/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/safe012_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:53:01,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:53:01,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:53:01,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:53:01,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:53:01,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:53:01,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:53:01,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:53:01,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:53:01,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:53:01,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:53:01,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:53:01,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:53:01,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:53:01,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:53:01,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:53:01,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:53:01,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:53:01,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:53:01,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:53:01,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:53:01,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:53:01,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:53:01,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:53:01,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:53:01,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:53:01,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:53:01,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:53:01,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:53:01,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:53:01,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:53:01,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:53:01,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:53:01,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:53:01,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:53:01,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:53:01,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:53:01,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:53:01,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:53:01,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:53:01,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:53:01,153 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 10:53:01,176 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:53:01,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:53:01,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:53:01,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:53:01,179 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:53:01,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:53:01,180 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:53:01,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:53:01,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:53:01,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:53:01,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:53:01,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:53:01,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:53:01,183 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:53:01,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:53:01,183 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:53:01,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:53:01,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:53:01,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:53:01,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:53:01,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:53:01,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:53:01,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:53:01,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:53:01,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:53:01,185 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:53:01,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:53:01,185 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:53:01,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:53:01,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:53:01,479 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:53:01,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:53:01,496 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:53:01,497 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:53:01,498 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:53:01,498 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-04-18 10:53:01,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c4a7588/f8f10e18959841f39183be20f7012ec0/FLAG4cbfb2fa1 [2020-04-18 10:53:02,094 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:53:02,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-04-18 10:53:02,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c4a7588/f8f10e18959841f39183be20f7012ec0/FLAG4cbfb2fa1 [2020-04-18 10:53:02,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73c4a7588/f8f10e18959841f39183be20f7012ec0 [2020-04-18 10:53:02,461 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:53:02,478 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:53:02,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:53:02,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:53:02,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:53:02,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:53:02" (1/1) ... [2020-04-18 10:53:02,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0b026d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:53:02, skipping insertion in model container [2020-04-18 10:53:02,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:53:02" (1/1) ... [2020-04-18 10:53:02,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:53:02,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:53:03,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:53:03,078 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:53:03,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:53:03,247 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:53:03,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:53:03 WrapperNode [2020-04-18 10:53:03,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:53:03,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:53:03,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:53:03,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:53:03,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:53:03" (1/1) ... [2020-04-18 10:53:03,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:53:03" (1/1) ... [2020-04-18 10:53:03,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:53:03,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:53:03,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:53:03,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:53:03,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:53:03" (1/1) ... [2020-04-18 10:53:03,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:53:03" (1/1) ... [2020-04-18 10:53:03,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:53:03" (1/1) ... [2020-04-18 10:53:03,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:53:03" (1/1) ... [2020-04-18 10:53:03,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:53:03" (1/1) ... [2020-04-18 10:53:03,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:53:03" (1/1) ... [2020-04-18 10:53:03,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:53:03" (1/1) ... [2020-04-18 10:53:03,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:53:03,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:53:03,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:53:03,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:53:03,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:53:03" (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 10:53:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:53:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:53:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:53:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:53:03,393 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:53:03,394 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:53:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:53:03,394 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:53:03,394 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:53:03,394 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:53:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:53:03,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:53:03,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:53:03,396 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 10:53:03,789 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:53:03,789 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:53:03,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:53:03 BoogieIcfgContainer [2020-04-18 10:53:03,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:53:03,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:53:03,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:53:03,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:53:03,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:53:02" (1/3) ... [2020-04-18 10:53:03,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7155ae36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:53:03, skipping insertion in model container [2020-04-18 10:53:03,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:53:03" (2/3) ... [2020-04-18 10:53:03,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7155ae36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:53:03, skipping insertion in model container [2020-04-18 10:53:03,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:53:03" (3/3) ... [2020-04-18 10:53:03,801 INFO L109 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2020-04-18 10:53:03,809 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:53:03,809 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:53:03,815 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:53:03,816 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:53:03,848 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,849 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,849 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,850 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,850 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,851 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,852 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,852 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,852 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,853 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,853 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,854 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,854 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,854 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,855 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,855 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,855 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,855 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,861 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,862 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,863 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,863 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,880 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,880 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,881 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,881 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,888 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,888 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,888 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,888 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:53:03,906 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:53:03,922 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:53:03,922 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:53:03,922 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:53:03,922 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:53:03,922 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:53:03,923 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:53:03,923 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:53:03,923 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:53:03,939 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 10:53:03,941 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 10:53:03,987 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 10:53:03,988 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:53:03,994 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:53:03,999 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 10:53:04,042 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 10:53:04,042 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:53:04,043 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:53:04,045 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 10:53:04,047 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:53:05,656 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 10:53:05,775 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-18 10:53:05,775 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 10:53:05,779 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 10:53:05,811 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 10:53:05,815 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 10:53:05,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:53:05,825 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:53:05,826 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:53:05,826 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:53:05,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:05,835 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-18 10:53:05,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:53:05,844 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1314787179] [2020-04-18 10:53:05,867 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:05,884 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:53:05,886 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:53:05,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:53:05,887 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:53:05,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:05,887 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 2 times [2020-04-18 10:53:05,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:05,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915065936] [2020-04-18 10:53:05,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:06,173 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 10:53:06,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915065936] [2020-04-18 10:53:06,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:06,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:53:06,177 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:06,179 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:06,185 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:53:06,185 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:06,189 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:53:06,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 10:53:06,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 10:53:06,196 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 10:53:06,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:06,200 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:53:06,200 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:53:06,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:53:06,201 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1314787179] [2020-04-18 10:53:06,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:53:06,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:53:06,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1314787179] [2020-04-18 10:53:06,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 10:53:06,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:53:06,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 10:53:06,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 10:53:06,209 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 10:53:06,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:06,242 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 10:53:06,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 10:53:06,244 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 10:53:06,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:53:06,260 INFO L225 Difference]: With dead ends: 362 [2020-04-18 10:53:06,261 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 10:53:06,262 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 10:53:06,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 10:53:06,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 10:53:06,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 10:53:06,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 10:53:06,342 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 10:53:06,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:53:06,343 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 10:53:06,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 10:53:06,343 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 10:53:06,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:53:06,345 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:53:06,345 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:53:06,345 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:53:06,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:06,345 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-18 10:53:06,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:53:06,346 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1460895528] [2020-04-18 10:53:06,346 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:06,347 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 10:53:06,347 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 10:53:06,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:53:06,347 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:53:06,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:06,348 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 2 times [2020-04-18 10:53:06,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:06,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095966483] [2020-04-18 10:53:06,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:06,471 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 10:53:06,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095966483] [2020-04-18 10:53:06,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:06,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:53:06,472 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:06,473 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:06,474 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 10:53:06,474 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:06,496 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:53:06,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:53:06,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:53:06,497 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 5 states. [2020-04-18 10:53:06,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:06,517 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 10:53:06,517 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 10:53:06,517 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:53:06,518 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1460895528] [2020-04-18 10:53:06,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:53:06,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:53:06,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1460895528] [2020-04-18 10:53:06,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:53:06,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:53:06,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:53:06,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:53:06,521 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-04-18 10:53:06,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:06,588 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-18 10:53:06,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 10:53:06,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-18 10:53:06,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:53:06,593 INFO L225 Difference]: With dead ends: 330 [2020-04-18 10:53:06,593 INFO L226 Difference]: Without dead ends: 266 [2020-04-18 10:53:06,595 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:53:06,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-18 10:53:06,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-18 10:53:06,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-18 10:53:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-18 10:53:06,638 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-18 10:53:06,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:53:06,639 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-18 10:53:06,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:53:06,639 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-18 10:53:06,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:53:06,640 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:53:06,640 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:53:06,641 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:53:06,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:06,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1854523641, now seen corresponding path program 1 times [2020-04-18 10:53:06,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:53:06,642 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [453051477] [2020-04-18 10:53:06,642 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:06,643 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 24 transitions. [2020-04-18 10:53:06,643 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-04-18 10:53:06,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:53:06,644 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:53:06,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:06,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1854523641, now seen corresponding path program 2 times [2020-04-18 10:53:06,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:06,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453706936] [2020-04-18 10:53:06,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:06,762 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 10:53:06,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453706936] [2020-04-18 10:53:06,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:06,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:53:06,764 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:06,766 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:06,769 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-04-18 10:53:06,769 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:06,881 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:53:06,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 10:53:06,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:53:06,882 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 8 states. [2020-04-18 10:53:06,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:06,919 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2020-04-18 10:53:06,919 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2020-04-18 10:53:06,920 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:53:06,920 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [453051477] [2020-04-18 10:53:06,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:53:06,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:53:06,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [453051477] [2020-04-18 10:53:06,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 10:53:06,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:53:06,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 10:53:06,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:53:06,922 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 8 states. [2020-04-18 10:53:07,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:07,065 INFO L93 Difference]: Finished difference Result 314 states and 856 transitions. [2020-04-18 10:53:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 10:53:07,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-04-18 10:53:07,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:53:07,068 INFO L225 Difference]: With dead ends: 314 [2020-04-18 10:53:07,068 INFO L226 Difference]: Without dead ends: 140 [2020-04-18 10:53:07,068 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-04-18 10:53:07,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-04-18 10:53:07,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-04-18 10:53:07,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-04-18 10:53:07,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 354 transitions. [2020-04-18 10:53:07,079 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 354 transitions. Word has length 10 [2020-04-18 10:53:07,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:53:07,079 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 354 transitions. [2020-04-18 10:53:07,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 10:53:07,079 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 354 transitions. [2020-04-18 10:53:07,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:53:07,080 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:53:07,081 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:53:07,081 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:53:07,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:07,081 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 1 times [2020-04-18 10:53:07,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:53:07,082 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [53590866] [2020-04-18 10:53:07,082 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:07,083 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 60 transitions. [2020-04-18 10:53:07,084 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 10:53:07,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:53:07,084 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:53:07,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:07,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1046934219, now seen corresponding path program 2 times [2020-04-18 10:53:07,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:07,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476280857] [2020-04-18 10:53:07,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:07,242 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 10:53:07,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476280857] [2020-04-18 10:53:07,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:07,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:53:07,243 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:07,246 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:07,248 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 35 transitions. [2020-04-18 10:53:07,248 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:07,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 10:53:07,399 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 10:53:07,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 10:53:07,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:53:07,400 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 9 states. [2020-04-18 10:53:07,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:07,482 INFO L93 Difference]: Finished difference Result 39 states and 64 transitions. [2020-04-18 10:53:07,482 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 64 transitions. [2020-04-18 10:53:07,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:53:07,483 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:53:07,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:07,483 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 3 times [2020-04-18 10:53:07,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:07,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765122091] [2020-04-18 10:53:07,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:07,582 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 10:53:07,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765122091] [2020-04-18 10:53:07,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:07,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:53:07,587 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:07,588 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:07,590 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 18 transitions. [2020-04-18 10:53:07,590 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:07,648 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:53:07,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:53:07,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-04-18 10:53:07,649 INFO L87 Difference]: Start difference. First operand 39 states and 64 transitions. Second operand 7 states. [2020-04-18 10:53:07,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:07,687 INFO L93 Difference]: Finished difference Result 39 states and 64 transitions. [2020-04-18 10:53:07,687 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 64 transitions. [2020-04-18 10:53:07,687 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:53:07,688 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [53590866] [2020-04-18 10:53:07,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:53:07,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:53:07,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [53590866] [2020-04-18 10:53:07,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 10:53:07,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:53:07,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 10:53:07,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-04-18 10:53:07,690 INFO L87 Difference]: Start difference. First operand 140 states and 354 transitions. Second operand 13 states. [2020-04-18 10:53:07,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:07,999 INFO L93 Difference]: Finished difference Result 176 states and 428 transitions. [2020-04-18 10:53:07,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 10:53:08,000 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-04-18 10:53:08,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:53:08,001 INFO L225 Difference]: With dead ends: 176 [2020-04-18 10:53:08,001 INFO L226 Difference]: Without dead ends: 80 [2020-04-18 10:53:08,002 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2020-04-18 10:53:08,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-18 10:53:08,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-18 10:53:08,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-18 10:53:08,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-04-18 10:53:08,006 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 12 [2020-04-18 10:53:08,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:53:08,006 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-04-18 10:53:08,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 10:53:08,006 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-04-18 10:53:08,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:53:08,007 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:53:08,007 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:53:08,008 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:53:08,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:08,008 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-04-18 10:53:08,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:53:08,008 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [554181509] [2020-04-18 10:53:08,009 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:08,011 INFO L259 McrAutomatonBuilder]: Finished intersection with 90 states and 220 transitions. [2020-04-18 10:53:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-04-18 10:53:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:53:08,013 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:53:08,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:08,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1571173060, now seen corresponding path program 2 times [2020-04-18 10:53:08,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:08,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640190796] [2020-04-18 10:53:08,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:08,088 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 10:53:08,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640190796] [2020-04-18 10:53:08,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:08,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:53:08,089 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:08,091 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:08,096 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 103 transitions. [2020-04-18 10:53:08,097 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:08,114 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 10:53:08,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:53:08,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:53:08,116 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 5 states. [2020-04-18 10:53:08,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:08,155 INFO L93 Difference]: Finished difference Result 110 states and 256 transitions. [2020-04-18 10:53:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 256 transitions. [2020-04-18 10:53:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:53:08,156 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:53:08,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:08,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1942674216, now seen corresponding path program 3 times [2020-04-18 10:53:08,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:08,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098319747] [2020-04-18 10:53:08,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:08,251 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 10:53:08,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098319747] [2020-04-18 10:53:08,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:08,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:53:08,252 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:08,254 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:08,258 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 71 transitions. [2020-04-18 10:53:08,258 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:08,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 10:53:08,438 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 10:53:08,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 10:53:08,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-04-18 10:53:08,439 INFO L87 Difference]: Start difference. First operand 110 states and 256 transitions. Second operand 9 states. [2020-04-18 10:53:08,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:08,509 INFO L93 Difference]: Finished difference Result 131 states and 283 transitions. [2020-04-18 10:53:08,509 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 283 transitions. [2020-04-18 10:53:08,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:53:08,510 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:53:08,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:08,510 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 4 times [2020-04-18 10:53:08,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:08,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314710821] [2020-04-18 10:53:08,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:08,585 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 10:53:08,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314710821] [2020-04-18 10:53:08,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:08,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:53:08,586 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:08,588 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:08,591 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-04-18 10:53:08,591 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:08,626 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:53:08,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:53:08,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-04-18 10:53:08,627 INFO L87 Difference]: Start difference. First operand 131 states and 283 transitions. Second operand 4 states. [2020-04-18 10:53:08,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:08,639 INFO L93 Difference]: Finished difference Result 131 states and 283 transitions. [2020-04-18 10:53:08,639 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 283 transitions. [2020-04-18 10:53:08,640 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:53:08,641 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [554181509] [2020-04-18 10:53:08,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:53:08,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:53:08,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [554181509] [2020-04-18 10:53:08,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 10:53:08,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:53:08,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 10:53:08,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2020-04-18 10:53:08,643 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 13 states. [2020-04-18 10:53:08,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:08,997 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-04-18 10:53:08,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 10:53:08,998 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-04-18 10:53:08,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:53:08,999 INFO L225 Difference]: With dead ends: 91 [2020-04-18 10:53:08,999 INFO L226 Difference]: Without dead ends: 69 [2020-04-18 10:53:09,000 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2020-04-18 10:53:09,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-04-18 10:53:09,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-04-18 10:53:09,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-04-18 10:53:09,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-04-18 10:53:09,004 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-04-18 10:53:09,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:53:09,005 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-04-18 10:53:09,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 10:53:09,005 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-04-18 10:53:09,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:53:09,006 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:53:09,006 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:53:09,019 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:53:09,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:09,019 INFO L82 PathProgramCache]: Analyzing trace with hash 822538733, now seen corresponding path program 1 times [2020-04-18 10:53:09,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:53:09,020 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1111632745] [2020-04-18 10:53:09,021 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:09,023 INFO L259 McrAutomatonBuilder]: Finished intersection with 118 states and 300 transitions. [2020-04-18 10:53:09,025 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-04-18 10:53:09,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:53:09,026 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:53:09,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:09,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1462039513, now seen corresponding path program 2 times [2020-04-18 10:53:09,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:09,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717941333] [2020-04-18 10:53:09,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:09,128 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 10:53:09,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717941333] [2020-04-18 10:53:09,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:09,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:53:09,129 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:09,130 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:09,135 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 60 transitions. [2020-04-18 10:53:09,135 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:09,148 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:53:09,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:53:09,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:53:09,149 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 5 states. [2020-04-18 10:53:09,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:09,180 INFO L93 Difference]: Finished difference Result 158 states and 392 transitions. [2020-04-18 10:53:09,181 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 392 transitions. [2020-04-18 10:53:09,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:53:09,181 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:53:09,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:09,182 INFO L82 PathProgramCache]: Analyzing trace with hash 884888423, now seen corresponding path program 3 times [2020-04-18 10:53:09,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:09,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650190032] [2020-04-18 10:53:09,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:09,261 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 10:53:09,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650190032] [2020-04-18 10:53:09,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:09,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:53:09,262 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:09,264 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:09,268 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 81 transitions. [2020-04-18 10:53:09,268 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:09,347 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 10:53:09,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:53:09,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:53:09,348 INFO L87 Difference]: Start difference. First operand 158 states and 392 transitions. Second operand 7 states. [2020-04-18 10:53:09,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:09,396 INFO L93 Difference]: Finished difference Result 190 states and 439 transitions. [2020-04-18 10:53:09,396 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 439 transitions. [2020-04-18 10:53:09,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:53:09,397 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:53:09,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:09,398 INFO L82 PathProgramCache]: Analyzing trace with hash 822538733, now seen corresponding path program 4 times [2020-04-18 10:53:09,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:09,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512060526] [2020-04-18 10:53:09,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:09,454 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 10:53:09,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512060526] [2020-04-18 10:53:09,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:09,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:53:09,455 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:09,456 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:09,459 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 39 transitions. [2020-04-18 10:53:09,459 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:09,526 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:53:09,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:53:09,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-04-18 10:53:09,527 INFO L87 Difference]: Start difference. First operand 190 states and 439 transitions. Second operand 6 states. [2020-04-18 10:53:09,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:09,564 INFO L93 Difference]: Finished difference Result 190 states and 439 transitions. [2020-04-18 10:53:09,564 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 439 transitions. [2020-04-18 10:53:09,565 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:53:09,565 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1111632745] [2020-04-18 10:53:09,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:53:09,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:53:09,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1111632745] [2020-04-18 10:53:09,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 10:53:09,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:53:09,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 10:53:09,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2020-04-18 10:53:09,567 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 13 states. [2020-04-18 10:53:09,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:09,830 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-04-18 10:53:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 10:53:09,831 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-04-18 10:53:09,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:53:09,831 INFO L225 Difference]: With dead ends: 65 [2020-04-18 10:53:09,832 INFO L226 Difference]: Without dead ends: 50 [2020-04-18 10:53:09,833 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=213, Invalid=779, Unknown=0, NotChecked=0, Total=992 [2020-04-18 10:53:09,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-04-18 10:53:09,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-04-18 10:53:09,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-04-18 10:53:09,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-04-18 10:53:09,838 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-04-18 10:53:09,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:53:09,838 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-04-18 10:53:09,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 10:53:09,838 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-04-18 10:53:09,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:53:09,839 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:53:09,839 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:53:09,839 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:53:09,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:09,840 INFO L82 PathProgramCache]: Analyzing trace with hash -246333940, now seen corresponding path program 1 times [2020-04-18 10:53:09,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:53:09,840 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [183911257] [2020-04-18 10:53:09,841 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:09,843 INFO L259 McrAutomatonBuilder]: Finished intersection with 150 states and 396 transitions. [2020-04-18 10:53:09,844 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states. [2020-04-18 10:53:09,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:53:09,845 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:53:09,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:09,846 INFO L82 PathProgramCache]: Analyzing trace with hash -792798900, now seen corresponding path program 2 times [2020-04-18 10:53:09,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:09,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375058069] [2020-04-18 10:53:09,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:09,937 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 10:53:09,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375058069] [2020-04-18 10:53:09,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:09,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 10:53:09,938 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:09,939 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:09,943 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 53 transitions. [2020-04-18 10:53:09,943 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:10,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 10:53:10,147 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 10:53:10,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 10:53:10,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:53:10,148 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 10 states. [2020-04-18 10:53:10,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:10,412 INFO L93 Difference]: Finished difference Result 202 states and 498 transitions. [2020-04-18 10:53:10,412 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 498 transitions. [2020-04-18 10:53:10,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:53:10,414 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:53:10,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:10,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1760595468, now seen corresponding path program 3 times [2020-04-18 10:53:10,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:10,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118347238] [2020-04-18 10:53:10,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:10,538 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 10:53:10,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118347238] [2020-04-18 10:53:10,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:10,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 10:53:10,539 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:10,541 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:10,546 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 46 transitions. [2020-04-18 10:53:10,546 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:10,622 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:53:10,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 10:53:10,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-04-18 10:53:10,623 INFO L87 Difference]: Start difference. First operand 202 states and 498 transitions. Second operand 8 states. [2020-04-18 10:53:10,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:10,843 INFO L93 Difference]: Finished difference Result 295 states and 706 transitions. [2020-04-18 10:53:10,843 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 706 transitions. [2020-04-18 10:53:10,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:53:10,845 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:53:10,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:10,845 INFO L82 PathProgramCache]: Analyzing trace with hash -246333940, now seen corresponding path program 4 times [2020-04-18 10:53:10,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:10,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968719192] [2020-04-18 10:53:10,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:10,915 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 10:53:10,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968719192] [2020-04-18 10:53:10,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:10,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:53:10,917 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:10,918 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:10,922 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 38 transitions. [2020-04-18 10:53:10,922 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:11,050 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:53:11,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:53:11,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2020-04-18 10:53:11,052 INFO L87 Difference]: Start difference. First operand 295 states and 706 transitions. Second operand 7 states. [2020-04-18 10:53:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:11,152 INFO L93 Difference]: Finished difference Result 295 states and 706 transitions. [2020-04-18 10:53:11,152 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 706 transitions. [2020-04-18 10:53:11,153 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:53:11,154 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [183911257] [2020-04-18 10:53:11,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:53:11,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 10:53:11,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [183911257] [2020-04-18 10:53:11,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 10:53:11,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:53:11,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 10:53:11,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=836, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 10:53:11,156 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 20 states. [2020-04-18 10:53:11,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:11,394 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-04-18 10:53:11,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 10:53:11,395 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 16 [2020-04-18 10:53:11,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:53:11,395 INFO L225 Difference]: With dead ends: 43 [2020-04-18 10:53:11,396 INFO L226 Difference]: Without dead ends: 37 [2020-04-18 10:53:11,397 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 10:53:11,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-04-18 10:53:11,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-04-18 10:53:11,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-04-18 10:53:11,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-04-18 10:53:11,399 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-04-18 10:53:11,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:53:11,400 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-04-18 10:53:11,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 10:53:11,400 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-04-18 10:53:11,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 10:53:11,415 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:53:11,415 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:53:11,415 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:53:11,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:11,416 INFO L82 PathProgramCache]: Analyzing trace with hash -570484421, now seen corresponding path program 1 times [2020-04-18 10:53:11,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:53:11,416 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1180777393] [2020-04-18 10:53:11,417 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:11,420 INFO L259 McrAutomatonBuilder]: Finished intersection with 298 states and 864 transitions. [2020-04-18 10:53:11,422 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 10:53:11,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 10:53:11,424 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:53:11,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:11,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1695335291, now seen corresponding path program 2 times [2020-04-18 10:53:11,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:11,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78921549] [2020-04-18 10:53:11,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:11,472 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 10:53:11,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78921549] [2020-04-18 10:53:11,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:11,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:53:11,473 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:11,474 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:11,479 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 79 transitions. [2020-04-18 10:53:11,480 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:11,492 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:53:11,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:53:11,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:53:11,493 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 5 states. [2020-04-18 10:53:11,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:11,539 INFO L93 Difference]: Finished difference Result 418 states and 1190 transitions. [2020-04-18 10:53:11,539 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1190 transitions. [2020-04-18 10:53:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 10:53:11,540 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:53:11,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:11,541 INFO L82 PathProgramCache]: Analyzing trace with hash -145351095, now seen corresponding path program 3 times [2020-04-18 10:53:11,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:11,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212517587] [2020-04-18 10:53:11,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:11,582 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 10:53:11,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212517587] [2020-04-18 10:53:11,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:11,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:53:11,583 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:11,585 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:11,590 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 92 transitions. [2020-04-18 10:53:11,590 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:11,622 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:53:11,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:53:11,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:53:11,623 INFO L87 Difference]: Start difference. First operand 418 states and 1190 transitions. Second operand 6 states. [2020-04-18 10:53:11,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:11,660 INFO L93 Difference]: Finished difference Result 670 states and 1820 transitions. [2020-04-18 10:53:11,660 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1820 transitions. [2020-04-18 10:53:11,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 10:53:11,662 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:53:11,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:11,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1043669943, now seen corresponding path program 4 times [2020-04-18 10:53:11,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:11,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699600799] [2020-04-18 10:53:11,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:11,733 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 10:53:11,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699600799] [2020-04-18 10:53:11,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:11,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 10:53:11,734 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:11,736 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:11,740 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 75 transitions. [2020-04-18 10:53:11,740 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:11,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 10:53:12,073 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 10:53:12,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 10:53:12,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2020-04-18 10:53:12,074 INFO L87 Difference]: Start difference. First operand 670 states and 1820 transitions. Second operand 13 states. [2020-04-18 10:53:12,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:12,761 INFO L93 Difference]: Finished difference Result 962 states and 2558 transitions. [2020-04-18 10:53:12,762 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 2558 transitions. [2020-04-18 10:53:12,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 10:53:12,765 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:53:12,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:53:12,765 INFO L82 PathProgramCache]: Analyzing trace with hash -503762501, now seen corresponding path program 5 times [2020-04-18 10:53:12,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:53:12,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064008267] [2020-04-18 10:53:12,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:53:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:53:12,836 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 10:53:12,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064008267] [2020-04-18 10:53:12,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:53:12,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:53:12,837 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:53:12,838 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:53:12,842 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 44 transitions. [2020-04-18 10:53:12,842 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:53:12,972 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:53:12,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:53:12,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1043, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 10:53:12,973 INFO L87 Difference]: Start difference. First operand 962 states and 2558 transitions. Second operand 7 states. [2020-04-18 10:53:13,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:13,154 INFO L93 Difference]: Finished difference Result 983 states and 2572 transitions. [2020-04-18 10:53:13,154 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 2572 transitions. [2020-04-18 10:53:13,156 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:53:13,157 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1180777393] [2020-04-18 10:53:13,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:53:13,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 10:53:13,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1180777393] [2020-04-18 10:53:13,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-04-18 10:53:13,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:53:13,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 10:53:13,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1245, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 10:53:13,159 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 23 states. [2020-04-18 10:53:13,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:53:13,580 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-04-18 10:53:13,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 10:53:13,581 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 18 [2020-04-18 10:53:13,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:53:13,581 INFO L225 Difference]: With dead ends: 36 [2020-04-18 10:53:13,581 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:53:13,583 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=476, Invalid=2386, Unknown=0, NotChecked=0, Total=2862 [2020-04-18 10:53:13,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:53:13,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:53:13,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:53:13,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:53:13,584 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 10:53:13,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:53:13,584 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:53:13,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-04-18 10:53:13,584 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:53:13,584 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:53:13,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:53:13 BasicIcfg [2020-04-18 10:53:13,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:53:13,590 INFO L168 Benchmark]: Toolchain (without parser) took 11127.96 ms. Allocated memory was 141.6 MB in the beginning and 324.0 MB in the end (delta: 182.5 MB). Free memory was 103.2 MB in the beginning and 137.5 MB in the end (delta: -34.3 MB). Peak memory consumption was 148.2 MB. Max. memory is 7.1 GB. [2020-04-18 10:53:13,591 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-18 10:53:13,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 769.41 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 161.3 MB in the end (delta: -60.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:53:13,592 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.38 ms. Allocated memory is still 204.5 MB. Free memory was 161.3 MB in the beginning and 159.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 10:53:13,593 INFO L168 Benchmark]: Boogie Preprocessor took 26.52 ms. Allocated memory is still 204.5 MB. Free memory was 159.4 MB in the beginning and 157.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 10:53:13,594 INFO L168 Benchmark]: RCFGBuilder took 473.90 ms. Allocated memory is still 204.5 MB. Free memory was 157.5 MB in the beginning and 135.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:53:13,594 INFO L168 Benchmark]: TraceAbstraction took 9793.64 ms. Allocated memory was 204.5 MB in the beginning and 324.0 MB in the end (delta: 119.5 MB). Free memory was 134.9 MB in the beginning and 137.5 MB in the end (delta: -2.6 MB). Peak memory consumption was 117.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:53:13,597 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 769.41 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 161.3 MB in the end (delta: -60.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.38 ms. Allocated memory is still 204.5 MB. Free memory was 161.3 MB in the beginning and 159.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.52 ms. Allocated memory is still 204.5 MB. Free memory was 159.4 MB in the beginning and 157.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 473.90 ms. Allocated memory is still 204.5 MB. Free memory was 157.5 MB in the beginning and 135.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9793.64 ms. Allocated memory was 204.5 MB in the beginning and 324.0 MB in the end (delta: 119.5 MB). Free memory was 134.9 MB in the beginning and 137.5 MB in the end (delta: -2.6 MB). Peak memory consumption was 117.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 695 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 140 SDtfs, 586 SDslu, 532 SDs, 0 SdLazy, 660 SolverSat, 152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 460 GetRequests, 262 SyntacticMatches, 7 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1624 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 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...