/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:06:49,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:06:49,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:06:49,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:06:49,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:06:49,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:06:49,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:06:49,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:06:49,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:06:49,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:06:49,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:06:49,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:06:49,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:06:49,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:06:49,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:06:49,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:06:49,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:06:49,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:06:49,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:06:49,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:06:49,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:06:49,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:06:49,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:06:49,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:06:49,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:06:49,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:06:49,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:06:49,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:06:49,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:06:49,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:06:49,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:06:49,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:06:49,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:06:49,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:06:49,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:06:49,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:06:49,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:06:49,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:06:49,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:06:49,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:06:49,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:06:49,530 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 11:06:49,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:06:49,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:06:49,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:06:49,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:06:49,570 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:06:49,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:06:49,571 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:06:49,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:06:49,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:06:49,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:06:49,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:06:49,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:06:49,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:06:49,572 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:06:49,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:06:49,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:06:49,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:06:49,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:06:49,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:06:49,575 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:06:49,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:06:49,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:06:49,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:06:49,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:06:49,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:06:49,576 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:06:49,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:06:49,577 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:06:49,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:06:49,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:06:49,905 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:06:49,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:06:49,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:06:49,930 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:06:49,930 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:06:49,931 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i [2020-04-18 11:06:50,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6cb15862/00558cb6957a4248a71a9e8ca7875555/FLAG946164ee9 [2020-04-18 11:06:50,580 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:06:50,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i [2020-04-18 11:06:50,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6cb15862/00558cb6957a4248a71a9e8ca7875555/FLAG946164ee9 [2020-04-18 11:06:50,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6cb15862/00558cb6957a4248a71a9e8ca7875555 [2020-04-18 11:06:50,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:06:50,954 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:06:50,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:06:50,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:06:50,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:06:50,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:06:50" (1/1) ... [2020-04-18 11:06:50,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dff61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:06:50, skipping insertion in model container [2020-04-18 11:06:50,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:06:50" (1/1) ... [2020-04-18 11:06:50,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:06:51,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:06:51,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:06:51,550 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:06:51,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:06:51,678 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:06:51,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:06:51 WrapperNode [2020-04-18 11:06:51,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:06:51,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:06:51,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:06:51,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:06:51,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:06:51" (1/1) ... [2020-04-18 11:06:51,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:06:51" (1/1) ... [2020-04-18 11:06:51,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:06:51,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:06:51,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:06:51,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:06:51,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:06:51" (1/1) ... [2020-04-18 11:06:51,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:06:51" (1/1) ... [2020-04-18 11:06:51,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:06:51" (1/1) ... [2020-04-18 11:06:51,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:06:51" (1/1) ... [2020-04-18 11:06:51,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:06:51" (1/1) ... [2020-04-18 11:06:51,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:06:51" (1/1) ... [2020-04-18 11:06:51,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:06:51" (1/1) ... [2020-04-18 11:06:51,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:06:51,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:06:51,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:06:51,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:06:51,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:06:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:06:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:06:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:06:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:06:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:06:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:06:51,831 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:06:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:06:51,831 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:06:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:06:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:06:51,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:06:51,833 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 11:06:52,212 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:06:52,212 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:06:52,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:06:52 BoogieIcfgContainer [2020-04-18 11:06:52,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:06:52,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:06:52,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:06:52,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:06:52,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:06:50" (1/3) ... [2020-04-18 11:06:52,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403160dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:06:52, skipping insertion in model container [2020-04-18 11:06:52,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:06:51" (2/3) ... [2020-04-18 11:06:52,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403160dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:06:52, skipping insertion in model container [2020-04-18 11:06:52,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:06:52" (3/3) ... [2020-04-18 11:06:52,232 INFO L109 eAbstractionObserver]: Analyzing ICFG safe022_tso.opt.i [2020-04-18 11:06:52,240 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:06:52,240 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:06:52,248 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:06:52,249 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:06:52,273 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,273 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,273 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,273 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,274 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,274 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,275 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,275 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,275 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,275 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,276 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,276 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,280 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,281 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,281 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,281 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,287 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,287 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,287 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,288 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:06:52,304 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 11:06:52,323 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:06:52,323 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:06:52,323 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:06:52,323 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:06:52,323 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:06:52,324 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:06:52,324 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:06:52,324 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:06:52,337 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 122 flow [2020-04-18 11:06:52,339 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 11:06:52,374 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-18 11:06:52,375 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:06:52,379 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 11:06:52,382 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 11:06:52,400 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-18 11:06:52,400 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:06:52,401 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 11:06:52,403 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 11:06:52,404 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:06:54,058 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1165 [2020-04-18 11:06:54,058 INFO L214 etLargeBlockEncoding]: Total number of compositions: 48 [2020-04-18 11:06:54,062 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 11:06:54,075 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 11:06:54,077 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 11:06:54,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:06:54,083 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:06:54,084 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 11:06:54,084 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:06:54,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:06:54,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1988358065, now seen corresponding path program 1 times [2020-04-18 11:06:54,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:06:54,095 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [722242057] [2020-04-18 11:06:54,108 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:06:54,120 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:06:54,121 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 11:06:54,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 11:06:54,122 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:06:54,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:06:54,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1988358065, now seen corresponding path program 2 times [2020-04-18 11:06:54,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:06:54,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167286530] [2020-04-18 11:06:54,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:06:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:06:54,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:06:54,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167286530] [2020-04-18 11:06:54,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:06:54,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:06:54,411 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:06:54,412 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:06:54,415 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 11:06:54,416 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:06:54,426 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:06:54,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:06:54,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:06:54,432 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-04-18 11:06:54,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:06:54,437 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-18 11:06:54,437 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-18 11:06:54,438 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:06:54,439 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [722242057] [2020-04-18 11:06:54,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:06:54,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:06:54,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [722242057] [2020-04-18 11:06:54,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:06:54,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:06:54,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:06:54,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:06:54,450 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 11:06:54,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:06:54,478 INFO L93 Difference]: Finished difference Result 70 states and 149 transitions. [2020-04-18 11:06:54,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:06:54,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 11:06:54,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:06:54,500 INFO L225 Difference]: With dead ends: 70 [2020-04-18 11:06:54,500 INFO L226 Difference]: Without dead ends: 54 [2020-04-18 11:06:54,501 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:06:54,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-04-18 11:06:54,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-04-18 11:06:54,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-04-18 11:06:54,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2020-04-18 11:06:54,544 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 6 [2020-04-18 11:06:54,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:06:54,545 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2020-04-18 11:06:54,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:06:54,545 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2020-04-18 11:06:54,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 11:06:54,546 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:06:54,546 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:06:54,546 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:06:54,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:06:54,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1509525162, now seen corresponding path program 1 times [2020-04-18 11:06:54,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:06:54,547 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1165750812] [2020-04-18 11:06:54,548 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:06:54,549 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 11 transitions. [2020-04-18 11:06:54,549 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 11:06:54,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 11:06:54,550 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:06:54,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:06:54,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1509525162, now seen corresponding path program 2 times [2020-04-18 11:06:54,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:06:54,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610267754] [2020-04-18 11:06:54,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:06:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:06:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:06:54,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610267754] [2020-04-18 11:06:54,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:06:54,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:06:54,629 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:06:54,630 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:06:54,632 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 9 transitions. [2020-04-18 11:06:54,632 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:06:54,651 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:06:54,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:06:54,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:06:54,652 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-04-18 11:06:54,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:06:54,665 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2020-04-18 11:06:54,666 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-04-18 11:06:54,666 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:06:54,666 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1165750812] [2020-04-18 11:06:54,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:06:54,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:06:54,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1165750812] [2020-04-18 11:06:54,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:06:54,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:06:54,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:06:54,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:06:54,668 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand 4 states. [2020-04-18 11:06:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:06:54,688 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2020-04-18 11:06:54,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:06:54,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-04-18 11:06:54,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:06:54,690 INFO L225 Difference]: With dead ends: 60 [2020-04-18 11:06:54,690 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 11:06:54,692 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:06:54,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 11:06:54,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 11:06:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 11:06:54,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-04-18 11:06:54,698 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 7 [2020-04-18 11:06:54,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:06:54,698 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-04-18 11:06:54,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:06:54,698 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-04-18 11:06:54,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:06:54,699 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:06:54,699 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:06:54,699 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:06:54,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:06:54,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1014872071, now seen corresponding path program 1 times [2020-04-18 11:06:54,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:06:54,700 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1919409342] [2020-04-18 11:06:54,701 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:06:54,702 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 45 transitions. [2020-04-18 11:06:54,702 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-04-18 11:06:54,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:06:54,703 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:06:54,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:06:54,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1045260811, now seen corresponding path program 2 times [2020-04-18 11:06:54,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:06:54,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079011538] [2020-04-18 11:06:54,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:06:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:06:54,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:06:54,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079011538] [2020-04-18 11:06:54,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:06:54,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:06:54,757 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:06:54,757 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:06:54,760 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 28 transitions. [2020-04-18 11:06:54,760 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:06:54,767 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:06:54,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:06:54,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:06:54,768 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 4 states. [2020-04-18 11:06:54,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:06:54,785 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2020-04-18 11:06:54,785 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 47 transitions. [2020-04-18 11:06:54,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 11:06:54,786 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:06:54,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:06:54,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1014872071, now seen corresponding path program 3 times [2020-04-18 11:06:54,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:06:54,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139787776] [2020-04-18 11:06:54,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:06:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:06:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:06:54,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139787776] [2020-04-18 11:06:54,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:06:54,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:06:54,850 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:06:54,850 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:06:54,852 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-04-18 11:06:54,852 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:06:54,872 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:06:54,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:06:54,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:06:54,873 INFO L87 Difference]: Start difference. First operand 29 states and 47 transitions. Second operand 4 states. [2020-04-18 11:06:54,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:06:54,887 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2020-04-18 11:06:54,888 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 47 transitions. [2020-04-18 11:06:54,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:06:54,889 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1919409342] [2020-04-18 11:06:54,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:06:54,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:06:54,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1919409342] [2020-04-18 11:06:54,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 11:06:54,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:06:54,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:06:54,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:06:54,891 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 6 states. [2020-04-18 11:06:55,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:06:55,014 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-04-18 11:06:55,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 11:06:55,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-04-18 11:06:55,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:06:55,018 INFO L225 Difference]: With dead ends: 39 [2020-04-18 11:06:55,019 INFO L226 Difference]: Without dead ends: 29 [2020-04-18 11:06:55,019 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:06:55,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-18 11:06:55,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-18 11:06:55,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-18 11:06:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 44 transitions. [2020-04-18 11:06:55,029 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 44 transitions. Word has length 9 [2020-04-18 11:06:55,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:06:55,029 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 44 transitions. [2020-04-18 11:06:55,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 11:06:55,029 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2020-04-18 11:06:55,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:06:55,033 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:06:55,033 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:06:55,033 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:06:55,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:06:55,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1964607327, now seen corresponding path program 1 times [2020-04-18 11:06:55,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:06:55,034 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1469439692] [2020-04-18 11:06:55,035 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:06:55,035 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 62 transitions. [2020-04-18 11:06:55,036 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 11:06:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:06:55,037 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:06:55,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:06:55,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1925340867, now seen corresponding path program 2 times [2020-04-18 11:06:55,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:06:55,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339471614] [2020-04-18 11:06:55,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:06:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:06:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:06:55,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339471614] [2020-04-18 11:06:55,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:06:55,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:06:55,109 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:06:55,111 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:06:55,113 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 11:06:55,113 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:06:55,122 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:06:55,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:06:55,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:06:55,124 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-04-18 11:06:55,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:06:55,146 INFO L93 Difference]: Finished difference Result 40 states and 69 transitions. [2020-04-18 11:06:55,146 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 69 transitions. [2020-04-18 11:06:55,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:06:55,147 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:06:55,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:06:55,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1964607327, now seen corresponding path program 3 times [2020-04-18 11:06:55,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:06:55,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957337564] [2020-04-18 11:06:55,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:06:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:06:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:06:55,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957337564] [2020-04-18 11:06:55,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:06:55,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:06:55,218 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:06:55,219 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:06:55,223 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-04-18 11:06:55,224 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:06:55,282 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:06:55,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:06:55,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:06:55,283 INFO L87 Difference]: Start difference. First operand 40 states and 69 transitions. Second operand 6 states. [2020-04-18 11:06:55,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:06:55,312 INFO L93 Difference]: Finished difference Result 40 states and 69 transitions. [2020-04-18 11:06:55,313 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 69 transitions. [2020-04-18 11:06:55,313 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:06:55,314 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1469439692] [2020-04-18 11:06:55,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:06:55,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:06:55,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1469439692] [2020-04-18 11:06:55,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 11:06:55,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:06:55,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:06:55,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:06:55,315 INFO L87 Difference]: Start difference. First operand 29 states and 44 transitions. Second operand 8 states. [2020-04-18 11:06:55,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:06:55,420 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2020-04-18 11:06:55,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 11:06:55,421 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-04-18 11:06:55,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:06:55,421 INFO L225 Difference]: With dead ends: 27 [2020-04-18 11:06:55,421 INFO L226 Difference]: Without dead ends: 22 [2020-04-18 11:06:55,422 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:06:55,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-04-18 11:06:55,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-04-18 11:06:55,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-04-18 11:06:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-04-18 11:06:55,425 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 10 [2020-04-18 11:06:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:06:55,425 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-04-18 11:06:55,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 11:06:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-04-18 11:06:55,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:06:55,426 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:06:55,426 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:06:55,427 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:06:55,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:06:55,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1799382783, now seen corresponding path program 1 times [2020-04-18 11:06:55,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:06:55,428 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1582930091] [2020-04-18 11:06:55,428 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:06:55,429 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 120 transitions. [2020-04-18 11:06:55,430 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-04-18 11:06:55,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:06:55,431 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:06:55,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:06:55,431 INFO L82 PathProgramCache]: Analyzing trace with hash -187338591, now seen corresponding path program 2 times [2020-04-18 11:06:55,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:06:55,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496394711] [2020-04-18 11:06:55,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:06:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:06:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:06:55,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496394711] [2020-04-18 11:06:55,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:06:55,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:06:55,462 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:06:55,463 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:06:55,465 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-04-18 11:06:55,466 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:06:55,480 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:06:55,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:06:55,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:06:55,482 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-04-18 11:06:55,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:06:55,505 INFO L93 Difference]: Finished difference Result 76 states and 153 transitions. [2020-04-18 11:06:55,505 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 153 transitions. [2020-04-18 11:06:55,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:06:55,506 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:06:55,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:06:55,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1799382783, now seen corresponding path program 3 times [2020-04-18 11:06:55,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:06:55,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186825382] [2020-04-18 11:06:55,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:06:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:06:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:06:55,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186825382] [2020-04-18 11:06:55,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:06:55,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:06:55,554 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:06:55,555 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:06:55,557 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 11:06:55,557 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:06:55,600 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:06:55,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:06:55,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:06:55,600 INFO L87 Difference]: Start difference. First operand 76 states and 153 transitions. Second operand 5 states. [2020-04-18 11:06:55,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:06:55,623 INFO L93 Difference]: Finished difference Result 104 states and 197 transitions. [2020-04-18 11:06:55,623 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 197 transitions. [2020-04-18 11:06:55,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:06:55,628 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:06:55,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:06:55,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1797964863, now seen corresponding path program 4 times [2020-04-18 11:06:55,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:06:55,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578657952] [2020-04-18 11:06:55,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:06:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:06:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:06:55,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578657952] [2020-04-18 11:06:55,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:06:55,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:06:55,685 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:06:55,686 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:06:55,688 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 11:06:55,689 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:06:55,745 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:06:55,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:06:55,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:06:55,746 INFO L87 Difference]: Start difference. First operand 104 states and 197 transitions. Second operand 6 states. [2020-04-18 11:06:55,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:06:55,803 INFO L93 Difference]: Finished difference Result 110 states and 200 transitions. [2020-04-18 11:06:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 200 transitions. [2020-04-18 11:06:55,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:06:55,804 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1582930091] [2020-04-18 11:06:55,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:06:55,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:06:55,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1582930091] [2020-04-18 11:06:55,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:06:55,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:06:55,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:06:55,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:06:55,806 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 11 states. [2020-04-18 11:06:55,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:06:55,935 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-04-18 11:06:55,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 11:06:55,935 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-04-18 11:06:55,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:06:55,936 INFO L225 Difference]: With dead ends: 21 [2020-04-18 11:06:55,936 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:06:55,937 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2020-04-18 11:06:55,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:06:55,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:06:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:06:55,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:06:55,938 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-18 11:06:55,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:06:55,938 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:06:55,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:06:55,938 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:06:55,938 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:06:55,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:06:55 BasicIcfg [2020-04-18 11:06:55,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:06:55,946 INFO L168 Benchmark]: Toolchain (without parser) took 5012.37 ms. Allocated memory was 146.3 MB in the beginning and 245.9 MB in the end (delta: 99.6 MB). Free memory was 101.3 MB in the beginning and 139.5 MB in the end (delta: -38.2 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:06:55,947 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-18 11:06:55,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.97 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 99.3 MB in the beginning and 159.8 MB in the end (delta: -60.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:06:55,949 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.25 ms. Allocated memory is still 203.4 MB. Free memory was 159.8 MB in the beginning and 157.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:06:55,950 INFO L168 Benchmark]: Boogie Preprocessor took 27.76 ms. Allocated memory is still 203.4 MB. Free memory was 157.7 MB in the beginning and 155.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:06:55,950 INFO L168 Benchmark]: RCFGBuilder took 453.79 ms. Allocated memory is still 203.4 MB. Free memory was 155.8 MB in the beginning and 136.1 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-04-18 11:06:55,951 INFO L168 Benchmark]: TraceAbstraction took 3722.79 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 136.1 MB in the beginning and 139.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:06:55,956 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 723.97 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 99.3 MB in the beginning and 159.8 MB in the end (delta: -60.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.25 ms. Allocated memory is still 203.4 MB. Free memory was 159.8 MB in the beginning and 157.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.76 ms. Allocated memory is still 203.4 MB. Free memory was 157.7 MB in the beginning and 155.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 453.79 ms. Allocated memory is still 203.4 MB. Free memory was 155.8 MB in the beginning and 136.1 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3722.79 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 136.1 MB in the beginning and 139.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 61 ProgramPointsBefore, 22 ProgramPointsAfterwards, 56 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 356 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1165 CheckedPairsTotal, 48 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 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 57 SDtfs, 92 SDslu, 89 SDs, 0 SdLazy, 115 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...