/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-16 01:20:43,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 01:20:43,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 01:20:43,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 01:20:43,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 01:20:43,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 01:20:43,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 01:20:43,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 01:20:43,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 01:20:43,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 01:20:43,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 01:20:43,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 01:20:43,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 01:20:43,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 01:20:43,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 01:20:43,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 01:20:43,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 01:20:43,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 01:20:43,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 01:20:43,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 01:20:43,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 01:20:43,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 01:20:43,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 01:20:43,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 01:20:43,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-16 01:20:43,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 01:20:43,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 01:20:43,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 01:20:43,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 01:20:43,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 01:20:43,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 01:20:43,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 01:20:43,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 01:20:43,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 01:20:43,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 01:20:43,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 01:20:43,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-16 01:20:43,341 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 01:20:43,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 01:20:43,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 01:20:43,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 01:20:43,343 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 01:20:43,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 01:20:43,343 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 01:20:43,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 01:20:43,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 01:20:43,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 01:20:43,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 01:20:43,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 01:20:43,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 01:20:43,345 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 01:20:43,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 01:20:43,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 01:20:43,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 01:20:43,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 01:20:43,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 01:20:43,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 01:20:43,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 01:20:43,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 01:20:43,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 01:20:43,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-16 01:20:43,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 01:20:43,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 01:20:43,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 01:20:43,348 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-16 01:20:43,348 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-16 01:20:43,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 01:20:43,348 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-16 01:20:43,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 01:20:43,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 01:20:43,835 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 01:20:43,840 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 01:20:43,841 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 01:20:43,843 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-09-16 01:20:43,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a55e18dd/58f1f4d08ec14ee090563d97a25fdcaa/FLAG19e78be75 [2020-09-16 01:20:44,680 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 01:20:44,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-09-16 01:20:44,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a55e18dd/58f1f4d08ec14ee090563d97a25fdcaa/FLAG19e78be75 [2020-09-16 01:20:44,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0a55e18dd/58f1f4d08ec14ee090563d97a25fdcaa [2020-09-16 01:20:44,887 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 01:20:44,894 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 01:20:44,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 01:20:44,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 01:20:44,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 01:20:44,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 01:20:44" (1/1) ... [2020-09-16 01:20:44,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59128123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:20:44, skipping insertion in model container [2020-09-16 01:20:44,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 01:20:44" (1/1) ... [2020-09-16 01:20:44,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 01:20:44,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 01:20:45,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 01:20:45,512 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 01:20:45,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 01:20:45,662 INFO L208 MainTranslator]: Completed translation [2020-09-16 01:20:45,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:20:45 WrapperNode [2020-09-16 01:20:45,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 01:20:45,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 01:20:45,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 01:20:45,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 01:20:45,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:20:45" (1/1) ... [2020-09-16 01:20:45,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:20:45" (1/1) ... [2020-09-16 01:20:45,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 01:20:45,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 01:20:45,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 01:20:45,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 01:20:45,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:20:45" (1/1) ... [2020-09-16 01:20:45,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:20:45" (1/1) ... [2020-09-16 01:20:45,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:20:45" (1/1) ... [2020-09-16 01:20:45,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:20:45" (1/1) ... [2020-09-16 01:20:45,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:20:45" (1/1) ... [2020-09-16 01:20:45,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:20:45" (1/1) ... [2020-09-16 01:20:45,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:20:45" (1/1) ... [2020-09-16 01:20:45,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 01:20:45,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 01:20:45,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 01:20:45,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 01:20:45,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:20:45" (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 [2020-09-16 01:20:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 01:20:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 01:20:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 01:20:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 01:20:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 01:20:45,849 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 01:20:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 01:20:45,849 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 01:20:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 01:20:45,850 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 01:20:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-16 01:20:45,850 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-16 01:20:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 01:20:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 01:20:45,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 01:20:45,853 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 01:20:46,345 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 01:20:46,345 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 01:20:46,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 01:20:46 BoogieIcfgContainer [2020-09-16 01:20:46,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 01:20:46,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 01:20:46,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 01:20:46,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 01:20:46,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 01:20:44" (1/3) ... [2020-09-16 01:20:46,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ffa13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 01:20:46, skipping insertion in model container [2020-09-16 01:20:46,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:20:45" (2/3) ... [2020-09-16 01:20:46,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ffa13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 01:20:46, skipping insertion in model container [2020-09-16 01:20:46,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 01:20:46" (3/3) ... [2020-09-16 01:20:46,363 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_tso.oepc.i [2020-09-16 01:20:46,376 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 01:20:46,376 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-16 01:20:46,388 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 01:20:46,389 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 01:20:46,425 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,425 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,425 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,426 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,426 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,426 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,427 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,427 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,427 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,428 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,428 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,428 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,429 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,429 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,430 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,430 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,430 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,430 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,431 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,431 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,432 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,432 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,432 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,433 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,438 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,438 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,438 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,447 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,447 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,447 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,448 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,451 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,452 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,452 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,452 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,455 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,456 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,456 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,456 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:20:46,483 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-16 01:20:46,513 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 01:20:46,514 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 01:20:46,514 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 01:20:46,514 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 01:20:46,514 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 01:20:46,515 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 01:20:46,515 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 01:20:46,515 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 01:20:46,535 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-09-16 01:20:46,537 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-09-16 01:20:46,590 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-09-16 01:20:46,590 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 01:20:46,597 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-09-16 01:20:46,600 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-09-16 01:20:46,626 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-09-16 01:20:46,627 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 01:20:46,628 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-09-16 01:20:46,631 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-09-16 01:20:46,632 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 01:20:48,156 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-16 01:20:48,229 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-09-16 01:20:48,229 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-09-16 01:20:48,234 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-09-16 01:20:48,349 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-09-16 01:20:48,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-09-16 01:20:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 01:20:48,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:20:48,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:20:48,367 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:20:48,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:20:48,375 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-09-16 01:20:48,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:20:48,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781876377] [2020-09-16 01:20:48,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:20:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:20:48,618 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 01:20:48,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781876377] [2020-09-16 01:20:48,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:20:48,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 01:20:48,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [737374548] [2020-09-16 01:20:48,623 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:20:48,627 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:20:48,650 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-09-16 01:20:48,650 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:20:48,654 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:20:48,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-16 01:20:48,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:20:48,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-16 01:20:48,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-16 01:20:48,677 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-09-16 01:20:48,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:20:48,738 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-09-16 01:20:48,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-16 01:20:48,739 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-16 01:20:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:20:48,797 INFO L225 Difference]: With dead ends: 1450 [2020-09-16 01:20:48,798 INFO L226 Difference]: Without dead ends: 1194 [2020-09-16 01:20:48,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-16 01:20:48,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-09-16 01:20:48,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-09-16 01:20:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-09-16 01:20:48,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-09-16 01:20:48,982 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-09-16 01:20:48,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:20:48,984 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-09-16 01:20:48,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-16 01:20:48,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-09-16 01:20:48,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 01:20:48,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:20:48,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:20:48,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 01:20:48,992 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:20:48,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:20:48,993 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-09-16 01:20:48,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:20:48,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981234156] [2020-09-16 01:20:48,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:20:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:20:49,177 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 01:20:49,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981234156] [2020-09-16 01:20:49,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:20:49,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 01:20:49,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [216831568] [2020-09-16 01:20:49,179 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:20:49,180 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:20:49,182 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-09-16 01:20:49,182 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:20:49,183 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:20:49,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:20:49,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:20:49,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:20:49,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:20:49,186 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-09-16 01:20:49,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:20:49,263 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-09-16 01:20:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 01:20:49,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-16 01:20:49,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:20:49,273 INFO L225 Difference]: With dead ends: 1322 [2020-09-16 01:20:49,274 INFO L226 Difference]: Without dead ends: 1066 [2020-09-16 01:20:49,275 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 01:20:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-09-16 01:20:49,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-09-16 01:20:49,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-09-16 01:20:49,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-09-16 01:20:49,359 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-09-16 01:20:49,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:20:49,359 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-09-16 01:20:49,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:20:49,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-09-16 01:20:49,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 01:20:49,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:20:49,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:20:49,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 01:20:49,363 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:20:49,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:20:49,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1585409501, now seen corresponding path program 1 times [2020-09-16 01:20:49,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:20:49,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760926853] [2020-09-16 01:20:49,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:20:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:20:49,478 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 01:20:49,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760926853] [2020-09-16 01:20:49,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:20:49,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 01:20:49,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [750914897] [2020-09-16 01:20:49,479 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:20:49,481 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:20:49,483 INFO L274 McrAutomatonBuilder]: Finished intersection with 16 states and 18 transitions. [2020-09-16 01:20:49,483 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:20:49,518 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:20:49,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:20:49,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:20:49,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:20:49,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:20:49,519 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-09-16 01:20:49,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:20:49,552 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-09-16 01:20:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 01:20:49,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 01:20:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:20:49,561 INFO L225 Difference]: With dead ends: 1162 [2020-09-16 01:20:49,561 INFO L226 Difference]: Without dead ends: 970 [2020-09-16 01:20:49,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 01:20:49,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-09-16 01:20:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-09-16 01:20:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-09-16 01:20:49,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-09-16 01:20:49,600 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-09-16 01:20:49,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:20:49,600 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-09-16 01:20:49,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:20:49,601 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-09-16 01:20:49,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-16 01:20:49,602 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:20:49,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:20:49,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 01:20:49,603 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:20:49,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:20:49,604 INFO L82 PathProgramCache]: Analyzing trace with hash -333650641, now seen corresponding path program 1 times [2020-09-16 01:20:49,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:20:49,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726268861] [2020-09-16 01:20:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:20:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:20:49,693 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 01:20:49,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726268861] [2020-09-16 01:20:49,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:20:49,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:20:49,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [851057180] [2020-09-16 01:20:49,695 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:20:49,696 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:20:49,700 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 44 transitions. [2020-09-16 01:20:49,700 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:20:49,789 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:20:49,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 01:20:49,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:20:49,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 01:20:49,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:20:49,791 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 5 states. [2020-09-16 01:20:49,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:20:49,848 INFO L93 Difference]: Finished difference Result 1210 states and 4120 transitions. [2020-09-16 01:20:49,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 01:20:49,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-16 01:20:49,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:20:49,854 INFO L225 Difference]: With dead ends: 1210 [2020-09-16 01:20:49,855 INFO L226 Difference]: Without dead ends: 586 [2020-09-16 01:20:49,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-16 01:20:49,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-09-16 01:20:49,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2020-09-16 01:20:49,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-09-16 01:20:49,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1872 transitions. [2020-09-16 01:20:49,879 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1872 transitions. Word has length 13 [2020-09-16 01:20:49,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:20:49,879 INFO L479 AbstractCegarLoop]: Abstraction has 586 states and 1872 transitions. [2020-09-16 01:20:49,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 01:20:49,880 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1872 transitions. [2020-09-16 01:20:49,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 01:20:49,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:20:49,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:20:49,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 01:20:49,881 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:20:49,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:20:49,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1296364861, now seen corresponding path program 1 times [2020-09-16 01:20:49,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:20:49,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066921656] [2020-09-16 01:20:49,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:20:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:20:49,989 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 01:20:49,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066921656] [2020-09-16 01:20:49,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:20:49,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:20:49,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [372739873] [2020-09-16 01:20:49,991 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:20:49,993 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:20:50,004 INFO L274 McrAutomatonBuilder]: Finished intersection with 52 states and 100 transitions. [2020-09-16 01:20:50,005 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:20:50,266 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:20:50,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 01:20:50,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:20:50,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 01:20:50,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:20:50,267 INFO L87 Difference]: Start difference. First operand 586 states and 1872 transitions. Second operand 5 states. [2020-09-16 01:20:50,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:20:50,325 INFO L93 Difference]: Finished difference Result 706 states and 2198 transitions. [2020-09-16 01:20:50,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 01:20:50,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-16 01:20:50,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:20:50,328 INFO L225 Difference]: With dead ends: 706 [2020-09-16 01:20:50,328 INFO L226 Difference]: Without dead ends: 304 [2020-09-16 01:20:50,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-16 01:20:50,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-16 01:20:50,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2020-09-16 01:20:50,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-09-16 01:20:50,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 882 transitions. [2020-09-16 01:20:50,340 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 882 transitions. Word has length 15 [2020-09-16 01:20:50,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:20:50,340 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 882 transitions. [2020-09-16 01:20:50,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 01:20:50,341 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 882 transitions. [2020-09-16 01:20:50,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 01:20:50,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:20:50,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:20:50,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 01:20:50,342 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:20:50,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:20:50,343 INFO L82 PathProgramCache]: Analyzing trace with hash -583625760, now seen corresponding path program 1 times [2020-09-16 01:20:50,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:20:50,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919101065] [2020-09-16 01:20:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:20:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:20:50,459 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 01:20:50,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919101065] [2020-09-16 01:20:50,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:20:50,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:20:50,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1155095857] [2020-09-16 01:20:50,460 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:20:50,462 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:20:50,470 INFO L274 McrAutomatonBuilder]: Finished intersection with 52 states and 94 transitions. [2020-09-16 01:20:50,470 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:20:50,574 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:20:50,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 01:20:50,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:20:50,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 01:20:50,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:20:50,576 INFO L87 Difference]: Start difference. First operand 304 states and 882 transitions. Second operand 5 states. [2020-09-16 01:20:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:20:50,617 INFO L93 Difference]: Finished difference Result 388 states and 1110 transitions. [2020-09-16 01:20:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 01:20:50,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-16 01:20:50,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:20:50,619 INFO L225 Difference]: With dead ends: 388 [2020-09-16 01:20:50,619 INFO L226 Difference]: Without dead ends: 148 [2020-09-16 01:20:50,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-16 01:20:50,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-09-16 01:20:50,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-09-16 01:20:50,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-09-16 01:20:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 398 transitions. [2020-09-16 01:20:50,625 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 398 transitions. Word has length 17 [2020-09-16 01:20:50,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:20:50,626 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 398 transitions. [2020-09-16 01:20:50,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 01:20:50,626 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 398 transitions. [2020-09-16 01:20:50,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-16 01:20:50,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:20:50,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:20:50,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 01:20:50,627 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:20:50,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:20:50,628 INFO L82 PathProgramCache]: Analyzing trace with hash 355522076, now seen corresponding path program 1 times [2020-09-16 01:20:50,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:20:50,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126777003] [2020-09-16 01:20:50,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:20:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:20:50,713 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 01:20:50,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126777003] [2020-09-16 01:20:50,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:20:50,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:20:50,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [729015095] [2020-09-16 01:20:50,715 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:20:50,717 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:20:50,722 INFO L274 McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions. [2020-09-16 01:20:50,722 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:20:50,746 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:20:50,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 01:20:50,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:20:50,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 01:20:50,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-16 01:20:50,747 INFO L87 Difference]: Start difference. First operand 148 states and 398 transitions. Second operand 5 states. [2020-09-16 01:20:50,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:20:50,793 INFO L93 Difference]: Finished difference Result 124 states and 322 transitions. [2020-09-16 01:20:50,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 01:20:50,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-16 01:20:50,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:20:50,794 INFO L225 Difference]: With dead ends: 124 [2020-09-16 01:20:50,794 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 01:20:50,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-16 01:20:50,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 01:20:50,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 01:20:50,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 01:20:50,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 01:20:50,796 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-16 01:20:50,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:20:50,796 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 01:20:50,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 01:20:50,796 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 01:20:50,796 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 01:20:50,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 01:20:50,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 01:20:50 BasicIcfg [2020-09-16 01:20:50,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 01:20:50,808 INFO L168 Benchmark]: Toolchain (without parser) took 5917.04 ms. Allocated memory was 138.4 MB in the beginning and 309.9 MB in the end (delta: 171.4 MB). Free memory was 100.2 MB in the beginning and 201.4 MB in the end (delta: -101.2 MB). Peak memory consumption was 70.2 MB. Max. memory is 7.1 GB. [2020-09-16 01:20:50,814 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-16 01:20:50,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 766.01 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.5 MB in the beginning and 159.7 MB in the end (delta: -60.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-09-16 01:20:50,816 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.07 ms. Allocated memory is still 202.4 MB. Free memory was 159.7 MB in the beginning and 157.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-16 01:20:50,817 INFO L168 Benchmark]: Boogie Preprocessor took 34.34 ms. Allocated memory is still 202.4 MB. Free memory was 157.6 MB in the beginning and 156.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-16 01:20:50,818 INFO L168 Benchmark]: RCFGBuilder took 594.08 ms. Allocated memory is still 202.4 MB. Free memory was 156.2 MB in the beginning and 131.3 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-16 01:20:50,821 INFO L168 Benchmark]: TraceAbstraction took 4451.12 ms. Allocated memory was 202.4 MB in the beginning and 309.9 MB in the end (delta: 107.5 MB). Free memory was 130.6 MB in the beginning and 201.4 MB in the end (delta: -70.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2020-09-16 01:20:50,832 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 766.01 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.5 MB in the beginning and 159.7 MB in the end (delta: -60.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.07 ms. Allocated memory is still 202.4 MB. Free memory was 159.7 MB in the beginning and 157.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.34 ms. Allocated memory is still 202.4 MB. Free memory was 157.6 MB in the beginning and 156.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 594.08 ms. Allocated memory is still 202.4 MB. Free memory was 156.2 MB in the beginning and 131.3 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4451.12 ms. Allocated memory was 202.4 MB in the beginning and 309.9 MB in the end (delta: 107.5 MB). Free memory was 130.6 MB in the beginning and 201.4 MB in the end (delta: -70.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 1043 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4485 CheckedPairsTotal, 67 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 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 203 SDtfs, 214 SDslu, 276 SDs, 0 SdLazy, 51 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred 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: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 3479 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...