/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-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-12 00:16:45,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-12 00:16:45,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-12 00:16:46,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-12 00:16:46,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-12 00:16:46,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-12 00:16:46,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-12 00:16:46,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-12 00:16:46,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-12 00:16:46,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-12 00:16:46,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-12 00:16:46,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-12 00:16:46,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-12 00:16:46,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-12 00:16:46,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-12 00:16:46,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-12 00:16:46,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-12 00:16:46,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-12 00:16:46,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-12 00:16:46,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-12 00:16:46,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-12 00:16:46,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-12 00:16:46,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-12 00:16:46,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-12 00:16:46,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-12 00:16:46,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-12 00:16:46,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-12 00:16:46,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-12 00:16:46,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-12 00:16:46,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-12 00:16:46,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-12 00:16:46,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-12 00:16:46,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-12 00:16:46,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-12 00:16:46,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-12 00:16:46,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-12 00:16:46,065 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-12 00:16:46,090 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-12 00:16:46,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-12 00:16:46,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-12 00:16:46,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-12 00:16:46,092 INFO L138 SettingsManager]: * Use SBE=true [2020-09-12 00:16:46,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-12 00:16:46,092 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-12 00:16:46,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-12 00:16:46,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-12 00:16:46,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-12 00:16:46,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-12 00:16:46,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-12 00:16:46,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-12 00:16:46,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-12 00:16:46,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-12 00:16:46,094 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-12 00:16:46,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-12 00:16:46,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-12 00:16:46,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-12 00:16:46,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-12 00:16:46,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-12 00:16:46,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-12 00:16:46,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-12 00:16:46,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-12 00:16:46,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-12 00:16:46,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-12 00:16:46,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-12 00:16:46,097 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-12 00:16:46,097 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-12 00:16:46,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-12 00:16:46,097 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-12 00:16:46,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-12 00:16:46,566 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-12 00:16:46,570 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-12 00:16:46,573 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-12 00:16:46,575 INFO L275 PluginConnector]: CDTParser initialized [2020-09-12 00:16:46,578 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-09-12 00:16:46,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42fc337e2/7ebe704e40f44366a404eb81f45e5a7c/FLAGe3a28ceb4 [2020-09-12 00:16:47,296 INFO L306 CDTParser]: Found 1 translation units. [2020-09-12 00:16:47,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-09-12 00:16:47,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42fc337e2/7ebe704e40f44366a404eb81f45e5a7c/FLAGe3a28ceb4 [2020-09-12 00:16:47,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42fc337e2/7ebe704e40f44366a404eb81f45e5a7c [2020-09-12 00:16:47,554 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-12 00:16:47,559 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-12 00:16:47,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-12 00:16:47,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-12 00:16:47,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-12 00:16:47,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:16:47" (1/1) ... [2020-09-12 00:16:47,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52697317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:16:47, skipping insertion in model container [2020-09-12 00:16:47,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:16:47" (1/1) ... [2020-09-12 00:16:47,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-12 00:16:47,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-12 00:16:48,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:16:48,234 INFO L203 MainTranslator]: Completed pre-run [2020-09-12 00:16:48,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:16:48,368 INFO L208 MainTranslator]: Completed translation [2020-09-12 00:16:48,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:16:48 WrapperNode [2020-09-12 00:16:48,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-12 00:16:48,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-12 00:16:48,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-12 00:16:48,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-12 00:16:48,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:16:48" (1/1) ... [2020-09-12 00:16:48,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:16:48" (1/1) ... [2020-09-12 00:16:48,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-12 00:16:48,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-12 00:16:48,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-12 00:16:48,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-12 00:16:48,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:16:48" (1/1) ... [2020-09-12 00:16:48,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:16:48" (1/1) ... [2020-09-12 00:16:48,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:16:48" (1/1) ... [2020-09-12 00:16:48,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:16:48" (1/1) ... [2020-09-12 00:16:48,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:16:48" (1/1) ... [2020-09-12 00:16:48,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:16:48" (1/1) ... [2020-09-12 00:16:48,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:16:48" (1/1) ... [2020-09-12 00:16:48,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-12 00:16:48,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-12 00:16:48,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-12 00:16:48,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-12 00:16:48,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:16:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-12 00:16:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-12 00:16:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-12 00:16:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-12 00:16:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-12 00:16:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-12 00:16:48,547 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-12 00:16:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-12 00:16:48,547 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-12 00:16:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-12 00:16:48,547 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-12 00:16:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-12 00:16:48,548 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-12 00:16:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-12 00:16:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-12 00:16:48,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-12 00:16:48,551 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-12 00:16:48,959 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-12 00:16:48,959 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-12 00:16:48,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:16:48 BoogieIcfgContainer [2020-09-12 00:16:48,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-12 00:16:48,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-12 00:16:48,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-12 00:16:48,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-12 00:16:48,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 12:16:47" (1/3) ... [2020-09-12 00:16:48,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c1c6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:16:48, skipping insertion in model container [2020-09-12 00:16:48,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:16:48" (2/3) ... [2020-09-12 00:16:48,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c1c6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:16:48, skipping insertion in model container [2020-09-12 00:16:48,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:16:48" (3/3) ... [2020-09-12 00:16:48,978 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2020-09-12 00:16:48,990 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-12 00:16:48,990 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-12 00:16:49,001 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-12 00:16:49,002 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-12 00:16:49,039 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,039 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,039 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,040 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,040 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,040 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,041 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,041 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,041 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,042 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,042 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,042 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,043 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,043 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,043 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,043 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,044 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,044 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,045 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,045 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,045 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,045 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,046 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,046 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,051 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,051 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,051 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,059 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,059 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,060 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,060 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,062 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,063 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,063 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,063 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,069 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,069 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,070 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,070 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:16:49,092 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-12 00:16:49,115 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:16:49,115 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:16:49,115 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:16:49,116 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:16:49,116 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:16:49,116 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:16:49,116 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:16:49,116 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:16:49,136 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-09-12 00:16:49,138 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-09-12 00:16:49,194 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-09-12 00:16:49,194 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:16:49,202 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-09-12 00:16:49,206 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-09-12 00:16:49,239 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-09-12 00:16:49,240 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:16:49,241 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-09-12 00:16:49,244 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-09-12 00:16:49,246 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:16:50,692 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-12 00:16:50,752 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-09-12 00:16:50,752 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-09-12 00:16:50,757 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-09-12 00:16:50,873 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-09-12 00:16:50,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-09-12 00:16:50,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-12 00:16:50,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:16:50,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:16:50,896 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:16:50,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:16:50,904 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-09-12 00:16:50,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:16:50,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127019591] [2020-09-12 00:16:50,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:16:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:16:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:16:51,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127019591] [2020-09-12 00:16:51,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:16:51,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:16:51,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [508388063] [2020-09-12 00:16:51,162 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:16:51,168 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:16:51,188 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-09-12 00:16:51,189 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:16:51,191 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:16:51,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-12 00:16:51,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:16:51,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-12 00:16:51,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-12 00:16:51,214 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-09-12 00:16:51,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:16:51,273 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-09-12 00:16:51,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-12 00:16:51,275 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-12 00:16:51,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:16:51,316 INFO L225 Difference]: With dead ends: 1450 [2020-09-12 00:16:51,316 INFO L226 Difference]: Without dead ends: 1194 [2020-09-12 00:16:51,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-12 00:16:51,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-09-12 00:16:51,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-09-12 00:16:51,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-09-12 00:16:51,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-09-12 00:16:51,483 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-09-12 00:16:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:16:51,485 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-09-12 00:16:51,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-12 00:16:51,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-09-12 00:16:51,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-12 00:16:51,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:16:51,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:16:51,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-12 00:16:51,492 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:16:51,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:16:51,493 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-09-12 00:16:51,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:16:51,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592868625] [2020-09-12 00:16:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:16:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:16:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:16:51,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592868625] [2020-09-12 00:16:51,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:16:51,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:16:51,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [279431026] [2020-09-12 00:16:51,682 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:16:51,684 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:16:51,686 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-09-12 00:16:51,686 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:16:51,686 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:16:51,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:16:51,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:16:51,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:16:51,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:16:51,689 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-09-12 00:16:51,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:16:51,738 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-09-12 00:16:51,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:16:51,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-12 00:16:51,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:16:51,749 INFO L225 Difference]: With dead ends: 1322 [2020-09-12 00:16:51,749 INFO L226 Difference]: Without dead ends: 1066 [2020-09-12 00:16:51,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:16:51,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-09-12 00:16:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-09-12 00:16:51,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-09-12 00:16:51,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-09-12 00:16:51,844 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-09-12 00:16:51,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:16:51,845 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-09-12 00:16:51,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:16:51,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-09-12 00:16:51,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-12 00:16:51,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:16:51,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:16:51,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-12 00:16:51,848 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:16:51,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:16:51,848 INFO L82 PathProgramCache]: Analyzing trace with hash -426404145, now seen corresponding path program 1 times [2020-09-12 00:16:51,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:16:51,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672116887] [2020-09-12 00:16:51,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:16:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:16:51,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:16:51,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672116887] [2020-09-12 00:16:51,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:16:51,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:16:51,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1260325702] [2020-09-12 00:16:51,945 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:16:51,946 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:16:51,948 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-09-12 00:16:51,948 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:16:52,012 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:16:52,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:16:52,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:16:52,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:16:52,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:16:52,014 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-09-12 00:16:52,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:16:52,045 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-09-12 00:16:52,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:16:52,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-12 00:16:52,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:16:52,054 INFO L225 Difference]: With dead ends: 1162 [2020-09-12 00:16:52,055 INFO L226 Difference]: Without dead ends: 970 [2020-09-12 00:16:52,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:16:52,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-09-12 00:16:52,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-09-12 00:16:52,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-09-12 00:16:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-09-12 00:16:52,093 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-09-12 00:16:52,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:16:52,094 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-09-12 00:16:52,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:16:52,094 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-09-12 00:16:52,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-12 00:16:52,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:16:52,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:16:52,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-12 00:16:52,097 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:16:52,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:16:52,097 INFO L82 PathProgramCache]: Analyzing trace with hash -333650641, now seen corresponding path program 1 times [2020-09-12 00:16:52,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:16:52,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982596996] [2020-09-12 00:16:52,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:16:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:16:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:16:52,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982596996] [2020-09-12 00:16:52,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:16:52,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:16:52,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [867161067] [2020-09-12 00:16:52,189 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:16:52,191 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:16:52,194 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 44 transitions. [2020-09-12 00:16:52,195 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:16:52,296 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:16:52,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:16:52,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:16:52,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:16:52,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:16:52,298 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 5 states. [2020-09-12 00:16:52,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:16:52,350 INFO L93 Difference]: Finished difference Result 1210 states and 4120 transitions. [2020-09-12 00:16:52,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-12 00:16:52,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-12 00:16:52,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:16:52,356 INFO L225 Difference]: With dead ends: 1210 [2020-09-12 00:16:52,356 INFO L226 Difference]: Without dead ends: 586 [2020-09-12 00:16:52,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:16:52,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-09-12 00:16:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2020-09-12 00:16:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-09-12 00:16:52,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1872 transitions. [2020-09-12 00:16:52,378 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1872 transitions. Word has length 13 [2020-09-12 00:16:52,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:16:52,378 INFO L479 AbstractCegarLoop]: Abstraction has 586 states and 1872 transitions. [2020-09-12 00:16:52,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:16:52,379 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1872 transitions. [2020-09-12 00:16:52,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-12 00:16:52,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:16:52,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:16:52,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-12 00:16:52,381 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:16:52,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:16:52,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1296364861, now seen corresponding path program 1 times [2020-09-12 00:16:52,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:16:52,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684063702] [2020-09-12 00:16:52,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:16:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:16:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:16:52,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684063702] [2020-09-12 00:16:52,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:16:52,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:16:52,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [158242482] [2020-09-12 00:16:52,465 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:16:52,466 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:16:52,474 INFO L274 McrAutomatonBuilder]: Finished intersection with 52 states and 100 transitions. [2020-09-12 00:16:52,475 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:16:52,855 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:16:52,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:16:52,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:16:52,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:16:52,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:16:52,856 INFO L87 Difference]: Start difference. First operand 586 states and 1872 transitions. Second operand 4 states. [2020-09-12 00:16:52,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:16:52,877 INFO L93 Difference]: Finished difference Result 622 states and 1938 transitions. [2020-09-12 00:16:52,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:16:52,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-12 00:16:52,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:16:52,882 INFO L225 Difference]: With dead ends: 622 [2020-09-12 00:16:52,883 INFO L226 Difference]: Without dead ends: 550 [2020-09-12 00:16:52,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:16:52,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-09-12 00:16:52,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2020-09-12 00:16:52,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-09-12 00:16:52,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1734 transitions. [2020-09-12 00:16:52,902 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1734 transitions. Word has length 15 [2020-09-12 00:16:52,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:16:52,903 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 1734 transitions. [2020-09-12 00:16:52,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:16:52,903 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1734 transitions. [2020-09-12 00:16:52,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-12 00:16:52,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:16:52,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:16:52,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-12 00:16:52,905 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:16:52,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:16:52,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1532551202, now seen corresponding path program 1 times [2020-09-12 00:16:52,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:16:52,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727963785] [2020-09-12 00:16:52,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:16:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:16:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:16:52,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727963785] [2020-09-12 00:16:52,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:16:52,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:16:52,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [638224992] [2020-09-12 00:16:52,980 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:16:52,982 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:16:52,991 INFO L274 McrAutomatonBuilder]: Finished intersection with 68 states and 144 transitions. [2020-09-12 00:16:52,991 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:16:53,302 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:16:53,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:16:53,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:16:53,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:16:53,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:16:53,303 INFO L87 Difference]: Start difference. First operand 550 states and 1734 transitions. Second operand 5 states. [2020-09-12 00:16:53,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:16:53,345 INFO L93 Difference]: Finished difference Result 760 states and 2337 transitions. [2020-09-12 00:16:53,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-12 00:16:53,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-12 00:16:53,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:16:53,349 INFO L225 Difference]: With dead ends: 760 [2020-09-12 00:16:53,349 INFO L226 Difference]: Without dead ends: 322 [2020-09-12 00:16:53,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:16:53,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-09-12 00:16:53,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2020-09-12 00:16:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-09-12 00:16:53,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 924 transitions. [2020-09-12 00:16:53,360 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 924 transitions. Word has length 16 [2020-09-12 00:16:53,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:16:53,360 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 924 transitions. [2020-09-12 00:16:53,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:16:53,360 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 924 transitions. [2020-09-12 00:16:53,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-12 00:16:53,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:16:53,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:16:53,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-12 00:16:53,362 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:16:53,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:16:53,362 INFO L82 PathProgramCache]: Analyzing trace with hash -59545778, now seen corresponding path program 1 times [2020-09-12 00:16:53,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:16:53,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494828168] [2020-09-12 00:16:53,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:16:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:16:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:16:53,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494828168] [2020-09-12 00:16:53,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:16:53,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:16:53,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1668541330] [2020-09-12 00:16:53,435 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:16:53,437 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:16:53,446 INFO L274 McrAutomatonBuilder]: Finished intersection with 56 states and 98 transitions. [2020-09-12 00:16:53,446 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:16:53,666 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:16:53,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:16:53,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:16:53,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:16:53,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:16:53,668 INFO L87 Difference]: Start difference. First operand 322 states and 924 transitions. Second operand 5 states. [2020-09-12 00:16:53,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:16:53,717 INFO L93 Difference]: Finished difference Result 418 states and 1180 transitions. [2020-09-12 00:16:53,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-12 00:16:53,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-12 00:16:53,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:16:53,719 INFO L225 Difference]: With dead ends: 418 [2020-09-12 00:16:53,719 INFO L226 Difference]: Without dead ends: 148 [2020-09-12 00:16:53,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:16:53,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-09-12 00:16:53,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-09-12 00:16:53,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-09-12 00:16:53,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 398 transitions. [2020-09-12 00:16:53,725 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 398 transitions. Word has length 17 [2020-09-12 00:16:53,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:16:53,725 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 398 transitions. [2020-09-12 00:16:53,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:16:53,726 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 398 transitions. [2020-09-12 00:16:53,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-12 00:16:53,726 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:16:53,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:16:53,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-12 00:16:53,727 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:16:53,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:16:53,727 INFO L82 PathProgramCache]: Analyzing trace with hash 355522076, now seen corresponding path program 1 times [2020-09-12 00:16:53,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:16:53,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17773834] [2020-09-12 00:16:53,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:16:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:16:53,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:16:53,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17773834] [2020-09-12 00:16:53,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:16:53,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:16:53,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2143311791] [2020-09-12 00:16:53,802 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:16:53,804 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:16:53,808 INFO L274 McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions. [2020-09-12 00:16:53,808 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:16:53,830 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:16:53,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-12 00:16:53,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:16:53,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-12 00:16:53,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:16:53,831 INFO L87 Difference]: Start difference. First operand 148 states and 398 transitions. Second operand 5 states. [2020-09-12 00:16:53,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:16:53,866 INFO L93 Difference]: Finished difference Result 124 states and 322 transitions. [2020-09-12 00:16:53,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-12 00:16:53,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-12 00:16:53,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:16:53,867 INFO L225 Difference]: With dead ends: 124 [2020-09-12 00:16:53,867 INFO L226 Difference]: Without dead ends: 0 [2020-09-12 00:16:53,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:16:53,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-12 00:16:53,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-12 00:16:53,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-12 00:16:53,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-12 00:16:53,868 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-12 00:16:53,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:16:53,869 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-12 00:16:53,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-12 00:16:53,869 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-12 00:16:53,869 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-12 00:16:53,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-12 00:16:53,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 12:16:53 BasicIcfg [2020-09-12 00:16:53,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-12 00:16:53,877 INFO L168 Benchmark]: Toolchain (without parser) took 6320.85 ms. Allocated memory was 138.9 MB in the beginning and 307.8 MB in the end (delta: 168.8 MB). Free memory was 100.6 MB in the beginning and 217.7 MB in the end (delta: -117.1 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. [2020-09-12 00:16:53,878 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-12 00:16:53,879 INFO L168 Benchmark]: CACSL2BoogieTranslator took 809.32 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.9 MB in the beginning and 158.8 MB in the end (delta: -58.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-12 00:16:53,880 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.43 ms. Allocated memory is still 202.9 MB. Free memory was 158.8 MB in the beginning and 156.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-12 00:16:53,880 INFO L168 Benchmark]: Boogie Preprocessor took 33.90 ms. Allocated memory is still 202.9 MB. Free memory was 156.8 MB in the beginning and 155.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-12 00:16:53,881 INFO L168 Benchmark]: RCFGBuilder took 498.78 ms. Allocated memory is still 202.9 MB. Free memory was 155.4 MB in the beginning and 130.5 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-12 00:16:53,882 INFO L168 Benchmark]: TraceAbstraction took 4908.49 ms. Allocated memory was 202.9 MB in the beginning and 307.8 MB in the end (delta: 104.9 MB). Free memory was 129.8 MB in the beginning and 217.7 MB in the end (delta: -87.8 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-09-12 00:16:53,886 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 809.32 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.9 MB in the beginning and 158.8 MB in the end (delta: -58.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.43 ms. Allocated memory is still 202.9 MB. Free memory was 158.8 MB in the beginning and 156.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.90 ms. Allocated memory is still 202.9 MB. Free memory was 156.8 MB in the beginning and 155.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 498.78 ms. Allocated memory is still 202.9 MB. Free memory was 155.4 MB in the beginning and 130.5 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4908.49 ms. Allocated memory was 202.9 MB in the beginning and 307.8 MB in the end (delta: 104.9 MB). Free memory was 129.8 MB in the beginning and 217.7 MB in the end (delta: -87.8 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 1043 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4485 CheckedPairsTotal, 67 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 232 SDtfs, 237 SDslu, 337 SDs, 0 SdLazy, 57 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 286 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4169 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...