/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/safe035_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:53:49,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:53:49,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:53:49,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:53:49,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:53:49,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:53:49,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:53:49,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:53:49,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:53:49,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:53:49,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:53:49,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:53:49,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:53:49,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:53:49,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:53:49,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:53:49,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:53:49,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:53:49,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:53:49,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:53:49,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:53:49,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:53:49,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:53:49,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:53:49,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 15:53:49,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 15:53:49,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 15:53:49,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 15:53:49,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 15:53:49,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 15:53:49,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:53:49,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:53:49,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:53:49,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:53:49,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:53:49,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:53:49,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:53:49,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:53:49,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:53:49,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:53:49,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:53:49,368 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 15:53:49,398 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:53:49,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:53:49,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:53:49,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:53:49,400 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:53:49,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:53:49,401 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:53:49,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:53:49,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:53:49,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:53:49,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:53:49,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:53:49,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:53:49,402 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:53:49,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:53:49,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:53:49,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:53:49,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:53:49,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:53:49,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:53:49,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:53:49,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:53:49,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:53:49,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:53:49,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:53:49,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:53:49,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:53:49,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:53:49,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:53:49,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:53:49,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:53:49,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:53:49,865 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:53:49,867 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:53:49,867 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:53:49,868 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i [2020-09-11 15:53:49,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a2676048/2e203e400e4a4d8d96dceae550cc016e/FLAG942375218 [2020-09-11 15:53:50,613 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:53:50,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i [2020-09-11 15:53:50,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a2676048/2e203e400e4a4d8d96dceae550cc016e/FLAG942375218 [2020-09-11 15:53:50,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a2676048/2e203e400e4a4d8d96dceae550cc016e [2020-09-11 15:53:50,869 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:53:50,875 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:53:50,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:53:50,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:53:50,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:53:50,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:53:50" (1/1) ... [2020-09-11 15:53:50,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52250798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:53:50, skipping insertion in model container [2020-09-11 15:53:50,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:53:50" (1/1) ... [2020-09-11 15:53:50,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:53:50,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:53:51,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:53:51,501 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:53:51,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:53:51,645 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:53:51,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:53:51 WrapperNode [2020-09-11 15:53:51,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:53:51,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:53:51,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:53:51,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:53:51,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:53:51" (1/1) ... [2020-09-11 15:53:51,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:53:51" (1/1) ... [2020-09-11 15:53:51,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:53:51,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:53:51,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:53:51,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:53:51,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:53:51" (1/1) ... [2020-09-11 15:53:51,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:53:51" (1/1) ... [2020-09-11 15:53:51,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:53:51" (1/1) ... [2020-09-11 15:53:51,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:53:51" (1/1) ... [2020-09-11 15:53:51,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:53:51" (1/1) ... [2020-09-11 15:53:51,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:53:51" (1/1) ... [2020-09-11 15:53:51,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:53:51" (1/1) ... [2020-09-11 15:53:51,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:53:51,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:53:51,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:53:51,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:53:51,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:53:51" (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 15:53:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:53:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:53:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:53:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:53:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:53:51,822 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:53:51,822 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:53:51,822 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:53:51,822 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:53:51,822 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:53:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:53:51,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:53:51,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:53:51,825 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 15:53:52,267 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:53:52,267 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:53:52,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:53:52 BoogieIcfgContainer [2020-09-11 15:53:52,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:53:52,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:53:52,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:53:52,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:53:52,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:53:50" (1/3) ... [2020-09-11 15:53:52,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fee674d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:53:52, skipping insertion in model container [2020-09-11 15:53:52,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:53:51" (2/3) ... [2020-09-11 15:53:52,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fee674d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:53:52, skipping insertion in model container [2020-09-11 15:53:52,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:53:52" (3/3) ... [2020-09-11 15:53:52,284 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_rmo.oepc.i [2020-09-11 15:53:52,295 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:53:52,296 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:53:52,306 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:53:52,307 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:53:52,338 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,338 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,338 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,339 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,340 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,340 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,340 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,341 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,342 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,342 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,342 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,342 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,349 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,349 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,359 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,359 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,359 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,360 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,363 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,364 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,364 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,364 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:53:52,389 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 15:53:52,415 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:53:52,416 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:53:52,416 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:53:52,416 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:53:52,416 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:53:52,416 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:53:52,417 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:53:52,417 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:53:52,438 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-11 15:53:52,441 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 15:53:52,494 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 15:53:52,494 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:53:52,503 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 49 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 15:53:52,508 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 15:53:52,554 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 15:53:52,555 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:53:52,555 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 49 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 15:53:52,557 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 15:53:52,560 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:53:54,413 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-09-11 15:53:54,414 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-11 15:53:54,419 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-11 15:53:54,448 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 15:53:54,451 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 15:53:54,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 15:53:54,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:53:54,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:53:54,463 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:53:54,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:53:54,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-09-11 15:53:54,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:53:54,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580937338] [2020-09-11 15:53:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:53:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:53:54,752 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 15:53:54,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580937338] [2020-09-11 15:53:54,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:53:54,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:53:54,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485622870] [2020-09-11 15:53:54,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:53:54,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:53:54,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:53:54,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:53:54,786 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 15:53:54,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:53:54,843 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-09-11 15:53:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:53:54,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 15:53:54,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:53:54,869 INFO L225 Difference]: With dead ends: 266 [2020-09-11 15:53:54,869 INFO L226 Difference]: Without dead ends: 202 [2020-09-11 15:53:54,871 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 15:53:54,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-11 15:53:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-11 15:53:54,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-11 15:53:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-11 15:53:54,953 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-09-11 15:53:54,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:53:54,955 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-11 15:53:54,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:53:54,955 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-11 15:53:54,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 15:53:54,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:53:54,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:53:54,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:53:54,958 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:53:54,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:53:54,958 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-09-11 15:53:54,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:53:54,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493352154] [2020-09-11 15:53:54,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:53:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:53:55,049 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 15:53:55,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493352154] [2020-09-11 15:53:55,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:53:55,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:53:55,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762550920] [2020-09-11 15:53:55,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:53:55,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:53:55,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:53:55,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:53:55,055 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-11 15:53:55,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:53:55,094 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-09-11 15:53:55,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:53:55,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-11 15:53:55,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:53:55,097 INFO L225 Difference]: With dead ends: 266 [2020-09-11 15:53:55,097 INFO L226 Difference]: Without dead ends: 140 [2020-09-11 15:53:55,098 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 15:53:55,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-11 15:53:55,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-09-11 15:53:55,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-11 15:53:55,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-09-11 15:53:55,112 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-09-11 15:53:55,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:53:55,112 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-09-11 15:53:55,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:53:55,113 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-09-11 15:53:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:53:55,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:53:55,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:53:55,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:53:55,114 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:53:55,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:53:55,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-09-11 15:53:55,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:53:55,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48388522] [2020-09-11 15:53:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:53:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:53:55,245 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 15:53:55,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48388522] [2020-09-11 15:53:55,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:53:55,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:53:55,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079845912] [2020-09-11 15:53:55,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:53:55,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:53:55,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:53:55,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:53:55,247 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-09-11 15:53:55,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:53:55,299 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-09-11 15:53:55,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:53:55,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-11 15:53:55,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:53:55,304 INFO L225 Difference]: With dead ends: 165 [2020-09-11 15:53:55,304 INFO L226 Difference]: Without dead ends: 113 [2020-09-11 15:53:55,304 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 15:53:55,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-11 15:53:55,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-09-11 15:53:55,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-11 15:53:55,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-09-11 15:53:55,314 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-09-11 15:53:55,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:53:55,314 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-09-11 15:53:55,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:53:55,315 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-09-11 15:53:55,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:53:55,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:53:55,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:53:55,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:53:55,335 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:53:55,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:53:55,336 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-09-11 15:53:55,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:53:55,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581118518] [2020-09-11 15:53:55,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:53:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:53:55,466 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 15:53:55,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581118518] [2020-09-11 15:53:55,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:53:55,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:53:55,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829238660] [2020-09-11 15:53:55,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:53:55,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:53:55,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:53:55,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:53:55,470 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 5 states. [2020-09-11 15:53:55,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:53:55,537 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-09-11 15:53:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:53:55,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-11 15:53:55,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:53:55,542 INFO L225 Difference]: With dead ends: 111 [2020-09-11 15:53:55,542 INFO L226 Difference]: Without dead ends: 80 [2020-09-11 15:53:55,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:53:55,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-11 15:53:55,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-11 15:53:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-11 15:53:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-09-11 15:53:55,551 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-09-11 15:53:55,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:53:55,551 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-09-11 15:53:55,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:53:55,552 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-09-11 15:53:55,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:53:55,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:53:55,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:53:55,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:53:55,553 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:53:55,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:53:55,554 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-09-11 15:53:55,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:53:55,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816056422] [2020-09-11 15:53:55,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:53:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:53:55,721 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 15:53:55,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816056422] [2020-09-11 15:53:55,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:53:55,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:53:55,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072930811] [2020-09-11 15:53:55,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:53:55,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:53:55,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:53:55,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:53:55,724 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 6 states. [2020-09-11 15:53:55,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:53:55,782 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-09-11 15:53:55,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:53:55,783 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-11 15:53:55,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:53:55,783 INFO L225 Difference]: With dead ends: 75 [2020-09-11 15:53:55,784 INFO L226 Difference]: Without dead ends: 66 [2020-09-11 15:53:55,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:53:55,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-11 15:53:55,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-11 15:53:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-11 15:53:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-09-11 15:53:55,789 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-09-11 15:53:55,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:53:55,789 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-09-11 15:53:55,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:53:55,790 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-09-11 15:53:55,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 15:53:55,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:53:55,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:53:55,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:53:55,791 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:53:55,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:53:55,792 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-09-11 15:53:55,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:53:55,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882472909] [2020-09-11 15:53:55,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:53:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:53:55,874 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 15:53:55,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882472909] [2020-09-11 15:53:55,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:53:55,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:53:55,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786341135] [2020-09-11 15:53:55,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:53:55,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:53:55,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:53:55,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:53:55,878 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-09-11 15:53:55,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:53:55,911 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-09-11 15:53:55,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:53:55,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 15:53:55,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:53:55,912 INFO L225 Difference]: With dead ends: 85 [2020-09-11 15:53:55,912 INFO L226 Difference]: Without dead ends: 48 [2020-09-11 15:53:55,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:53:55,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-11 15:53:55,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-11 15:53:55,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-11 15:53:55,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-09-11 15:53:55,917 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-09-11 15:53:55,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:53:55,918 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-09-11 15:53:55,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:53:55,918 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-09-11 15:53:55,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 15:53:55,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:53:55,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:53:55,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:53:55,919 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:53:55,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:53:55,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-09-11 15:53:55,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:53:55,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964975601] [2020-09-11 15:53:55,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:53:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:53:55,975 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 15:53:55,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964975601] [2020-09-11 15:53:55,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:53:55,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:53:55,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91020331] [2020-09-11 15:53:55,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:53:55,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:53:55,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:53:55,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:53:55,978 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-09-11 15:53:56,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:53:56,005 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-09-11 15:53:56,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:53:56,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 15:53:56,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:53:56,007 INFO L225 Difference]: With dead ends: 73 [2020-09-11 15:53:56,007 INFO L226 Difference]: Without dead ends: 42 [2020-09-11 15:53:56,007 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 15:53:56,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-11 15:53:56,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-11 15:53:56,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-11 15:53:56,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-09-11 15:53:56,010 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-09-11 15:53:56,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:53:56,011 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-09-11 15:53:56,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:53:56,011 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-09-11 15:53:56,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 15:53:56,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:53:56,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:53:56,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:53:56,012 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:53:56,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:53:56,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-09-11 15:53:56,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:53:56,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321775051] [2020-09-11 15:53:56,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:53:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:53:56,069 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 15:53:56,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321775051] [2020-09-11 15:53:56,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:53:56,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:53:56,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419675393] [2020-09-11 15:53:56,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:53:56,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:53:56,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:53:56,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:53:56,072 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-09-11 15:53:56,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:53:56,085 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-09-11 15:53:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:53:56,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 15:53:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:53:56,086 INFO L225 Difference]: With dead ends: 41 [2020-09-11 15:53:56,086 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:53:56,086 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 15:53:56,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:53:56,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:53:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:53:56,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:53:56,087 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 15:53:56,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:53:56,088 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:53:56,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:53:56,088 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:53:56,088 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:53:56,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:53:56,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:53:56 BasicIcfg [2020-09-11 15:53:56,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:53:56,097 INFO L168 Benchmark]: Toolchain (without parser) took 5225.17 ms. Allocated memory was 147.3 MB in the beginning and 245.9 MB in the end (delta: 98.6 MB). Free memory was 102.1 MB in the beginning and 140.2 MB in the end (delta: -38.1 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. [2020-09-11 15:53:56,098 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:53:56,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 771.23 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 101.7 MB in the beginning and 162.0 MB in the end (delta: -60.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-11 15:53:56,100 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.77 ms. Allocated memory is still 204.5 MB. Free memory was 162.0 MB in the beginning and 160.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:53:56,101 INFO L168 Benchmark]: Boogie Preprocessor took 29.38 ms. Allocated memory is still 204.5 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:53:56,102 INFO L168 Benchmark]: RCFGBuilder took 540.89 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 136.3 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:53:56,103 INFO L168 Benchmark]: TraceAbstraction took 3818.84 ms. Allocated memory was 204.5 MB in the beginning and 245.9 MB in the end (delta: 41.4 MB). Free memory was 135.7 MB in the beginning and 140.2 MB in the end (delta: -4.6 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-09-11 15:53:56,107 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 771.23 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 101.7 MB in the beginning and 162.0 MB in the end (delta: -60.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.77 ms. Allocated memory is still 204.5 MB. Free memory was 162.0 MB in the beginning and 160.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.38 ms. Allocated memory is still 204.5 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 540.89 ms. Allocated memory is still 204.5 MB. Free memory was 158.7 MB in the beginning and 136.3 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3818.84 ms. Allocated memory was 204.5 MB in the beginning and 245.9 MB in the end (delta: 41.4 MB). Free memory was 135.7 MB in the beginning and 140.2 MB in the end (delta: -4.6 MB). Peak memory consumption was 36.8 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, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 643 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 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: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 156 SDtfs, 123 SDslu, 193 SDs, 0 SdLazy, 117 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3220 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...