/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/thin002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 18:24:29,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 18:24:29,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 18:24:29,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 18:24:29,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 18:24:29,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 18:24:29,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 18:24:29,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 18:24:29,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 18:24:29,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 18:24:29,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 18:24:29,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 18:24:29,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 18:24:29,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 18:24:29,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 18:24:29,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 18:24:29,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 18:24:29,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 18:24:29,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 18:24:29,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 18:24:29,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 18:24:29,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 18:24:29,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 18:24:29,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 18:24:29,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 18:24:29,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 18:24:29,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 18:24:29,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 18:24:29,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 18:24:29,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 18:24:29,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 18:24:29,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 18:24:29,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 18:24:29,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 18:24:29,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 18:24:29,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 18:24:29,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 18:24:29,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 18:24:29,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 18:24:29,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 18:24:29,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 18:24:29,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 18:24:29,523 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 18:24:29,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 18:24:29,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 18:24:29,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 18:24:29,525 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 18:24:29,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 18:24:29,526 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 18:24:29,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 18:24:29,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 18:24:29,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 18:24:29,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 18:24:29,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 18:24:29,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 18:24:29,531 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 18:24:29,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 18:24:29,532 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 18:24:29,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 18:24:29,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 18:24:29,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 18:24:29,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 18:24:29,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 18:24:29,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 18:24:29,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 18:24:29,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 18:24:29,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 18:24:29,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 18:24:29,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 18:24:29,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 18:24:29,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 18:24:29,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 18:24:29,834 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 18:24:29,847 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 18:24:29,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 18:24:29,852 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 18:24:29,853 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 18:24:29,853 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-04-17 18:24:29,910 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b0ae6a4c/505ad10ad6df43debae08c8449327f86/FLAG0a9f0c0a7 [2020-04-17 18:24:30,450 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 18:24:30,450 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-04-17 18:24:30,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b0ae6a4c/505ad10ad6df43debae08c8449327f86/FLAG0a9f0c0a7 [2020-04-17 18:24:30,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b0ae6a4c/505ad10ad6df43debae08c8449327f86 [2020-04-17 18:24:30,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 18:24:30,816 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 18:24:30,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 18:24:30,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 18:24:30,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 18:24:30,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:24:30" (1/1) ... [2020-04-17 18:24:30,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ea521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:24:30, skipping insertion in model container [2020-04-17 18:24:30,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 06:24:30" (1/1) ... [2020-04-17 18:24:30,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 18:24:30,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 18:24:31,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:24:31,397 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 18:24:31,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 18:24:31,557 INFO L208 MainTranslator]: Completed translation [2020-04-17 18:24:31,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:24:31 WrapperNode [2020-04-17 18:24:31,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 18:24:31,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 18:24:31,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 18:24:31,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 18:24:31,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:24:31" (1/1) ... [2020-04-17 18:24:31,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:24:31" (1/1) ... [2020-04-17 18:24:31,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 18:24:31,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 18:24:31,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 18:24:31,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 18:24:31,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:24:31" (1/1) ... [2020-04-17 18:24:31,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:24:31" (1/1) ... [2020-04-17 18:24:31,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:24:31" (1/1) ... [2020-04-17 18:24:31,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:24:31" (1/1) ... [2020-04-17 18:24:31,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:24:31" (1/1) ... [2020-04-17 18:24:31,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:24:31" (1/1) ... [2020-04-17 18:24:31,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:24:31" (1/1) ... [2020-04-17 18:24:31,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 18:24:31,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 18:24:31,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 18:24:31,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 18:24:31,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:24:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 18:24:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 18:24:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 18:24:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 18:24:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 18:24:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 18:24:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 18:24:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 18:24:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 18:24:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 18:24:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 18:24:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-17 18:24:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-17 18:24:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 18:24:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 18:24:31,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 18:24:31,716 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 18:24:32,121 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 18:24:32,122 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 18:24:32,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:24:32 BoogieIcfgContainer [2020-04-17 18:24:32,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 18:24:32,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 18:24:32,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 18:24:32,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 18:24:32,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 06:24:30" (1/3) ... [2020-04-17 18:24:32,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48af66c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:24:32, skipping insertion in model container [2020-04-17 18:24:32,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 06:24:31" (2/3) ... [2020-04-17 18:24:32,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48af66c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 06:24:32, skipping insertion in model container [2020-04-17 18:24:32,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 06:24:32" (3/3) ... [2020-04-17 18:24:32,140 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_tso.oepc.i [2020-04-17 18:24:32,150 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 18:24:32,150 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 18:24:32,156 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 18:24:32,157 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 18:24:32,187 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,187 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,188 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,188 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,189 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,189 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,190 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,190 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,190 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,191 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,191 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,191 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,192 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,192 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,192 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,193 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,193 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,193 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,194 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,194 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,194 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,195 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,195 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,196 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,200 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,201 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,201 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,201 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,207 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,208 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,208 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,208 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,218 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,218 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,218 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,219 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,222 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,222 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,222 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,223 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 18:24:32,241 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-17 18:24:32,262 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 18:24:32,262 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 18:24:32,262 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 18:24:32,263 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 18:24:32,263 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 18:24:32,263 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 18:24:32,263 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 18:24:32,263 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 18:24:32,279 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-04-17 18:24:32,280 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-17 18:24:32,333 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-17 18:24:32,334 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:24:32,341 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-17 18:24:32,348 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-17 18:24:32,376 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-17 18:24:32,376 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 18:24:32,377 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-17 18:24:32,381 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-04-17 18:24:32,382 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 18:24:34,366 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-04-17 18:24:34,442 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-04-17 18:24:34,443 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-04-17 18:24:34,447 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-04-17 18:24:34,560 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-04-17 18:24:34,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-04-17 18:24:34,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 18:24:34,574 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:24:34,575 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:24:34,576 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:24:34,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:24:34,582 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-04-17 18:24:34,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:24:34,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816545145] [2020-04-17 18:24:34,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:24:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:24:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:24:34,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816545145] [2020-04-17 18:24:34,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:24:34,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:24:34,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684778731] [2020-04-17 18:24:34,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 18:24:34,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:24:34,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 18:24:34,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 18:24:34,815 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-04-17 18:24:34,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:24:34,882 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-04-17 18:24:34,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 18:24:34,883 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-17 18:24:34,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:24:34,936 INFO L225 Difference]: With dead ends: 1450 [2020-04-17 18:24:34,936 INFO L226 Difference]: Without dead ends: 1194 [2020-04-17 18:24:34,938 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 18:24:34,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-04-17 18:24:35,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-04-17 18:24:35,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-04-17 18:24:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-04-17 18:24:35,090 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-04-17 18:24:35,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:24:35,091 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-04-17 18:24:35,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 18:24:35,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-04-17 18:24:35,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 18:24:35,094 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:24:35,094 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:24:35,094 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:24:35,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:24:35,095 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-04-17 18:24:35,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:24:35,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654488294] [2020-04-17 18:24:35,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:24:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:24:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:24:35,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654488294] [2020-04-17 18:24:35,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:24:35,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:24:35,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385513564] [2020-04-17 18:24:35,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:24:35,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:24:35,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:24:35,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:24:35,275 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-04-17 18:24:35,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:24:35,321 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-04-17 18:24:35,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:24:35,322 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 18:24:35,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:24:35,332 INFO L225 Difference]: With dead ends: 1322 [2020-04-17 18:24:35,332 INFO L226 Difference]: Without dead ends: 1066 [2020-04-17 18:24:35,333 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:24:35,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-04-17 18:24:35,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-04-17 18:24:35,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-04-17 18:24:35,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-04-17 18:24:35,374 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-04-17 18:24:35,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:24:35,375 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-04-17 18:24:35,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:24:35,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-04-17 18:24:35,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 18:24:35,378 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:24:35,378 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:24:35,378 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:24:35,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:24:35,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1585408540, now seen corresponding path program 1 times [2020-04-17 18:24:35,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:24:35,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455324885] [2020-04-17 18:24:35,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:24:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:24:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:24:35,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455324885] [2020-04-17 18:24:35,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:24:35,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:24:35,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079206899] [2020-04-17 18:24:35,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:24:35,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:24:35,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:24:35,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:24:35,467 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-04-17 18:24:35,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:24:35,503 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-04-17 18:24:35,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:24:35,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 18:24:35,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:24:35,512 INFO L225 Difference]: With dead ends: 1162 [2020-04-17 18:24:35,513 INFO L226 Difference]: Without dead ends: 970 [2020-04-17 18:24:35,513 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:24:35,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-04-17 18:24:35,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-04-17 18:24:35,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-04-17 18:24:35,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-04-17 18:24:35,550 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-04-17 18:24:35,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:24:35,550 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-04-17 18:24:35,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:24:35,550 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-04-17 18:24:35,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 18:24:35,552 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:24:35,552 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:24:35,553 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:24:35,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:24:35,553 INFO L82 PathProgramCache]: Analyzing trace with hash -333651602, now seen corresponding path program 1 times [2020-04-17 18:24:35,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:24:35,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356661391] [2020-04-17 18:24:35,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:24:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:24:35,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:24:35,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356661391] [2020-04-17 18:24:35,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:24:35,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:24:35,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198196423] [2020-04-17 18:24:35,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:24:35,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:24:35,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:24:35,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:24:35,629 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 4 states. [2020-04-17 18:24:35,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:24:35,660 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-04-17 18:24:35,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:24:35,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 18:24:35,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:24:35,669 INFO L225 Difference]: With dead ends: 1042 [2020-04-17 18:24:35,669 INFO L226 Difference]: Without dead ends: 898 [2020-04-17 18:24:35,670 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:24:35,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-04-17 18:24:35,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-04-17 18:24:35,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-04-17 18:24:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-04-17 18:24:35,736 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-04-17 18:24:35,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:24:35,736 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-04-17 18:24:35,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:24:35,736 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-04-17 18:24:35,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 18:24:35,738 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:24:35,738 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:24:35,738 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:24:35,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:24:35,739 INFO L82 PathProgramCache]: Analyzing trace with hash 517017440, now seen corresponding path program 1 times [2020-04-17 18:24:35,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:24:35,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437826803] [2020-04-17 18:24:35,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:24:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:24:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:24:35,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437826803] [2020-04-17 18:24:35,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:24:35,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 18:24:35,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785722568] [2020-04-17 18:24:35,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 18:24:35,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:24:35,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 18:24:35,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 18:24:35,839 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 4 states. [2020-04-17 18:24:35,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:24:35,864 INFO L93 Difference]: Finished difference Result 952 states and 3222 transitions. [2020-04-17 18:24:35,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 18:24:35,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 18:24:35,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:24:35,871 INFO L225 Difference]: With dead ends: 952 [2020-04-17 18:24:35,872 INFO L226 Difference]: Without dead ends: 844 [2020-04-17 18:24:35,872 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:24:35,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-04-17 18:24:35,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2020-04-17 18:24:35,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-04-17 18:24:35,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2898 transitions. [2020-04-17 18:24:35,900 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2898 transitions. Word has length 14 [2020-04-17 18:24:35,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:24:35,900 INFO L479 AbstractCegarLoop]: Abstraction has 844 states and 2898 transitions. [2020-04-17 18:24:35,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 18:24:35,901 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2898 transitions. [2020-04-17 18:24:35,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 18:24:35,903 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:24:35,903 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:24:35,903 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:24:35,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:24:35,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1152352578, now seen corresponding path program 1 times [2020-04-17 18:24:35,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:24:35,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019101817] [2020-04-17 18:24:35,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:24:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:24:35,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:24:35,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019101817] [2020-04-17 18:24:35,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:24:35,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:24:35,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459203250] [2020-04-17 18:24:35,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:24:35,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:24:35,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:24:35,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:24:35,962 INFO L87 Difference]: Start difference. First operand 844 states and 2898 transitions. Second operand 5 states. [2020-04-17 18:24:36,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:24:36,011 INFO L93 Difference]: Finished difference Result 1063 states and 3587 transitions. [2020-04-17 18:24:36,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 18:24:36,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 18:24:36,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:24:36,017 INFO L225 Difference]: With dead ends: 1063 [2020-04-17 18:24:36,017 INFO L226 Difference]: Without dead ends: 472 [2020-04-17 18:24:36,017 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 18:24:36,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-04-17 18:24:36,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-04-17 18:24:36,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-04-17 18:24:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1500 transitions. [2020-04-17 18:24:36,036 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1500 transitions. Word has length 15 [2020-04-17 18:24:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:24:36,036 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 1500 transitions. [2020-04-17 18:24:36,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:24:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1500 transitions. [2020-04-17 18:24:36,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 18:24:36,038 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:24:36,038 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:24:36,038 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:24:36,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:24:36,039 INFO L82 PathProgramCache]: Analyzing trace with hash 508938520, now seen corresponding path program 1 times [2020-04-17 18:24:36,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:24:36,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528529601] [2020-04-17 18:24:36,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:24:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:24:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:24:36,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528529601] [2020-04-17 18:24:36,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:24:36,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 18:24:36,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965564527] [2020-04-17 18:24:36,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 18:24:36,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:24:36,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 18:24:36,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-17 18:24:36,147 INFO L87 Difference]: Start difference. First operand 472 states and 1500 transitions. Second operand 6 states. [2020-04-17 18:24:36,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:24:36,263 INFO L93 Difference]: Finished difference Result 634 states and 1979 transitions. [2020-04-17 18:24:36,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 18:24:36,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-04-17 18:24:36,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:24:36,268 INFO L225 Difference]: With dead ends: 634 [2020-04-17 18:24:36,268 INFO L226 Difference]: Without dead ends: 292 [2020-04-17 18:24:36,268 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-04-17 18:24:36,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-04-17 18:24:36,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2020-04-17 18:24:36,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-04-17 18:24:36,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 846 transitions. [2020-04-17 18:24:36,278 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 846 transitions. Word has length 16 [2020-04-17 18:24:36,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:24:36,278 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 846 transitions. [2020-04-17 18:24:36,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 18:24:36,279 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 846 transitions. [2020-04-17 18:24:36,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 18:24:36,280 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:24:36,280 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:24:36,280 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:24:36,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:24:36,280 INFO L82 PathProgramCache]: Analyzing trace with hash -670734284, now seen corresponding path program 1 times [2020-04-17 18:24:36,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:24:36,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136218406] [2020-04-17 18:24:36,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:24:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:24:36,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:24:36,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136218406] [2020-04-17 18:24:36,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:24:36,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:24:36,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480897374] [2020-04-17 18:24:36,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:24:36,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:24:36,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:24:36,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:24:36,375 INFO L87 Difference]: Start difference. First operand 292 states and 846 transitions. Second operand 5 states. [2020-04-17 18:24:36,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:24:36,415 INFO L93 Difference]: Finished difference Result 400 states and 1128 transitions. [2020-04-17 18:24:36,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 18:24:36,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-17 18:24:36,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:24:36,417 INFO L225 Difference]: With dead ends: 400 [2020-04-17 18:24:36,418 INFO L226 Difference]: Without dead ends: 172 [2020-04-17 18:24:36,418 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 18:24:36,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-04-17 18:24:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-04-17 18:24:36,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-04-17 18:24:36,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 452 transitions. [2020-04-17 18:24:36,423 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 452 transitions. Word has length 17 [2020-04-17 18:24:36,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:24:36,424 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 452 transitions. [2020-04-17 18:24:36,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:24:36,424 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 452 transitions. [2020-04-17 18:24:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 18:24:36,425 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 18:24:36,425 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 18:24:36,425 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 18:24:36,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 18:24:36,426 INFO L82 PathProgramCache]: Analyzing trace with hash -180488596, now seen corresponding path program 1 times [2020-04-17 18:24:36,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 18:24:36,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584832319] [2020-04-17 18:24:36,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 18:24:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 18:24:36,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 18:24:36,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584832319] [2020-04-17 18:24:36,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 18:24:36,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 18:24:36,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419105772] [2020-04-17 18:24:36,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 18:24:36,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 18:24:36,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 18:24:36,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 18:24:36,477 INFO L87 Difference]: Start difference. First operand 172 states and 452 transitions. Second operand 5 states. [2020-04-17 18:24:36,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 18:24:36,508 INFO L93 Difference]: Finished difference Result 148 states and 376 transitions. [2020-04-17 18:24:36,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 18:24:36,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-17 18:24:36,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 18:24:36,509 INFO L225 Difference]: With dead ends: 148 [2020-04-17 18:24:36,509 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 18:24:36,509 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 18:24:36,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 18:24:36,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 18:24:36,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 18:24:36,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 18:24:36,510 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-17 18:24:36,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 18:24:36,511 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 18:24:36,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 18:24:36,511 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 18:24:36,511 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 18:24:36,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 06:24:36 BasicIcfg [2020-04-17 18:24:36,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 18:24:36,517 INFO L168 Benchmark]: Toolchain (without parser) took 5722.04 ms. Allocated memory was 140.0 MB in the beginning and 278.4 MB in the end (delta: 138.4 MB). Free memory was 103.7 MB in the beginning and 117.6 MB in the end (delta: -13.9 MB). Peak memory consumption was 124.5 MB. Max. memory is 7.1 GB. [2020-04-17 18:24:36,518 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 18:24:36,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.75 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 101.8 MB in the beginning and 158.5 MB in the end (delta: -56.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-04-17 18:24:36,520 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.47 ms. Allocated memory is still 204.5 MB. Free memory was 158.5 MB in the beginning and 156.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 18:24:36,521 INFO L168 Benchmark]: Boogie Preprocessor took 38.11 ms. Allocated memory is still 204.5 MB. Free memory was 156.5 MB in the beginning and 155.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 18:24:36,521 INFO L168 Benchmark]: RCFGBuilder took 479.58 ms. Allocated memory is still 204.5 MB. Free memory was 155.2 MB in the beginning and 130.4 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-04-17 18:24:36,525 INFO L168 Benchmark]: TraceAbstraction took 4384.32 ms. Allocated memory was 204.5 MB in the beginning and 278.4 MB in the end (delta: 73.9 MB). Free memory was 129.8 MB in the beginning and 117.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. [2020-04-17 18:24:36,537 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 741.75 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 101.8 MB in the beginning and 158.5 MB in the end (delta: -56.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.47 ms. Allocated memory is still 204.5 MB. Free memory was 158.5 MB in the beginning and 156.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.11 ms. Allocated memory is still 204.5 MB. Free memory was 156.5 MB in the beginning and 155.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.58 ms. Allocated memory is still 204.5 MB. Free memory was 155.2 MB in the beginning and 130.4 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4384.32 ms. Allocated memory was 204.5 MB in the beginning and 278.4 MB in the end (delta: 73.9 MB). Free memory was 129.8 MB in the beginning and 117.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 1045 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 47 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 4485 CheckedPairsTotal, 67 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 256 SDtfs, 309 SDslu, 390 SDs, 0 SdLazy, 89 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred 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: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 5304 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...