/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 17:14:18,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 17:14:18,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 17:14:18,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 17:14:18,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 17:14:18,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 17:14:18,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 17:14:18,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 17:14:18,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 17:14:18,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 17:14:18,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 17:14:18,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 17:14:18,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 17:14:18,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 17:14:18,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 17:14:18,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 17:14:18,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 17:14:18,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 17:14:18,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 17:14:18,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 17:14:18,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 17:14:18,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 17:14:18,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 17:14:18,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 17:14:18,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 17:14:18,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 17:14:18,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 17:14:18,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 17:14:18,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 17:14:18,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 17:14:18,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 17:14:18,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 17:14:18,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 17:14:18,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 17:14:18,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 17:14:18,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 17:14:18,889 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-11-09 17:14:18,927 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 17:14:18,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 17:14:18,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 17:14:18,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 17:14:18,930 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 17:14:18,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 17:14:18,931 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 17:14:18,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 17:14:18,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 17:14:18,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 17:14:18,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 17:14:18,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 17:14:18,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 17:14:18,934 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 17:14:18,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 17:14:18,934 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 17:14:18,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 17:14:18,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 17:14:18,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 17:14:18,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 17:14:18,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 17:14:18,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:14:18,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 17:14:18,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 17:14:18,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 17:14:18,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 17:14:18,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 17:14:18,937 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 17:14:18,937 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 17:14:18,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 17:14:18,938 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 17:14:19,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 17:14:19,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 17:14:19,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 17:14:19,365 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 17:14:19,366 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 17:14:19,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2020-11-09 17:14:19,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20850528d/6b233752e4894e378f518f31ee5f7fd3/FLAG732473c9a [2020-11-09 17:14:20,185 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 17:14:20,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.opt.i [2020-11-09 17:14:20,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20850528d/6b233752e4894e378f518f31ee5f7fd3/FLAG732473c9a [2020-11-09 17:14:20,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20850528d/6b233752e4894e378f518f31ee5f7fd3 [2020-11-09 17:14:20,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 17:14:20,246 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 17:14:20,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 17:14:20,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 17:14:20,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 17:14:20,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:14:20" (1/1) ... [2020-11-09 17:14:20,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f35d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:20, skipping insertion in model container [2020-11-09 17:14:20,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:14:20" (1/1) ... [2020-11-09 17:14:20,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 17:14:20,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 17:14:20,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:14:20,785 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 17:14:20,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:14:20,981 INFO L208 MainTranslator]: Completed translation [2020-11-09 17:14:20,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:20 WrapperNode [2020-11-09 17:14:20,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 17:14:20,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 17:14:20,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 17:14:20,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 17:14:20,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:20" (1/1) ... [2020-11-09 17:14:21,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:20" (1/1) ... [2020-11-09 17:14:21,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 17:14:21,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 17:14:21,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 17:14:21,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 17:14:21,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:20" (1/1) ... [2020-11-09 17:14:21,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:20" (1/1) ... [2020-11-09 17:14:21,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:20" (1/1) ... [2020-11-09 17:14:21,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:20" (1/1) ... [2020-11-09 17:14:21,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:20" (1/1) ... [2020-11-09 17:14:21,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:20" (1/1) ... [2020-11-09 17:14:21,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:20" (1/1) ... [2020-11-09 17:14:21,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 17:14:21,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 17:14:21,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 17:14:21,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 17:14:21,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:20" (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 [2020-11-09 17:14:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 17:14:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 17:14:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 17:14:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 17:14:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 17:14:21,186 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 17:14:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 17:14:21,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 17:14:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 17:14:21,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 17:14:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 17:14:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 17:14:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 17:14:21,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 17:14:21,189 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 17:14:21,760 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 17:14:21,761 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 17:14:21,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:14:21 BoogieIcfgContainer [2020-11-09 17:14:21,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 17:14:21,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 17:14:21,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 17:14:21,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 17:14:21,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:14:20" (1/3) ... [2020-11-09 17:14:21,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46089781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:14:21, skipping insertion in model container [2020-11-09 17:14:21,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:20" (2/3) ... [2020-11-09 17:14:21,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46089781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:14:21, skipping insertion in model container [2020-11-09 17:14:21,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:14:21" (3/3) ... [2020-11-09 17:14:21,772 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_pso.opt.i [2020-11-09 17:14:21,787 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 17:14:21,788 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 17:14:21,792 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 17:14:21,792 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 17:14:21,826 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,826 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,826 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,827 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,827 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,827 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,827 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,827 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,828 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,828 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,828 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,828 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,829 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,829 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,829 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,829 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,829 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,830 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,830 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,830 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,830 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,831 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,831 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,831 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,831 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,831 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,832 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,832 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,832 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,832 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,832 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,833 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,833 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,833 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,833 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,834 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,836 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,837 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,842 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,842 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,842 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,843 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,848 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,848 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,848 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:21,851 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 17:14:21,863 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 17:14:21,886 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:14:21,886 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:14:21,886 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:14:21,886 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:14:21,886 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:14:21,887 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:14:21,887 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:14:21,887 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:14:21,899 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:14:21,900 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 17:14:21,903 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 17:14:21,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 17:14:21,948 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 17:14:21,948 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 17:14:21,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 17:14:21,955 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 17:14:25,731 WARN L194 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-09 17:14:25,936 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-09 17:14:26,359 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-09 17:14:27,333 WARN L194 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-09 17:14:27,487 WARN L194 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-09 17:14:27,824 WARN L194 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-09 17:14:27,976 WARN L194 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-09 17:14:28,178 WARN L194 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:14:28,339 WARN L194 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:14:28,501 WARN L194 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:14:28,663 WARN L194 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:14:28,668 INFO L131 LiptonReduction]: Checked pairs total: 2778 [2020-11-09 17:14:28,668 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-11-09 17:14:28,674 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-09 17:14:28,705 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-09 17:14:28,708 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-09 17:14:28,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:14:28,715 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:28,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:28,716 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:28,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:28,723 INFO L82 PathProgramCache]: Analyzing trace with hash -345538935, now seen corresponding path program 1 times [2020-11-09 17:14:28,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:28,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710202145] [2020-11-09 17:14:28,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:28,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710202145] [2020-11-09 17:14:28,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:28,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:14:28,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [961699588] [2020-11-09 17:14:28,941 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:28,944 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:28,963 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:14:28,963 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:28,967 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:14:28,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 17:14:28,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:28,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 17:14:28,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 17:14:28,987 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-09 17:14:29,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:29,012 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-09 17:14:29,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 17:14:29,014 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 17:14:29,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:29,035 INFO L225 Difference]: With dead ends: 362 [2020-11-09 17:14:29,036 INFO L226 Difference]: Without dead ends: 298 [2020-11-09 17:14:29,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 17:14:29,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-09 17:14:29,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-09 17:14:29,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-09 17:14:29,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-09 17:14:29,164 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-09 17:14:29,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:29,165 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-09 17:14:29,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 17:14:29,168 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-09 17:14:29,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 17:14:29,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:29,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:29,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 17:14:29,170 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:29,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:29,171 INFO L82 PathProgramCache]: Analyzing trace with hash -2121797576, now seen corresponding path program 1 times [2020-11-09 17:14:29,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:29,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641510590] [2020-11-09 17:14:29,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:29,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641510590] [2020-11-09 17:14:29,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:29,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:14:29,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [988531311] [2020-11-09 17:14:29,314 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:29,315 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:29,317 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-11-09 17:14:29,317 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:29,318 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:14:29,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:14:29,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:29,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:14:29,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:14:29,321 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-11-09 17:14:29,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:29,363 INFO L93 Difference]: Finished difference Result 298 states and 816 transitions. [2020-11-09 17:14:29,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:14:29,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 17:14:29,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:29,367 INFO L225 Difference]: With dead ends: 298 [2020-11-09 17:14:29,367 INFO L226 Difference]: Without dead ends: 234 [2020-11-09 17:14:29,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:14:29,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-09 17:14:29,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-11-09 17:14:29,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-09 17:14:29,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 640 transitions. [2020-11-09 17:14:29,380 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 640 transitions. Word has length 9 [2020-11-09 17:14:29,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:29,381 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 640 transitions. [2020-11-09 17:14:29,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:14:29,381 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 640 transitions. [2020-11-09 17:14:29,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 17:14:29,383 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:29,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:29,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 17:14:29,384 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:29,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:29,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1060758680, now seen corresponding path program 1 times [2020-11-09 17:14:29,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:29,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268592707] [2020-11-09 17:14:29,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:29,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268592707] [2020-11-09 17:14:29,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:29,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:14:29,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1393353067] [2020-11-09 17:14:29,488 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:29,489 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:29,491 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 15 transitions. [2020-11-09 17:14:29,491 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:29,508 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:14:29,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:14:29,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:29,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:14:29,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:14:29,510 INFO L87 Difference]: Start difference. First operand 234 states and 640 transitions. Second operand 4 states. [2020-11-09 17:14:29,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:29,607 INFO L93 Difference]: Finished difference Result 346 states and 916 transitions. [2020-11-09 17:14:29,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:14:29,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 17:14:29,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:29,614 INFO L225 Difference]: With dead ends: 346 [2020-11-09 17:14:29,615 INFO L226 Difference]: Without dead ends: 164 [2020-11-09 17:14:29,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:14:29,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-11-09 17:14:29,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-11-09 17:14:29,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-11-09 17:14:29,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 432 transitions. [2020-11-09 17:14:29,629 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 432 transitions. Word has length 11 [2020-11-09 17:14:29,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:29,629 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 432 transitions. [2020-11-09 17:14:29,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:14:29,630 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 432 transitions. [2020-11-09 17:14:29,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 17:14:29,632 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:29,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:29,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 17:14:29,634 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:29,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:29,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1476250237, now seen corresponding path program 1 times [2020-11-09 17:14:29,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:29,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317703803] [2020-11-09 17:14:29,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:29,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317703803] [2020-11-09 17:14:29,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:29,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:14:29,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1509130966] [2020-11-09 17:14:29,770 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:29,771 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:29,775 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-11-09 17:14:29,775 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:29,804 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:14:29,862 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:14:29,885 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:14:29,893 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3229#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 17:14:29,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:14:29,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:29,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:14:29,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:14:29,895 INFO L87 Difference]: Start difference. First operand 164 states and 432 transitions. Second operand 5 states. [2020-11-09 17:14:30,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:30,006 INFO L93 Difference]: Finished difference Result 139 states and 326 transitions. [2020-11-09 17:14:30,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:14:30,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 17:14:30,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:30,008 INFO L225 Difference]: With dead ends: 139 [2020-11-09 17:14:30,008 INFO L226 Difference]: Without dead ends: 87 [2020-11-09 17:14:30,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:14:30,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-09 17:14:30,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-11-09 17:14:30,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-09 17:14:30,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 172 transitions. [2020-11-09 17:14:30,013 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 172 transitions. Word has length 12 [2020-11-09 17:14:30,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:30,014 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 172 transitions. [2020-11-09 17:14:30,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:14:30,014 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 172 transitions. [2020-11-09 17:14:30,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 17:14:30,015 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:30,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:30,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 17:14:30,016 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:30,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:30,017 INFO L82 PathProgramCache]: Analyzing trace with hash 809328863, now seen corresponding path program 1 times [2020-11-09 17:14:30,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:30,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842825104] [2020-11-09 17:14:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:30,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:30,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842825104] [2020-11-09 17:14:30,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:30,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 17:14:30,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1732413104] [2020-11-09 17:14:30,155 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:30,157 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:30,161 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-11-09 17:14:30,162 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:30,190 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3553#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 17:14:30,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 17:14:30,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:30,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 17:14:30,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:14:30,192 INFO L87 Difference]: Start difference. First operand 87 states and 172 transitions. Second operand 7 states. [2020-11-09 17:14:30,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:30,305 INFO L93 Difference]: Finished difference Result 76 states and 148 transitions. [2020-11-09 17:14:30,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:14:30,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-09 17:14:30,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:30,307 INFO L225 Difference]: With dead ends: 76 [2020-11-09 17:14:30,307 INFO L226 Difference]: Without dead ends: 67 [2020-11-09 17:14:30,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-09 17:14:30,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-09 17:14:30,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-11-09 17:14:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-09 17:14:30,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 132 transitions. [2020-11-09 17:14:30,311 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 132 transitions. Word has length 15 [2020-11-09 17:14:30,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:30,311 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 132 transitions. [2020-11-09 17:14:30,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 17:14:30,312 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 132 transitions. [2020-11-09 17:14:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 17:14:30,312 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:30,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:30,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 17:14:30,313 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:30,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:30,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1097223765, now seen corresponding path program 1 times [2020-11-09 17:14:30,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:30,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953707092] [2020-11-09 17:14:30,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:30,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953707092] [2020-11-09 17:14:30,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:30,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-09 17:14:30,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1229076587] [2020-11-09 17:14:30,530 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:30,533 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:30,541 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 68 transitions. [2020-11-09 17:14:30,542 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:30,756 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3776#(and (= ~__unbuffered_p0_EAX~0 1) (<= 1 ~__unbuffered_cnt~0) (<= ~__unbuffered_cnt~0 1)), 3777#(and (= ~__unbuffered_p0_EAX~0 1) (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0))] [2020-11-09 17:14:30,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-09 17:14:30,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:30,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-09 17:14:30,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-11-09 17:14:30,758 INFO L87 Difference]: Start difference. First operand 67 states and 132 transitions. Second operand 12 states. [2020-11-09 17:14:31,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:31,184 INFO L93 Difference]: Finished difference Result 104 states and 194 transitions. [2020-11-09 17:14:31,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 17:14:31,185 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-09 17:14:31,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:31,186 INFO L225 Difference]: With dead ends: 104 [2020-11-09 17:14:31,186 INFO L226 Difference]: Without dead ends: 57 [2020-11-09 17:14:31,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-11-09 17:14:31,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-09 17:14:31,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2020-11-09 17:14:31,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-09 17:14:31,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 78 transitions. [2020-11-09 17:14:31,189 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 78 transitions. Word has length 18 [2020-11-09 17:14:31,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:31,189 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 78 transitions. [2020-11-09 17:14:31,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-09 17:14:31,189 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 78 transitions. [2020-11-09 17:14:31,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 17:14:31,190 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:31,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:31,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 17:14:31,191 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:31,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:31,191 INFO L82 PathProgramCache]: Analyzing trace with hash -30995043, now seen corresponding path program 2 times [2020-11-09 17:14:31,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:31,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775456705] [2020-11-09 17:14:31,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:31,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775456705] [2020-11-09 17:14:31,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:31,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-09 17:14:31,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [796775688] [2020-11-09 17:14:31,395 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:31,418 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:31,427 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 58 transitions. [2020-11-09 17:14:31,428 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:31,501 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3992#(and (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0) (= ~__unbuffered_p1_EAX~0 1))] [2020-11-09 17:14:31,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 17:14:31,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:31,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 17:14:31,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-11-09 17:14:31,503 INFO L87 Difference]: Start difference. First operand 46 states and 78 transitions. Second operand 11 states. [2020-11-09 17:14:31,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:31,700 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2020-11-09 17:14:31,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-09 17:14:31,701 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-11-09 17:14:31,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:31,701 INFO L225 Difference]: With dead ends: 54 [2020-11-09 17:14:31,702 INFO L226 Difference]: Without dead ends: 44 [2020-11-09 17:14:31,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-11-09 17:14:31,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-09 17:14:31,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-11-09 17:14:31,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-09 17:14:31,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 74 transitions. [2020-11-09 17:14:31,707 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 74 transitions. Word has length 18 [2020-11-09 17:14:31,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:31,709 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 74 transitions. [2020-11-09 17:14:31,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 17:14:31,710 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 74 transitions. [2020-11-09 17:14:31,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 17:14:31,710 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:31,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:31,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 17:14:31,711 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:31,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:31,711 INFO L82 PathProgramCache]: Analyzing trace with hash -196901277, now seen corresponding path program 3 times [2020-11-09 17:14:31,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:31,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444412554] [2020-11-09 17:14:31,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:31,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444412554] [2020-11-09 17:14:31,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:31,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-09 17:14:31,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1071817739] [2020-11-09 17:14:31,934 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:31,936 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:31,945 INFO L252 McrAutomatonBuilder]: Finished intersection with 49 states and 81 transitions. [2020-11-09 17:14:31,945 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:32,076 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4149#(and (= ~__unbuffered_p0_EAX~0 1) (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0)), 4150#(and (= ~x~0 1) (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0))] [2020-11-09 17:14:32,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-09 17:14:32,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:32,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-09 17:14:32,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-09 17:14:32,077 INFO L87 Difference]: Start difference. First operand 44 states and 74 transitions. Second operand 12 states. [2020-11-09 17:14:32,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:32,310 INFO L93 Difference]: Finished difference Result 52 states and 83 transitions. [2020-11-09 17:14:32,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-09 17:14:32,311 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-09 17:14:32,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:32,312 INFO L225 Difference]: With dead ends: 52 [2020-11-09 17:14:32,312 INFO L226 Difference]: Without dead ends: 44 [2020-11-09 17:14:32,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-11-09 17:14:32,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-09 17:14:32,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-11-09 17:14:32,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-09 17:14:32,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 72 transitions. [2020-11-09 17:14:32,315 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 72 transitions. Word has length 18 [2020-11-09 17:14:32,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:32,316 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 72 transitions. [2020-11-09 17:14:32,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-09 17:14:32,316 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 72 transitions. [2020-11-09 17:14:32,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 17:14:32,316 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:32,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:32,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 17:14:32,317 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:32,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:32,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1712999733, now seen corresponding path program 4 times [2020-11-09 17:14:32,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:32,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066635483] [2020-11-09 17:14:32,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:32,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066635483] [2020-11-09 17:14:32,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:32,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-09 17:14:32,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [332828542] [2020-11-09 17:14:32,550 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:32,552 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:32,560 INFO L252 McrAutomatonBuilder]: Finished intersection with 49 states and 81 transitions. [2020-11-09 17:14:32,560 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:32,715 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [4305#(and (= ~__unbuffered_p0_EAX~0 1) (<= 1 ~__unbuffered_cnt~0) (<= ~__unbuffered_cnt~0 1)), 4306#(and (= ~__unbuffered_p0_EAX~0 1) (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0)), 4307#(and (= ~x~0 1) (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0))] [2020-11-09 17:14:32,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 17:14:32,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:32,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 17:14:32,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-11-09 17:14:32,717 INFO L87 Difference]: Start difference. First operand 44 states and 72 transitions. Second operand 13 states. [2020-11-09 17:14:32,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:32,996 INFO L93 Difference]: Finished difference Result 50 states and 77 transitions. [2020-11-09 17:14:32,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-09 17:14:32,997 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-11-09 17:14:32,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:32,997 INFO L225 Difference]: With dead ends: 50 [2020-11-09 17:14:32,997 INFO L226 Difference]: Without dead ends: 42 [2020-11-09 17:14:32,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-11-09 17:14:32,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-09 17:14:32,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-11-09 17:14:32,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-09 17:14:33,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-11-09 17:14:33,000 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 18 [2020-11-09 17:14:33,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:33,000 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-11-09 17:14:33,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 17:14:33,001 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-11-09 17:14:33,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 17:14:33,001 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:33,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:33,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 17:14:33,002 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:33,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:33,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1731427213, now seen corresponding path program 5 times [2020-11-09 17:14:33,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:33,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890968064] [2020-11-09 17:14:33,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:33,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:33,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890968064] [2020-11-09 17:14:33,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:33,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 17:14:33,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1055504810] [2020-11-09 17:14:33,096 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:33,098 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:33,103 INFO L252 McrAutomatonBuilder]: Finished intersection with 41 states and 58 transitions. [2020-11-09 17:14:33,103 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:33,125 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:14:33,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:14:33,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:33,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:14:33,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:14:33,126 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-11-09 17:14:33,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:33,170 INFO L93 Difference]: Finished difference Result 39 states and 65 transitions. [2020-11-09 17:14:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:14:33,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 17:14:33,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:33,171 INFO L225 Difference]: With dead ends: 39 [2020-11-09 17:14:33,171 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 17:14:33,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:14:33,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 17:14:33,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 17:14:33,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 17:14:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 17:14:33,173 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-09 17:14:33,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:33,173 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 17:14:33,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:14:33,173 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 17:14:33,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 17:14:33,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-09 17:14:33,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:14:33 BasicIcfg [2020-11-09 17:14:33,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 17:14:33,178 INFO L168 Benchmark]: Toolchain (without parser) took 12936.96 ms. Allocated memory was 163.6 MB in the beginning and 254.8 MB in the end (delta: 91.2 MB). Free memory was 137.5 MB in the beginning and 215.9 MB in the end (delta: -78.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:14:33,178 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory is still 135.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:14:33,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.86 ms. Allocated memory is still 163.6 MB. Free memory was 136.8 MB in the beginning and 140.5 MB in the end (delta: -3.7 MB). Peak memory consumption was 30.6 MB. Max. memory is 8.0 GB. [2020-11-09 17:14:33,180 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.89 ms. Allocated memory is still 163.6 MB. Free memory was 140.5 MB in the beginning and 138.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:14:33,181 INFO L168 Benchmark]: Boogie Preprocessor took 26.44 ms. Allocated memory is still 163.6 MB. Free memory was 138.4 MB in the beginning and 137.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:14:33,181 INFO L168 Benchmark]: RCFGBuilder took 667.49 ms. Allocated memory is still 163.6 MB. Free memory was 137.4 MB in the beginning and 115.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:14:33,182 INFO L168 Benchmark]: TraceAbstraction took 11412.00 ms. Allocated memory was 163.6 MB in the beginning and 254.8 MB in the end (delta: 91.2 MB). Free memory was 114.8 MB in the beginning and 215.9 MB in the end (delta: -101.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:14:33,186 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory is still 135.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 736.86 ms. Allocated memory is still 163.6 MB. Free memory was 136.8 MB in the beginning and 140.5 MB in the end (delta: -3.7 MB). Peak memory consumption was 30.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 80.89 ms. Allocated memory is still 163.6 MB. Free memory was 140.5 MB in the beginning and 138.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.44 ms. Allocated memory is still 163.6 MB. Free memory was 138.4 MB in the beginning and 137.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 667.49 ms. Allocated memory is still 163.6 MB. Free memory was 137.4 MB in the beginning and 115.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11412.00 ms. Allocated memory was 163.6 MB in the beginning and 254.8 MB in the end (delta: 91.2 MB). Free memory was 114.8 MB in the beginning and 215.9 MB in the end (delta: -101.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 777 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 52 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 6.7s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2778 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.8s, HoareTripleCheckerStatistics: 225 SDtfs, 174 SDslu, 851 SDs, 0 SdLazy, 729 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 48 SyntacticMatches, 9 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 9355 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...