/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 20:05:45,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 20:05:45,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 20:05:45,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 20:05:45,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 20:05:45,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 20:05:45,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 20:05:45,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 20:05:45,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 20:05:45,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 20:05:45,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 20:05:46,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 20:05:46,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 20:05:46,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 20:05:46,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 20:05:46,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 20:05:46,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 20:05:46,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 20:05:46,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 20:05:46,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 20:05:46,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 20:05:46,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 20:05:46,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 20:05:46,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 20:05:46,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 20:05:46,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 20:05:46,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 20:05:46,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 20:05:46,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 20:05:46,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 20:05:46,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 20:05:46,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 20:05:46,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 20:05:46,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 20:05:46,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 20:05:46,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 20:05:46,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 20:05:46,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 20:05:46,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 20:05:46,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 20:05:46,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 20:05:46,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf [2020-04-18 20:05:46,042 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 20:05:46,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 20:05:46,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 20:05:46,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 20:05:46,044 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 20:05:46,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 20:05:46,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 20:05:46,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 20:05:46,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 20:05:46,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 20:05:46,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 20:05:46,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 20:05:46,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 20:05:46,046 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 20:05:46,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 20:05:46,046 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 20:05:46,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 20:05:46,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 20:05:46,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 20:05:46,047 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 20:05:46,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 20:05:46,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 20:05:46,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 20:05:46,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 20:05:46,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 20:05:46,048 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 20:05:46,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 20:05:46,049 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 20:05:46,049 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 20:05:46,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 20:05:46,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 20:05:46,375 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 20:05:46,388 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 20:05:46,392 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 20:05:46,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 20:05:46,395 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 20:05:46,395 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_pso.opt.i [2020-04-18 20:05:46,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24cd060b6/d3a22cb31039470ab912f68bade1d886/FLAG9fda1a104 [2020-04-18 20:05:47,037 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 20:05:47,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_pso.opt.i [2020-04-18 20:05:47,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24cd060b6/d3a22cb31039470ab912f68bade1d886/FLAG9fda1a104 [2020-04-18 20:05:47,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24cd060b6/d3a22cb31039470ab912f68bade1d886 [2020-04-18 20:05:47,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 20:05:47,374 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 20:05:47,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 20:05:47,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 20:05:47,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 20:05:47,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:05:47" (1/1) ... [2020-04-18 20:05:47,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c3f40f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:47, skipping insertion in model container [2020-04-18 20:05:47,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:05:47" (1/1) ... [2020-04-18 20:05:47,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 20:05:47,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 20:05:47,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:05:47,959 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 20:05:48,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:05:48,092 INFO L208 MainTranslator]: Completed translation [2020-04-18 20:05:48,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:48 WrapperNode [2020-04-18 20:05:48,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 20:05:48,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 20:05:48,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 20:05:48,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 20:05:48,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:48" (1/1) ... [2020-04-18 20:05:48,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:48" (1/1) ... [2020-04-18 20:05:48,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 20:05:48,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 20:05:48,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 20:05:48,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 20:05:48,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:48" (1/1) ... [2020-04-18 20:05:48,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:48" (1/1) ... [2020-04-18 20:05:48,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:48" (1/1) ... [2020-04-18 20:05:48,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:48" (1/1) ... [2020-04-18 20:05:48,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:48" (1/1) ... [2020-04-18 20:05:48,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:48" (1/1) ... [2020-04-18 20:05:48,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:48" (1/1) ... [2020-04-18 20:05:48,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 20:05:48,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 20:05:48,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 20:05:48,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 20:05:48,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 20:05:48,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 20:05:48,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 20:05:48,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 20:05:48,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 20:05:48,227 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 20:05:48,227 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 20:05:48,228 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 20:05:48,228 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 20:05:48,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 20:05:48,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 20:05:48,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 20:05:48,230 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 20:05:48,625 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 20:05:48,625 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 20:05:48,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:05:48 BoogieIcfgContainer [2020-04-18 20:05:48,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 20:05:48,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 20:05:48,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 20:05:48,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 20:05:48,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:05:47" (1/3) ... [2020-04-18 20:05:48,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77dde343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:05:48, skipping insertion in model container [2020-04-18 20:05:48,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:05:48" (2/3) ... [2020-04-18 20:05:48,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77dde343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:05:48, skipping insertion in model container [2020-04-18 20:05:48,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:05:48" (3/3) ... [2020-04-18 20:05:48,638 INFO L109 eAbstractionObserver]: Analyzing ICFG safe036_pso.opt.i [2020-04-18 20:05:48,648 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 20:05:48,649 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 20:05:48,655 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 20:05:48,656 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 20:05:48,678 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,679 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,679 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,679 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,679 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,679 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,680 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,681 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,681 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,681 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,682 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,682 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,686 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,686 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,687 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,687 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,693 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,693 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,693 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,693 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:05:48,707 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 20:05:48,723 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 20:05:48,724 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 20:05:48,724 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 20:05:48,724 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 20:05:48,724 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 20:05:48,724 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 20:05:48,725 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 20:05:48,725 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 20:05:48,737 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 56 transitions, 122 flow [2020-04-18 20:05:48,811 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1121 states. [2020-04-18 20:05:48,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states. [2020-04-18 20:05:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 20:05:48,833 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:48,834 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:05:48,835 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:48,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:48,842 INFO L82 PathProgramCache]: Analyzing trace with hash -328445311, now seen corresponding path program 1 times [2020-04-18 20:05:48,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:48,850 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [658691274] [2020-04-18 20:05:48,866 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:48,879 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 31 transitions. [2020-04-18 20:05:48,881 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 20:05:48,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-04-18 20:05:48,882 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:48,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:48,883 INFO L82 PathProgramCache]: Analyzing trace with hash -328445311, now seen corresponding path program 2 times [2020-04-18 20:05:48,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:48,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255960826] [2020-04-18 20:05:48,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:05:49,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255960826] [2020-04-18 20:05:49,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:49,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:05:49,401 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:49,405 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:49,420 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 31 transitions. [2020-04-18 20:05:49,421 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:49,477 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:05:49,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:49,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:05:49,485 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 6 states. [2020-04-18 20:05:49,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:49,601 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2020-04-18 20:05:49,601 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2020-04-18 20:05:49,602 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:49,603 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [658691274] [2020-04-18 20:05:49,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:49,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:05:49,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [658691274] [2020-04-18 20:05:49,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 20:05:49,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:49,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:05:49,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:05:49,613 INFO L87 Difference]: Start difference. First operand 1121 states. Second operand 6 states. [2020-04-18 20:05:49,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:49,767 INFO L93 Difference]: Finished difference Result 1046 states and 2616 transitions. [2020-04-18 20:05:49,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 20:05:49,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-04-18 20:05:49,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:49,792 INFO L225 Difference]: With dead ends: 1046 [2020-04-18 20:05:49,792 INFO L226 Difference]: Without dead ends: 504 [2020-04-18 20:05:49,796 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 20:05:49,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-04-18 20:05:49,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-04-18 20:05:49,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-04-18 20:05:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1219 transitions. [2020-04-18 20:05:49,895 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1219 transitions. Word has length 31 [2020-04-18 20:05:49,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:49,896 INFO L479 AbstractCegarLoop]: Abstraction has 504 states and 1219 transitions. [2020-04-18 20:05:49,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 20:05:49,896 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1219 transitions. [2020-04-18 20:05:49,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 20:05:49,899 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:49,900 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:05:49,900 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:49,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:49,901 INFO L82 PathProgramCache]: Analyzing trace with hash 2045091331, now seen corresponding path program 1 times [2020-04-18 20:05:49,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:49,901 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2106913370] [2020-04-18 20:05:49,902 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:49,904 INFO L259 McrAutomatonBuilder]: Finished intersection with 100 states and 163 transitions. [2020-04-18 20:05:49,905 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2020-04-18 20:05:49,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 20:05:49,906 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:49,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:49,907 INFO L82 PathProgramCache]: Analyzing trace with hash 2045091331, now seen corresponding path program 2 times [2020-04-18 20:05:49,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:49,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412178410] [2020-04-18 20:05:49,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:05:50,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412178410] [2020-04-18 20:05:50,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:50,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:50,089 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:50,092 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:50,097 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 75 transitions. [2020-04-18 20:05:50,098 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:50,144 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:05:50,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:05:50,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:05:50,145 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 7 states. [2020-04-18 20:05:50,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:50,289 INFO L93 Difference]: Finished difference Result 100 states and 163 transitions. [2020-04-18 20:05:50,289 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 163 transitions. [2020-04-18 20:05:50,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:50,291 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2106913370] [2020-04-18 20:05:50,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:50,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:05:50,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2106913370] [2020-04-18 20:05:50,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 20:05:50,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:50,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:05:50,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-04-18 20:05:50,295 INFO L87 Difference]: Start difference. First operand 504 states and 1219 transitions. Second operand 7 states. [2020-04-18 20:05:50,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:50,409 INFO L93 Difference]: Finished difference Result 372 states and 846 transitions. [2020-04-18 20:05:50,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 20:05:50,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-04-18 20:05:50,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:50,413 INFO L225 Difference]: With dead ends: 372 [2020-04-18 20:05:50,413 INFO L226 Difference]: Without dead ends: 240 [2020-04-18 20:05:50,418 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 20:05:50,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-04-18 20:05:50,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2020-04-18 20:05:50,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-04-18 20:05:50,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 515 transitions. [2020-04-18 20:05:50,446 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 515 transitions. Word has length 35 [2020-04-18 20:05:50,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:50,447 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 515 transitions. [2020-04-18 20:05:50,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 20:05:50,447 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 515 transitions. [2020-04-18 20:05:50,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 20:05:50,448 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:05:50,449 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:05:50,449 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:05:50,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:50,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1256214719, now seen corresponding path program 1 times [2020-04-18 20:05:50,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:05:50,452 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [605552994] [2020-04-18 20:05:50,453 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:50,460 INFO L259 McrAutomatonBuilder]: Finished intersection with 360 states and 871 transitions. [2020-04-18 20:05:50,467 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states. [2020-04-18 20:05:50,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 20:05:50,472 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:05:50,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:50,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1303635963, now seen corresponding path program 2 times [2020-04-18 20:05:50,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:50,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833168076] [2020-04-18 20:05:50,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:05:50,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833168076] [2020-04-18 20:05:50,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:50,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:50,696 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:50,700 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:50,715 INFO L259 McrAutomatonBuilder]: Finished intersection with 104 states and 172 transitions. [2020-04-18 20:05:50,715 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:50,759 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:05:50,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:05:50,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:05:50,760 INFO L87 Difference]: Start difference. First operand 360 states. Second operand 7 states. [2020-04-18 20:05:51,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:51,026 INFO L93 Difference]: Finished difference Result 370 states and 880 transitions. [2020-04-18 20:05:51,026 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 880 transitions. [2020-04-18 20:05:51,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 20:05:51,028 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:05:51,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:51,029 INFO L82 PathProgramCache]: Analyzing trace with hash -385252347, now seen corresponding path program 3 times [2020-04-18 20:05:51,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:51,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181769030] [2020-04-18 20:05:51,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:51,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:05:51,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181769030] [2020-04-18 20:05:51,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:51,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:51,190 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:51,194 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:51,202 INFO L259 McrAutomatonBuilder]: Finished intersection with 100 states and 165 transitions. [2020-04-18 20:05:51,203 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:51,300 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 20:05:51,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:05:51,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-04-18 20:05:51,302 INFO L87 Difference]: Start difference. First operand 370 states and 880 transitions. Second operand 7 states. [2020-04-18 20:05:51,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:51,542 INFO L93 Difference]: Finished difference Result 510 states and 1156 transitions. [2020-04-18 20:05:51,542 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1156 transitions. [2020-04-18 20:05:51,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 20:05:51,544 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:05:51,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:51,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1684567803, now seen corresponding path program 4 times [2020-04-18 20:05:51,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:51,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138447329] [2020-04-18 20:05:51,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:05:51,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138447329] [2020-04-18 20:05:51,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:51,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:05:51,719 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:51,722 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:51,756 INFO L259 McrAutomatonBuilder]: Finished intersection with 144 states and 281 transitions. [2020-04-18 20:05:51,756 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:51,835 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 20:05:51,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 20:05:51,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2020-04-18 20:05:51,836 INFO L87 Difference]: Start difference. First operand 510 states and 1156 transitions. Second operand 9 states. [2020-04-18 20:05:51,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:51,977 INFO L93 Difference]: Finished difference Result 596 states and 1309 transitions. [2020-04-18 20:05:51,977 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 1309 transitions. [2020-04-18 20:05:51,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 20:05:51,980 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 20:05:51,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:05:51,980 INFO L82 PathProgramCache]: Analyzing trace with hash 341612163, now seen corresponding path program 5 times [2020-04-18 20:05:51,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:05:51,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969677213] [2020-04-18 20:05:51,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:05:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:05:52,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:05:52,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969677213] [2020-04-18 20:05:52,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:05:52,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:05:52,098 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:05:52,102 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:05:52,114 INFO L259 McrAutomatonBuilder]: Finished intersection with 136 states and 261 transitions. [2020-04-18 20:05:52,115 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:05:52,175 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 20:05:52,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:05:52,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 20:05:52,177 INFO L87 Difference]: Start difference. First operand 596 states and 1309 transitions. Second operand 7 states. [2020-04-18 20:05:52,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:52,290 INFO L93 Difference]: Finished difference Result 776 states and 1653 transitions. [2020-04-18 20:05:52,290 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1653 transitions. [2020-04-18 20:05:52,292 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:52,293 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [605552994] [2020-04-18 20:05:52,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:05:52,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:05:52,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [605552994] [2020-04-18 20:05:52,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 20:05:52,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:05:52,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 20:05:52,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1174, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 20:05:52,295 INFO L87 Difference]: Start difference. First operand 240 states and 515 transitions. Second operand 16 states. [2020-04-18 20:05:53,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:05:53,132 INFO L93 Difference]: Finished difference Result 464 states and 1015 transitions. [2020-04-18 20:05:53,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-04-18 20:05:53,132 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2020-04-18 20:05:53,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:05:53,132 INFO L225 Difference]: With dead ends: 464 [2020-04-18 20:05:53,133 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 20:05:53,134 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=649, Invalid=3133, Unknown=0, NotChecked=0, Total=3782 [2020-04-18 20:05:53,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 20:05:53,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 20:05:53,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 20:05:53,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 20:05:53,135 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2020-04-18 20:05:53,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:05:53,135 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 20:05:53,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 20:05:53,136 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 20:05:53,136 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:05:53,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 08:05:53 BasicIcfg [2020-04-18 20:05:53,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 20:05:53,144 INFO L168 Benchmark]: Toolchain (without parser) took 5786.37 ms. Allocated memory was 144.7 MB in the beginning and 295.7 MB in the end (delta: 151.0 MB). Free memory was 101.6 MB in the beginning and 195.9 MB in the end (delta: -94.4 MB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:53,145 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 20:05:53,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.88 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 99.7 MB in the beginning and 159.4 MB in the end (delta: -59.7 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:53,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.35 ms. Allocated memory is still 202.4 MB. Free memory was 159.4 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:53,147 INFO L168 Benchmark]: Boogie Preprocessor took 27.61 ms. Allocated memory is still 202.4 MB. Free memory was 157.4 MB in the beginning and 156.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:53,148 INFO L168 Benchmark]: RCFGBuilder took 462.94 ms. Allocated memory is still 202.4 MB. Free memory was 155.3 MB in the beginning and 136.1 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:53,149 INFO L168 Benchmark]: TraceAbstraction took 4510.51 ms. Allocated memory was 202.4 MB in the beginning and 295.7 MB in the end (delta: 93.3 MB). Free memory was 135.4 MB in the beginning and 195.9 MB in the end (delta: -60.5 MB). Peak memory consumption was 32.8 MB. Max. memory is 7.1 GB. [2020-04-18 20:05:53,153 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 717.88 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 99.7 MB in the beginning and 159.4 MB in the end (delta: -59.7 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.35 ms. Allocated memory is still 202.4 MB. Free memory was 159.4 MB in the beginning and 157.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.61 ms. Allocated memory is still 202.4 MB. Free memory was 157.4 MB in the beginning and 156.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.94 ms. Allocated memory is still 202.4 MB. Free memory was 155.3 MB in the beginning and 136.1 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4510.51 ms. Allocated memory was 202.4 MB in the beginning and 295.7 MB in the end (delta: 93.3 MB). Free memory was 135.4 MB in the beginning and 195.9 MB in the end (delta: -60.5 MB). Peak memory consumption was 32.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 216 SDtfs, 413 SDslu, 1174 SDs, 0 SdLazy, 272 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 338 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1070 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1121occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...