225 Difference]: With dead ends: 39 [2020-09-16 23:39:13,658 INFO L226 Difference]: Without dead ends: 29 [2020-09-16 23:39:13,659 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 23:39:13,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-16 23:39:13,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-16 23:39:13,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-16 23:39:13,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 44 transitions. [2020-09-16 23:39:13,663 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 44 transitions. Word has length 9 [2020-09-16 23:39:13,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:39:13,663 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 44 transitions. [2020-09-16 23:39:13,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:39:13,663 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2020-09-16 23:39:13,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 23:39:13,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:39:13,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:39:13,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 23:39:13,665 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:39:13,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:39:13,665 INFO L82 PathProgramCache]: Analyzing trace with hash 419248155, now seen corresponding path program 1 times [2020-09-16 23:39:13,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:39:13,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066472303] [2020-09-16 23:39:13,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:39:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:39:13,729 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 23:39:13,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066472303] [2020-09-16 23:39:13,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:39:13,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:39:13,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019927114] [2020-09-16 23:39:13,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 23:39:13,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:39:13,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 23:39:13,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:39:13,732 INFO L87 Difference]: Start difference. First operand 29 states and 44 transitions. Second operand 5 states. [2020-09-16 23:39:13,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:39:13,767 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2020-09-16 23:39:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 23:39:13,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-16 23:39:13,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:39:13,768 INFO L225 Difference]: With dead ends: 27 [2020-09-16 23:39:13,768 INFO L226 Difference]: Without dead ends: 22 [2020-09-16 23:39:13,769 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 23:39:13,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-16 23:39:13,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-16 23:39:13,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-16 23:39:13,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-09-16 23:39:13,772 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 10 [2020-09-16 23:39:13,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:39:13,772 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-09-16 23:39:13,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 23:39:13,773 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-09-16 23:39:13,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 23:39:13,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:39:13,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:39:13,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 23:39:13,774 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:39:13,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:39:13,774 INFO L82 PathProgramCache]: Analyzing trace with hash -830614075, now seen corresponding path program 1 times [2020-09-16 23:39:13,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:39:13,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988411893] [2020-09-16 23:39:13,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:39:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:39:13,814 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 23:39:13,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988411893] [2020-09-16 23:39:13,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:39:13,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:39:13,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822916384] [2020-09-16 23:39:13,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:39:13,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:39:13,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:39:13,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:39:13,816 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 3 states. [2020-09-16 23:39:13,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:39:13,821 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-09-16 23:39:13,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:39:13,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-16 23:39:13,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:39:13,822 INFO L225 Difference]: With dead ends: 21 [2020-09-16 23:39:13,822 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 23:39:13,823 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 23:39:13,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 23:39:13,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 23:39:13,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 23:39:13,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 23:39:13,824 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-09-16 23:39:13,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:39:13,824 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 23:39:13,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:39:13,824 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 23:39:13,824 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 23:39:13,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 23:39:13,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:39:13 BasicIcfg [2020-09-16 23:39:13,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 23:39:13,833 INFO L168 Benchmark]: Toolchain (without parser) took 4096.71 ms. Allocated memory was 148.4 MB in the beginning and 244.8 MB in the end (delta: 96.5 MB). Free memory was 101.9 MB in the beginning and 127.0 MB in the end (delta: -25.2 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. [2020-09-16 23:39:13,834 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-16 23:39:13,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 793.84 ms. Allocated memory was 148.4 MB in the beginning and 206.0 MB in the end (delta: 57.7 MB). Free memory was 101.2 MB in the beginning and 163.3 MB in the end (delta: -62.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-09-16 23:39:13,836 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.52 ms. Allocated memory is still 206.0 MB. Free memory was 163.3 MB in the beginning and 161.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-16 23:39:13,837 INFO L168 Benchmark]: Boogie Preprocessor took 31.02 ms. Allocated memory is still 206.0 MB. Free memory was 161.4 MB in the beginning and 160.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-16 23:39:13,837 INFO L168 Benchmark]: RCFGBuilder took 474.90 ms. Allocated memory is still 206.0 MB. Free memory was 160.1 MB in the beginning and 140.3 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-09-16 23:39:13,838 INFO L168 Benchmark]: TraceAbstraction took 2726.97 ms. Allocated memory was 206.0 MB in the beginning and 244.8 MB in the end (delta: 38.8 MB). Free memory was 139.7 MB in the beginning and 127.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. [2020-09-16 23:39:13,843 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 793.84 ms. Allocated memory was 148.4 MB in the beginning and 206.0 MB in the end (delta: 57.7 MB). Free memory was 101.2 MB in the beginning and 163.3 MB in the end (delta: -62.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.52 ms. Allocated memory is still 206.0 MB. Free memory was 163.3 MB in the beginning and 161.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.02 ms. Allocated memory is still 206.0 MB. Free memory was 161.4 MB in the beginning and 160.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 474.90 ms. Allocated memory is still 206.0 MB. Free memory was 160.1 MB in the beginning and 140.3 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2726.97 ms. Allocated memory was 206.0 MB in the beginning and 244.8 MB in the end (delta: 38.8 MB). Free memory was 139.7 MB in the beginning and 127.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 60 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 12 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 372 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1251 CheckedPairsTotal, 49 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 3 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 71 SDtfs, 42 SDslu, 61 SDs, 0 SdLazy, 47 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 1116 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...