/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:05:00,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:05:00,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:05:00,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:05:00,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:05:00,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:05:00,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:05:00,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:05:00,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:05:00,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:05:00,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:05:00,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:05:00,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:05:00,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:05:00,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:05:00,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:05:00,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:05:00,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:05:00,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:05:00,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:05:00,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:05:00,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:05:00,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:05:00,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:05:00,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:05:00,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:05:00,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:05:00,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:05:00,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:05:00,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:05:00,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:05:00,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:05:00,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:05:00,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:05:00,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:05:00,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:05:00,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:05:00,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:05:00,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:05:00,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:05:00,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:05:00,540 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 [2020-04-17 22:05:00,574 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:05:00,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:05:00,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:05:00,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:05:00,581 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:05:00,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:05:00,581 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:05:00,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:05:00,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:05:00,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:05:00,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:05:00,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:05:00,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:05:00,582 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:05:00,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:05:00,583 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:05:00,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:05:00,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:05:00,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:05:00,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:05:00,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:05:00,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:05:00,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:05:00,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:05:00,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:05:00,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:05:00,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:05:00,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:05:00,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:05:00,892 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:05:00,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:05:00,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:05:00,916 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:05:00,917 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:05:00,917 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-04-17 22:05:00,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d836f4d/c556c89f57b849669511504a120cde16/FLAGb0d1f1f21 [2020-04-17 22:05:01,510 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:05:01,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2020-04-17 22:05:01,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d836f4d/c556c89f57b849669511504a120cde16/FLAGb0d1f1f21 [2020-04-17 22:05:01,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d836f4d/c556c89f57b849669511504a120cde16 [2020-04-17 22:05:01,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:05:01,891 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:05:01,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:05:01,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:05:01,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:05:01,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:05:01" (1/1) ... [2020-04-17 22:05:01,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1718f81b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:01, skipping insertion in model container [2020-04-17 22:05:01,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:05:01" (1/1) ... [2020-04-17 22:05:01,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:05:01,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:05:02,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:05:02,416 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:05:02,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:05:02,568 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:05:02,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:02 WrapperNode [2020-04-17 22:05:02,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:05:02,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:05:02,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:05:02,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:05:02,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:02" (1/1) ... [2020-04-17 22:05:02,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:02" (1/1) ... [2020-04-17 22:05:02,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:05:02,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:05:02,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:05:02,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:05:02,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:02" (1/1) ... [2020-04-17 22:05:02,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:02" (1/1) ... [2020-04-17 22:05:02,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:02" (1/1) ... [2020-04-17 22:05:02,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:02" (1/1) ... [2020-04-17 22:05:02,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:02" (1/1) ... [2020-04-17 22:05:02,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:02" (1/1) ... [2020-04-17 22:05:02,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:02" (1/1) ... [2020-04-17 22:05:02,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:05:02,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:05:02,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:05:02,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:05:02,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:02" (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 22:05:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:05:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:05:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:05:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:05:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:05:02,710 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:05:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:05:02,711 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:05:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:05:02,711 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:05:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:05:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:05:02,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:05:02,713 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 22:05:03,074 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:05:03,075 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:05:03,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:05:03 BoogieIcfgContainer [2020-04-17 22:05:03,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:05:03,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:05:03,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:05:03,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:05:03,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:05:01" (1/3) ... [2020-04-17 22:05:03,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134848c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:05:03, skipping insertion in model container [2020-04-17 22:05:03,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:05:02" (2/3) ... [2020-04-17 22:05:03,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134848c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:05:03, skipping insertion in model container [2020-04-17 22:05:03,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:05:03" (3/3) ... [2020-04-17 22:05:03,092 INFO L109 eAbstractionObserver]: Analyzing ICFG safe013_tso.oepc.i [2020-04-17 22:05:03,102 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:05:03,103 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:05:03,110 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:05:03,111 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:05:03,146 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,146 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,147 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,147 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,148 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,149 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,150 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,150 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,151 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,151 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,152 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,152 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,153 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,153 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,153 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,154 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,156 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,156 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,163 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,164 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,164 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,164 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,178 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,179 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,179 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,179 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,182 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,183 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,183 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,183 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:05:03,206 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:05:03,226 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:05:03,226 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:05:03,227 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:05:03,227 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:05:03,227 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:05:03,227 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:05:03,227 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:05:03,227 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:05:03,243 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 22:05:03,245 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:05:03,291 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:05:03,291 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:05:03,298 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:05:03,303 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:05:03,347 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:05:03,347 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:05:03,348 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:05:03,350 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:05:03,353 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:05:05,209 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-17 22:05:05,280 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2190 [2020-04-17 22:05:05,281 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-17 22:05:05,284 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-17 22:05:05,309 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 22:05:05,311 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 22:05:05,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:05:05,319 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:05:05,320 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:05:05,321 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:05:05,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:05:05,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1620259193, now seen corresponding path program 1 times [2020-04-17 22:05:05,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:05:05,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249694883] [2020-04-17 22:05:05,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:05:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:05:05,597 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 22:05:05,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249694883] [2020-04-17 22:05:05,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:05:05,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:05:05,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885600580] [2020-04-17 22:05:05,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:05:05,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:05:05,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:05:05,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:05:05,630 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 22:05:05,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:05:05,706 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-17 22:05:05,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:05:05,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 22:05:05,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:05:05,735 INFO L225 Difference]: With dead ends: 282 [2020-04-17 22:05:05,736 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 22:05:05,738 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:05:05,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 22:05:05,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 22:05:05,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 22:05:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-17 22:05:05,835 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-17 22:05:05,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:05:05,836 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-17 22:05:05,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:05:05,836 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-17 22:05:05,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:05:05,839 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:05:05,839 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:05:05,839 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:05:05,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:05:05,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1311571333, now seen corresponding path program 1 times [2020-04-17 22:05:05,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:05:05,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679385754] [2020-04-17 22:05:05,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:05:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:05:05,917 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 22:05:05,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679385754] [2020-04-17 22:05:05,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:05:05,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:05:05,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378341886] [2020-04-17 22:05:05,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:05:05,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:05:05,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:05:05,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:05:05,921 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-17 22:05:05,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:05:05,960 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-04-17 22:05:05,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:05:05,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 22:05:05,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:05:05,964 INFO L225 Difference]: With dead ends: 242 [2020-04-17 22:05:05,964 INFO L226 Difference]: Without dead ends: 146 [2020-04-17 22:05:05,965 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 22:05:05,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-17 22:05:05,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-17 22:05:05,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-17 22:05:05,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-17 22:05:05,974 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-04-17 22:05:05,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:05:05,974 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-17 22:05:05,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:05:05,975 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-17 22:05:05,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:05:05,976 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:05:05,976 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:05:05,976 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:05:05,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:05:05,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1994932005, now seen corresponding path program 1 times [2020-04-17 22:05:05,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:05:05,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020794358] [2020-04-17 22:05:05,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:05:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:05:06,035 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 22:05:06,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020794358] [2020-04-17 22:05:06,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:05:06,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:05:06,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082890167] [2020-04-17 22:05:06,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:05:06,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:05:06,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:05:06,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:05:06,038 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-04-17 22:05:06,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:05:06,045 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-04-17 22:05:06,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:05:06,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 22:05:06,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:05:06,047 INFO L225 Difference]: With dead ends: 144 [2020-04-17 22:05:06,047 INFO L226 Difference]: Without dead ends: 144 [2020-04-17 22:05:06,048 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:05:06,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-17 22:05:06,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-17 22:05:06,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-17 22:05:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-17 22:05:06,057 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-04-17 22:05:06,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:05:06,057 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-17 22:05:06,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:05:06,057 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-17 22:05:06,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:05:06,059 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:05:06,059 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:05:06,059 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:05:06,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:05:06,059 INFO L82 PathProgramCache]: Analyzing trace with hash 315672505, now seen corresponding path program 1 times [2020-04-17 22:05:06,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:05:06,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746609997] [2020-04-17 22:05:06,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:05:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:05:06,200 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 22:05:06,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746609997] [2020-04-17 22:05:06,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:05:06,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:05:06,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745144159] [2020-04-17 22:05:06,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:05:06,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:05:06,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:05:06,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:05:06,204 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-04-17 22:05:06,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:05:06,244 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-17 22:05:06,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:05:06,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 22:05:06,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:05:06,246 INFO L225 Difference]: With dead ends: 164 [2020-04-17 22:05:06,246 INFO L226 Difference]: Without dead ends: 124 [2020-04-17 22:05:06,246 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 22:05:06,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-17 22:05:06,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-17 22:05:06,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-17 22:05:06,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-17 22:05:06,253 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-17 22:05:06,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:05:06,254 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-17 22:05:06,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:05:06,254 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-17 22:05:06,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:05:06,255 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:05:06,255 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:05:06,256 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:05:06,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:05:06,256 INFO L82 PathProgramCache]: Analyzing trace with hash 852950147, now seen corresponding path program 1 times [2020-04-17 22:05:06,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:05:06,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714539647] [2020-04-17 22:05:06,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:05:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:05:06,368 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 22:05:06,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714539647] [2020-04-17 22:05:06,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:05:06,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:05:06,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547862711] [2020-04-17 22:05:06,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:05:06,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:05:06,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:05:06,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:05:06,371 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-04-17 22:05:06,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:05:06,421 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-17 22:05:06,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:05:06,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 22:05:06,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:05:06,424 INFO L225 Difference]: With dead ends: 122 [2020-04-17 22:05:06,424 INFO L226 Difference]: Without dead ends: 97 [2020-04-17 22:05:06,424 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:05:06,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-17 22:05:06,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-17 22:05:06,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-17 22:05:06,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-17 22:05:06,437 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-17 22:05:06,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:05:06,437 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-17 22:05:06,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:05:06,438 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-17 22:05:06,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:05:06,439 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:05:06,441 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:05:06,441 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:05:06,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:05:06,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1634628682, now seen corresponding path program 1 times [2020-04-17 22:05:06,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:05:06,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585388137] [2020-04-17 22:05:06,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:05:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:05:06,487 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 22:05:06,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585388137] [2020-04-17 22:05:06,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:05:06,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:05:06,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690731386] [2020-04-17 22:05:06,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:05:06,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:05:06,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:05:06,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:05:06,490 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-04-17 22:05:06,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:05:06,503 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-17 22:05:06,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:05:06,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-17 22:05:06,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:05:06,505 INFO L225 Difference]: With dead ends: 115 [2020-04-17 22:05:06,505 INFO L226 Difference]: Without dead ends: 98 [2020-04-17 22:05:06,506 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:05:06,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-17 22:05:06,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-17 22:05:06,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-17 22:05:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-17 22:05:06,516 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-17 22:05:06,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:05:06,517 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-17 22:05:06,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:05:06,517 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-17 22:05:06,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:05:06,518 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:05:06,518 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:05:06,518 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:05:06,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:05:06,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1887879687, now seen corresponding path program 1 times [2020-04-17 22:05:06,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:05:06,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119073376] [2020-04-17 22:05:06,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:05:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:05:06,636 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 22:05:06,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119073376] [2020-04-17 22:05:06,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:05:06,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:05:06,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845470612] [2020-04-17 22:05:06,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:05:06,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:05:06,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:05:06,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:05:06,638 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-04-17 22:05:06,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:05:06,713 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-04-17 22:05:06,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:05:06,714 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 22:05:06,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:05:06,715 INFO L225 Difference]: With dead ends: 92 [2020-04-17 22:05:06,715 INFO L226 Difference]: Without dead ends: 36 [2020-04-17 22:05:06,716 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:05:06,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-17 22:05:06,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-17 22:05:06,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-17 22:05:06,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-17 22:05:06,718 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-17 22:05:06,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:05:06,718 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-17 22:05:06,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:05:06,719 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-17 22:05:06,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:05:06,720 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:05:06,720 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 22:05:06,720 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:05:06,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:05:06,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1759545272, now seen corresponding path program 1 times [2020-04-17 22:05:06,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:05:06,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042716498] [2020-04-17 22:05:06,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:05:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:05:06,797 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 22:05:06,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042716498] [2020-04-17 22:05:06,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:05:06,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:05:06,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584091281] [2020-04-17 22:05:06,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:05:06,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:05:06,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:05:06,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:05:06,798 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-04-17 22:05:06,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:05:06,820 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-17 22:05:06,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:05:06,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:05:06,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:05:06,821 INFO L225 Difference]: With dead ends: 35 [2020-04-17 22:05:06,821 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:05:06,822 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 22:05:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:05:06,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:05:06,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:05:06,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:05:06,824 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 22:05:06,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:05:06,824 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:05:06,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:05:06,824 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:05:06,824 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:05:06,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:05:06 BasicIcfg [2020-04-17 22:05:06,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:05:06,836 INFO L168 Benchmark]: Toolchain (without parser) took 4955.37 ms. Allocated memory was 137.9 MB in the beginning and 250.6 MB in the end (delta: 112.7 MB). Free memory was 99.7 MB in the beginning and 170.6 MB in the end (delta: -70.9 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2020-04-17 22:05:06,837 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-17 22:05:06,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.42 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 97.6 MB in the beginning and 157.7 MB in the end (delta: -60.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:05:06,839 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.42 ms. Allocated memory is still 201.3 MB. Free memory was 157.7 MB in the beginning and 155.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:05:06,842 INFO L168 Benchmark]: Boogie Preprocessor took 26.23 ms. Allocated memory is still 201.3 MB. Free memory was 155.7 MB in the beginning and 154.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:05:06,843 INFO L168 Benchmark]: RCFGBuilder took 428.09 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 132.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:05:06,846 INFO L168 Benchmark]: TraceAbstraction took 3748.94 ms. Allocated memory was 201.3 MB in the beginning and 250.6 MB in the end (delta: 49.3 MB). Free memory was 131.6 MB in the beginning and 170.6 MB in the end (delta: -38.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:05:06,854 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 678.42 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 97.6 MB in the beginning and 157.7 MB in the end (delta: -60.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.42 ms. Allocated memory is still 201.3 MB. Free memory was 157.7 MB in the beginning and 155.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.23 ms. Allocated memory is still 201.3 MB. Free memory was 155.7 MB in the beginning and 154.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 428.09 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 132.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3748.94 ms. Allocated memory was 201.3 MB in the beginning and 250.6 MB in the end (delta: 49.3 MB). Free memory was 131.6 MB in the beginning and 170.6 MB in the end (delta: -38.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2190 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 145 SDtfs, 123 SDslu, 177 SDs, 0 SdLazy, 97 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3229 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...