/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/safe013_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:31:29,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:31:29,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:31:29,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:31:29,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:31:29,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:31:29,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:31:29,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:31:29,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:31:29,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:31:29,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:31:29,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:31:29,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:31:29,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:31:29,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:31:29,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:31:29,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:31:29,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:31:29,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:31:29,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:31:29,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:31:29,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:31:29,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:31:29,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:31:29,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:31:29,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:31:29,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:31:29,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:31:29,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:31:29,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:31:29,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:31:29,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:31:29,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:31:29,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:31:29,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:31:29,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:31:29,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:31:29,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:31:29,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:31:29,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:31:29,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:31:29,834 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 19:31:29,852 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:31:29,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:31:29,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:31:29,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:31:29,857 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:31:29,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:31:29,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:31:29,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:31:29,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:31:29,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:31:29,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:31:29,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:31:29,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:31:29,859 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:31:29,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:31:29,860 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:31:29,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:31:29,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:31:29,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:31:29,861 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:31:29,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:31:29,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:31:29,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:31:29,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:31:29,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:31:29,862 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:31:29,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:31:29,862 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:31:29,862 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:31:29,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:31:29,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:31:30,173 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:31:30,195 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:31:30,199 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:31:30,200 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:31:30,200 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:31:30,201 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-04-18 19:31:30,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/236f5a3a8/fd79732749d44eb89af254270242116a/FLAG6e151feb4 [2020-04-18 19:31:30,826 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:31:30,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-04-18 19:31:30,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/236f5a3a8/fd79732749d44eb89af254270242116a/FLAG6e151feb4 [2020-04-18 19:31:31,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/236f5a3a8/fd79732749d44eb89af254270242116a [2020-04-18 19:31:31,161 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:31:31,181 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:31:31,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:31:31,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:31:31,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:31:31,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:31:31" (1/1) ... [2020-04-18 19:31:31,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0d1ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:31:31, skipping insertion in model container [2020-04-18 19:31:31,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:31:31" (1/1) ... [2020-04-18 19:31:31,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:31:31,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:31:31,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:31:31,735 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:31:31,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:31:31,854 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:31:31,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:31:31 WrapperNode [2020-04-18 19:31:31,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:31:31,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:31:31,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:31:31,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:31:31,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:31:31" (1/1) ... [2020-04-18 19:31:31,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:31:31" (1/1) ... [2020-04-18 19:31:31,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:31:31,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:31:31,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:31:31,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:31:31,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:31:31" (1/1) ... [2020-04-18 19:31:31,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:31:31" (1/1) ... [2020-04-18 19:31:31,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:31:31" (1/1) ... [2020-04-18 19:31:31,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:31:31" (1/1) ... [2020-04-18 19:31:31,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:31:31" (1/1) ... [2020-04-18 19:31:31,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:31:31" (1/1) ... [2020-04-18 19:31:31,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:31:31" (1/1) ... [2020-04-18 19:31:31,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:31:31,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:31:31,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:31:31,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:31:31,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:31:31" (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 19:31:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:31:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:31:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:31:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:31:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:31:31,994 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:31:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:31:31,995 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:31:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:31:31,996 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:31:31,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:31:31,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:31:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:31:31,999 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 19:31:32,335 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:31:32,336 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:31:32,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:31:32 BoogieIcfgContainer [2020-04-18 19:31:32,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:31:32,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:31:32,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:31:32,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:31:32,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:31:31" (1/3) ... [2020-04-18 19:31:32,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c8539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:31:32, skipping insertion in model container [2020-04-18 19:31:32,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:31:31" (2/3) ... [2020-04-18 19:31:32,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c8539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:31:32, skipping insertion in model container [2020-04-18 19:31:32,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:31:32" (3/3) ... [2020-04-18 19:31:32,348 INFO L109 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2020-04-18 19:31:32,358 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:31:32,358 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:31:32,364 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:31:32,365 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:31:32,399 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,400 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,400 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,401 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,402 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,402 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,403 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,403 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,403 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,403 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,404 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,404 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,404 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,405 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,405 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,405 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,406 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,406 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,413 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,413 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,414 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,414 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,423 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,423 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,424 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,424 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,426 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,427 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,427 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,428 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:31:32,456 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:31:32,472 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:31:32,472 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:31:32,472 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:31:32,473 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:31:32,473 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:31:32,473 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:31:32,473 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:31:32,473 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:31:32,486 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 19:31:33,033 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 19:31:33,035 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 19:31:33,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:31:33,062 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:31:33,063 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] [2020-04-18 19:31:33,063 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:31:33,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:33,070 INFO L82 PathProgramCache]: Analyzing trace with hash 257296303, now seen corresponding path program 1 times [2020-04-18 19:31:33,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:31:33,077 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [35577411] [2020-04-18 19:31:33,093 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:33,108 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:31:33,110 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 19:31:33,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:31:33,111 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:31:33,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:33,112 INFO L82 PathProgramCache]: Analyzing trace with hash 257296303, now seen corresponding path program 2 times [2020-04-18 19:31:33,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:31:33,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354065377] [2020-04-18 19:31:33,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:31:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:31:33,580 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 19:31:33,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354065377] [2020-04-18 19:31:33,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:31:33,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:31:33,583 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:31:33,587 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:33,600 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:31:33,600 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:31:33,664 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:31:33,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:31:33,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:31:33,670 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-04-18 19:31:33,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:33,786 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 19:31:33,786 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 19:31:33,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:31:33,787 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [35577411] [2020-04-18 19:31:33,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:31:33,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:31:33,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [35577411] [2020-04-18 19:31:33,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:31:33,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:31:33,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:31:33,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:31:33,798 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 19:31:34,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:34,190 INFO L93 Difference]: Finished difference Result 18146 states and 62610 transitions. [2020-04-18 19:31:34,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:31:34,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 19:31:34,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:31:34,267 INFO L225 Difference]: With dead ends: 18146 [2020-04-18 19:31:34,267 INFO L226 Difference]: Without dead ends: 5567 [2020-04-18 19:31:34,270 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 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 19:31:34,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5567 states. [2020-04-18 19:31:34,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5567 to 4727. [2020-04-18 19:31:34,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4727 states. [2020-04-18 19:31:34,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4727 states to 4727 states and 15961 transitions. [2020-04-18 19:31:34,665 INFO L78 Accepts]: Start accepts. Automaton has 4727 states and 15961 transitions. Word has length 36 [2020-04-18 19:31:34,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:31:34,670 INFO L479 AbstractCegarLoop]: Abstraction has 4727 states and 15961 transitions. [2020-04-18 19:31:34,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:31:34,677 INFO L276 IsEmpty]: Start isEmpty. Operand 4727 states and 15961 transitions. [2020-04-18 19:31:34,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:31:34,689 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:31:34,695 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] [2020-04-18 19:31:34,695 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:31:34,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:34,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1122211280, now seen corresponding path program 1 times [2020-04-18 19:31:34,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:31:34,697 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1339092976] [2020-04-18 19:31:34,698 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:34,700 INFO L259 McrAutomatonBuilder]: Finished intersection with 79 states and 118 transitions. [2020-04-18 19:31:34,703 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-04-18 19:31:34,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:31:34,705 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:31:34,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:34,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1122211280, now seen corresponding path program 2 times [2020-04-18 19:31:34,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:31:34,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128992437] [2020-04-18 19:31:34,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:31:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:31:34,889 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 19:31:34,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128992437] [2020-04-18 19:31:34,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:31:34,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:31:34,890 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:31:34,894 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:34,900 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 94 transitions. [2020-04-18 19:31:34,900 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:31:34,934 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:31:34,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:31:34,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:31:34,935 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 6 states. [2020-04-18 19:31:34,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:34,991 INFO L93 Difference]: Finished difference Result 79 states and 118 transitions. [2020-04-18 19:31:34,992 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-04-18 19:31:34,992 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:31:34,992 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1339092976] [2020-04-18 19:31:34,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:31:34,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:31:34,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1339092976] [2020-04-18 19:31:34,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:31:34,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:31:34,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:31:34,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:31:34,995 INFO L87 Difference]: Start difference. First operand 4727 states and 15961 transitions. Second operand 6 states. [2020-04-18 19:31:35,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:35,178 INFO L93 Difference]: Finished difference Result 5287 states and 17694 transitions. [2020-04-18 19:31:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:31:35,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-04-18 19:31:35,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:31:35,210 INFO L225 Difference]: With dead ends: 5287 [2020-04-18 19:31:35,210 INFO L226 Difference]: Without dead ends: 4307 [2020-04-18 19:31:35,226 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 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 19:31:35,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4307 states. [2020-04-18 19:31:35,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4307 to 4307. [2020-04-18 19:31:35,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4307 states. [2020-04-18 19:31:35,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 14425 transitions. [2020-04-18 19:31:35,379 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 14425 transitions. Word has length 38 [2020-04-18 19:31:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:31:35,380 INFO L479 AbstractCegarLoop]: Abstraction has 4307 states and 14425 transitions. [2020-04-18 19:31:35,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:31:35,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 14425 transitions. [2020-04-18 19:31:35,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:31:35,389 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:31:35,389 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] [2020-04-18 19:31:35,389 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:31:35,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:35,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1623074190, now seen corresponding path program 1 times [2020-04-18 19:31:35,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:31:35,470 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1907088545] [2020-04-18 19:31:35,472 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:35,473 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 86 transitions. [2020-04-18 19:31:35,474 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-04-18 19:31:35,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:31:35,475 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:31:35,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:35,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1623074190, now seen corresponding path program 2 times [2020-04-18 19:31:35,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:31:35,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386207359] [2020-04-18 19:31:35,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:31:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:31:35,605 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 19:31:35,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386207359] [2020-04-18 19:31:35,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:31:35,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:31:35,606 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:31:35,609 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:35,614 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 62 transitions. [2020-04-18 19:31:35,614 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:31:35,673 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 19:31:35,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:31:35,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:31:35,674 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 7 states. [2020-04-18 19:31:35,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:35,734 INFO L93 Difference]: Finished difference Result 63 states and 86 transitions. [2020-04-18 19:31:35,734 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2020-04-18 19:31:35,735 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:31:35,735 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1907088545] [2020-04-18 19:31:35,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:31:35,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:31:35,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1907088545] [2020-04-18 19:31:35,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:31:35,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:31:35,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:31:35,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:31:35,737 INFO L87 Difference]: Start difference. First operand 4307 states and 14425 transitions. Second operand 7 states. [2020-04-18 19:31:35,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:35,949 INFO L93 Difference]: Finished difference Result 6267 states and 20648 transitions. [2020-04-18 19:31:35,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:31:35,950 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-04-18 19:31:35,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:31:35,983 INFO L225 Difference]: With dead ends: 6267 [2020-04-18 19:31:35,983 INFO L226 Difference]: Without dead ends: 4727 [2020-04-18 19:31:35,983 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:31:36,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2020-04-18 19:31:36,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 3887. [2020-04-18 19:31:36,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3887 states. [2020-04-18 19:31:36,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3887 states to 3887 states and 12945 transitions. [2020-04-18 19:31:36,125 INFO L78 Accepts]: Start accepts. Automaton has 3887 states and 12945 transitions. Word has length 38 [2020-04-18 19:31:36,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:31:36,126 INFO L479 AbstractCegarLoop]: Abstraction has 3887 states and 12945 transitions. [2020-04-18 19:31:36,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:31:36,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3887 states and 12945 transitions. [2020-04-18 19:31:36,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:31:36,136 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:31:36,137 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, 1] [2020-04-18 19:31:36,141 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:31:36,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:36,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1233785905, now seen corresponding path program 1 times [2020-04-18 19:31:36,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:31:36,142 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1464631456] [2020-04-18 19:31:36,145 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:36,148 INFO L259 McrAutomatonBuilder]: Finished intersection with 157 states and 320 transitions. [2020-04-18 19:31:36,150 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-04-18 19:31:36,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:31:36,151 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:31:36,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:36,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1233785905, now seen corresponding path program 2 times [2020-04-18 19:31:36,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:31:36,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350169113] [2020-04-18 19:31:36,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:31:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:31:36,333 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 19:31:36,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350169113] [2020-04-18 19:31:36,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:31:36,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:31:36,334 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:31:36,338 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:36,349 INFO L259 McrAutomatonBuilder]: Finished intersection with 109 states and 200 transitions. [2020-04-18 19:31:36,349 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:31:36,402 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 19:31:36,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:31:36,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:31:36,403 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 7 states. [2020-04-18 19:31:36,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:36,503 INFO L93 Difference]: Finished difference Result 157 states and 320 transitions. [2020-04-18 19:31:36,503 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 320 transitions. [2020-04-18 19:31:36,504 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:31:36,504 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1464631456] [2020-04-18 19:31:36,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:31:36,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:31:36,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1464631456] [2020-04-18 19:31:36,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:31:36,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:31:36,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:31:36,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:31:36,506 INFO L87 Difference]: Start difference. First operand 3887 states and 12945 transitions. Second operand 7 states. [2020-04-18 19:31:37,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:37,055 INFO L93 Difference]: Finished difference Result 5229 states and 17208 transitions. [2020-04-18 19:31:37,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:31:37,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-04-18 19:31:37,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:31:37,066 INFO L225 Difference]: With dead ends: 5229 [2020-04-18 19:31:37,066 INFO L226 Difference]: Without dead ends: 2618 [2020-04-18 19:31:37,067 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-04-18 19:31:37,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2020-04-18 19:31:37,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2618. [2020-04-18 19:31:37,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2618 states. [2020-04-18 19:31:37,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 8376 transitions. [2020-04-18 19:31:37,146 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 8376 transitions. Word has length 40 [2020-04-18 19:31:37,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:31:37,146 INFO L479 AbstractCegarLoop]: Abstraction has 2618 states and 8376 transitions. [2020-04-18 19:31:37,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:31:37,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 8376 transitions. [2020-04-18 19:31:37,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:31:37,153 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:31:37,154 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, 1, 1, 1, 1] [2020-04-18 19:31:37,154 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:31:37,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:37,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1999869972, now seen corresponding path program 1 times [2020-04-18 19:31:37,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:31:37,155 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1782274581] [2020-04-18 19:31:37,157 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:37,169 INFO L259 McrAutomatonBuilder]: Finished intersection with 544 states and 1559 transitions. [2020-04-18 19:31:37,173 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states. [2020-04-18 19:31:37,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:31:37,175 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:31:37,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:37,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1999869972, now seen corresponding path program 2 times [2020-04-18 19:31:37,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:31:37,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814600309] [2020-04-18 19:31:37,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:31:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:31:37,290 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 19:31:37,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814600309] [2020-04-18 19:31:37,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:31:37,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:31:37,291 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:31:37,295 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:37,330 INFO L259 McrAutomatonBuilder]: Finished intersection with 271 states and 677 transitions. [2020-04-18 19:31:37,330 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:31:37,387 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 28 times. [2020-04-18 19:31:37,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:31:37,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:31:37,388 INFO L87 Difference]: Start difference. First operand 544 states. Second operand 6 states. [2020-04-18 19:31:37,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:37,440 INFO L93 Difference]: Finished difference Result 544 states and 1559 transitions. [2020-04-18 19:31:37,440 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1559 transitions. [2020-04-18 19:31:37,441 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:31:37,442 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1782274581] [2020-04-18 19:31:37,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:31:37,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:31:37,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1782274581] [2020-04-18 19:31:37,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:31:37,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:31:37,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:31:37,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:31:37,443 INFO L87 Difference]: Start difference. First operand 2618 states and 8376 transitions. Second operand 6 states. [2020-04-18 19:31:37,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:37,535 INFO L93 Difference]: Finished difference Result 3405 states and 10752 transitions. [2020-04-18 19:31:37,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:31:37,536 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-04-18 19:31:37,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:31:37,556 INFO L225 Difference]: With dead ends: 3405 [2020-04-18 19:31:37,556 INFO L226 Difference]: Without dead ends: 2389 [2020-04-18 19:31:37,557 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 69 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 19:31:37,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2020-04-18 19:31:37,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2389. [2020-04-18 19:31:37,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2389 states. [2020-04-18 19:31:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 7525 transitions. [2020-04-18 19:31:37,628 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 7525 transitions. Word has length 43 [2020-04-18 19:31:37,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:31:37,628 INFO L479 AbstractCegarLoop]: Abstraction has 2389 states and 7525 transitions. [2020-04-18 19:31:37,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:31:37,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 7525 transitions. [2020-04-18 19:31:37,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:31:37,634 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:31:37,634 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, 1, 1, 1, 1, 1] [2020-04-18 19:31:37,635 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:31:37,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:37,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1628273071, now seen corresponding path program 1 times [2020-04-18 19:31:37,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:31:37,635 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2043113272] [2020-04-18 19:31:37,637 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:37,651 INFO L259 McrAutomatonBuilder]: Finished intersection with 673 states and 1972 transitions. [2020-04-18 19:31:37,655 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states. [2020-04-18 19:31:37,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:31:37,657 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:31:37,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:37,658 INFO L82 PathProgramCache]: Analyzing trace with hash -618461267, now seen corresponding path program 2 times [2020-04-18 19:31:37,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:31:37,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102189267] [2020-04-18 19:31:37,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:31:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:31:37,861 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 19:31:37,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102189267] [2020-04-18 19:31:37,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:31:37,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:31:37,863 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:31:37,867 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:37,892 INFO L259 McrAutomatonBuilder]: Finished intersection with 196 states and 426 transitions. [2020-04-18 19:31:37,892 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:31:37,935 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:31:37,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:31:37,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:31:37,936 INFO L87 Difference]: Start difference. First operand 673 states. Second operand 7 states. [2020-04-18 19:31:38,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:38,049 INFO L93 Difference]: Finished difference Result 763 states and 2179 transitions. [2020-04-18 19:31:38,050 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 2179 transitions. [2020-04-18 19:31:38,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:31:38,052 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:31:38,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:38,052 INFO L82 PathProgramCache]: Analyzing trace with hash 628984899, now seen corresponding path program 3 times [2020-04-18 19:31:38,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:31:38,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545266600] [2020-04-18 19:31:38,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:31:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:31:38,151 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 19:31:38,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545266600] [2020-04-18 19:31:38,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:31:38,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:31:38,152 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:31:38,156 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:38,184 INFO L259 McrAutomatonBuilder]: Finished intersection with 211 states and 475 transitions. [2020-04-18 19:31:38,185 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:31:38,332 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 21 times. [2020-04-18 19:31:38,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:31:38,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:31:38,333 INFO L87 Difference]: Start difference. First operand 763 states and 2179 transitions. Second operand 8 states. [2020-04-18 19:31:38,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:38,478 INFO L93 Difference]: Finished difference Result 763 states and 2179 transitions. [2020-04-18 19:31:38,479 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 2179 transitions. [2020-04-18 19:31:38,480 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:31:38,481 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2043113272] [2020-04-18 19:31:38,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:31:38,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:31:38,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2043113272] [2020-04-18 19:31:38,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 19:31:38,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:31:38,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:31:38,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:31:38,483 INFO L87 Difference]: Start difference. First operand 2389 states and 7525 transitions. Second operand 13 states. [2020-04-18 19:31:38,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:38,987 INFO L93 Difference]: Finished difference Result 2833 states and 8661 transitions. [2020-04-18 19:31:38,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-18 19:31:38,987 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-04-18 19:31:38,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:31:38,994 INFO L225 Difference]: With dead ends: 2833 [2020-04-18 19:31:38,994 INFO L226 Difference]: Without dead ends: 1981 [2020-04-18 19:31:38,995 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=306, Invalid=1334, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 19:31:39,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2020-04-18 19:31:39,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1765. [2020-04-18 19:31:39,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1765 states. [2020-04-18 19:31:39,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 5312 transitions. [2020-04-18 19:31:39,045 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 5312 transitions. Word has length 44 [2020-04-18 19:31:39,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:31:39,045 INFO L479 AbstractCegarLoop]: Abstraction has 1765 states and 5312 transitions. [2020-04-18 19:31:39,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 19:31:39,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 5312 transitions. [2020-04-18 19:31:39,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:31:39,051 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:31:39,051 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, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:31:39,051 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:31:39,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:39,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1107359960, now seen corresponding path program 1 times [2020-04-18 19:31:39,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:31:39,052 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [864622783] [2020-04-18 19:31:39,054 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:39,080 INFO L259 McrAutomatonBuilder]: Finished intersection with 1111 states and 3422 transitions. [2020-04-18 19:31:39,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states. [2020-04-18 19:31:39,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:31:39,091 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:31:39,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:39,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1139374378, now seen corresponding path program 2 times [2020-04-18 19:31:39,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:31:39,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665349357] [2020-04-18 19:31:39,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:31:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:31:39,245 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 19:31:39,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665349357] [2020-04-18 19:31:39,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:31:39,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:31:39,246 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:31:39,250 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:39,281 INFO L259 McrAutomatonBuilder]: Finished intersection with 184 states and 376 transitions. [2020-04-18 19:31:39,281 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:31:39,329 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:31:39,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:31:39,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:31:39,330 INFO L87 Difference]: Start difference. First operand 1111 states. Second operand 7 states. [2020-04-18 19:31:39,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:39,463 INFO L93 Difference]: Finished difference Result 1261 states and 3787 transitions. [2020-04-18 19:31:39,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 3787 transitions. [2020-04-18 19:31:39,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:31:39,467 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:31:39,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:39,468 INFO L82 PathProgramCache]: Analyzing trace with hash 108071788, now seen corresponding path program 3 times [2020-04-18 19:31:39,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:31:39,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284780051] [2020-04-18 19:31:39,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:31:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:31:39,601 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 19:31:39,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284780051] [2020-04-18 19:31:39,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:31:39,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:31:39,602 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:31:39,606 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:39,631 INFO L259 McrAutomatonBuilder]: Finished intersection with 183 states and 376 transitions. [2020-04-18 19:31:39,632 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:31:39,778 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 19:31:39,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:31:39,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:31:39,778 INFO L87 Difference]: Start difference. First operand 1261 states and 3787 transitions. Second operand 10 states. [2020-04-18 19:31:40,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:40,035 INFO L93 Difference]: Finished difference Result 1261 states and 3787 transitions. [2020-04-18 19:31:40,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 3787 transitions. [2020-04-18 19:31:40,038 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:31:40,038 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [864622783] [2020-04-18 19:31:40,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:31:40,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:31:40,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [864622783] [2020-04-18 19:31:40,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 19:31:40,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:31:40,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 19:31:40,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2020-04-18 19:31:40,040 INFO L87 Difference]: Start difference. First operand 1765 states and 5312 transitions. Second operand 15 states. [2020-04-18 19:31:40,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:40,533 INFO L93 Difference]: Finished difference Result 1513 states and 4418 transitions. [2020-04-18 19:31:40,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-04-18 19:31:40,538 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-04-18 19:31:40,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:31:40,541 INFO L225 Difference]: With dead ends: 1513 [2020-04-18 19:31:40,541 INFO L226 Difference]: Without dead ends: 773 [2020-04-18 19:31:40,542 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=328, Invalid=1394, Unknown=0, NotChecked=0, Total=1722 [2020-04-18 19:31:40,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-04-18 19:31:40,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 741. [2020-04-18 19:31:40,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2020-04-18 19:31:40,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 2085 transitions. [2020-04-18 19:31:40,558 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 2085 transitions. Word has length 46 [2020-04-18 19:31:40,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:31:40,559 INFO L479 AbstractCegarLoop]: Abstraction has 741 states and 2085 transitions. [2020-04-18 19:31:40,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 19:31:40,559 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 2085 transitions. [2020-04-18 19:31:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:31:40,561 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:31:40,561 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:31:40,561 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:31:40,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:40,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1230476627, now seen corresponding path program 1 times [2020-04-18 19:31:40,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:31:40,562 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1765232711] [2020-04-18 19:31:40,564 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:40,620 INFO L259 McrAutomatonBuilder]: Finished intersection with 1761 states and 5712 transitions. [2020-04-18 19:31:40,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states. [2020-04-18 19:31:40,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:31:40,641 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:31:40,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:40,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1847233613, now seen corresponding path program 2 times [2020-04-18 19:31:40,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:31:40,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841476852] [2020-04-18 19:31:40,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:31:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:31:40,756 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 19:31:40,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841476852] [2020-04-18 19:31:40,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:31:40,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:31:40,757 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:31:40,761 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:40,789 INFO L259 McrAutomatonBuilder]: Finished intersection with 196 states and 398 transitions. [2020-04-18 19:31:40,790 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:31:40,827 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:31:40,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:31:40,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:31:40,829 INFO L87 Difference]: Start difference. First operand 1761 states. Second operand 7 states. [2020-04-18 19:31:41,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:41,052 INFO L93 Difference]: Finished difference Result 2721 states and 8590 transitions. [2020-04-18 19:31:41,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 8590 transitions. [2020-04-18 19:31:41,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:31:41,059 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:31:41,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:41,059 INFO L82 PathProgramCache]: Analyzing trace with hash 336604545, now seen corresponding path program 3 times [2020-04-18 19:31:41,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:31:41,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775542354] [2020-04-18 19:31:41,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:31:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:31:41,154 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 19:31:41,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775542354] [2020-04-18 19:31:41,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:31:41,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:31:41,155 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:31:41,159 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:41,182 INFO L259 McrAutomatonBuilder]: Finished intersection with 195 states and 398 transitions. [2020-04-18 19:31:41,182 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:31:41,318 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 19:31:41,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:31:41,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:31:41,319 INFO L87 Difference]: Start difference. First operand 2721 states and 8590 transitions. Second operand 10 states. [2020-04-18 19:31:41,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:41,756 INFO L93 Difference]: Finished difference Result 2741 states and 8608 transitions. [2020-04-18 19:31:41,756 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 8608 transitions. [2020-04-18 19:31:41,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:31:41,761 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:31:41,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:41,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1210217369, now seen corresponding path program 4 times [2020-04-18 19:31:41,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:31:41,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152478289] [2020-04-18 19:31:41,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:31:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:31:41,859 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 19:31:41,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152478289] [2020-04-18 19:31:41,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:31:41,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:31:41,861 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:31:41,867 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:41,927 INFO L259 McrAutomatonBuilder]: Finished intersection with 327 states and 760 transitions. [2020-04-18 19:31:41,928 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:31:41,953 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:31:41,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:31:41,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:31:41,954 INFO L87 Difference]: Start difference. First operand 2741 states and 8608 transitions. Second operand 7 states. [2020-04-18 19:31:42,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:42,102 INFO L93 Difference]: Finished difference Result 3741 states and 11484 transitions. [2020-04-18 19:31:42,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 11484 transitions. [2020-04-18 19:31:42,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:31:42,110 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:31:42,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:42,110 INFO L82 PathProgramCache]: Analyzing trace with hash -21867287, now seen corresponding path program 5 times [2020-04-18 19:31:42,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:31:42,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742462570] [2020-04-18 19:31:42,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:31:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:31:42,223 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 19:31:42,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742462570] [2020-04-18 19:31:42,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:31:42,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:31:42,225 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:31:42,229 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:42,275 INFO L259 McrAutomatonBuilder]: Finished intersection with 333 states and 768 transitions. [2020-04-18 19:31:42,275 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:31:42,390 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 30 times. [2020-04-18 19:31:42,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:31:42,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1395, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 19:31:42,392 INFO L87 Difference]: Start difference. First operand 3741 states and 11484 transitions. Second operand 9 states. [2020-04-18 19:31:42,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:42,537 INFO L93 Difference]: Finished difference Result 5433 states and 16006 transitions. [2020-04-18 19:31:42,538 INFO L276 IsEmpty]: Start isEmpty. Operand 5433 states and 16006 transitions. [2020-04-18 19:31:42,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:31:42,545 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:31:42,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:31:42,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1242473183, now seen corresponding path program 6 times [2020-04-18 19:31:42,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:31:42,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136155819] [2020-04-18 19:31:42,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:31:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:31:42,641 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 19:31:42,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136155819] [2020-04-18 19:31:42,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:31:42,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:31:42,642 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:31:42,646 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:31:42,734 INFO L259 McrAutomatonBuilder]: Finished intersection with 511 states and 1290 transitions. [2020-04-18 19:31:42,734 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:31:43,053 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 60 times. [2020-04-18 19:31:43,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:31:43,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=2274, Unknown=0, NotChecked=0, Total=2652 [2020-04-18 19:31:43,055 INFO L87 Difference]: Start difference. First operand 5433 states and 16006 transitions. Second operand 14 states. [2020-04-18 19:31:44,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:44,262 INFO L93 Difference]: Finished difference Result 7727 states and 22015 transitions. [2020-04-18 19:31:44,263 INFO L276 IsEmpty]: Start isEmpty. Operand 7727 states and 22015 transitions. [2020-04-18 19:31:44,273 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:31:44,274 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1765232711] [2020-04-18 19:31:44,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:31:44,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:31:44,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1765232711] [2020-04-18 19:31:44,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-04-18 19:31:44,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:31:44,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-04-18 19:31:44,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=721, Invalid=3835, Unknown=0, NotChecked=0, Total=4556 [2020-04-18 19:31:44,276 INFO L87 Difference]: Start difference. First operand 741 states and 2085 transitions. Second operand 27 states. [2020-04-18 19:31:45,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:31:45,213 INFO L93 Difference]: Finished difference Result 1090 states and 3100 transitions. [2020-04-18 19:31:45,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-18 19:31:45,213 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 48 [2020-04-18 19:31:45,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:31:45,213 INFO L225 Difference]: With dead ends: 1090 [2020-04-18 19:31:45,213 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:31:45,216 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1393, Invalid=6979, Unknown=0, NotChecked=0, Total=8372 [2020-04-18 19:31:45,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:31:45,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:31:45,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:31:45,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:31:45,216 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-04-18 19:31:45,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:31:45,216 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:31:45,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-04-18 19:31:45,216 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:31:45,216 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:31:45,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:31:45 BasicIcfg [2020-04-18 19:31:45,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:31:45,223 INFO L168 Benchmark]: Toolchain (without parser) took 14059.73 ms. Allocated memory was 137.9 MB in the beginning and 650.1 MB in the end (delta: 512.2 MB). Free memory was 100.7 MB in the beginning and 317.7 MB in the end (delta: -217.0 MB). Peak memory consumption was 295.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:31:45,223 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-18 19:31:45,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 672.62 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 98.8 MB in the beginning and 157.9 MB in the end (delta: -59.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:31:45,225 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.82 ms. Allocated memory is still 201.3 MB. Free memory was 157.9 MB in the beginning and 155.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:31:45,225 INFO L168 Benchmark]: Boogie Preprocessor took 25.21 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 154.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:31:45,226 INFO L168 Benchmark]: RCFGBuilder took 406.74 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 132.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:31:45,226 INFO L168 Benchmark]: TraceAbstraction took 12879.68 ms. Allocated memory was 201.3 MB in the beginning and 650.1 MB in the end (delta: 448.8 MB). Free memory was 131.8 MB in the beginning and 317.7 MB in the end (delta: -185.9 MB). Peak memory consumption was 262.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:31:45,230 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 672.62 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 98.8 MB in the beginning and 157.9 MB in the end (delta: -59.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.82 ms. Allocated memory is still 201.3 MB. Free memory was 157.9 MB in the beginning and 155.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.21 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 154.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 406.74 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 132.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12879.68 ms. Allocated memory was 201.3 MB in the beginning and 650.1 MB in the end (delta: 448.8 MB). Free memory was 131.8 MB in the beginning and 317.7 MB in the end (delta: -185.9 MB). Peak memory consumption was 262.9 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 753 SDtfs, 2103 SDslu, 3605 SDs, 0 SdLazy, 680 SolverSat, 222 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1006 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3443 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred 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: 0.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 1928 StatesRemovedByMinimization, 4 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...