/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/safe003_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:05:48,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:05:48,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:05:48,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:05:48,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:05:48,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:05:48,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:05:48,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:05:48,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:05:48,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:05:48,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:05:48,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:05:48,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:05:48,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:05:48,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:05:48,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:05:48,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:05:48,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:05:48,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:05:48,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:05:48,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:05:48,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:05:48,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:05:48,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:05:48,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 15:05:48,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 15:05:48,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 15:05:48,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 15:05:48,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 15:05:48,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 15:05:48,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:05:48,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:05:48,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:05:48,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:05:48,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:05:48,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:05:48,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:05:48,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:05:48,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:05:48,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:05:48,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:05:48,365 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-11 15:05:48,408 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:05:48,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:05:48,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:05:48,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:05:48,412 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:05:48,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:05:48,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:05:48,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:05:48,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:05:48,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:05:48,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:05:48,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:05:48,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:05:48,415 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:05:48,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:05:48,415 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:05:48,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:05:48,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:05:48,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:05:48,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:05:48,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:05:48,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:05:48,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:05:48,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:05:48,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:05:48,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:05:48,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:05:48,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:05:48,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:05:48,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:05:48,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:05:48,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:05:48,922 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:05:48,924 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:05:48,924 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:05:48,926 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.oepc.i [2020-09-11 15:05:49,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e2d1907c/c94cbf59231444aca033093e166a611a/FLAGa6e6f421a [2020-09-11 15:05:49,643 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:05:49,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe003_tso.oepc.i [2020-09-11 15:05:49,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e2d1907c/c94cbf59231444aca033093e166a611a/FLAGa6e6f421a [2020-09-11 15:05:49,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e2d1907c/c94cbf59231444aca033093e166a611a [2020-09-11 15:05:49,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:05:49,907 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:05:49,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:05:49,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:05:49,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:05:49,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:05:49" (1/1) ... [2020-09-11 15:05:49,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14382dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:49, skipping insertion in model container [2020-09-11 15:05:49,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:05:49" (1/1) ... [2020-09-11 15:05:49,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:05:49,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:05:50,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:05:50,559 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:05:50,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:05:50,723 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:05:50,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:50 WrapperNode [2020-09-11 15:05:50,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:05:50,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:05:50,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:05:50,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:05:50,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:50" (1/1) ... [2020-09-11 15:05:50,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:50" (1/1) ... [2020-09-11 15:05:50,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:05:50,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:05:50,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:05:50,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:05:50,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:50" (1/1) ... [2020-09-11 15:05:50,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:50" (1/1) ... [2020-09-11 15:05:50,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:50" (1/1) ... [2020-09-11 15:05:50,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:50" (1/1) ... [2020-09-11 15:05:50,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:50" (1/1) ... [2020-09-11 15:05:50,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:50" (1/1) ... [2020-09-11 15:05:50,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:50" (1/1) ... [2020-09-11 15:05:50,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:05:50,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:05:50,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:05:50,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:05:50,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:05:50,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:05:50,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:05:50,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:05:50,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:05:50,933 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:05:50,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:05:50,934 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:05:50,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:05:50,935 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:05:50,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:05:50,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:05:50,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:05:50,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:05:50,938 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 15:05:51,300 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:05:51,301 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:05:51,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:05:51 BoogieIcfgContainer [2020-09-11 15:05:51,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:05:51,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:05:51,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:05:51,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:05:51,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:05:49" (1/3) ... [2020-09-11 15:05:51,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1de9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:05:51, skipping insertion in model container [2020-09-11 15:05:51,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:05:50" (2/3) ... [2020-09-11 15:05:51,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1de9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:05:51, skipping insertion in model container [2020-09-11 15:05:51,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:05:51" (3/3) ... [2020-09-11 15:05:51,317 INFO L109 eAbstractionObserver]: Analyzing ICFG safe003_tso.oepc.i [2020-09-11 15:05:51,329 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:05:51,330 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:05:51,340 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:05:51,341 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:05:51,372 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,372 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,373 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,373 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,374 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,374 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,374 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,375 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,375 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,375 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,376 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,376 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,376 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,377 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,377 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,377 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,377 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,378 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,382 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,383 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,383 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,383 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,395 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,395 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,395 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,396 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,399 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,400 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,400 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,400 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:05:51,427 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 15:05:51,457 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:05:51,457 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:05:51,457 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:05:51,457 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:05:51,457 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:05:51,458 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:05:51,458 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:05:51,458 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:05:51,477 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-11 15:05:51,480 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 15:05:51,532 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 15:05:51,532 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:05:51,539 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 46 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. [2020-09-11 15:05:51,541 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 15:05:51,577 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 15:05:51,581 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:05:51,582 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 46 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. [2020-09-11 15:05:51,587 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 15:05:51,588 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:05:53,182 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-11 15:05:53,394 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-09-11 15:05:53,395 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-11 15:05:53,400 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 15:05:53,429 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 15:05:53,432 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 15:05:53,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 15:05:53,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:05:53,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:05:53,445 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:05:53,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:05:53,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-09-11 15:05:53,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:05:53,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160362797] [2020-09-11 15:05:53,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:05:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:05:53,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:05:53,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160362797] [2020-09-11 15:05:53,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:05:53,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:05:53,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419107960] [2020-09-11 15:05:53,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:05:53,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:05:53,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:05:53,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:05:53,814 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 15:05:53,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:05:53,893 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-09-11 15:05:53,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:05:53,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 15:05:53,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:05:53,924 INFO L225 Difference]: With dead ends: 290 [2020-09-11 15:05:53,925 INFO L226 Difference]: Without dead ends: 226 [2020-09-11 15:05:53,926 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 [2020-09-11 15:05:53,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-11 15:05:53,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-11 15:05:53,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-11 15:05:53,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-09-11 15:05:53,998 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-09-11 15:05:53,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:05:53,999 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-09-11 15:05:54,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:05:54,000 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-09-11 15:05:54,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:05:54,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:05:54,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:05:54,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:05:54,002 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:05:54,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:05:54,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-09-11 15:05:54,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:05:54,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118547521] [2020-09-11 15:05:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:05:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:05:54,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:05:54,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118547521] [2020-09-11 15:05:54,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:05:54,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:05:54,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303862337] [2020-09-11 15:05:54,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:05:54,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:05:54,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:05:54,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:05:54,155 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-09-11 15:05:54,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:05:54,167 INFO L93 Difference]: Finished difference Result 214 states and 585 transitions. [2020-09-11 15:05:54,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:05:54,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-11 15:05:54,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:05:54,170 INFO L225 Difference]: With dead ends: 214 [2020-09-11 15:05:54,170 INFO L226 Difference]: Without dead ends: 214 [2020-09-11 15:05:54,176 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 [2020-09-11 15:05:54,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-11 15:05:54,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-09-11 15:05:54,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-11 15:05:54,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 585 transitions. [2020-09-11 15:05:54,197 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 585 transitions. Word has length 9 [2020-09-11 15:05:54,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:05:54,197 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 585 transitions. [2020-09-11 15:05:54,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:05:54,198 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 585 transitions. [2020-09-11 15:05:54,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 15:05:54,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:05:54,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:05:54,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:05:54,200 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:05:54,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:05:54,200 INFO L82 PathProgramCache]: Analyzing trace with hash -2042509488, now seen corresponding path program 1 times [2020-09-11 15:05:54,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:05:54,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476660640] [2020-09-11 15:05:54,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:05:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:05:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:05:54,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476660640] [2020-09-11 15:05:54,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:05:54,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:05:54,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533380328] [2020-09-11 15:05:54,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:05:54,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:05:54,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:05:54,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:05:54,274 INFO L87 Difference]: Start difference. First operand 214 states and 585 transitions. Second operand 4 states. [2020-09-11 15:05:54,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:05:54,298 INFO L93 Difference]: Finished difference Result 254 states and 660 transitions. [2020-09-11 15:05:54,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:05:54,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-11 15:05:54,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:05:54,301 INFO L225 Difference]: With dead ends: 254 [2020-09-11 15:05:54,301 INFO L226 Difference]: Without dead ends: 134 [2020-09-11 15:05:54,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:05:54,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-11 15:05:54,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-09-11 15:05:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-11 15:05:54,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 326 transitions. [2020-09-11 15:05:54,312 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 326 transitions. Word has length 10 [2020-09-11 15:05:54,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:05:54,313 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 326 transitions. [2020-09-11 15:05:54,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:05:54,313 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 326 transitions. [2020-09-11 15:05:54,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:05:54,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:05:54,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:05:54,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:05:54,315 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:05:54,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:05:54,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1680323254, now seen corresponding path program 1 times [2020-09-11 15:05:54,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:05:54,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647691211] [2020-09-11 15:05:54,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:05:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:05:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:05:54,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647691211] [2020-09-11 15:05:54,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:05:54,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:05:54,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400749973] [2020-09-11 15:05:54,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:05:54,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:05:54,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:05:54,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:05:54,375 INFO L87 Difference]: Start difference. First operand 134 states and 326 transitions. Second operand 3 states. [2020-09-11 15:05:54,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:05:54,389 INFO L93 Difference]: Finished difference Result 128 states and 307 transitions. [2020-09-11 15:05:54,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:05:54,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-11 15:05:54,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:05:54,395 INFO L225 Difference]: With dead ends: 128 [2020-09-11 15:05:54,395 INFO L226 Difference]: Without dead ends: 128 [2020-09-11 15:05:54,396 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 [2020-09-11 15:05:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-11 15:05:54,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-09-11 15:05:54,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-11 15:05:54,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 307 transitions. [2020-09-11 15:05:54,411 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 307 transitions. Word has length 11 [2020-09-11 15:05:54,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:05:54,412 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 307 transitions. [2020-09-11 15:05:54,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:05:54,412 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 307 transitions. [2020-09-11 15:05:54,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:05:54,420 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:05:54,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:05:54,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:05:54,421 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:05:54,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:05:54,421 INFO L82 PathProgramCache]: Analyzing trace with hash 550400496, now seen corresponding path program 1 times [2020-09-11 15:05:54,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:05:54,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101153944] [2020-09-11 15:05:54,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:05:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:05:54,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:05:54,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101153944] [2020-09-11 15:05:54,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:05:54,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:05:54,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733410198] [2020-09-11 15:05:54,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:05:54,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:05:54,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:05:54,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:05:54,519 INFO L87 Difference]: Start difference. First operand 128 states and 307 transitions. Second operand 3 states. [2020-09-11 15:05:54,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:05:54,529 INFO L93 Difference]: Finished difference Result 122 states and 288 transitions. [2020-09-11 15:05:54,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:05:54,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-11 15:05:54,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:05:54,533 INFO L225 Difference]: With dead ends: 122 [2020-09-11 15:05:54,533 INFO L226 Difference]: Without dead ends: 122 [2020-09-11 15:05:54,533 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 [2020-09-11 15:05:54,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-11 15:05:54,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-09-11 15:05:54,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-11 15:05:54,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 288 transitions. [2020-09-11 15:05:54,549 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 288 transitions. Word has length 12 [2020-09-11 15:05:54,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:05:54,549 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 288 transitions. [2020-09-11 15:05:54,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:05:54,552 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 288 transitions. [2020-09-11 15:05:54,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:05:54,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:05:54,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:05:54,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:05:54,554 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:05:54,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:05:54,554 INFO L82 PathProgramCache]: Analyzing trace with hash -117499308, now seen corresponding path program 1 times [2020-09-11 15:05:54,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:05:54,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68713328] [2020-09-11 15:05:54,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:05:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:05:54,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:05:54,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68713328] [2020-09-11 15:05:54,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:05:54,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:05:54,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805672354] [2020-09-11 15:05:54,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:05:54,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:05:54,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:05:54,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:05:54,642 INFO L87 Difference]: Start difference. First operand 122 states and 288 transitions. Second operand 4 states. [2020-09-11 15:05:54,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:05:54,682 INFO L93 Difference]: Finished difference Result 184 states and 429 transitions. [2020-09-11 15:05:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:05:54,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 15:05:54,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:05:54,684 INFO L225 Difference]: With dead ends: 184 [2020-09-11 15:05:54,685 INFO L226 Difference]: Without dead ends: 130 [2020-09-11 15:05:54,685 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 [2020-09-11 15:05:54,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-11 15:05:54,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 122. [2020-09-11 15:05:54,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-11 15:05:54,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 278 transitions. [2020-09-11 15:05:54,699 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 278 transitions. Word has length 13 [2020-09-11 15:05:54,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:05:54,699 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 278 transitions. [2020-09-11 15:05:54,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:05:54,700 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 278 transitions. [2020-09-11 15:05:54,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:05:54,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:05:54,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:05:54,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:05:54,703 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:05:54,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:05:54,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1997055762, now seen corresponding path program 2 times [2020-09-11 15:05:54,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:05:54,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257405222] [2020-09-11 15:05:54,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:05:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:05:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:05:54,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257405222] [2020-09-11 15:05:54,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:05:54,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:05:54,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448011613] [2020-09-11 15:05:54,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:05:54,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:05:54,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:05:54,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:05:54,808 INFO L87 Difference]: Start difference. First operand 122 states and 278 transitions. Second operand 4 states. [2020-09-11 15:05:54,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:05:54,837 INFO L93 Difference]: Finished difference Result 142 states and 318 transitions. [2020-09-11 15:05:54,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:05:54,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 15:05:54,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:05:54,839 INFO L225 Difference]: With dead ends: 142 [2020-09-11 15:05:54,839 INFO L226 Difference]: Without dead ends: 82 [2020-09-11 15:05:54,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:05:54,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-11 15:05:54,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-09-11 15:05:54,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-11 15:05:54,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 174 transitions. [2020-09-11 15:05:54,844 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 174 transitions. Word has length 13 [2020-09-11 15:05:54,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:05:54,844 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 174 transitions. [2020-09-11 15:05:54,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:05:54,845 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 174 transitions. [2020-09-11 15:05:54,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:05:54,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:05:54,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:05:54,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:05:54,846 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:05:54,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:05:54,846 INFO L82 PathProgramCache]: Analyzing trace with hash 616515302, now seen corresponding path program 1 times [2020-09-11 15:05:54,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:05:54,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917038437] [2020-09-11 15:05:54,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:05:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:05:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:05:54,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917038437] [2020-09-11 15:05:54,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:05:54,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:05:54,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261057470] [2020-09-11 15:05:54,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:05:54,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:05:54,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:05:54,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:05:54,904 INFO L87 Difference]: Start difference. First operand 82 states and 174 transitions. Second operand 3 states. [2020-09-11 15:05:54,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:05:54,912 INFO L93 Difference]: Finished difference Result 74 states and 154 transitions. [2020-09-11 15:05:54,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:05:54,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-11 15:05:54,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:05:54,913 INFO L225 Difference]: With dead ends: 74 [2020-09-11 15:05:54,914 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:05:54,914 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 [2020-09-11 15:05:54,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:05:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:05:54,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:05:54,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:05:54,915 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-09-11 15:05:54,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:05:54,915 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:05:54,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:05:54,916 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:05:54,916 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:05:54,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:05:54,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:05:54 BasicIcfg [2020-09-11 15:05:54,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:05:54,924 INFO L168 Benchmark]: Toolchain (without parser) took 5019.59 ms. Allocated memory was 143.1 MB in the beginning and 245.9 MB in the end (delta: 102.8 MB). Free memory was 104.7 MB in the beginning and 142.4 MB in the end (delta: -37.7 MB). Peak memory consumption was 65.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:05:54,924 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:05:54,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 816.83 ms. Allocated memory was 143.1 MB in the beginning and 205.5 MB in the end (delta: 62.4 MB). Free memory was 104.0 MB in the beginning and 163.2 MB in the end (delta: -59.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:05:54,926 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.21 ms. Allocated memory is still 205.5 MB. Free memory was 163.2 MB in the beginning and 161.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:05:54,927 INFO L168 Benchmark]: Boogie Preprocessor took 35.55 ms. Allocated memory is still 205.5 MB. Free memory was 161.2 MB in the beginning and 159.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-11 15:05:54,928 INFO L168 Benchmark]: RCFGBuilder took 448.84 ms. Allocated memory is still 205.5 MB. Free memory was 159.3 MB in the beginning and 137.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:05:54,929 INFO L168 Benchmark]: TraceAbstraction took 3612.98 ms. Allocated memory was 205.5 MB in the beginning and 245.9 MB in the end (delta: 40.4 MB). Free memory was 136.4 MB in the beginning and 142.4 MB in the end (delta: -6.0 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:05:54,933 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 816.83 ms. Allocated memory was 143.1 MB in the beginning and 205.5 MB in the end (delta: 62.4 MB). Free memory was 104.0 MB in the beginning and 163.2 MB in the end (delta: -59.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 96.21 ms. Allocated memory is still 205.5 MB. Free memory was 163.2 MB in the beginning and 161.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.55 ms. Allocated memory is still 205.5 MB. Free memory was 161.2 MB in the beginning and 159.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 448.84 ms. Allocated memory is still 205.5 MB. Free memory was 159.3 MB in the beginning and 137.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3612.98 ms. Allocated memory was 205.5 MB in the beginning and 245.9 MB in the end (delta: 40.4 MB). Free memory was 136.4 MB in the beginning and 142.4 MB in the end (delta: -6.0 MB). Peak memory consumption was 34.4 MB. 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, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 667 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 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: 3.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 144 SDtfs, 81 SDslu, 119 SDs, 0 SdLazy, 46 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 2334 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...