/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 23:05:49,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 23:05:49,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 23:05:49,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 23:05:49,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 23:05:49,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 23:05:49,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 23:05:49,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 23:05:49,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 23:05:49,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 23:05:49,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 23:05:49,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 23:05:49,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 23:05:49,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 23:05:49,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 23:05:49,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 23:05:49,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 23:05:49,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 23:05:49,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 23:05:49,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 23:05:49,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 23:05:49,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 23:05:49,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 23:05:49,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 23:05:49,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 23:05:49,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 23:05:49,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 23:05:49,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 23:05:49,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 23:05:49,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 23:05:49,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 23:05:49,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 23:05:49,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 23:05:49,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 23:05:49,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 23:05:49,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 23:05:49,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 23:05:49,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 23:05:49,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 23:05:49,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 23:05:49,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 23:05:49,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-21 23:05:49,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 23:05:49,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 23:05:49,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 23:05:49,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 23:05:49,431 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 23:05:49,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 23:05:49,431 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 23:05:49,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 23:05:49,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 23:05:49,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 23:05:49,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 23:05:49,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 23:05:49,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 23:05:49,434 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 23:05:49,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 23:05:49,434 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 23:05:49,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 23:05:49,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 23:05:49,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 23:05:49,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 23:05:49,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 23:05:49,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:05:49,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 23:05:49,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 23:05:49,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 23:05:49,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 23:05:49,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 23:05:49,437 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 23:05:49,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 23:05:49,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 23:05:49,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 23:05:49,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 23:05:49,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 23:05:49,735 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 23:05:49,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-10-21 23:05:49,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/192b8365d/5a92572d8c8b4517a51e380f623d6cf3/FLAGa273b7931 [2020-10-21 23:05:50,363 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 23:05:50,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-10-21 23:05:50,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/192b8365d/5a92572d8c8b4517a51e380f623d6cf3/FLAGa273b7931 [2020-10-21 23:05:50,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/192b8365d/5a92572d8c8b4517a51e380f623d6cf3 [2020-10-21 23:05:50,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 23:05:50,651 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 23:05:50,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 23:05:50,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 23:05:50,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 23:05:50,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:05:50" (1/1) ... [2020-10-21 23:05:50,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d1e96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:05:50, skipping insertion in model container [2020-10-21 23:05:50,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 11:05:50" (1/1) ... [2020-10-21 23:05:50,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 23:05:50,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 23:05:51,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:05:51,264 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 23:05:51,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 23:05:51,438 INFO L208 MainTranslator]: Completed translation [2020-10-21 23:05:51,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:05:51 WrapperNode [2020-10-21 23:05:51,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 23:05:51,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 23:05:51,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 23:05:51,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 23:05:51,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:05:51" (1/1) ... [2020-10-21 23:05:51,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:05:51" (1/1) ... [2020-10-21 23:05:51,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 23:05:51,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 23:05:51,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 23:05:51,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 23:05:51,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:05:51" (1/1) ... [2020-10-21 23:05:51,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:05:51" (1/1) ... [2020-10-21 23:05:51,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:05:51" (1/1) ... [2020-10-21 23:05:51,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:05:51" (1/1) ... [2020-10-21 23:05:51,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:05:51" (1/1) ... [2020-10-21 23:05:51,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:05:51" (1/1) ... [2020-10-21 23:05:51,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:05:51" (1/1) ... [2020-10-21 23:05:51,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 23:05:51,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 23:05:51,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 23:05:51,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 23:05:51,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:05:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 23:05:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 23:05:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-21 23:05:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 23:05:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 23:05:51,588 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-21 23:05:51,589 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-21 23:05:51,589 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-21 23:05:51,589 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-21 23:05:51,590 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-21 23:05:51,590 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-21 23:05:51,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 23:05:51,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-21 23:05:51,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 23:05:51,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 23:05:51,594 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 23:05:51,981 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 23:05:51,981 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-21 23:05:51,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:05:51 BoogieIcfgContainer [2020-10-21 23:05:51,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 23:05:51,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 23:05:51,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 23:05:51,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 23:05:51,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 11:05:50" (1/3) ... [2020-10-21 23:05:51,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a37ac33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:05:51, skipping insertion in model container [2020-10-21 23:05:51,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 11:05:51" (2/3) ... [2020-10-21 23:05:51,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a37ac33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 11:05:51, skipping insertion in model container [2020-10-21 23:05:51,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 11:05:51" (3/3) ... [2020-10-21 23:05:52,008 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2020-10-21 23:05:52,019 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 23:05:52,020 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 23:05:52,027 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 23:05:52,028 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 23:05:52,060 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,060 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,060 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,061 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,062 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,062 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,063 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,063 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,064 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,064 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,065 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,065 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,065 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,066 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,066 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,066 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,070 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,071 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,071 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,071 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,080 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,081 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,081 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,082 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,089 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,090 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 23:05:52,095 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 23:05:52,110 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 23:05:52,129 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 23:05:52,129 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 23:05:52,129 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 23:05:52,129 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 23:05:52,129 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 23:05:52,130 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 23:05:52,130 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 23:05:52,130 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 23:05:52,144 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 23:05:52,145 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 80 transitions, 175 flow [2020-10-21 23:05:52,147 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 80 transitions, 175 flow [2020-10-21 23:05:52,149 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 175 flow [2020-10-21 23:05:52,201 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-10-21 23:05:52,201 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 23:05:52,209 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-21 23:05:52,217 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-21 23:05:54,120 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-21 23:05:54,242 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-21 23:05:54,303 INFO L131 LiptonReduction]: Checked pairs total: 2810 [2020-10-21 23:05:54,303 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-10-21 23:05:54,311 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-21 23:05:54,353 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-21 23:05:54,355 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-21 23:05:54,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 23:05:54,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:05:54,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:05:54,385 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:05:54,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:05:54,391 INFO L82 PathProgramCache]: Analyzing trace with hash -853874994, now seen corresponding path program 1 times [2020-10-21 23:05:54,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:05:54,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870562657] [2020-10-21 23:05:54,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:05:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:05:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:05:54,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870562657] [2020-10-21 23:05:54,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:05:54,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:05:54,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459832621] [2020-10-21 23:05:54,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:05:54,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:05:54,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:05:54,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:05:54,641 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-21 23:05:54,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:05:54,690 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-21 23:05:54,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:05:54,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-21 23:05:54,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:05:54,709 INFO L225 Difference]: With dead ends: 282 [2020-10-21 23:05:54,710 INFO L226 Difference]: Without dead ends: 218 [2020-10-21 23:05:54,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:05:54,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-21 23:05:54,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-21 23:05:54,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-21 23:05:54,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-21 23:05:54,783 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-21 23:05:54,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:05:54,785 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-21 23:05:54,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:05:54,785 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-21 23:05:54,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 23:05:54,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:05:54,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:05:54,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 23:05:54,787 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:05:54,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:05:54,788 INFO L82 PathProgramCache]: Analyzing trace with hash -700352928, now seen corresponding path program 1 times [2020-10-21 23:05:54,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:05:54,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559795101] [2020-10-21 23:05:54,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:05:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:05:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:05:54,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559795101] [2020-10-21 23:05:54,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:05:54,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:05:54,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290497843] [2020-10-21 23:05:54,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:05:54,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:05:54,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:05:54,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:05:54,889 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-21 23:05:54,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:05:54,915 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-21 23:05:54,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:05:54,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-21 23:05:54,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:05:54,918 INFO L225 Difference]: With dead ends: 242 [2020-10-21 23:05:54,918 INFO L226 Difference]: Without dead ends: 146 [2020-10-21 23:05:54,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:05:54,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-21 23:05:54,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-21 23:05:54,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-21 23:05:54,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-21 23:05:54,933 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-10-21 23:05:54,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:05:54,933 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-21 23:05:54,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:05:54,934 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-21 23:05:54,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 23:05:54,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:05:54,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:05:54,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 23:05:54,936 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:05:54,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:05:54,936 INFO L82 PathProgramCache]: Analyzing trace with hash 2063010818, now seen corresponding path program 1 times [2020-10-21 23:05:54,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:05:54,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503619232] [2020-10-21 23:05:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:05:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:05:55,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:05:55,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503619232] [2020-10-21 23:05:55,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:05:55,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 23:05:55,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317556040] [2020-10-21 23:05:55,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 23:05:55,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:05:55,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 23:05:55,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:05:55,018 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-21 23:05:55,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:05:55,027 INFO L93 Difference]: Finished difference Result 140 states and 343 transitions. [2020-10-21 23:05:55,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 23:05:55,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-21 23:05:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:05:55,030 INFO L225 Difference]: With dead ends: 140 [2020-10-21 23:05:55,030 INFO L226 Difference]: Without dead ends: 140 [2020-10-21 23:05:55,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 23:05:55,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-21 23:05:55,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-21 23:05:55,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-21 23:05:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 343 transitions. [2020-10-21 23:05:55,041 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 343 transitions. Word has length 11 [2020-10-21 23:05:55,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:05:55,042 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 343 transitions. [2020-10-21 23:05:55,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 23:05:55,042 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 343 transitions. [2020-10-21 23:05:55,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 23:05:55,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:05:55,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:05:55,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 23:05:55,044 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:05:55,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:05:55,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1374781277, now seen corresponding path program 1 times [2020-10-21 23:05:55,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:05:55,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938371133] [2020-10-21 23:05:55,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:05:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:05:55,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:05:55,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938371133] [2020-10-21 23:05:55,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:05:55,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:05:55,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422211434] [2020-10-21 23:05:55,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:05:55,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:05:55,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:05:55,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:05:55,118 INFO L87 Difference]: Start difference. First operand 140 states and 343 transitions. Second operand 4 states. [2020-10-21 23:05:55,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:05:55,137 INFO L93 Difference]: Finished difference Result 158 states and 376 transitions. [2020-10-21 23:05:55,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:05:55,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-21 23:05:55,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:05:55,138 INFO L225 Difference]: With dead ends: 158 [2020-10-21 23:05:55,139 INFO L226 Difference]: Without dead ends: 68 [2020-10-21 23:05:55,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:05:55,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-21 23:05:55,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-21 23:05:55,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-21 23:05:55,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-21 23:05:55,145 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-10-21 23:05:55,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:05:55,145 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-21 23:05:55,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:05:55,146 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-21 23:05:55,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 23:05:55,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:05:55,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:05:55,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 23:05:55,147 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:05:55,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:05:55,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1721558133, now seen corresponding path program 1 times [2020-10-21 23:05:55,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:05:55,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187125132] [2020-10-21 23:05:55,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:05:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:05:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:05:55,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187125132] [2020-10-21 23:05:55,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:05:55,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 23:05:55,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510832112] [2020-10-21 23:05:55,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:05:55,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:05:55,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:05:55,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:05:55,257 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-21 23:05:55,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:05:55,287 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-21 23:05:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 23:05:55,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-21 23:05:55,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:05:55,289 INFO L225 Difference]: With dead ends: 81 [2020-10-21 23:05:55,289 INFO L226 Difference]: Without dead ends: 59 [2020-10-21 23:05:55,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:05:55,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-21 23:05:55,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-21 23:05:55,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-21 23:05:55,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-21 23:05:55,294 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-21 23:05:55,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:05:55,295 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-21 23:05:55,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:05:55,295 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-21 23:05:55,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 23:05:55,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:05:55,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:05:55,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 23:05:55,296 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:05:55,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:05:55,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1881599875, now seen corresponding path program 1 times [2020-10-21 23:05:55,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:05:55,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818108848] [2020-10-21 23:05:55,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:05:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:05:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:05:55,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818108848] [2020-10-21 23:05:55,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:05:55,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:05:55,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474472134] [2020-10-21 23:05:55,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 23:05:55,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:05:55,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 23:05:55,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:05:55,358 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-21 23:05:55,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:05:55,416 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-21 23:05:55,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 23:05:55,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-21 23:05:55,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:05:55,418 INFO L225 Difference]: With dead ends: 60 [2020-10-21 23:05:55,419 INFO L226 Difference]: Without dead ends: 45 [2020-10-21 23:05:55,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 23:05:55,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-21 23:05:55,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-21 23:05:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-21 23:05:55,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-21 23:05:55,423 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-21 23:05:55,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:05:55,423 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-21 23:05:55,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 23:05:55,423 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-21 23:05:55,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 23:05:55,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:05:55,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:05:55,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 23:05:55,425 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:05:55,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:05:55,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1799830367, now seen corresponding path program 1 times [2020-10-21 23:05:55,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:05:55,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807199729] [2020-10-21 23:05:55,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:05:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:05:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:05:55,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807199729] [2020-10-21 23:05:55,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:05:55,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 23:05:55,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45734351] [2020-10-21 23:05:55,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 23:05:55,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:05:55,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 23:05:55,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-21 23:05:55,490 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-21 23:05:55,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:05:55,547 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-21 23:05:55,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 23:05:55,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-21 23:05:55,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:05:55,548 INFO L225 Difference]: With dead ends: 42 [2020-10-21 23:05:55,548 INFO L226 Difference]: Without dead ends: 36 [2020-10-21 23:05:55,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-21 23:05:55,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-21 23:05:55,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-21 23:05:55,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-21 23:05:55,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-21 23:05:55,552 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-21 23:05:55,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:05:55,552 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-21 23:05:55,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 23:05:55,553 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-21 23:05:55,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 23:05:55,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 23:05:55,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 23:05:55,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 23:05:55,554 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 23:05:55,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 23:05:55,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1269131745, now seen corresponding path program 1 times [2020-10-21 23:05:55,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 23:05:55,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620472245] [2020-10-21 23:05:55,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 23:05:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 23:05:55,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 23:05:55,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620472245] [2020-10-21 23:05:55,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 23:05:55,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-21 23:05:55,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61567144] [2020-10-21 23:05:55,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 23:05:55,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 23:05:55,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 23:05:55,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 23:05:55,595 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-21 23:05:55,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 23:05:55,633 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-21 23:05:55,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 23:05:55,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-21 23:05:55,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 23:05:55,634 INFO L225 Difference]: With dead ends: 35 [2020-10-21 23:05:55,634 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 23:05:55,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 23:05:55,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 23:05:55,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 23:05:55,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 23:05:55,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 23:05:55,636 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-21 23:05:55,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 23:05:55,636 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 23:05:55,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 23:05:55,636 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 23:05:55,636 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 23:05:55,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-21 23:05:55,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 11:05:55 BasicIcfg [2020-10-21 23:05:55,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 23:05:55,643 INFO L168 Benchmark]: Toolchain (without parser) took 4996.09 ms. Allocated memory was 140.5 MB in the beginning and 281.5 MB in the end (delta: 141.0 MB). Free memory was 101.7 MB in the beginning and 246.3 MB in the end (delta: -144.6 MB). Peak memory consumption was 115.0 MB. Max. memory is 7.1 GB. [2020-10-21 23:05:55,644 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-21 23:05:55,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 788.55 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 157.8 MB in the end (delta: -57.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-10-21 23:05:55,645 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.20 ms. Allocated memory is still 203.9 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-21 23:05:55,646 INFO L168 Benchmark]: Boogie Preprocessor took 29.21 ms. Allocated memory is still 203.9 MB. Free memory was 155.8 MB in the beginning and 153.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-21 23:05:55,647 INFO L168 Benchmark]: RCFGBuilder took 464.73 ms. Allocated memory is still 203.9 MB. Free memory was 153.9 MB in the beginning and 130.1 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-10-21 23:05:55,648 INFO L168 Benchmark]: TraceAbstraction took 3654.51 ms. Allocated memory was 203.9 MB in the beginning and 281.5 MB in the end (delta: 77.6 MB). Free memory was 129.4 MB in the beginning and 246.3 MB in the end (delta: -116.9 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. [2020-10-21 23:05:55,652 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 788.55 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 157.8 MB in the end (delta: -57.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.20 ms. Allocated memory is still 203.9 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.21 ms. Allocated memory is still 203.9 MB. Free memory was 155.8 MB in the beginning and 153.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 464.73 ms. Allocated memory is still 203.9 MB. Free memory was 153.9 MB in the beginning and 130.1 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3654.51 ms. Allocated memory was 203.9 MB in the beginning and 281.5 MB in the end (delta: 77.6 MB). Free memory was 129.4 MB in the beginning and 246.3 MB in the end (delta: -116.9 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 797 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 59 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 87 PlacesBefore, 31 PlacesAfterwards, 80 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2810 MoverChecksTotal - PositiveResult [Line: 17]: 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, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 136 SDtfs, 121 SDslu, 149 SDs, 0 SdLazy, 97 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3529 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...