/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:32:16,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:32:16,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:32:16,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:32:16,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:32:16,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:32:16,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:32:16,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:32:16,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:32:16,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:32:16,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:32:16,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:32:16,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:32:16,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:32:16,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:32:16,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:32:16,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:32:16,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:32:16,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:32:16,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:32:16,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:32:16,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:32:16,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:32:16,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:32:16,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:32:16,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:32:16,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:32:16,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:32:16,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:32:16,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:32:16,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:32:16,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:32:16,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:32:16,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:32:16,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:32:16,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:32:16,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:32:16,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:32:16,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:32:16,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:32:16,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:32:16,514 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-VariableLbe.epf [2020-04-18 02:32:16,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:32:16,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:32:16,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:32:16,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:32:16,531 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:32:16,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:32:16,532 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:32:16,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:32:16,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:32:16,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:32:16,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:32:16,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:32:16,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:32:16,533 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:32:16,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:32:16,533 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:32:16,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:32:16,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:32:16,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:32:16,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:32:16,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:32:16,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:32:16,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:32:16,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:32:16,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:32:16,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:32:16,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:32:16,536 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:32:16,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:32:16,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:32:16,846 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:32:16,858 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:32:16,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:32:16,864 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:32:16,864 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:32:16,865 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-04-18 02:32:16,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b90455bc/9410d6b86bb74fbcb513ae77439b3b2e/FLAG767c898d9 [2020-04-18 02:32:17,467 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:32:17,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-04-18 02:32:17,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b90455bc/9410d6b86bb74fbcb513ae77439b3b2e/FLAG767c898d9 [2020-04-18 02:32:17,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b90455bc/9410d6b86bb74fbcb513ae77439b3b2e [2020-04-18 02:32:17,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:32:17,797 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:32:17,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:32:17,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:32:17,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:32:17,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:32:17" (1/1) ... [2020-04-18 02:32:17,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34792190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:17, skipping insertion in model container [2020-04-18 02:32:17,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:32:17" (1/1) ... [2020-04-18 02:32:17,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:32:17,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:32:18,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:32:18,386 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:32:18,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:32:18,547 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:32:18,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:18 WrapperNode [2020-04-18 02:32:18,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:32:18,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:32:18,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:32:18,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:32:18,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:18" (1/1) ... [2020-04-18 02:32:18,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:18" (1/1) ... [2020-04-18 02:32:18,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:32:18,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:32:18,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:32:18,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:32:18,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:18" (1/1) ... [2020-04-18 02:32:18,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:18" (1/1) ... [2020-04-18 02:32:18,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:18" (1/1) ... [2020-04-18 02:32:18,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:18" (1/1) ... [2020-04-18 02:32:18,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:18" (1/1) ... [2020-04-18 02:32:18,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:18" (1/1) ... [2020-04-18 02:32:18,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:18" (1/1) ... [2020-04-18 02:32:18,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:32:18,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:32:18,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:32:18,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:32:18,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:18" (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 [2020-04-18 02:32:18,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:32:18,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:32:18,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:32:18,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:32:18,696 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:32:18,696 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:32:18,696 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:32:18,696 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:32:18,696 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:32:18,697 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:32:18,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:32:18,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:32:18,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:32:18,699 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:32:19,123 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:32:19,123 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:32:19,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:32:19 BoogieIcfgContainer [2020-04-18 02:32:19,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:32:19,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:32:19,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:32:19,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:32:19,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:32:17" (1/3) ... [2020-04-18 02:32:19,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66980913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:32:19, skipping insertion in model container [2020-04-18 02:32:19,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:32:18" (2/3) ... [2020-04-18 02:32:19,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66980913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:32:19, skipping insertion in model container [2020-04-18 02:32:19,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:32:19" (3/3) ... [2020-04-18 02:32:19,137 INFO L109 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2020-04-18 02:32:19,148 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:32:19,148 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:32:19,155 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:32:19,157 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:32:19,181 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,181 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,182 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,182 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,182 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,183 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,183 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,184 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,184 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,184 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,185 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,185 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,185 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,186 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,186 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,186 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,187 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,187 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,191 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,192 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,192 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,192 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,200 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,200 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,200 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,201 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,210 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,210 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,211 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,211 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:32:19,234 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:32:19,252 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:32:19,253 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:32:19,253 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:32:19,253 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:32:19,253 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:32:19,253 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:32:19,253 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:32:19,254 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:32:19,270 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:32:19,272 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:32:19,319 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:32:19,320 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:32:19,325 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 46 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. [2020-04-18 02:32:19,328 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:32:19,367 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:32:19,368 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:32:19,368 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 46 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. [2020-04-18 02:32:19,371 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:32:19,373 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:32:20,832 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2250 [2020-04-18 02:32:20,832 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-04-18 02:32:20,837 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 02:32:20,865 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 02:32:20,867 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 02:32:20,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:32:20,877 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:32:20,878 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:32:20,879 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:32:20,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:32:20,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-04-18 02:32:20,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:32:20,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322932435] [2020-04-18 02:32:20,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:32:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:32:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:32:21,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322932435] [2020-04-18 02:32:21,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:32:21,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:32:21,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065906559] [2020-04-18 02:32:21,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 02:32:21,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:32:21,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 02:32:21,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:32:21,111 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 02:32:21,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:32:21,143 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 02:32:21,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 02:32:21,145 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 02:32:21,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:32:21,163 INFO L225 Difference]: With dead ends: 362 [2020-04-18 02:32:21,164 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 02:32:21,165 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 [2020-04-18 02:32:21,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 02:32:21,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 02:32:21,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 02:32:21,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 02:32:21,241 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 02:32:21,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:32:21,242 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 02:32:21,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 02:32:21,243 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 02:32:21,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:32:21,244 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:32:21,244 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:32:21,245 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:32:21,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:32:21,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-04-18 02:32:21,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:32:21,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140631226] [2020-04-18 02:32:21,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:32:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:32:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:32:21,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140631226] [2020-04-18 02:32:21,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:32:21,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:32:21,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568846114] [2020-04-18 02:32:21,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:32:21,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:32:21,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:32:21,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:32:21,387 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-18 02:32:21,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:32:21,460 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-18 02:32:21,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:32:21,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:32:21,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:32:21,466 INFO L225 Difference]: With dead ends: 330 [2020-04-18 02:32:21,467 INFO L226 Difference]: Without dead ends: 266 [2020-04-18 02:32:21,468 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 [2020-04-18 02:32:21,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-18 02:32:21,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-18 02:32:21,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-18 02:32:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-18 02:32:21,493 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-18 02:32:21,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:32:21,494 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-18 02:32:21,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:32:21,494 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-18 02:32:21,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:32:21,497 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:32:21,498 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:32:21,498 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:32:21,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:32:21,498 INFO L82 PathProgramCache]: Analyzing trace with hash -397698604, now seen corresponding path program 1 times [2020-04-18 02:32:21,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:32:21,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898205765] [2020-04-18 02:32:21,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:32:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:32:21,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:32:21,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898205765] [2020-04-18 02:32:21,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:32:21,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:32:21,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936300609] [2020-04-18 02:32:21,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:32:21,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:32:21,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:32:21,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:32:21,607 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-04-18 02:32:21,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:32:21,674 INFO L93 Difference]: Finished difference Result 314 states and 856 transitions. [2020-04-18 02:32:21,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:32:21,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 02:32:21,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:32:21,679 INFO L225 Difference]: With dead ends: 314 [2020-04-18 02:32:21,679 INFO L226 Difference]: Without dead ends: 170 [2020-04-18 02:32:21,681 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 [2020-04-18 02:32:21,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-04-18 02:32:21,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-04-18 02:32:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-18 02:32:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2020-04-18 02:32:21,698 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 10 [2020-04-18 02:32:21,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:32:21,698 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2020-04-18 02:32:21,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:32:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2020-04-18 02:32:21,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:32:21,700 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:32:21,700 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:32:21,700 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:32:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:32:21,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1820296279, now seen corresponding path program 1 times [2020-04-18 02:32:21,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:32:21,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472349665] [2020-04-18 02:32:21,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:32:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:32:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:32:21,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472349665] [2020-04-18 02:32:21,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:32:21,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:32:21,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249744085] [2020-04-18 02:32:21,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:32:21,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:32:21,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:32:21,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:32:21,815 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand 4 states. [2020-04-18 02:32:21,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:32:21,851 INFO L93 Difference]: Finished difference Result 183 states and 423 transitions. [2020-04-18 02:32:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:32:21,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:32:21,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:32:21,853 INFO L225 Difference]: With dead ends: 183 [2020-04-18 02:32:21,853 INFO L226 Difference]: Without dead ends: 143 [2020-04-18 02:32:21,853 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 [2020-04-18 02:32:21,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-04-18 02:32:21,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-04-18 02:32:21,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-04-18 02:32:21,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 330 transitions. [2020-04-18 02:32:21,862 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 330 transitions. Word has length 12 [2020-04-18 02:32:21,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:32:21,862 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 330 transitions. [2020-04-18 02:32:21,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:32:21,863 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 330 transitions. [2020-04-18 02:32:21,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:32:21,864 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:32:21,864 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:32:21,864 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:32:21,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:32:21,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1114555336, now seen corresponding path program 1 times [2020-04-18 02:32:21,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:32:21,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460367511] [2020-04-18 02:32:21,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:32:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:32:21,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:32:21,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460367511] [2020-04-18 02:32:21,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:32:21,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:32:21,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073328884] [2020-04-18 02:32:21,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:32:21,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:32:21,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:32:21,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:32:21,918 INFO L87 Difference]: Start difference. First operand 143 states and 330 transitions. Second operand 5 states. [2020-04-18 02:32:21,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:32:21,960 INFO L93 Difference]: Finished difference Result 129 states and 271 transitions. [2020-04-18 02:32:21,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:32:21,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-18 02:32:21,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:32:21,962 INFO L225 Difference]: With dead ends: 129 [2020-04-18 02:32:21,962 INFO L226 Difference]: Without dead ends: 104 [2020-04-18 02:32:21,963 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 [2020-04-18 02:32:21,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-04-18 02:32:21,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-04-18 02:32:21,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-04-18 02:32:21,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 215 transitions. [2020-04-18 02:32:21,968 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 215 transitions. Word has length 13 [2020-04-18 02:32:21,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:32:21,968 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 215 transitions. [2020-04-18 02:32:21,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:32:21,968 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 215 transitions. [2020-04-18 02:32:21,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:32:21,969 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:32:21,970 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:32:21,970 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:32:21,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:32:21,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1420096236, now seen corresponding path program 1 times [2020-04-18 02:32:21,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:32:21,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115716282] [2020-04-18 02:32:21,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:32:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:32:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:32:22,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115716282] [2020-04-18 02:32:22,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:32:22,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 02:32:22,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494459325] [2020-04-18 02:32:22,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:32:22,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:32:22,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:32:22,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:32:22,042 INFO L87 Difference]: Start difference. First operand 104 states and 215 transitions. Second operand 6 states. [2020-04-18 02:32:22,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:32:22,089 INFO L93 Difference]: Finished difference Result 93 states and 191 transitions. [2020-04-18 02:32:22,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:32:22,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:32:22,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:32:22,092 INFO L225 Difference]: With dead ends: 93 [2020-04-18 02:32:22,092 INFO L226 Difference]: Without dead ends: 85 [2020-04-18 02:32:22,093 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 [2020-04-18 02:32:22,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-04-18 02:32:22,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-04-18 02:32:22,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-04-18 02:32:22,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2020-04-18 02:32:22,097 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 15 [2020-04-18 02:32:22,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:32:22,097 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2020-04-18 02:32:22,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:32:22,098 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2020-04-18 02:32:22,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 02:32:22,102 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:32:22,102 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:32:22,102 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:32:22,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:32:22,103 INFO L82 PathProgramCache]: Analyzing trace with hash -572692364, now seen corresponding path program 1 times [2020-04-18 02:32:22,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:32:22,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674687703] [2020-04-18 02:32:22,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:32:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:32:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:32:22,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674687703] [2020-04-18 02:32:22,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:32:22,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:32:22,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518142587] [2020-04-18 02:32:22,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:32:22,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:32:22,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:32:22,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:32:22,213 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand 4 states. [2020-04-18 02:32:22,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:32:22,235 INFO L93 Difference]: Finished difference Result 117 states and 236 transitions. [2020-04-18 02:32:22,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:32:22,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-04-18 02:32:22,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:32:22,237 INFO L225 Difference]: With dead ends: 117 [2020-04-18 02:32:22,237 INFO L226 Difference]: Without dead ends: 55 [2020-04-18 02:32:22,237 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 [2020-04-18 02:32:22,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-04-18 02:32:22,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-04-18 02:32:22,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-04-18 02:32:22,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-04-18 02:32:22,241 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-04-18 02:32:22,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:32:22,242 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-04-18 02:32:22,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:32:22,242 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-04-18 02:32:22,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 02:32:22,242 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:32:22,243 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:32:22,243 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:32:22,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:32:22,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1123595488, now seen corresponding path program 2 times [2020-04-18 02:32:22,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:32:22,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323685746] [2020-04-18 02:32:22,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:32:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:32:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:32:22,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323685746] [2020-04-18 02:32:22,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:32:22,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:32:22,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632040200] [2020-04-18 02:32:22,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:32:22,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:32:22,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:32:22,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:32:22,354 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-04-18 02:32:22,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:32:22,389 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-04-18 02:32:22,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:32:22,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-18 02:32:22,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:32:22,390 INFO L225 Difference]: With dead ends: 54 [2020-04-18 02:32:22,390 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:32:22,390 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 [2020-04-18 02:32:22,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:32:22,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:32:22,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:32:22,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:32:22,397 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 02:32:22,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:32:22,397 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:32:22,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:32:22,397 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:32:22,398 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:32:22,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:32:22 BasicIcfg [2020-04-18 02:32:22,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:32:22,410 INFO L168 Benchmark]: Toolchain (without parser) took 4624.94 ms. Allocated memory was 135.8 MB in the beginning and 253.2 MB in the end (delta: 117.4 MB). Free memory was 99.6 MB in the beginning and 104.6 MB in the end (delta: -4.9 MB). Peak memory consumption was 112.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:32:22,411 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 02:32:22,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.85 ms. Allocated memory was 135.8 MB in the beginning and 199.2 MB in the end (delta: 63.4 MB). Free memory was 97.6 MB in the beginning and 156.4 MB in the end (delta: -58.9 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:32:22,416 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.00 ms. Allocated memory is still 199.2 MB. Free memory was 156.4 MB in the beginning and 154.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:32:22,416 INFO L168 Benchmark]: Boogie Preprocessor took 27.09 ms. Allocated memory is still 199.2 MB. Free memory was 154.3 MB in the beginning and 152.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:32:22,417 INFO L168 Benchmark]: RCFGBuilder took 503.55 ms. Allocated memory is still 199.2 MB. Free memory was 152.2 MB in the beginning and 130.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:32:22,423 INFO L168 Benchmark]: TraceAbstraction took 3273.70 ms. Allocated memory was 199.2 MB in the beginning and 253.2 MB in the end (delta: 54.0 MB). Free memory was 130.0 MB in the beginning and 104.6 MB in the end (delta: 25.4 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:32:22,432 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 749.85 ms. Allocated memory was 135.8 MB in the beginning and 199.2 MB in the end (delta: 63.4 MB). Free memory was 97.6 MB in the beginning and 156.4 MB in the end (delta: -58.9 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.00 ms. Allocated memory is still 199.2 MB. Free memory was 156.4 MB in the beginning and 154.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.09 ms. Allocated memory is still 199.2 MB. Free memory was 154.3 MB in the beginning and 152.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 503.55 ms. Allocated memory is still 199.2 MB. Free memory was 152.2 MB in the beginning and 130.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3273.70 ms. Allocated memory was 199.2 MB in the beginning and 253.2 MB in the end (delta: 54.0 MB). Free memory was 130.0 MB in the beginning and 104.6 MB in the end (delta: 25.4 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 78 ProgramPointsBefore, 32 ProgramPointsAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 635 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2250 CheckedPairsTotal, 55 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: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 175 SDtfs, 173 SDslu, 270 SDs, 0 SdLazy, 104 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 3187 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...