/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 18:07:54,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 18:07:54,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 18:07:54,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 18:07:54,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 18:07:54,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 18:07:54,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 18:07:54,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 18:07:54,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 18:07:54,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 18:07:54,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 18:07:54,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 18:07:54,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 18:07:54,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 18:07:54,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 18:07:54,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 18:07:54,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 18:07:54,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 18:07:54,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 18:07:54,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 18:07:54,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 18:07:54,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 18:07:54,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 18:07:54,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 18:07:54,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 18:07:54,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 18:07:54,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 18:07:54,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 18:07:54,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 18:07:54,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 18:07:54,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 18:07:54,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 18:07:54,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 18:07:54,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 18:07:54,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 18:07:54,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 18:07:54,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 18:07:54,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 18:07:54,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 18:07:54,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 18:07:54,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 18:07:54,529 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 18:07:54,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 18:07:54,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 18:07:54,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 18:07:54,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 18:07:54,566 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 18:07:54,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 18:07:54,569 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 18:07:54,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 18:07:54,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 18:07:54,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 18:07:54,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 18:07:54,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 18:07:54,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 18:07:54,570 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 18:07:54,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 18:07:54,570 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 18:07:54,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 18:07:54,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 18:07:54,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 18:07:54,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 18:07:54,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 18:07:54,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 18:07:54,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 18:07:54,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 18:07:54,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 18:07:54,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 18:07:54,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 18:07:54,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 18:07:54,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 18:07:54,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 18:07:54,855 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 18:07:54,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 18:07:54,881 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 18:07:54,883 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 18:07:54,883 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 18:07:54,885 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i [2020-04-17 18:07:54,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50eb303bb/52c83fc7ee4447b89ecbdcfd9aeca0ee/FLAGce9763bc5 [2020-04-17 18:07:55,527 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 18:07:55,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i [2020-04-17 18:07:55,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50eb303bb/52c83fc7ee4447b89ecbdcfd9aeca0ee/FLAGce9763bc5 [2020-04-17 18:07:55,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50eb303bb/52c83fc7ee4447b89ecbdcfd9aeca0ee [2020-04-17 18:07:55,854 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 18:07:55,876 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 18:07:55,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 18:07:55,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 18:07:55,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 18:07:55,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:07:55" (1/1) ... [2020-04-17 18:07:55,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3733a1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:07:55, skipping insertion in model container [2020-04-17 18:07:55,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:07:55" (1/1) ... [2020-04-17 18:07:55,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 18:07:55,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 18:07:56,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:07:56,420 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 18:07:56,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:07:56,565 INFO L208 MainTranslator]: Completed translation [2020-04-17 18:07:56,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:07:56 WrapperNode [2020-04-17 18:07:56,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 18:07:56,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 18:07:56,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 18:07:56,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 18:07:56,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:07:56" (1/1) ... [2020-04-17 18:07:56,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:07:56" (1/1) ... [2020-04-17 18:07:56,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 18:07:56,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 18:07:56,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 18:07:56,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 18:07:56,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:07:56" (1/1) ... [2020-04-17 18:07:56,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:07:56" (1/1) ... [2020-04-17 18:07:56,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:07:56" (1/1) ... [2020-04-17 18:07:56,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:07:56" (1/1) ... [2020-04-17 18:07:56,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:07:56" (1/1) ... [2020-04-17 18:07:56,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:07:56" (1/1) ... [2020-04-17 18:07:56,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:07:56" (1/1) ... [2020-04-17 18:07:56,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 18:07:56,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 18:07:56,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 18:07:56,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 18:07:56,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:07:56" (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 [2020-04-17 18:07:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 18:07:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 18:07:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 18:07:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 18:07:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 18:07:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 18:07:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 18:07:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 18:07:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 18:07:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 18:07:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-17 18:07:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-17 18:07:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 18:07:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 18:07:56,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 18:07:56,731 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 18:07:57,171 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 18:07:57,171 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 18:07:57,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:07:57 BoogieIcfgContainer [2020-04-17 18:07:57,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 18:07:57,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 18:07:57,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 18:07:57,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 18:07:57,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 06:07:55" (1/3) ... [2020-04-17 18:07:57,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67487ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:07:57, skipping insertion in model container [2020-04-17 18:07:57,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:07:56" (2/3) ... [2020-04-17 18:07:57,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67487ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:07:57, skipping insertion in model container [2020-04-17 18:07:57,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:07:57" (3/3) ... [2020-04-17 18:07:57,187 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc.i [2020-04-17 18:07:57,199 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 18:07:57,199 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 18:07:57,207 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 18:07:57,208 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 18:07:57,251 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,251 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,251 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,252 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,252 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,253 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,253 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,253 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,254 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,254 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,254 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,255 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,255 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,255 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,256 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,256 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,256 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,257 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,257 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,257 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,258 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,258 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,258 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,259 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,263 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,264 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,264 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,264 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,270 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,270 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,271 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,271 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,274 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,274 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,274 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,274 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,279 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,279 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,279 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,280 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:07:57,299 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-17 18:07:57,324 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:07:57,324 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:07:57,324 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:07:57,324 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:07:57,325 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:07:57,325 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:07:57,325 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:07:57,325 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:07:57,351 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 82 transitions, 184 flow [2020-04-17 18:07:57,353 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-04-17 18:07:57,422 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-04-17 18:07:57,423 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:07:57,428 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-17 18:07:57,431 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-04-17 18:07:57,453 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-04-17 18:07:57,454 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:07:57,455 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-17 18:07:57,458 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-17 18:07:57,459 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:07:59,232 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-17 18:07:59,309 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2807 [2020-04-17 18:07:59,309 INFO L214 etLargeBlockEncoding]: Total number of compositions: 63 [2020-04-17 18:07:59,313 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-04-17 18:07:59,384 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-04-17 18:07:59,387 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-04-17 18:07:59,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 18:07:59,399 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:07:59,401 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:07:59,401 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:07:59,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:07:59,411 INFO L82 PathProgramCache]: Analyzing trace with hash 91051740, now seen corresponding path program 1 times [2020-04-17 18:07:59,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:07:59,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211752442] [2020-04-17 18:07:59,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:07:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:07:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:07:59,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211752442] [2020-04-17 18:07:59,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:07:59,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:07:59,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230357613] [2020-04-17 18:07:59,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 18:07:59,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:07:59,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 18:07:59,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 18:07:59,668 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-04-17 18:07:59,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:07:59,719 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-04-17 18:07:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 18:07:59,721 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-17 18:07:59,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:07:59,767 INFO L225 Difference]: With dead ends: 850 [2020-04-17 18:07:59,768 INFO L226 Difference]: Without dead ends: 706 [2020-04-17 18:07:59,770 INFO L678 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 [2020-04-17 18:07:59,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-04-17 18:07:59,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-04-17 18:07:59,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-04-17 18:07:59,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-04-17 18:07:59,912 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-04-17 18:07:59,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:07:59,913 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-04-17 18:07:59,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 18:07:59,914 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-04-17 18:07:59,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 18:07:59,916 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:07:59,916 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:07:59,917 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:07:59,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:07:59,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1472387704, now seen corresponding path program 1 times [2020-04-17 18:07:59,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:07:59,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119859487] [2020-04-17 18:07:59,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:07:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:08:00,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:08:00,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119859487] [2020-04-17 18:08:00,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:08:00,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:08:00,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178669216] [2020-04-17 18:08:00,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:08:00,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:08:00,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:08:00,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:08:00,102 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-04-17 18:08:00,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:08:00,159 INFO L93 Difference]: Finished difference Result 778 states and 2592 transitions. [2020-04-17 18:08:00,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:08:00,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 18:08:00,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:08:00,167 INFO L225 Difference]: With dead ends: 778 [2020-04-17 18:08:00,168 INFO L226 Difference]: Without dead ends: 634 [2020-04-17 18:08:00,169 INFO L678 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 [2020-04-17 18:08:00,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-04-17 18:08:00,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-04-17 18:08:00,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-04-17 18:08:00,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2020-04-17 18:08:00,215 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 11 [2020-04-17 18:08:00,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:08:00,215 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2020-04-17 18:08:00,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:08:00,215 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2020-04-17 18:08:00,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 18:08:00,223 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:08:00,224 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:08:00,224 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:08:00,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:08:00,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1606888751, now seen corresponding path program 1 times [2020-04-17 18:08:00,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:08:00,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025073528] [2020-04-17 18:08:00,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:08:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:08:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:08:00,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025073528] [2020-04-17 18:08:00,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:08:00,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:08:00,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292348066] [2020-04-17 18:08:00,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:08:00,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:08:00,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:08:00,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:08:00,354 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand 4 states. [2020-04-17 18:08:00,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:08:00,385 INFO L93 Difference]: Finished difference Result 688 states and 2256 transitions. [2020-04-17 18:08:00,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:08:00,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 18:08:00,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:08:00,391 INFO L225 Difference]: With dead ends: 688 [2020-04-17 18:08:00,391 INFO L226 Difference]: Without dead ends: 580 [2020-04-17 18:08:00,391 INFO L678 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 [2020-04-17 18:08:00,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-04-17 18:08:00,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2020-04-17 18:08:00,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-04-17 18:08:00,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1932 transitions. [2020-04-17 18:08:00,413 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1932 transitions. Word has length 12 [2020-04-17 18:08:00,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:08:00,414 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 1932 transitions. [2020-04-17 18:08:00,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:08:00,414 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1932 transitions. [2020-04-17 18:08:00,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 18:08:00,415 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:08:00,416 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:08:00,416 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:08:00,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:08:00,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1718865431, now seen corresponding path program 1 times [2020-04-17 18:08:00,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:08:00,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891274393] [2020-04-17 18:08:00,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:08:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:08:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:08:00,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891274393] [2020-04-17 18:08:00,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:08:00,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 18:08:00,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160630771] [2020-04-17 18:08:00,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 18:08:00,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:08:00,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 18:08:00,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-17 18:08:00,519 INFO L87 Difference]: Start difference. First operand 580 states and 1932 transitions. Second operand 6 states. [2020-04-17 18:08:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:08:00,682 INFO L93 Difference]: Finished difference Result 859 states and 2769 transitions. [2020-04-17 18:08:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 18:08:00,683 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-04-17 18:08:00,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:08:00,689 INFO L225 Difference]: With dead ends: 859 [2020-04-17 18:08:00,690 INFO L226 Difference]: Without dead ends: 466 [2020-04-17 18:08:00,690 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-04-17 18:08:00,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-04-17 18:08:00,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2020-04-17 18:08:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-04-17 18:08:00,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1466 transitions. [2020-04-17 18:08:00,708 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1466 transitions. Word has length 13 [2020-04-17 18:08:00,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:08:00,708 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 1466 transitions. [2020-04-17 18:08:00,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 18:08:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1466 transitions. [2020-04-17 18:08:00,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 18:08:00,710 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:08:00,710 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:08:00,710 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:08:00,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:08:00,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1081404616, now seen corresponding path program 1 times [2020-04-17 18:08:00,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:08:00,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334233085] [2020-04-17 18:08:00,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:08:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:08:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:08:00,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334233085] [2020-04-17 18:08:00,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:08:00,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:08:00,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156750748] [2020-04-17 18:08:00,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:08:00,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:08:00,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:08:00,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:08:00,830 INFO L87 Difference]: Start difference. First operand 466 states and 1466 transitions. Second operand 5 states. [2020-04-17 18:08:00,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:08:00,913 INFO L93 Difference]: Finished difference Result 661 states and 2029 transitions. [2020-04-17 18:08:00,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 18:08:00,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 18:08:00,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:08:00,923 INFO L225 Difference]: With dead ends: 661 [2020-04-17 18:08:00,923 INFO L226 Difference]: Without dead ends: 352 [2020-04-17 18:08:00,924 INFO L678 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 [2020-04-17 18:08:00,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-04-17 18:08:00,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2020-04-17 18:08:00,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-04-17 18:08:00,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1048 transitions. [2020-04-17 18:08:00,948 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1048 transitions. Word has length 14 [2020-04-17 18:08:00,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:08:00,948 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 1048 transitions. [2020-04-17 18:08:00,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:08:00,949 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1048 transitions. [2020-04-17 18:08:00,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 18:08:00,950 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:08:00,950 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:08:00,950 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:08:00,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:08:00,951 INFO L82 PathProgramCache]: Analyzing trace with hash 228015141, now seen corresponding path program 1 times [2020-04-17 18:08:00,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:08:00,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255624455] [2020-04-17 18:08:00,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:08:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:08:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:08:01,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255624455] [2020-04-17 18:08:01,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:08:01,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:08:01,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384760391] [2020-04-17 18:08:01,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:08:01,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:08:01,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:08:01,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:08:01,036 INFO L87 Difference]: Start difference. First operand 352 states and 1048 transitions. Second operand 5 states. [2020-04-17 18:08:01,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:08:01,097 INFO L93 Difference]: Finished difference Result 424 states and 1225 transitions. [2020-04-17 18:08:01,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 18:08:01,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 18:08:01,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:08:01,100 INFO L225 Difference]: With dead ends: 424 [2020-04-17 18:08:01,100 INFO L226 Difference]: Without dead ends: 262 [2020-04-17 18:08:01,101 INFO L678 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 [2020-04-17 18:08:01,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-04-17 18:08:01,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-04-17 18:08:01,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-04-17 18:08:01,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 771 transitions. [2020-04-17 18:08:01,109 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 771 transitions. Word has length 15 [2020-04-17 18:08:01,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:08:01,110 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 771 transitions. [2020-04-17 18:08:01,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:08:01,110 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 771 transitions. [2020-04-17 18:08:01,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 18:08:01,111 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:08:01,111 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:08:01,111 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:08:01,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:08:01,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1257194017, now seen corresponding path program 1 times [2020-04-17 18:08:01,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:08:01,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926574318] [2020-04-17 18:08:01,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:08:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:08:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:08:01,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926574318] [2020-04-17 18:08:01,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:08:01,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:08:01,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402616587] [2020-04-17 18:08:01,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:08:01,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:08:01,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:08:01,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:08:01,190 INFO L87 Difference]: Start difference. First operand 262 states and 771 transitions. Second operand 4 states. [2020-04-17 18:08:01,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:08:01,233 INFO L93 Difference]: Finished difference Result 319 states and 873 transitions. [2020-04-17 18:08:01,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:08:01,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 18:08:01,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:08:01,236 INFO L225 Difference]: With dead ends: 319 [2020-04-17 18:08:01,236 INFO L226 Difference]: Without dead ends: 238 [2020-04-17 18:08:01,237 INFO L678 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 [2020-04-17 18:08:01,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-04-17 18:08:01,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-04-17 18:08:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-04-17 18:08:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 659 transitions. [2020-04-17 18:08:01,277 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 659 transitions. Word has length 15 [2020-04-17 18:08:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:08:01,277 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 659 transitions. [2020-04-17 18:08:01,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:08:01,277 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 659 transitions. [2020-04-17 18:08:01,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 18:08:01,278 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:08:01,278 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:08:01,279 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:08:01,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:08:01,279 INFO L82 PathProgramCache]: Analyzing trace with hash -857649028, now seen corresponding path program 1 times [2020-04-17 18:08:01,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:08:01,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971956349] [2020-04-17 18:08:01,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:08:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:08:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:08:01,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971956349] [2020-04-17 18:08:01,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:08:01,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 18:08:01,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136241757] [2020-04-17 18:08:01,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:08:01,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:08:01,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:08:01,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:08:01,364 INFO L87 Difference]: Start difference. First operand 238 states and 659 transitions. Second operand 5 states. [2020-04-17 18:08:01,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:08:01,422 INFO L93 Difference]: Finished difference Result 247 states and 617 transitions. [2020-04-17 18:08:01,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 18:08:01,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-17 18:08:01,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:08:01,424 INFO L225 Difference]: With dead ends: 247 [2020-04-17 18:08:01,424 INFO L226 Difference]: Without dead ends: 182 [2020-04-17 18:08:01,425 INFO L678 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 [2020-04-17 18:08:01,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-17 18:08:01,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-17 18:08:01,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-17 18:08:01,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 443 transitions. [2020-04-17 18:08:01,431 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 443 transitions. Word has length 16 [2020-04-17 18:08:01,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:08:01,432 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 443 transitions. [2020-04-17 18:08:01,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:08:01,432 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 443 transitions. [2020-04-17 18:08:01,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 18:08:01,433 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:08:01,433 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:08:01,433 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:08:01,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:08:01,434 INFO L82 PathProgramCache]: Analyzing trace with hash -981483084, now seen corresponding path program 1 times [2020-04-17 18:08:01,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:08:01,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021790847] [2020-04-17 18:08:01,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:08:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:08:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:08:01,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021790847] [2020-04-17 18:08:01,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:08:01,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-17 18:08:01,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322624664] [2020-04-17 18:08:01,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 18:08:01,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:08:01,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 18:08:01,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 18:08:01,490 INFO L87 Difference]: Start difference. First operand 182 states and 443 transitions. Second operand 6 states. [2020-04-17 18:08:01,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:08:01,545 INFO L93 Difference]: Finished difference Result 165 states and 373 transitions. [2020-04-17 18:08:01,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 18:08:01,545 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-04-17 18:08:01,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:08:01,547 INFO L225 Difference]: With dead ends: 165 [2020-04-17 18:08:01,547 INFO L226 Difference]: Without dead ends: 132 [2020-04-17 18:08:01,547 INFO L678 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 [2020-04-17 18:08:01,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-04-17 18:08:01,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-04-17 18:08:01,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-04-17 18:08:01,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 295 transitions. [2020-04-17 18:08:01,552 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 295 transitions. Word has length 17 [2020-04-17 18:08:01,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:08:01,552 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 295 transitions. [2020-04-17 18:08:01,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 18:08:01,552 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 295 transitions. [2020-04-17 18:08:01,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-17 18:08:01,553 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:08:01,553 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:08:01,553 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:08:01,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:08:01,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1311703103, now seen corresponding path program 1 times [2020-04-17 18:08:01,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:08:01,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967866340] [2020-04-17 18:08:01,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:08:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:08:01,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:08:01,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967866340] [2020-04-17 18:08:01,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:08:01,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-17 18:08:01,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537730671] [2020-04-17 18:08:01,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-17 18:08:01,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:08:01,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-17 18:08:01,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-17 18:08:01,613 INFO L87 Difference]: Start difference. First operand 132 states and 295 transitions. Second operand 7 states. [2020-04-17 18:08:01,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:08:01,678 INFO L93 Difference]: Finished difference Result 121 states and 271 transitions. [2020-04-17 18:08:01,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 18:08:01,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-17 18:08:01,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:08:01,680 INFO L225 Difference]: With dead ends: 121 [2020-04-17 18:08:01,680 INFO L226 Difference]: Without dead ends: 112 [2020-04-17 18:08:01,680 INFO L678 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 [2020-04-17 18:08:01,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-04-17 18:08:01,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-04-17 18:08:01,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-04-17 18:08:01,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 255 transitions. [2020-04-17 18:08:01,685 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 255 transitions. Word has length 19 [2020-04-17 18:08:01,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:08:01,685 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 255 transitions. [2020-04-17 18:08:01,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-17 18:08:01,685 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 255 transitions. [2020-04-17 18:08:01,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-17 18:08:01,686 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:08:01,686 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:08:01,686 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:08:01,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:08:01,687 INFO L82 PathProgramCache]: Analyzing trace with hash 188961609, now seen corresponding path program 1 times [2020-04-17 18:08:01,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:08:01,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131569564] [2020-04-17 18:08:01,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:08:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:08:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:08:01,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131569564] [2020-04-17 18:08:01,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:08:01,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 18:08:01,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950878730] [2020-04-17 18:08:01,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:08:01,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:08:01,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:08:01,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:08:01,746 INFO L87 Difference]: Start difference. First operand 112 states and 255 transitions. Second operand 5 states. [2020-04-17 18:08:01,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:08:01,788 INFO L93 Difference]: Finished difference Result 146 states and 329 transitions. [2020-04-17 18:08:01,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:08:01,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-17 18:08:01,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:08:01,790 INFO L225 Difference]: With dead ends: 146 [2020-04-17 18:08:01,790 INFO L226 Difference]: Without dead ends: 52 [2020-04-17 18:08:01,790 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-17 18:08:01,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-17 18:08:01,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-17 18:08:01,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-17 18:08:01,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-04-17 18:08:01,793 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 21 [2020-04-17 18:08:01,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:08:01,794 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-04-17 18:08:01,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:08:01,794 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-04-17 18:08:01,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-17 18:08:01,794 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:08:01,795 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:08:01,795 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:08:01,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:08:01,795 INFO L82 PathProgramCache]: Analyzing trace with hash -62971415, now seen corresponding path program 2 times [2020-04-17 18:08:01,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:08:01,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540677649] [2020-04-17 18:08:01,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:08:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:08:01,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:08:01,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540677649] [2020-04-17 18:08:01,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:08:01,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 18:08:01,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113095709] [2020-04-17 18:08:01,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:08:01,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:08:01,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:08:01,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:08:01,862 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 5 states. [2020-04-17 18:08:01,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:08:01,899 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-04-17 18:08:01,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:08:01,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-04-17 18:08:01,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:08:01,900 INFO L225 Difference]: With dead ends: 51 [2020-04-17 18:08:01,900 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 18:08:01,901 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-17 18:08:01,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 18:08:01,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 18:08:01,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 18:08:01,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 18:08:01,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-04-17 18:08:01,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:08:01,902 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 18:08:01,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:08:01,902 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 18:08:01,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 18:08:01,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 06:08:01 BasicIcfg [2020-04-17 18:08:01,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 18:08:01,914 INFO L168 Benchmark]: Toolchain (without parser) took 6053.44 ms. Allocated memory was 146.3 MB in the beginning and 284.7 MB in the end (delta: 138.4 MB). Free memory was 102.9 MB in the beginning and 154.8 MB in the end (delta: -51.9 MB). Peak memory consumption was 86.5 MB. Max. memory is 7.1 GB. [2020-04-17 18:08:01,916 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-17 18:08:01,917 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.99 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 100.9 MB in the beginning and 160.5 MB in the end (delta: -59.6 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-04-17 18:08:01,918 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.69 ms. Allocated memory is still 204.5 MB. Free memory was 160.5 MB in the beginning and 158.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 18:08:01,918 INFO L168 Benchmark]: Boogie Preprocessor took 29.43 ms. Allocated memory is still 204.5 MB. Free memory was 158.5 MB in the beginning and 156.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 18:08:01,925 INFO L168 Benchmark]: RCFGBuilder took 502.00 ms. Allocated memory is still 204.5 MB. Free memory was 156.5 MB in the beginning and 132.6 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-04-17 18:08:01,926 INFO L168 Benchmark]: TraceAbstraction took 4729.13 ms. Allocated memory was 204.5 MB in the beginning and 284.7 MB in the end (delta: 80.2 MB). Free memory was 132.0 MB in the beginning and 154.8 MB in the end (delta: -22.8 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2020-04-17 18:08:01,937 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 688.99 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 100.9 MB in the beginning and 160.5 MB in the end (delta: -59.6 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 72.69 ms. Allocated memory is still 204.5 MB. Free memory was 160.5 MB in the beginning and 158.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.43 ms. Allocated memory is still 204.5 MB. Free memory was 158.5 MB in the beginning and 156.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 502.00 ms. Allocated memory is still 204.5 MB. Free memory was 156.5 MB in the beginning and 132.6 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4729.13 ms. Allocated memory was 204.5 MB in the beginning and 284.7 MB in the end (delta: 80.2 MB). Free memory was 132.0 MB in the beginning and 154.8 MB in the end (delta: -22.8 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 93 ProgramPointsBefore, 39 ProgramPointsAfterwards, 82 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 945 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2807 CheckedPairsTotal, 63 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 286 SDtfs, 354 SDslu, 543 SDs, 0 SdLazy, 272 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s 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, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 8524 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...