/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-17 01:15:27,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-17 01:15:27,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-17 01:15:27,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-17 01:15:27,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-17 01:15:27,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-17 01:15:27,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-17 01:15:27,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-17 01:15:27,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-17 01:15:27,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-17 01:15:27,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-17 01:15:27,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-17 01:15:27,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-17 01:15:27,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-17 01:15:27,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-17 01:15:27,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-17 01:15:27,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-17 01:15:27,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-17 01:15:27,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-17 01:15:27,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-17 01:15:27,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-17 01:15:27,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-17 01:15:27,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-17 01:15:27,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-17 01:15:27,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-17 01:15:27,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-17 01:15:27,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-17 01:15:27,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-17 01:15:27,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-17 01:15:27,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-17 01:15:27,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-17 01:15:27,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-17 01:15:27,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-17 01:15:27,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-17 01:15:27,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-17 01:15:27,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-17 01:15:27,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-17 01:15:27,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-17 01:15:27,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-17 01:15:27,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-17 01:15:27,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-17 01:15:27,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-17 01:15:27,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-17 01:15:27,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-17 01:15:27,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-17 01:15:27,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-17 01:15:27,897 INFO L138 SettingsManager]: * Use SBE=true [2020-09-17 01:15:27,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-17 01:15:27,898 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-17 01:15:27,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-17 01:15:27,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-17 01:15:27,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-17 01:15:27,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-17 01:15:27,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-17 01:15:27,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-17 01:15:27,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-17 01:15:27,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-17 01:15:27,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-17 01:15:27,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-17 01:15:27,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-17 01:15:27,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-17 01:15:27,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-17 01:15:27,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-17 01:15:27,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-17 01:15:27,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-17 01:15:27,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-17 01:15:27,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-17 01:15:27,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-17 01:15:27,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-17 01:15:27,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-17 01:15:27,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-17 01:15:27,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-17 01:15:28,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-17 01:15:28,381 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-17 01:15:28,385 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-17 01:15:28,387 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-17 01:15:28,388 INFO L275 PluginConnector]: CDTParser initialized [2020-09-17 01:15:28,389 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-09-17 01:15:28,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e365153/6e1797b268af46a690b72d879f535307/FLAG5dadce110 [2020-09-17 01:15:29,099 INFO L306 CDTParser]: Found 1 translation units. [2020-09-17 01:15:29,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-09-17 01:15:29,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e365153/6e1797b268af46a690b72d879f535307/FLAG5dadce110 [2020-09-17 01:15:29,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e365153/6e1797b268af46a690b72d879f535307 [2020-09-17 01:15:29,375 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-17 01:15:29,380 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-17 01:15:29,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-17 01:15:29,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-17 01:15:29,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-17 01:15:29,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 01:15:29" (1/1) ... [2020-09-17 01:15:29,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689fd9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:15:29, skipping insertion in model container [2020-09-17 01:15:29,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 01:15:29" (1/1) ... [2020-09-17 01:15:29,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-17 01:15:29,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-17 01:15:29,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 01:15:29,994 INFO L203 MainTranslator]: Completed pre-run [2020-09-17 01:15:30,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-17 01:15:30,147 INFO L208 MainTranslator]: Completed translation [2020-09-17 01:15:30,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:15:30 WrapperNode [2020-09-17 01:15:30,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-17 01:15:30,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-17 01:15:30,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-17 01:15:30,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-17 01:15:30,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:15:30" (1/1) ... [2020-09-17 01:15:30,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:15:30" (1/1) ... [2020-09-17 01:15:30,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-17 01:15:30,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-17 01:15:30,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-17 01:15:30,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-17 01:15:30,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:15:30" (1/1) ... [2020-09-17 01:15:30,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:15:30" (1/1) ... [2020-09-17 01:15:30,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:15:30" (1/1) ... [2020-09-17 01:15:30,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:15:30" (1/1) ... [2020-09-17 01:15:30,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:15:30" (1/1) ... [2020-09-17 01:15:30,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:15:30" (1/1) ... [2020-09-17 01:15:30,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:15:30" (1/1) ... [2020-09-17 01:15:30,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-17 01:15:30,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-17 01:15:30,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-17 01:15:30,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-17 01:15:30,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:15:30" (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 [2020-09-17 01:15:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-17 01:15:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-17 01:15:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-17 01:15:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-17 01:15:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-17 01:15:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-17 01:15:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-17 01:15:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-17 01:15:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-17 01:15:30,333 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-17 01:15:30,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-17 01:15:30,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-17 01:15:30,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-17 01:15:30,336 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-17 01:15:30,770 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-17 01:15:30,770 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-17 01:15:30,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 01:15:30 BoogieIcfgContainer [2020-09-17 01:15:30,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-17 01:15:30,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-17 01:15:30,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-17 01:15:30,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-17 01:15:30,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 01:15:29" (1/3) ... [2020-09-17 01:15:30,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa51665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 01:15:30, skipping insertion in model container [2020-09-17 01:15:30,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 01:15:30" (2/3) ... [2020-09-17 01:15:30,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa51665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 01:15:30, skipping insertion in model container [2020-09-17 01:15:30,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 01:15:30" (3/3) ... [2020-09-17 01:15:30,788 INFO L109 eAbstractionObserver]: Analyzing ICFG safe032_tso.oepc.i [2020-09-17 01:15:30,802 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-17 01:15:30,803 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-17 01:15:30,814 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-17 01:15:30,815 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-17 01:15:30,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,847 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,847 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,847 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,848 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,849 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,849 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,849 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,849 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,850 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,850 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,851 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,851 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,851 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,851 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,852 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,857 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,857 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,857 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,858 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,866 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,866 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,867 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,875 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,875 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,876 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,876 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-17 01:15:30,909 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-17 01:15:30,933 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-17 01:15:30,934 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-17 01:15:30,934 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-17 01:15:30,934 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-17 01:15:30,934 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-17 01:15:30,935 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-17 01:15:30,935 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-17 01:15:30,935 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-17 01:15:30,954 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-17 01:15:30,957 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-17 01:15:31,008 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-17 01:15:31,009 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 01:15:31,015 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-17 01:15:31,018 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-17 01:15:31,040 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-17 01:15:31,040 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-17 01:15:31,041 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-17 01:15:31,043 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-17 01:15:31,045 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-17 01:15:32,488 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2365 [2020-09-17 01:15:32,489 INFO L214 etLargeBlockEncoding]: Total number of compositions: 53 [2020-09-17 01:15:32,494 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-17 01:15:32,525 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-17 01:15:32,528 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-17 01:15:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-17 01:15:32,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:15:32,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:15:32,539 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:15:32,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:15:32,547 INFO L82 PathProgramCache]: Analyzing trace with hash -589225259, now seen corresponding path program 1 times [2020-09-17 01:15:32,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:15:32,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114831778] [2020-09-17 01:15:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:15:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:15:32,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:15:32,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114831778] [2020-09-17 01:15:32,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:15:32,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 01:15:32,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456406099] [2020-09-17 01:15:32,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-17 01:15:32,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:15:32,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-17 01:15:32,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-17 01:15:32,840 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-17 01:15:32,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:15:32,879 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-17 01:15:32,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-17 01:15:32,884 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-17 01:15:32,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:15:32,905 INFO L225 Difference]: With dead ends: 362 [2020-09-17 01:15:32,905 INFO L226 Difference]: Without dead ends: 298 [2020-09-17 01:15:32,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-17 01:15:32,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-17 01:15:32,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-17 01:15:32,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-17 01:15:32,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-17 01:15:32,992 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-17 01:15:32,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:15:32,994 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-17 01:15:32,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-17 01:15:32,994 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-17 01:15:32,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-17 01:15:32,995 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:15:32,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:15:32,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-17 01:15:32,996 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:15:32,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:15:32,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1086118353, now seen corresponding path program 1 times [2020-09-17 01:15:32,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:15:32,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675276684] [2020-09-17 01:15:32,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:15:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:15:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:15:33,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675276684] [2020-09-17 01:15:33,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:15:33,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-17 01:15:33,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046390930] [2020-09-17 01:15:33,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-17 01:15:33,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:15:33,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-17 01:15:33,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:15:33,104 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-09-17 01:15:33,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:15:33,127 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-09-17 01:15:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-17 01:15:33,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-17 01:15:33,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:15:33,130 INFO L225 Difference]: With dead ends: 217 [2020-09-17 01:15:33,130 INFO L226 Difference]: Without dead ends: 217 [2020-09-17 01:15:33,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-17 01:15:33,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-09-17 01:15:33,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-09-17 01:15:33,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-09-17 01:15:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-09-17 01:15:33,163 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-09-17 01:15:33,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:15:33,163 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-09-17 01:15:33,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-17 01:15:33,164 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-09-17 01:15:33,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-17 01:15:33,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:15:33,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:15:33,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-17 01:15:33,167 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:15:33,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:15:33,167 INFO L82 PathProgramCache]: Analyzing trace with hash -954674037, now seen corresponding path program 1 times [2020-09-17 01:15:33,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:15:33,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027491909] [2020-09-17 01:15:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:15:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:15:33,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:15:33,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027491909] [2020-09-17 01:15:33,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:15:33,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:15:33,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100620893] [2020-09-17 01:15:33,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 01:15:33,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:15:33,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 01:15:33,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 01:15:33,312 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-09-17 01:15:33,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:15:33,337 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-09-17 01:15:33,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 01:15:33,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-17 01:15:33,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:15:33,339 INFO L225 Difference]: With dead ends: 136 [2020-09-17 01:15:33,339 INFO L226 Difference]: Without dead ends: 136 [2020-09-17 01:15:33,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-17 01:15:33,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-17 01:15:33,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-09-17 01:15:33,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-17 01:15:33,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-09-17 01:15:33,345 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-09-17 01:15:33,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:15:33,346 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-09-17 01:15:33,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 01:15:33,346 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-09-17 01:15:33,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-17 01:15:33,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:15:33,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:15:33,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-17 01:15:33,348 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:15:33,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:15:33,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1044268816, now seen corresponding path program 1 times [2020-09-17 01:15:33,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:15:33,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490814076] [2020-09-17 01:15:33,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:15:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:15:33,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:15:33,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490814076] [2020-09-17 01:15:33,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:15:33,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 01:15:33,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419829654] [2020-09-17 01:15:33,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:15:33,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:15:33,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:15:33,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:15:33,424 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-09-17 01:15:33,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:15:33,450 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-09-17 01:15:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 01:15:33,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-17 01:15:33,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:15:33,452 INFO L225 Difference]: With dead ends: 109 [2020-09-17 01:15:33,452 INFO L226 Difference]: Without dead ends: 109 [2020-09-17 01:15:33,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:15:33,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-17 01:15:33,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-09-17 01:15:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-17 01:15:33,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-09-17 01:15:33,457 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-09-17 01:15:33,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:15:33,458 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-09-17 01:15:33,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:15:33,458 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-09-17 01:15:33,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-17 01:15:33,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:15:33,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:15:33,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-17 01:15:33,460 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:15:33,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:15:33,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1052552835, now seen corresponding path program 1 times [2020-09-17 01:15:33,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:15:33,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153845448] [2020-09-17 01:15:33,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:15:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:15:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:15:33,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153845448] [2020-09-17 01:15:33,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:15:33,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 01:15:33,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706752723] [2020-09-17 01:15:33,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:15:33,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:15:33,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:15:33,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:15:33,594 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-09-17 01:15:33,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:15:33,750 INFO L93 Difference]: Finished difference Result 174 states and 369 transitions. [2020-09-17 01:15:33,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-17 01:15:33,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-17 01:15:33,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:15:33,757 INFO L225 Difference]: With dead ends: 174 [2020-09-17 01:15:33,758 INFO L226 Difference]: Without dead ends: 136 [2020-09-17 01:15:33,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-17 01:15:33,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-17 01:15:33,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 109. [2020-09-17 01:15:33,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-17 01:15:33,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 239 transitions. [2020-09-17 01:15:33,764 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 239 transitions. Word has length 18 [2020-09-17 01:15:33,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:15:33,765 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 239 transitions. [2020-09-17 01:15:33,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:15:33,765 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 239 transitions. [2020-09-17 01:15:33,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-17 01:15:33,766 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:15:33,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:15:33,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-17 01:15:33,767 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:15:33,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:15:33,767 INFO L82 PathProgramCache]: Analyzing trace with hash 645557555, now seen corresponding path program 2 times [2020-09-17 01:15:33,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:15:33,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142346429] [2020-09-17 01:15:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:15:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:15:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:15:33,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142346429] [2020-09-17 01:15:33,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:15:33,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 01:15:33,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079814454] [2020-09-17 01:15:33,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:15:33,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:15:33,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:15:33,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:15:33,850 INFO L87 Difference]: Start difference. First operand 109 states and 239 transitions. Second operand 5 states. [2020-09-17 01:15:33,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:15:33,919 INFO L93 Difference]: Finished difference Result 176 states and 358 transitions. [2020-09-17 01:15:33,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-17 01:15:33,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-17 01:15:33,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:15:33,921 INFO L225 Difference]: With dead ends: 176 [2020-09-17 01:15:33,921 INFO L226 Difference]: Without dead ends: 124 [2020-09-17 01:15:33,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-17 01:15:33,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-17 01:15:33,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 109. [2020-09-17 01:15:33,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-17 01:15:33,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 232 transitions. [2020-09-17 01:15:33,926 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 232 transitions. Word has length 18 [2020-09-17 01:15:33,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:15:33,926 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 232 transitions. [2020-09-17 01:15:33,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:15:33,926 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 232 transitions. [2020-09-17 01:15:33,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-17 01:15:33,927 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:15:33,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:15:33,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-17 01:15:33,927 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:15:33,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:15:33,928 INFO L82 PathProgramCache]: Analyzing trace with hash -457536705, now seen corresponding path program 3 times [2020-09-17 01:15:33,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:15:33,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327821861] [2020-09-17 01:15:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:15:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:15:34,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:15:34,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327821861] [2020-09-17 01:15:34,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:15:34,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-17 01:15:34,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070560780] [2020-09-17 01:15:34,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-17 01:15:34,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:15:34,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-17 01:15:34,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:15:34,010 INFO L87 Difference]: Start difference. First operand 109 states and 232 transitions. Second operand 5 states. [2020-09-17 01:15:34,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:15:34,111 INFO L93 Difference]: Finished difference Result 175 states and 348 transitions. [2020-09-17 01:15:34,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-17 01:15:34,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-17 01:15:34,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:15:34,113 INFO L225 Difference]: With dead ends: 175 [2020-09-17 01:15:34,113 INFO L226 Difference]: Without dead ends: 55 [2020-09-17 01:15:34,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-17 01:15:34,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-17 01:15:34,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-17 01:15:34,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-17 01:15:34,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-09-17 01:15:34,116 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-09-17 01:15:34,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:15:34,116 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-09-17 01:15:34,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-17 01:15:34,117 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-09-17 01:15:34,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-17 01:15:34,117 INFO L414 BasicCegarLoop]: Found error trace [2020-09-17 01:15:34,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-17 01:15:34,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-17 01:15:34,118 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-17 01:15:34,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-17 01:15:34,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1271535879, now seen corresponding path program 4 times [2020-09-17 01:15:34,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-17 01:15:34,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632857466] [2020-09-17 01:15:34,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-17 01:15:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-17 01:15:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-17 01:15:34,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632857466] [2020-09-17 01:15:34,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-17 01:15:34,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-17 01:15:34,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282719032] [2020-09-17 01:15:34,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-17 01:15:34,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-17 01:15:34,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-17 01:15:34,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-17 01:15:34,176 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 4 states. [2020-09-17 01:15:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-17 01:15:34,191 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-09-17 01:15:34,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-17 01:15:34,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-17 01:15:34,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-17 01:15:34,192 INFO L225 Difference]: With dead ends: 54 [2020-09-17 01:15:34,192 INFO L226 Difference]: Without dead ends: 0 [2020-09-17 01:15:34,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-17 01:15:34,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-17 01:15:34,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-17 01:15:34,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-17 01:15:34,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-17 01:15:34,193 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-17 01:15:34,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-17 01:15:34,194 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-17 01:15:34,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-17 01:15:34,194 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-17 01:15:34,194 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-17 01:15:34,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-17 01:15:34,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 01:15:34 BasicIcfg [2020-09-17 01:15:34,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-17 01:15:34,205 INFO L168 Benchmark]: Toolchain (without parser) took 4825.10 ms. Allocated memory was 137.9 MB in the beginning and 252.7 MB in the end (delta: 114.8 MB). Free memory was 99.2 MB in the beginning and 205.5 MB in the end (delta: -106.3 MB). Peak memory consumption was 8.5 MB. Max. memory is 7.1 GB. [2020-09-17 01:15:34,206 INFO L168 Benchmark]: CDTParser took 1.64 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-17 01:15:34,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.69 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 98.5 MB in the beginning and 159.4 MB in the end (delta: -60.9 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-09-17 01:15:34,209 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.36 ms. Allocated memory is still 201.9 MB. Free memory was 159.4 MB in the beginning and 157.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-17 01:15:34,211 INFO L168 Benchmark]: Boogie Preprocessor took 37.56 ms. Allocated memory is still 201.9 MB. Free memory was 157.3 MB in the beginning and 156.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-17 01:15:34,216 INFO L168 Benchmark]: RCFGBuilder took 529.69 ms. Allocated memory is still 201.9 MB. Free memory was 156.0 MB in the beginning and 134.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-17 01:15:34,218 INFO L168 Benchmark]: TraceAbstraction took 3422.31 ms. Allocated memory was 201.9 MB in the beginning and 252.7 MB in the end (delta: 50.9 MB). Free memory was 133.3 MB in the beginning and 205.5 MB in the end (delta: -72.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-17 01:15:34,225 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.64 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 767.69 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 98.5 MB in the beginning and 159.4 MB in the end (delta: -60.9 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.36 ms. Allocated memory is still 201.9 MB. Free memory was 159.4 MB in the beginning and 157.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.56 ms. Allocated memory is still 201.9 MB. Free memory was 157.3 MB in the beginning and 156.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 529.69 ms. Allocated memory is still 201.9 MB. Free memory was 156.0 MB in the beginning and 134.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3422.31 ms. Allocated memory was 201.9 MB in the beginning and 252.7 MB in the end (delta: 50.9 MB). Free memory was 133.3 MB in the beginning and 205.5 MB in the end (delta: -72.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 77 ProgramPointsBefore, 32 ProgramPointsAfterwards, 69 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 648 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2365 CheckedPairsTotal, 53 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 162 SDtfs, 105 SDslu, 267 SDs, 0 SdLazy, 91 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s 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, 8 MinimizatonAttempts, 42 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 3814 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...