/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 22:51:25,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 22:51:25,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 22:51:25,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 22:51:25,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 22:51:25,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 22:51:25,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 22:51:25,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 22:51:25,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 22:51:25,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 22:51:25,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 22:51:25,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 22:51:25,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 22:51:25,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 22:51:25,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 22:51:25,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 22:51:25,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 22:51:25,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 22:51:25,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 22:51:25,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 22:51:25,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 22:51:25,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 22:51:25,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 22:51:25,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 22:51:25,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-05 22:51:25,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-05 22:51:25,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-05 22:51:25,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-05 22:51:25,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-05 22:51:25,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-05 22:51:25,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 22:51:25,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 22:51:25,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 22:51:25,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 22:51:25,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 22:51:25,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 22:51:25,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 22:51:25,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 22:51:25,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 22:51:25,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 22:51:25,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 22:51:25,530 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-05 22:51:25,578 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 22:51:25,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 22:51:25,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 22:51:25,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 22:51:25,580 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 22:51:25,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 22:51:25,581 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 22:51:25,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 22:51:25,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 22:51:25,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 22:51:25,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 22:51:25,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 22:51:25,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 22:51:25,583 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 22:51:25,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 22:51:25,584 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 22:51:25,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 22:51:25,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 22:51:25,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 22:51:25,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 22:51:25,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 22:51:25,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:51:25,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 22:51:25,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 22:51:25,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 22:51:25,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 22:51:25,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 22:51:25,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 22:51:25,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 22:51:25,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 22:51:25,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 22:51:25,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 22:51:25,886 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 22:51:25,887 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 22:51:25,888 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 22:51:25,888 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2020-10-05 22:51:25,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b0cc9fbe/7e4ae15e25cb4cc0902f9dc3884aca4b/FLAGab0b9cb2a [2020-10-05 22:51:26,454 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 22:51:26,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2020-10-05 22:51:26,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b0cc9fbe/7e4ae15e25cb4cc0902f9dc3884aca4b/FLAGab0b9cb2a [2020-10-05 22:51:26,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b0cc9fbe/7e4ae15e25cb4cc0902f9dc3884aca4b [2020-10-05 22:51:26,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 22:51:26,781 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 22:51:26,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 22:51:26,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 22:51:26,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 22:51:26,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:51:26" (1/1) ... [2020-10-05 22:51:26,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73fa42a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:26, skipping insertion in model container [2020-10-05 22:51:26,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:51:26" (1/1) ... [2020-10-05 22:51:26,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 22:51:26,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 22:51:27,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:51:27,283 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 22:51:27,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:51:27,504 INFO L208 MainTranslator]: Completed translation [2020-10-05 22:51:27,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:27 WrapperNode [2020-10-05 22:51:27,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 22:51:27,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 22:51:27,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 22:51:27,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 22:51:27,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:27" (1/1) ... [2020-10-05 22:51:27,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:27" (1/1) ... [2020-10-05 22:51:27,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 22:51:27,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 22:51:27,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 22:51:27,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 22:51:27,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:27" (1/1) ... [2020-10-05 22:51:27,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:27" (1/1) ... [2020-10-05 22:51:27,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:27" (1/1) ... [2020-10-05 22:51:27,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:27" (1/1) ... [2020-10-05 22:51:27,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:27" (1/1) ... [2020-10-05 22:51:27,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:27" (1/1) ... [2020-10-05 22:51:27,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:27" (1/1) ... [2020-10-05 22:51:27,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 22:51:27,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 22:51:27,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 22:51:27,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 22:51:27,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:51:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 22:51:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 22:51:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 22:51:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 22:51:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-05 22:51:27,649 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-05 22:51:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-05 22:51:27,649 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-05 22:51:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-05 22:51:27,650 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-05 22:51:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 22:51:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 22:51:27,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 22:51:27,652 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 22:51:28,058 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 22:51:28,058 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-05 22:51:28,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:51:28 BoogieIcfgContainer [2020-10-05 22:51:28,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 22:51:28,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 22:51:28,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 22:51:28,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 22:51:28,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:51:26" (1/3) ... [2020-10-05 22:51:28,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5e7d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:51:28, skipping insertion in model container [2020-10-05 22:51:28,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:51:27" (2/3) ... [2020-10-05 22:51:28,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5e7d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:51:28, skipping insertion in model container [2020-10-05 22:51:28,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:51:28" (3/3) ... [2020-10-05 22:51:28,070 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2020-10-05 22:51:28,081 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 22:51:28,081 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 22:51:28,089 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 22:51:28,090 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 22:51:28,120 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,120 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,121 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,121 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,122 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,122 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,123 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,123 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,123 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,123 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,125 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,125 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,125 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,125 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,126 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,126 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,130 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,130 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,131 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,131 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,138 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,138 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,139 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,139 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,143 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,143 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,143 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,144 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:51:28,163 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 22:51:28,181 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 22:51:28,182 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 22:51:28,182 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 22:51:28,182 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 22:51:28,182 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 22:51:28,182 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 22:51:28,183 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 22:51:28,183 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 22:51:28,200 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-05 22:51:28,202 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-05 22:51:28,249 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-05 22:51:28,249 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:51:28,255 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. [2020-10-05 22:51:28,258 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-05 22:51:28,285 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-05 22:51:28,285 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:51:28,286 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. [2020-10-05 22:51:28,290 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-05 22:51:28,292 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 22:51:30,042 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-10-05 22:51:30,042 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-10-05 22:51:30,046 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-05 22:51:30,073 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-05 22:51:30,075 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-05 22:51:30,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:51:30,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:30,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:30,085 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:30,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:30,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-05 22:51:30,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:30,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677169410] [2020-10-05 22:51:30,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:30,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677169410] [2020-10-05 22:51:30,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:30,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:51:30,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941270022] [2020-10-05 22:51:30,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:51:30,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:30,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:51:30,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:30,369 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-05 22:51:30,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:30,423 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-05 22:51:30,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:51:30,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-05 22:51:30,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:30,442 INFO L225 Difference]: With dead ends: 282 [2020-10-05 22:51:30,443 INFO L226 Difference]: Without dead ends: 218 [2020-10-05 22:51:30,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:30,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-05 22:51:30,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-05 22:51:30,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-05 22:51:30,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-05 22:51:30,518 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-05 22:51:30,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:30,520 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-05 22:51:30,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:51:30,520 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-05 22:51:30,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:51:30,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:30,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:30,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 22:51:30,524 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:30,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:30,525 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-10-05 22:51:30,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:30,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054992490] [2020-10-05 22:51:30,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:30,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054992490] [2020-10-05 22:51:30,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:30,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:51:30,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772717744] [2020-10-05 22:51:30,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:51:30,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:30,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:51:30,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:30,605 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-05 22:51:30,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:30,638 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-05 22:51:30,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:51:30,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-05 22:51:30,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:30,642 INFO L225 Difference]: With dead ends: 202 [2020-10-05 22:51:30,642 INFO L226 Difference]: Without dead ends: 202 [2020-10-05 22:51:30,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:30,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-05 22:51:30,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-05 22:51:30,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-05 22:51:30,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-05 22:51:30,664 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-05 22:51:30,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:30,664 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-05 22:51:30,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:51:30,665 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-05 22:51:30,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:51:30,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:30,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:30,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 22:51:30,667 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:30,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:30,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-10-05 22:51:30,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:30,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523582353] [2020-10-05 22:51:30,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:30,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523582353] [2020-10-05 22:51:30,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:30,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:51:30,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078247701] [2020-10-05 22:51:30,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:51:30,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:30,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:51:30,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:30,746 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-05 22:51:30,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:30,769 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-10-05 22:51:30,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:51:30,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-05 22:51:30,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:30,773 INFO L225 Difference]: With dead ends: 194 [2020-10-05 22:51:30,773 INFO L226 Difference]: Without dead ends: 194 [2020-10-05 22:51:30,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:51:30,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-05 22:51:30,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-05 22:51:30,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-05 22:51:30,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-10-05 22:51:30,803 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-10-05 22:51:30,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:30,804 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-10-05 22:51:30,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:51:30,804 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-10-05 22:51:30,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:51:30,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:30,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:30,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 22:51:30,812 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:30,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:30,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-10-05 22:51:30,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:30,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506457711] [2020-10-05 22:51:30,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:30,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506457711] [2020-10-05 22:51:30,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:30,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:51:30,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838280536] [2020-10-05 22:51:30,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:51:30,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:30,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:51:30,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:51:30,908 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-10-05 22:51:30,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:30,944 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-10-05 22:51:30,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:51:30,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-05 22:51:30,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:30,947 INFO L225 Difference]: With dead ends: 225 [2020-10-05 22:51:30,947 INFO L226 Difference]: Without dead ends: 161 [2020-10-05 22:51:30,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:51:30,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-05 22:51:30,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-10-05 22:51:30,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-05 22:51:30,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-10-05 22:51:30,971 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-10-05 22:51:30,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:30,971 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-10-05 22:51:30,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:51:30,971 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-10-05 22:51:30,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:51:30,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:30,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:30,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 22:51:30,974 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:30,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:30,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-10-05 22:51:30,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:30,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564471668] [2020-10-05 22:51:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:31,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564471668] [2020-10-05 22:51:31,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:31,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:51:31,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19115993] [2020-10-05 22:51:31,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:51:31,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:31,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:51:31,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:51:31,027 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 5 states. [2020-10-05 22:51:31,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:31,070 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-10-05 22:51:31,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:51:31,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-05 22:51:31,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:31,072 INFO L225 Difference]: With dead ends: 160 [2020-10-05 22:51:31,072 INFO L226 Difference]: Without dead ends: 123 [2020-10-05 22:51:31,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:51:31,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-05 22:51:31,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-10-05 22:51:31,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-05 22:51:31,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-10-05 22:51:31,079 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-10-05 22:51:31,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:31,079 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-10-05 22:51:31,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:51:31,080 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-10-05 22:51:31,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:51:31,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:31,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:31,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 22:51:31,082 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:31,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:31,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-10-05 22:51:31,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:31,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722545425] [2020-10-05 22:51:31,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:31,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722545425] [2020-10-05 22:51:31,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:31,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:51:31,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666583317] [2020-10-05 22:51:31,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:51:31,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:31,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:51:31,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:51:31,144 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-10-05 22:51:31,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:31,198 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-10-05 22:51:31,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:51:31,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-05 22:51:31,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:31,200 INFO L225 Difference]: With dead ends: 118 [2020-10-05 22:51:31,200 INFO L226 Difference]: Without dead ends: 108 [2020-10-05 22:51:31,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-05 22:51:31,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-05 22:51:31,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-05 22:51:31,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-05 22:51:31,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-10-05 22:51:31,206 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-10-05 22:51:31,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:31,206 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-10-05 22:51:31,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:51:31,206 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-10-05 22:51:31,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:51:31,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:31,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:31,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 22:51:31,208 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:31,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:31,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-10-05 22:51:31,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:31,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765444555] [2020-10-05 22:51:31,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:31,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765444555] [2020-10-05 22:51:31,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:31,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:51:31,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492790230] [2020-10-05 22:51:31,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:51:31,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:31,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:51:31,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:51:31,248 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-10-05 22:51:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:31,262 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-10-05 22:51:31,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:51:31,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-05 22:51:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:31,263 INFO L225 Difference]: With dead ends: 133 [2020-10-05 22:51:31,263 INFO L226 Difference]: Without dead ends: 54 [2020-10-05 22:51:31,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:51:31,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-05 22:51:31,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-05 22:51:31,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-05 22:51:31,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-10-05 22:51:31,266 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-10-05 22:51:31,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:31,267 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-10-05 22:51:31,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:51:31,267 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-10-05 22:51:31,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:51:31,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:31,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:31,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 22:51:31,268 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:31,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:31,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-10-05 22:51:31,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:31,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807315541] [2020-10-05 22:51:31,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:31,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807315541] [2020-10-05 22:51:31,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:31,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:51:31,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373966547] [2020-10-05 22:51:31,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:51:31,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:31,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:51:31,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:51:31,314 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-10-05 22:51:31,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:31,331 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-10-05 22:51:31,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:51:31,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-05 22:51:31,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:31,332 INFO L225 Difference]: With dead ends: 63 [2020-10-05 22:51:31,333 INFO L226 Difference]: Without dead ends: 38 [2020-10-05 22:51:31,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:51:31,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-05 22:51:31,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-05 22:51:31,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-05 22:51:31,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-10-05 22:51:31,335 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-10-05 22:51:31,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:31,336 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-10-05 22:51:31,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:51:31,336 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-10-05 22:51:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:51:31,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:31,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:31,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 22:51:31,337 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:31,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:31,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-10-05 22:51:31,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:31,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920570463] [2020-10-05 22:51:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:31,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920570463] [2020-10-05 22:51:31,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:31,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:51:31,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968812054] [2020-10-05 22:51:31,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:51:31,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:31,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:51:31,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:51:31,376 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-10-05 22:51:31,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:31,392 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-10-05 22:51:31,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:51:31,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-05 22:51:31,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:31,393 INFO L225 Difference]: With dead ends: 56 [2020-10-05 22:51:31,393 INFO L226 Difference]: Without dead ends: 35 [2020-10-05 22:51:31,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:51:31,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-05 22:51:31,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-05 22:51:31,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-05 22:51:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-10-05 22:51:31,396 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-10-05 22:51:31,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:31,396 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-10-05 22:51:31,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:51:31,396 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-10-05 22:51:31,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:51:31,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:51:31,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:51:31,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 22:51:31,397 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:51:31,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:51:31,398 INFO L82 PathProgramCache]: Analyzing trace with hash -828702424, now seen corresponding path program 4 times [2020-10-05 22:51:31,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:51:31,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275829927] [2020-10-05 22:51:31,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:51:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:51:31,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:51:31,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275829927] [2020-10-05 22:51:31,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:51:31,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:51:31,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874950255] [2020-10-05 22:51:31,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:51:31,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:51:31,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:51:31,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:51:31,436 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-10-05 22:51:31,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:51:31,450 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-10-05 22:51:31,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:51:31,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-05 22:51:31,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:51:31,451 INFO L225 Difference]: With dead ends: 34 [2020-10-05 22:51:31,451 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 22:51:31,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:51:31,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 22:51:31,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 22:51:31,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 22:51:31,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 22:51:31,452 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-05 22:51:31,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:51:31,452 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 22:51:31,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:51:31,453 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 22:51:31,453 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 22:51:31,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 22:51:31,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:51:31 BasicIcfg [2020-10-05 22:51:31,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 22:51:31,460 INFO L168 Benchmark]: Toolchain (without parser) took 4678.05 ms. Allocated memory was 140.0 MB in the beginning and 248.0 MB in the end (delta: 108.0 MB). Free memory was 102.3 MB in the beginning and 140.1 MB in the end (delta: -37.8 MB). Peak memory consumption was 70.2 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:31,461 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-05 22:51:31,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.36 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 162.3 MB in the end (delta: -60.4 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:31,463 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.40 ms. Allocated memory is still 203.4 MB. Free memory was 162.3 MB in the beginning and 159.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:31,464 INFO L168 Benchmark]: Boogie Preprocessor took 28.25 ms. Allocated memory is still 203.4 MB. Free memory was 159.6 MB in the beginning and 158.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:31,465 INFO L168 Benchmark]: RCFGBuilder took 479.57 ms. Allocated memory is still 203.4 MB. Free memory was 158.3 MB in the beginning and 136.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:31,466 INFO L168 Benchmark]: TraceAbstraction took 3394.69 ms. Allocated memory was 203.4 MB in the beginning and 248.0 MB in the end (delta: 44.6 MB). Free memory was 135.7 MB in the beginning and 140.1 MB in the end (delta: -4.4 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. [2020-10-05 22:51:31,470 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 723.36 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 162.3 MB in the end (delta: -60.4 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.40 ms. Allocated memory is still 203.4 MB. Free memory was 162.3 MB in the beginning and 159.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.25 ms. Allocated memory is still 203.4 MB. Free memory was 159.6 MB in the beginning and 158.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.57 ms. Allocated memory is still 203.4 MB. Free memory was 158.3 MB in the beginning and 136.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3394.69 ms. Allocated memory was 203.4 MB in the beginning and 248.0 MB in the end (delta: 44.6 MB). Free memory was 135.7 MB in the beginning and 140.1 MB in the end (delta: -4.4 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 672 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2768 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: 3.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 205 SDtfs, 151 SDslu, 247 SDs, 0 SdLazy, 129 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s 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, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4232 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...