/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 10:04:08,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 10:04:08,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 10:04:08,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 10:04:08,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 10:04:08,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 10:04:08,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 10:04:08,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 10:04:08,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 10:04:08,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 10:04:08,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 10:04:08,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 10:04:08,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 10:04:08,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 10:04:08,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 10:04:08,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 10:04:08,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 10:04:08,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 10:04:08,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 10:04:08,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 10:04:08,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 10:04:08,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 10:04:08,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 10:04:08,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 10:04:08,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-05 10:04:08,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-05 10:04:08,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-05 10:04:08,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-05 10:04:08,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-05 10:04:08,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-05 10:04:08,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 10:04:08,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 10:04:08,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 10:04:08,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 10:04:08,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 10:04:08,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 10:04:08,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 10:04:08,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 10:04:08,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 10:04:08,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 10:04:08,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 10:04:08,819 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-06-05 10:04:08,855 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 10:04:08,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 10:04:08,856 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 10:04:08,856 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 10:04:08,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 10:04:08,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 10:04:08,859 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 10:04:08,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 10:04:08,859 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 10:04:08,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 10:04:08,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 10:04:08,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 10:04:08,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 10:04:08,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 10:04:08,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 10:04:08,861 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 10:04:08,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 10:04:08,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 10:04:08,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 10:04:08,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 10:04:08,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 10:04:08,861 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 10:04:08,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 10:04:08,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 10:04:08,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 10:04:08,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 10:04:08,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 10:04:08,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 10:04:08,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 10:04:08,862 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 10:04:08,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 10:04:08,863 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 10:04:08,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 10:04:09,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 10:04:09,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 10:04:09,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 10:04:09,165 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 10:04:09,165 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 10:04:09,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2021-06-05 10:04:09,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd92c2522/b1714916d6534d08a6298b17d2fa8848/FLAGd5fc38476 [2021-06-05 10:04:09,715 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 10:04:09,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2021-06-05 10:04:09,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd92c2522/b1714916d6534d08a6298b17d2fa8848/FLAGd5fc38476 [2021-06-05 10:04:10,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd92c2522/b1714916d6534d08a6298b17d2fa8848 [2021-06-05 10:04:10,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 10:04:10,040 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 10:04:10,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 10:04:10,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 10:04:10,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 10:04:10,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 10:04:10" (1/1) ... [2021-06-05 10:04:10,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@823832b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:10, skipping insertion in model container [2021-06-05 10:04:10,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 10:04:10" (1/1) ... [2021-06-05 10:04:10,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 10:04:10,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 10:04:10,237 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i[950,963] [2021-06-05 10:04:10,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 10:04:10,427 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 10:04:10,443 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i[950,963] [2021-06-05 10:04:10,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 10:04:10,562 INFO L208 MainTranslator]: Completed translation [2021-06-05 10:04:10,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:10 WrapperNode [2021-06-05 10:04:10,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 10:04:10,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 10:04:10,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 10:04:10,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 10:04:10,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:10" (1/1) ... [2021-06-05 10:04:10,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:10" (1/1) ... [2021-06-05 10:04:10,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 10:04:10,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 10:04:10,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 10:04:10,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 10:04:10,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:10" (1/1) ... [2021-06-05 10:04:10,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:10" (1/1) ... [2021-06-05 10:04:10,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:10" (1/1) ... [2021-06-05 10:04:10,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:10" (1/1) ... [2021-06-05 10:04:10,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:10" (1/1) ... [2021-06-05 10:04:10,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:10" (1/1) ... [2021-06-05 10:04:10,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:10" (1/1) ... [2021-06-05 10:04:10,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 10:04:10,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 10:04:10,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 10:04:10,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 10:04:10,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:10" (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 [2021-06-05 10:04:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 10:04:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 10:04:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 10:04:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 10:04:10,735 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 10:04:10,736 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 10:04:10,736 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 10:04:10,736 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 10:04:10,736 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 10:04:10,736 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 10:04:10,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 10:04:10,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 10:04:10,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 10:04:10,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 10:04:10,738 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 10:04:11,072 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 10:04:11,073 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 10:04:11,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:04:11 BoogieIcfgContainer [2021-06-05 10:04:11,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 10:04:11,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 10:04:11,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 10:04:11,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 10:04:11,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 10:04:10" (1/3) ... [2021-06-05 10:04:11,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d03c905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:04:11, skipping insertion in model container [2021-06-05 10:04:11,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:04:10" (2/3) ... [2021-06-05 10:04:11,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d03c905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:04:11, skipping insertion in model container [2021-06-05 10:04:11,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:04:11" (3/3) ... [2021-06-05 10:04:11,081 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2021-06-05 10:04:11,086 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 10:04:11,087 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 10:04:11,087 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 10:04:11,088 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 10:04:11,112 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,112 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,112 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,112 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,112 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,113 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,113 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,113 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,113 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,113 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,114 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,114 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,114 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,114 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,115 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,115 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,115 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,115 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,115 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,115 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,116 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,116 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,116 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,116 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,116 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,117 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,117 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,117 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,117 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,117 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,118 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,118 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,118 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,118 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,120 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,120 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,120 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,120 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,124 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,125 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,125 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,125 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,127 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,127 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:04:11,129 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 10:04:11,148 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 10:04:11,164 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 10:04:11,164 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 10:04:11,164 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 10:04:11,164 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 10:04:11,164 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 10:04:11,164 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 10:04:11,165 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 10:04:11,165 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 10:04:11,174 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-06-05 10:04:11,785 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:11,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-05 10:04:11,874 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:04:11,875 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:04:11,875 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:04:11,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:04:11,887 INFO L82 PathProgramCache]: Analyzing trace with hash 663437649, now seen corresponding path program 1 times [2021-06-05 10:04:11,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:04:11,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613038535] [2021-06-05 10:04:11,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:04:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:04:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:04:12,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:04:12,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613038535] [2021-06-05 10:04:12,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613038535] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:04:12,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:04:12,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 10:04:12,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140497738] [2021-06-05 10:04:12,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 10:04:12,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:04:12,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 10:04:12,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 10:04:12,410 INFO L87 Difference]: Start difference. First operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:12,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:04:12,907 INFO L93 Difference]: Finished difference Result 20552 states and 70760 transitions. [2021-06-05 10:04:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:04:12,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-06-05 10:04:12,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:04:12,969 INFO L225 Difference]: With dead ends: 20552 [2021-06-05 10:04:12,969 INFO L226 Difference]: Without dead ends: 7210 [2021-06-05 10:04:12,970 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 247.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:04:13,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7210 states. [2021-06-05 10:04:13,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7210 to 6088. [2021-06-05 10:04:13,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6088 states, 6087 states have (on average 3.36602595695745) internal successors, (20489), 6087 states have internal predecessors, (20489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6088 states to 6088 states and 20489 transitions. [2021-06-05 10:04:13,447 INFO L78 Accepts]: Start accepts. Automaton has 6088 states and 20489 transitions. Word has length 49 [2021-06-05 10:04:13,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:04:13,451 INFO L482 AbstractCegarLoop]: Abstraction has 6088 states and 20489 transitions. [2021-06-05 10:04:13,452 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:13,452 INFO L276 IsEmpty]: Start isEmpty. Operand 6088 states and 20489 transitions. [2021-06-05 10:04:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-05 10:04:13,472 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:04:13,472 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:04:13,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 10:04:13,473 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:04:13,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:04:13,476 INFO L82 PathProgramCache]: Analyzing trace with hash -831184694, now seen corresponding path program 1 times [2021-06-05 10:04:13,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:04:13,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360044066] [2021-06-05 10:04:13,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:04:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:04:13,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:04:13,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:04:13,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360044066] [2021-06-05 10:04:13,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360044066] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:04:13,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:04:13,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:04:13,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105883595] [2021-06-05 10:04:13,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:04:13,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:04:13,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:04:13,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:04:13,715 INFO L87 Difference]: Start difference. First operand 6088 states and 20489 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:14,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:04:14,018 INFO L93 Difference]: Finished difference Result 7872 states and 26124 transitions. [2021-06-05 10:04:14,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 10:04:14,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-06-05 10:04:14,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:04:14,060 INFO L225 Difference]: With dead ends: 7872 [2021-06-05 10:04:14,060 INFO L226 Difference]: Without dead ends: 6460 [2021-06-05 10:04:14,061 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 235.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:04:14,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6460 states. [2021-06-05 10:04:14,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6460 to 5208. [2021-06-05 10:04:14,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5208 states, 5207 states have (on average 3.360860380257346) internal successors, (17500), 5207 states have internal predecessors, (17500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:14,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5208 states to 5208 states and 17500 transitions. [2021-06-05 10:04:14,252 INFO L78 Accepts]: Start accepts. Automaton has 5208 states and 17500 transitions. Word has length 51 [2021-06-05 10:04:14,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:04:14,253 INFO L482 AbstractCegarLoop]: Abstraction has 5208 states and 17500 transitions. [2021-06-05 10:04:14,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:14,253 INFO L276 IsEmpty]: Start isEmpty. Operand 5208 states and 17500 transitions. [2021-06-05 10:04:14,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 10:04:14,266 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:04:14,266 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:04:14,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 10:04:14,266 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:04:14,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:04:14,271 INFO L82 PathProgramCache]: Analyzing trace with hash 2138163718, now seen corresponding path program 1 times [2021-06-05 10:04:14,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:04:14,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948645246] [2021-06-05 10:04:14,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:04:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:04:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:04:14,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:04:14,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948645246] [2021-06-05 10:04:14,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948645246] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:04:14,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:04:14,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 10:04:14,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234833939] [2021-06-05 10:04:14,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 10:04:14,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:04:14,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 10:04:14,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 10:04:14,401 INFO L87 Difference]: Start difference. First operand 5208 states and 17500 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:14,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:04:14,654 INFO L93 Difference]: Finished difference Result 6818 states and 22792 transitions. [2021-06-05 10:04:14,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 10:04:14,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-05 10:04:14,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:04:14,667 INFO L225 Difference]: With dead ends: 6818 [2021-06-05 10:04:14,668 INFO L226 Difference]: Without dead ends: 3270 [2021-06-05 10:04:14,668 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 154.1ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:04:14,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2021-06-05 10:04:14,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 3270. [2021-06-05 10:04:14,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3270 states, 3269 states have (on average 3.241358213520954) internal successors, (10596), 3269 states have internal predecessors, (10596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:14,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 10596 transitions. [2021-06-05 10:04:14,759 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 10596 transitions. Word has length 52 [2021-06-05 10:04:14,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:04:14,759 INFO L482 AbstractCegarLoop]: Abstraction has 3270 states and 10596 transitions. [2021-06-05 10:04:14,759 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:14,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 10596 transitions. [2021-06-05 10:04:14,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 10:04:14,767 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:04:14,800 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:04:14,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 10:04:14,800 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:04:14,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:04:14,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1066159869, now seen corresponding path program 1 times [2021-06-05 10:04:14,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:04:14,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653073147] [2021-06-05 10:04:14,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:04:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:04:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:04:14,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:04:14,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653073147] [2021-06-05 10:04:14,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653073147] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:04:14,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:04:14,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:04:14,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397935991] [2021-06-05 10:04:14,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:04:14,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:04:14,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:04:14,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:04:14,907 INFO L87 Difference]: Start difference. First operand 3270 states and 10596 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:15,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:04:15,090 INFO L93 Difference]: Finished difference Result 3986 states and 12801 transitions. [2021-06-05 10:04:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 10:04:15,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-06-05 10:04:15,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:04:15,102 INFO L225 Difference]: With dead ends: 3986 [2021-06-05 10:04:15,103 INFO L226 Difference]: Without dead ends: 3538 [2021-06-05 10:04:15,103 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 157.5ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-06-05 10:04:15,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2021-06-05 10:04:15,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 3078. [2021-06-05 10:04:15,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 3077 states have (on average 3.225219369515762) internal successors, (9924), 3077 states have internal predecessors, (9924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:15,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 9924 transitions. [2021-06-05 10:04:15,190 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 9924 transitions. Word has length 55 [2021-06-05 10:04:15,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:04:15,190 INFO L482 AbstractCegarLoop]: Abstraction has 3078 states and 9924 transitions. [2021-06-05 10:04:15,190 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:15,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 9924 transitions. [2021-06-05 10:04:15,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-05 10:04:15,198 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:04:15,199 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:04:15,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 10:04:15,202 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:04:15,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:04:15,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1232463540, now seen corresponding path program 1 times [2021-06-05 10:04:15,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:04:15,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475450936] [2021-06-05 10:04:15,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:04:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:04:15,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:04:15,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:04:15,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475450936] [2021-06-05 10:04:15,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475450936] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:04:15,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:04:15,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:04:15,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111442185] [2021-06-05 10:04:15,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:04:15,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:04:15,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:04:15,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:04:15,351 INFO L87 Difference]: Start difference. First operand 3078 states and 9924 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:15,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:04:15,630 INFO L93 Difference]: Finished difference Result 5066 states and 16295 transitions. [2021-06-05 10:04:15,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 10:04:15,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-06-05 10:04:15,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:04:15,639 INFO L225 Difference]: With dead ends: 5066 [2021-06-05 10:04:15,639 INFO L226 Difference]: Without dead ends: 2926 [2021-06-05 10:04:15,640 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 214.3ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-06-05 10:04:15,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2021-06-05 10:04:15,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2798. [2021-06-05 10:04:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 3.1555237754737218) internal successors, (8826), 2797 states have internal predecessors, (8826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:15,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 8826 transitions. [2021-06-05 10:04:15,714 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 8826 transitions. Word has length 56 [2021-06-05 10:04:15,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:04:15,715 INFO L482 AbstractCegarLoop]: Abstraction has 2798 states and 8826 transitions. [2021-06-05 10:04:15,715 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:15,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 8826 transitions. [2021-06-05 10:04:15,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 10:04:15,721 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:04:15,721 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:04:15,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 10:04:15,722 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:04:15,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:04:15,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1506580816, now seen corresponding path program 1 times [2021-06-05 10:04:15,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:04:15,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930808202] [2021-06-05 10:04:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:04:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:04:15,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:04:15,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:04:15,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930808202] [2021-06-05 10:04:15,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930808202] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:04:15,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:04:15,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 10:04:15,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484440643] [2021-06-05 10:04:15,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 10:04:15,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:04:15,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 10:04:15,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 10:04:15,810 INFO L87 Difference]: Start difference. First operand 2798 states and 8826 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:15,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:04:15,920 INFO L93 Difference]: Finished difference Result 3538 states and 11087 transitions. [2021-06-05 10:04:15,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:04:15,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 10:04:15,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:04:15,928 INFO L225 Difference]: With dead ends: 3538 [2021-06-05 10:04:15,928 INFO L226 Difference]: Without dead ends: 2586 [2021-06-05 10:04:15,928 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 85.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:04:15,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2021-06-05 10:04:16,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 2586. [2021-06-05 10:04:16,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2586 states, 2585 states have (on average 3.1152804642166343) internal successors, (8053), 2585 states have internal predecessors, (8053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:16,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 8053 transitions. [2021-06-05 10:04:16,036 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 8053 transitions. Word has length 57 [2021-06-05 10:04:16,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:04:16,037 INFO L482 AbstractCegarLoop]: Abstraction has 2586 states and 8053 transitions. [2021-06-05 10:04:16,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:16,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 8053 transitions. [2021-06-05 10:04:16,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-05 10:04:16,044 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:04:16,044 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:04:16,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 10:04:16,044 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:04:16,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:04:16,045 INFO L82 PathProgramCache]: Analyzing trace with hash -208209097, now seen corresponding path program 1 times [2021-06-05 10:04:16,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:04:16,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259606721] [2021-06-05 10:04:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:04:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:04:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:04:16,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:04:16,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259606721] [2021-06-05 10:04:16,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259606721] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:04:16,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:04:16,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:04:16,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890186812] [2021-06-05 10:04:16,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:04:16,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:04:16,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:04:16,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:04:16,173 INFO L87 Difference]: Start difference. First operand 2586 states and 8053 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:16,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:04:16,318 INFO L93 Difference]: Finished difference Result 2838 states and 8707 transitions. [2021-06-05 10:04:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 10:04:16,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-06-05 10:04:16,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:04:16,325 INFO L225 Difference]: With dead ends: 2838 [2021-06-05 10:04:16,325 INFO L226 Difference]: Without dead ends: 2046 [2021-06-05 10:04:16,326 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 108.0ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 10:04:16,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2021-06-05 10:04:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 2046. [2021-06-05 10:04:16,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2046 states, 2045 states have (on average 3.0136919315403423) internal successors, (6163), 2045 states have internal predecessors, (6163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 6163 transitions. [2021-06-05 10:04:16,383 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 6163 transitions. Word has length 58 [2021-06-05 10:04:16,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:04:16,383 INFO L482 AbstractCegarLoop]: Abstraction has 2046 states and 6163 transitions. [2021-06-05 10:04:16,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:16,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 6163 transitions. [2021-06-05 10:04:16,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 10:04:16,390 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:04:16,390 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:04:16,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 10:04:16,390 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:04:16,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:04:16,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1710207794, now seen corresponding path program 1 times [2021-06-05 10:04:16,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:04:16,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616260398] [2021-06-05 10:04:16,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:04:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:04:16,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:04:16,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:04:16,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616260398] [2021-06-05 10:04:16,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616260398] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:04:16,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:04:16,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 10:04:16,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936851751] [2021-06-05 10:04:16,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 10:04:16,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:04:16,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 10:04:16,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 10:04:16,527 INFO L87 Difference]: Start difference. First operand 2046 states and 6163 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:16,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:04:16,677 INFO L93 Difference]: Finished difference Result 1857 states and 5470 transitions. [2021-06-05 10:04:16,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 10:04:16,678 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 10:04:16,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:04:16,681 INFO L225 Difference]: With dead ends: 1857 [2021-06-05 10:04:16,682 INFO L226 Difference]: Without dead ends: 1425 [2021-06-05 10:04:16,682 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 125.9ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:04:16,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2021-06-05 10:04:16,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1425. [2021-06-05 10:04:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1424 states have (on average 2.874297752808989) internal successors, (4093), 1424 states have internal predecessors, (4093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 4093 transitions. [2021-06-05 10:04:16,719 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 4093 transitions. Word has length 59 [2021-06-05 10:04:16,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:04:16,719 INFO L482 AbstractCegarLoop]: Abstraction has 1425 states and 4093 transitions. [2021-06-05 10:04:16,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:16,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 4093 transitions. [2021-06-05 10:04:16,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 10:04:16,723 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:04:16,723 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:04:16,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 10:04:16,723 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:04:16,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:04:16,724 INFO L82 PathProgramCache]: Analyzing trace with hash -923107177, now seen corresponding path program 1 times [2021-06-05 10:04:16,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:04:16,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247927702] [2021-06-05 10:04:16,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:04:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:04:16,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:04:16,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:04:16,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247927702] [2021-06-05 10:04:16,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247927702] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:04:16,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:04:16,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:04:16,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189108575] [2021-06-05 10:04:16,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:04:16,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:04:16,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:04:16,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:04:16,820 INFO L87 Difference]: Start difference. First operand 1425 states and 4093 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:16,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:04:16,898 INFO L93 Difference]: Finished difference Result 2168 states and 6265 transitions. [2021-06-05 10:04:16,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 10:04:16,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-06-05 10:04:16,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:04:16,901 INFO L225 Difference]: With dead ends: 2168 [2021-06-05 10:04:16,902 INFO L226 Difference]: Without dead ends: 1050 [2021-06-05 10:04:16,902 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 88.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:04:16,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2021-06-05 10:04:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1050. [2021-06-05 10:04:16,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 1049 states have (on average 2.8045757864632983) internal successors, (2942), 1049 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:16,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 2942 transitions. [2021-06-05 10:04:16,924 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 2942 transitions. Word has length 61 [2021-06-05 10:04:16,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:04:16,924 INFO L482 AbstractCegarLoop]: Abstraction has 1050 states and 2942 transitions. [2021-06-05 10:04:16,924 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:16,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 2942 transitions. [2021-06-05 10:04:16,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 10:04:16,926 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:04:16,926 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:04:16,927 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 10:04:16,927 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:04:16,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:04:16,927 INFO L82 PathProgramCache]: Analyzing trace with hash -997388845, now seen corresponding path program 2 times [2021-06-05 10:04:16,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:04:16,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126305900] [2021-06-05 10:04:16,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:04:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:04:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:04:17,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:04:17,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126305900] [2021-06-05 10:04:17,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126305900] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:04:17,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:04:17,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 10:04:17,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177530980] [2021-06-05 10:04:17,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 10:04:17,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:04:17,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 10:04:17,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 10:04:17,024 INFO L87 Difference]: Start difference. First operand 1050 states and 2942 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:17,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:04:17,088 INFO L93 Difference]: Finished difference Result 996 states and 2780 transitions. [2021-06-05 10:04:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 10:04:17,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-06-05 10:04:17,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:04:17,089 INFO L225 Difference]: With dead ends: 996 [2021-06-05 10:04:17,089 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 10:04:17,089 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-05 10:04:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 10:04:17,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 10:04:17,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:17,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 10:04:17,090 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-06-05 10:04:17,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:04:17,090 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 10:04:17,090 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:04:17,090 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 10:04:17,090 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 10:04:17,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 10:04:17,092 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 10:04:17,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 10:04:17 BasicIcfg [2021-06-05 10:04:17,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 10:04:17,095 INFO L168 Benchmark]: Toolchain (without parser) took 7054.15 ms. Allocated memory was 352.3 MB in the beginning and 1.2 GB in the end (delta: 897.6 MB). Free memory was 314.6 MB in the beginning and 1.0 GB in the end (delta: -735.3 MB). Peak memory consumption was 162.7 MB. Max. memory is 16.0 GB. [2021-06-05 10:04:17,095 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 352.3 MB. Free memory was 333.0 MB in the beginning and 333.0 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 10:04:17,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.33 ms. Allocated memory is still 352.3 MB. Free memory was 314.4 MB in the beginning and 313.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-06-05 10:04:17,095 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.92 ms. Allocated memory is still 352.3 MB. Free memory was 313.1 MB in the beginning and 311.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 10:04:17,095 INFO L168 Benchmark]: Boogie Preprocessor took 29.61 ms. Allocated memory is still 352.3 MB. Free memory was 311.1 MB in the beginning and 310.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 10:04:17,096 INFO L168 Benchmark]: RCFGBuilder took 421.71 ms. Allocated memory is still 352.3 MB. Free memory was 310.0 MB in the beginning and 284.9 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 10:04:17,096 INFO L168 Benchmark]: TraceAbstraction took 6017.99 ms. Allocated memory was 352.3 MB in the beginning and 1.2 GB in the end (delta: 897.6 MB). Free memory was 283.8 MB in the beginning and 1.0 GB in the end (delta: -766.1 MB). Peak memory consumption was 132.5 MB. Max. memory is 16.0 GB. [2021-06-05 10:04:17,097 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 352.3 MB. Free memory was 333.0 MB in the beginning and 333.0 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 519.33 ms. Allocated memory is still 352.3 MB. Free memory was 314.4 MB in the beginning and 313.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 57.92 ms. Allocated memory is still 352.3 MB. Free memory was 313.1 MB in the beginning and 311.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.61 ms. Allocated memory is still 352.3 MB. Free memory was 311.1 MB in the beginning and 310.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 421.71 ms. Allocated memory is still 352.3 MB. Free memory was 310.0 MB in the beginning and 284.9 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6017.99 ms. Allocated memory was 352.3 MB in the beginning and 1.2 GB in the end (delta: 897.6 MB). Free memory was 283.8 MB in the beginning and 1.0 GB in the end (delta: -766.1 MB). Peak memory consumption was 132.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5929.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 160.9ms, AutomataDifference: 2281.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 620.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1100 SDtfs, 1740 SDslu, 3779 SDs, 0 SdLazy, 433 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 378.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1511.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1131.2ms AutomataMinimizationTime, 10 MinimizatonAttempts, 2962 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 43.1ms SsaConstructionTime, 234.0ms SatisfiabilityAnalysisTime, 1198.2ms InterpolantComputationTime, 559 NumberOfCodeBlocks, 559 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 549 ConstructedInterpolants, 0 QuantifiedInterpolants, 2275 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...