/usr/bin/java -Xmx16000000000 -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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:11:52,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:11:52,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:11:52,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:11:52,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:11:52,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:11:52,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:11:52,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:11:52,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:11:52,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:11:52,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:11:52,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:11:52,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:11:52,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:11:52,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:11:52,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:11:52,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:11:52,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:11:52,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:11:52,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:11:52,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:11:52,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:11:52,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:11:52,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:11:52,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 22:11:52,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 22:11:52,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 22:11:52,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 22:11:52,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 22:11:52,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 22:11:52,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:11:52,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:11:52,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:11:52,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:11:52,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:11:52,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:11:52,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:11:52,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:11:52,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:11:52,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:11:52,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:11:52,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 22:11:52,316 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:11:52,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:11:52,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:11:52,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:11:52,319 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:11:52,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:11:52,320 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:11:52,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:11:52,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:11:52,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:11:52,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:11:52,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:11:52,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:11:52,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:11:52,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:11:52,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:11:52,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:11:52,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:11:52,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:11:52,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:11:52,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:11:52,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:11:52,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:11:52,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:11:52,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:11:52,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:11:52,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:11:52,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:11:52,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:11:52,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:11:52,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:11:52,647 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:11:52,649 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:11:52,649 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:11:52,650 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-10-15 22:11:52,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a0f8dec/b46d2437715a4778958b9bf4783709e3/FLAG730731036 [2020-10-15 22:11:53,315 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:11:53,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-10-15 22:11:53,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a0f8dec/b46d2437715a4778958b9bf4783709e3/FLAG730731036 [2020-10-15 22:11:53,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83a0f8dec/b46d2437715a4778958b9bf4783709e3 [2020-10-15 22:11:53,486 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:11:53,488 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:11:53,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:11:53,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:11:53,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:11:53,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:11:53" (1/1) ... [2020-10-15 22:11:53,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345ae72a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:53, skipping insertion in model container [2020-10-15 22:11:53,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:11:53" (1/1) ... [2020-10-15 22:11:53,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:11:53,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:11:54,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:11:54,035 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:11:54,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:11:54,195 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:11:54,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54 WrapperNode [2020-10-15 22:11:54,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:11:54,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:11:54,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:11:54,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:11:54,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:11:54,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:11:54,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:11:54,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:11:54,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... [2020-10-15 22:11:54,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:11:54,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:11:54,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:11:54,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:11:54,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:11:54,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:11:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 22:11:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:11:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:11:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 22:11:54,340 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 22:11:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 22:11:54,340 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 22:11:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 22:11:54,340 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 22:11:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-15 22:11:54,341 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-15 22:11:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 22:11:54,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:11:54,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:11:54,343 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 22:11:54,721 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:11:54,722 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 22:11:54,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:11:54 BoogieIcfgContainer [2020-10-15 22:11:54,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:11:54,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:11:54,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:11:54,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:11:54,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:11:53" (1/3) ... [2020-10-15 22:11:54,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2d845a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:11:54, skipping insertion in model container [2020-10-15 22:11:54,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:54" (2/3) ... [2020-10-15 22:11:54,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2d845a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:11:54, skipping insertion in model container [2020-10-15 22:11:54,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:11:54" (3/3) ... [2020-10-15 22:11:54,734 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2020-10-15 22:11:54,746 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:11:54,747 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:11:54,754 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:11:54,755 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:11:54,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,805 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,805 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,806 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,808 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,808 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,808 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,809 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,809 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,809 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,810 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,810 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,810 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,810 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,811 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,811 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,811 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,811 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,812 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,812 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,813 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,817 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,818 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,818 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,818 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,825 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,825 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,827 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,827 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,828 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,830 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,831 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,831 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,831 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:54,848 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-15 22:11:54,870 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:11:54,870 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:11:54,870 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:11:54,870 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:11:54,870 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:11:54,870 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:11:54,871 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:11:54,871 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:11:54,884 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:11:54,887 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-15 22:11:54,891 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-15 22:11:54,893 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-15 22:11:54,965 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-15 22:11:54,965 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 22:11:54,971 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-15 22:11:54,975 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-15 22:11:56,635 INFO L132 LiptonReduction]: Checked pairs total: 3057 [2020-10-15 22:11:56,636 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-15 22:11:56,644 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-10-15 22:11:56,726 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-10-15 22:11:56,728 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-10-15 22:11:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 22:11:56,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:56,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:56,742 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:56,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:56,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-10-15 22:11:56,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:56,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238215807] [2020-10-15 22:11:56,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:56,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238215807] [2020-10-15 22:11:56,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:56,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:11:56,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296785924] [2020-10-15 22:11:56,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-15 22:11:56,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:56,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-15 22:11:56,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 22:11:56,989 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-10-15 22:11:57,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:57,075 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-10-15 22:11:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-15 22:11:57,083 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-15 22:11:57,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:57,126 INFO L225 Difference]: With dead ends: 850 [2020-10-15 22:11:57,127 INFO L226 Difference]: Without dead ends: 706 [2020-10-15 22:11:57,128 INFO L677 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 [2020-10-15 22:11:57,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-15 22:11:57,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-10-15 22:11:57,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-15 22:11:57,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-10-15 22:11:57,247 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-10-15 22:11:57,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:57,249 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-10-15 22:11:57,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-15 22:11:57,249 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-10-15 22:11:57,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:11:57,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:57,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:57,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:11:57,263 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:57,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:57,263 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-10-15 22:11:57,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:57,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402314872] [2020-10-15 22:11:57,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:57,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402314872] [2020-10-15 22:11:57,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:57,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:11:57,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925635277] [2020-10-15 22:11:57,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:57,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:57,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:57,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:57,476 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-10-15 22:11:57,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:57,521 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-10-15 22:11:57,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:11:57,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 22:11:57,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:57,528 INFO L225 Difference]: With dead ends: 802 [2020-10-15 22:11:57,529 INFO L226 Difference]: Without dead ends: 658 [2020-10-15 22:11:57,529 INFO L677 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 [2020-10-15 22:11:57,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-15 22:11:57,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-10-15 22:11:57,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-15 22:11:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-10-15 22:11:57,556 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-10-15 22:11:57,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:57,557 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-10-15 22:11:57,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:57,557 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-10-15 22:11:57,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 22:11:57,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:57,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:57,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:11:57,559 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:57,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:57,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1501347001, now seen corresponding path program 1 times [2020-10-15 22:11:57,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:57,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234483453] [2020-10-15 22:11:57,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:57,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234483453] [2020-10-15 22:11:57,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:57,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:11:57,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228894493] [2020-10-15 22:11:57,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:57,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:57,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:57,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:57,615 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-10-15 22:11:57,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:57,658 INFO L93 Difference]: Finished difference Result 718 states and 2348 transitions. [2020-10-15 22:11:57,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:11:57,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 22:11:57,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:57,663 INFO L225 Difference]: With dead ends: 718 [2020-10-15 22:11:57,664 INFO L226 Difference]: Without dead ends: 598 [2020-10-15 22:11:57,664 INFO L677 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 [2020-10-15 22:11:57,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-15 22:11:57,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-10-15 22:11:57,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-10-15 22:11:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1992 transitions. [2020-10-15 22:11:57,685 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1992 transitions. Word has length 12 [2020-10-15 22:11:57,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:57,685 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 1992 transitions. [2020-10-15 22:11:57,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:57,686 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1992 transitions. [2020-10-15 22:11:57,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 22:11:57,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:57,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:57,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 22:11:57,688 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:57,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:57,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1422147839, now seen corresponding path program 1 times [2020-10-15 22:11:57,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:57,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844493484] [2020-10-15 22:11:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:57,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:57,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844493484] [2020-10-15 22:11:57,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:57,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:11:57,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165617568] [2020-10-15 22:11:57,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:11:57,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:57,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:11:57,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:57,749 INFO L87 Difference]: Start difference. First operand 598 states and 1992 transitions. Second operand 5 states. [2020-10-15 22:11:57,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:57,796 INFO L93 Difference]: Finished difference Result 928 states and 3061 transitions. [2020-10-15 22:11:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:11:57,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 22:11:57,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:57,801 INFO L225 Difference]: With dead ends: 928 [2020-10-15 22:11:57,801 INFO L226 Difference]: Without dead ends: 550 [2020-10-15 22:11:57,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:11:57,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-10-15 22:11:57,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2020-10-15 22:11:57,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-15 22:11:57,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1794 transitions. [2020-10-15 22:11:57,821 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1794 transitions. Word has length 13 [2020-10-15 22:11:57,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:57,822 INFO L481 AbstractCegarLoop]: Abstraction has 550 states and 1794 transitions. [2020-10-15 22:11:57,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:11:57,822 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1794 transitions. [2020-10-15 22:11:57,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 22:11:57,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:57,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:57,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 22:11:57,824 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:57,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:57,824 INFO L82 PathProgramCache]: Analyzing trace with hash 702868169, now seen corresponding path program 2 times [2020-10-15 22:11:57,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:57,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926180289] [2020-10-15 22:11:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:57,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926180289] [2020-10-15 22:11:57,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:57,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:11:57,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055593388] [2020-10-15 22:11:57,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:57,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:57,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:57,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:57,871 INFO L87 Difference]: Start difference. First operand 550 states and 1794 transitions. Second operand 4 states. [2020-10-15 22:11:57,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:57,897 INFO L93 Difference]: Finished difference Result 586 states and 1860 transitions. [2020-10-15 22:11:57,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:11:57,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-15 22:11:57,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:57,901 INFO L225 Difference]: With dead ends: 586 [2020-10-15 22:11:57,902 INFO L226 Difference]: Without dead ends: 514 [2020-10-15 22:11:57,902 INFO L677 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 [2020-10-15 22:11:57,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-15 22:11:57,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2020-10-15 22:11:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-15 22:11:57,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1656 transitions. [2020-10-15 22:11:57,918 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1656 transitions. Word has length 13 [2020-10-15 22:11:57,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:57,919 INFO L481 AbstractCegarLoop]: Abstraction has 514 states and 1656 transitions. [2020-10-15 22:11:57,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:57,919 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1656 transitions. [2020-10-15 22:11:57,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:11:57,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:57,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:57,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 22:11:57,921 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:57,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:57,921 INFO L82 PathProgramCache]: Analyzing trace with hash -464753782, now seen corresponding path program 1 times [2020-10-15 22:11:57,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:57,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893626829] [2020-10-15 22:11:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:57,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:57,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893626829] [2020-10-15 22:11:57,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:57,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:11:57,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210355948] [2020-10-15 22:11:57,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:57,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:57,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:57,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:57,964 INFO L87 Difference]: Start difference. First operand 514 states and 1656 transitions. Second operand 4 states. [2020-10-15 22:11:57,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:57,998 INFO L93 Difference]: Finished difference Result 776 states and 2379 transitions. [2020-10-15 22:11:57,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:11:57,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-15 22:11:57,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:58,003 INFO L225 Difference]: With dead ends: 776 [2020-10-15 22:11:58,003 INFO L226 Difference]: Without dead ends: 550 [2020-10-15 22:11:58,003 INFO L677 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 [2020-10-15 22:11:58,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-10-15 22:11:58,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 478. [2020-10-15 22:11:58,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-15 22:11:58,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1450 transitions. [2020-10-15 22:11:58,020 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1450 transitions. Word has length 14 [2020-10-15 22:11:58,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:58,020 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 1450 transitions. [2020-10-15 22:11:58,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:58,021 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1450 transitions. [2020-10-15 22:11:58,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:11:58,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:58,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:58,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 22:11:58,022 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:58,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:58,023 INFO L82 PathProgramCache]: Analyzing trace with hash -281370534, now seen corresponding path program 1 times [2020-10-15 22:11:58,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:58,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424206721] [2020-10-15 22:11:58,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:58,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:58,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424206721] [2020-10-15 22:11:58,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:58,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:11:58,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335772941] [2020-10-15 22:11:58,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:11:58,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:58,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:11:58,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:58,077 INFO L87 Difference]: Start difference. First operand 478 states and 1450 transitions. Second operand 5 states. [2020-10-15 22:11:58,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:58,143 INFO L93 Difference]: Finished difference Result 668 states and 1981 transitions. [2020-10-15 22:11:58,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:11:58,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-15 22:11:58,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:58,146 INFO L225 Difference]: With dead ends: 668 [2020-10-15 22:11:58,146 INFO L226 Difference]: Without dead ends: 326 [2020-10-15 22:11:58,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 22:11:58,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-15 22:11:58,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2020-10-15 22:11:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-15 22:11:58,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 955 transitions. [2020-10-15 22:11:58,158 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 955 transitions. Word has length 14 [2020-10-15 22:11:58,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:58,159 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 955 transitions. [2020-10-15 22:11:58,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:11:58,159 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 955 transitions. [2020-10-15 22:11:58,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:11:58,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:58,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:58,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 22:11:58,161 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:58,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:58,161 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 1 times [2020-10-15 22:11:58,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:58,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147473844] [2020-10-15 22:11:58,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:58,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147473844] [2020-10-15 22:11:58,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:58,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:11:58,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651847781] [2020-10-15 22:11:58,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:58,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:58,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:58,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:58,258 INFO L87 Difference]: Start difference. First operand 326 states and 955 transitions. Second operand 4 states. [2020-10-15 22:11:58,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:58,304 INFO L93 Difference]: Finished difference Result 390 states and 1053 transitions. [2020-10-15 22:11:58,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:11:58,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-15 22:11:58,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:58,307 INFO L225 Difference]: With dead ends: 390 [2020-10-15 22:11:58,307 INFO L226 Difference]: Without dead ends: 293 [2020-10-15 22:11:58,308 INFO L677 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 [2020-10-15 22:11:58,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-15 22:11:58,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2020-10-15 22:11:58,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-15 22:11:58,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 804 transitions. [2020-10-15 22:11:58,323 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 804 transitions. Word has length 15 [2020-10-15 22:11:58,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:58,323 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 804 transitions. [2020-10-15 22:11:58,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:58,323 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 804 transitions. [2020-10-15 22:11:58,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 22:11:58,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:58,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:58,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 22:11:58,325 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:58,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:58,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-10-15 22:11:58,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:58,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949575673] [2020-10-15 22:11:58,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:58,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:58,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949575673] [2020-10-15 22:11:58,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:58,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:11:58,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888963252] [2020-10-15 22:11:58,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:11:58,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:58,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:11:58,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:58,409 INFO L87 Difference]: Start difference. First operand 293 states and 804 transitions. Second operand 5 states. [2020-10-15 22:11:58,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:58,462 INFO L93 Difference]: Finished difference Result 296 states and 728 transitions. [2020-10-15 22:11:58,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:11:58,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-15 22:11:58,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:58,465 INFO L225 Difference]: With dead ends: 296 [2020-10-15 22:11:58,465 INFO L226 Difference]: Without dead ends: 218 [2020-10-15 22:11:58,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:11:58,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-15 22:11:58,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-15 22:11:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-15 22:11:58,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 525 transitions. [2020-10-15 22:11:58,474 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 525 transitions. Word has length 16 [2020-10-15 22:11:58,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:58,474 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 525 transitions. [2020-10-15 22:11:58,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:11:58,475 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 525 transitions. [2020-10-15 22:11:58,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 22:11:58,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:58,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:58,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 22:11:58,476 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:58,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:58,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-10-15 22:11:58,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:58,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109533692] [2020-10-15 22:11:58,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:58,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109533692] [2020-10-15 22:11:58,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:58,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 22:11:58,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662532854] [2020-10-15 22:11:58,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:11:58,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:58,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:11:58,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:11:58,560 INFO L87 Difference]: Start difference. First operand 218 states and 525 transitions. Second operand 6 states. [2020-10-15 22:11:58,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:58,627 INFO L93 Difference]: Finished difference Result 196 states and 441 transitions. [2020-10-15 22:11:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:11:58,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-15 22:11:58,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:58,629 INFO L225 Difference]: With dead ends: 196 [2020-10-15 22:11:58,629 INFO L226 Difference]: Without dead ends: 157 [2020-10-15 22:11:58,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:11:58,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-15 22:11:58,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-10-15 22:11:58,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-15 22:11:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 352 transitions. [2020-10-15 22:11:58,635 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 352 transitions. Word has length 17 [2020-10-15 22:11:58,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:58,635 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 352 transitions. [2020-10-15 22:11:58,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:11:58,635 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 352 transitions. [2020-10-15 22:11:58,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 22:11:58,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:58,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:58,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 22:11:58,637 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:58,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:58,637 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-10-15 22:11:58,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:58,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690965521] [2020-10-15 22:11:58,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:58,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690965521] [2020-10-15 22:11:58,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:58,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:11:58,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656450902] [2020-10-15 22:11:58,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:11:58,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:58,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:11:58,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:58,679 INFO L87 Difference]: Start difference. First operand 157 states and 352 transitions. Second operand 5 states. [2020-10-15 22:11:58,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:58,709 INFO L93 Difference]: Finished difference Result 197 states and 430 transitions. [2020-10-15 22:11:58,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:11:58,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-15 22:11:58,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:58,711 INFO L225 Difference]: With dead ends: 197 [2020-10-15 22:11:58,711 INFO L226 Difference]: Without dead ends: 148 [2020-10-15 22:11:58,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:11:58,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-15 22:11:58,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2020-10-15 22:11:58,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-15 22:11:58,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 314 transitions. [2020-10-15 22:11:58,717 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 314 transitions. Word has length 19 [2020-10-15 22:11:58,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:58,717 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 314 transitions. [2020-10-15 22:11:58,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:11:58,717 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 314 transitions. [2020-10-15 22:11:58,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 22:11:58,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:58,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:58,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 22:11:58,719 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:58,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:58,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-10-15 22:11:58,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:58,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048457514] [2020-10-15 22:11:58,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:58,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048457514] [2020-10-15 22:11:58,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:58,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 22:11:58,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860161189] [2020-10-15 22:11:58,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 22:11:58,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:58,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 22:11:58,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:11:58,784 INFO L87 Difference]: Start difference. First operand 144 states and 314 transitions. Second operand 7 states. [2020-10-15 22:11:58,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:58,853 INFO L93 Difference]: Finished difference Result 133 states and 290 transitions. [2020-10-15 22:11:58,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 22:11:58,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 22:11:58,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:58,854 INFO L225 Difference]: With dead ends: 133 [2020-10-15 22:11:58,855 INFO L226 Difference]: Without dead ends: 52 [2020-10-15 22:11:58,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-15 22:11:58,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-15 22:11:58,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-15 22:11:58,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-15 22:11:58,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-10-15 22:11:58,858 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 19 [2020-10-15 22:11:58,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:58,859 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-10-15 22:11:58,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 22:11:58,859 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-10-15 22:11:58,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 22:11:58,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:58,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:58,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 22:11:58,860 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:58,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:58,860 INFO L82 PathProgramCache]: Analyzing trace with hash 2139262285, now seen corresponding path program 1 times [2020-10-15 22:11:58,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:58,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994145262] [2020-10-15 22:11:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:58,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:58,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994145262] [2020-10-15 22:11:58,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:58,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:11:58,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502863153] [2020-10-15 22:11:58,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:58,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:58,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:58,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:58,901 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 4 states. [2020-10-15 22:11:58,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:58,917 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-10-15 22:11:58,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:11:58,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-15 22:11:58,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:58,918 INFO L225 Difference]: With dead ends: 51 [2020-10-15 22:11:58,918 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 22:11:58,919 INFO L677 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 [2020-10-15 22:11:58,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 22:11:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 22:11:58,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 22:11:58,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 22:11:58,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-15 22:11:58,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:58,920 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 22:11:58,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:58,920 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 22:11:58,920 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 22:11:58,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 22:11:58,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:11:58 BasicIcfg [2020-10-15 22:11:58,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:11:58,928 INFO L168 Benchmark]: Toolchain (without parser) took 5439.03 ms. Allocated memory was 253.2 MB in the beginning and 424.1 MB in the end (delta: 170.9 MB). Free memory was 209.0 MB in the beginning and 302.5 MB in the end (delta: -93.4 MB). Peak memory consumption was 77.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:58,928 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:11:58,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.29 ms. Allocated memory was 253.2 MB in the beginning and 322.4 MB in the end (delta: 69.2 MB). Free memory was 209.0 MB in the beginning and 275.3 MB in the end (delta: -66.2 MB). Peak memory consumption was 32.9 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:58,930 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.08 ms. Allocated memory is still 322.4 MB. Free memory is still 275.3 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:11:58,930 INFO L168 Benchmark]: Boogie Preprocessor took 27.09 ms. Allocated memory is still 322.4 MB. Free memory was 275.3 MB in the beginning and 272.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:58,931 INFO L168 Benchmark]: RCFGBuilder took 451.39 ms. Allocated memory is still 322.4 MB. Free memory was 272.7 MB in the beginning and 248.4 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:58,932 INFO L168 Benchmark]: TraceAbstraction took 4199.13 ms. Allocated memory was 322.4 MB in the beginning and 424.1 MB in the end (delta: 101.7 MB). Free memory was 248.4 MB in the beginning and 302.5 MB in the end (delta: -54.0 MB). Peak memory consumption was 47.7 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:58,935 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 707.29 ms. Allocated memory was 253.2 MB in the beginning and 322.4 MB in the end (delta: 69.2 MB). Free memory was 209.0 MB in the beginning and 275.3 MB in the end (delta: -66.2 MB). Peak memory consumption was 32.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.08 ms. Allocated memory is still 322.4 MB. Free memory is still 275.3 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.09 ms. Allocated memory is still 322.4 MB. Free memory was 275.3 MB in the beginning and 272.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 451.39 ms. Allocated memory is still 322.4 MB. Free memory was 272.7 MB in the beginning and 248.4 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4199.13 ms. Allocated memory was 322.4 MB in the beginning and 424.1 MB in the end (delta: 101.7 MB). Free memory was 248.4 MB in the beginning and 302.5 MB in the end (delta: -54.0 MB). Peak memory consumption was 47.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1223 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 103 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 91 PlacesBefore, 39 PlacesAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 3057 MoverChecksTotal - 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, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 345 SDtfs, 327 SDslu, 580 SDs, 0 SdLazy, 232 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 76 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 181 ConstructedInterpolants, 0 QuantifiedInterpolants, 7691 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...