/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 17:14:19,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 17:14:19,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 17:14:19,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 17:14:19,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 17:14:19,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 17:14:19,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 17:14:19,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 17:14:19,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 17:14:19,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 17:14:19,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 17:14:19,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 17:14:19,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 17:14:19,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 17:14:19,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 17:14:19,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 17:14:19,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 17:14:19,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 17:14:19,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 17:14:19,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 17:14:19,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 17:14:19,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 17:14:19,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 17:14:19,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 17:14:19,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 17:14:19,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 17:14:19,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 17:14:19,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 17:14:19,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 17:14:19,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 17:14:19,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 17:14:19,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 17:14:19,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 17:14:19,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 17:14:19,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 17:14:19,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 17:14:19,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 17:14:19,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 17:14:19,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 17:14:19,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 17:14:19,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 17:14:19,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-11-09 17:14:19,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 17:14:19,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 17:14:19,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 17:14:19,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 17:14:19,878 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 17:14:19,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 17:14:19,879 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 17:14:19,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 17:14:19,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 17:14:19,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 17:14:19,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 17:14:19,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 17:14:19,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 17:14:19,881 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 17:14:19,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 17:14:19,881 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 17:14:19,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 17:14:19,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 17:14:19,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 17:14:19,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 17:14:19,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 17:14:19,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:14:19,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 17:14:19,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 17:14:19,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 17:14:19,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 17:14:19,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 17:14:19,884 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 17:14:19,884 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 17:14:19,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 17:14:19,885 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 17:14:20,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 17:14:20,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 17:14:20,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 17:14:20,387 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 17:14:20,387 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 17:14:20,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i [2020-11-09 17:14:20,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f260881c/45982b4c0c864459abb101e9499bb444/FLAG07956dd12 [2020-11-09 17:14:21,343 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 17:14:21,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i [2020-11-09 17:14:21,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f260881c/45982b4c0c864459abb101e9499bb444/FLAG07956dd12 [2020-11-09 17:14:21,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f260881c/45982b4c0c864459abb101e9499bb444 [2020-11-09 17:14:21,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 17:14:21,571 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 17:14:21,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 17:14:21,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 17:14:21,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 17:14:21,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:14:21" (1/1) ... [2020-11-09 17:14:21,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ba3e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:21, skipping insertion in model container [2020-11-09 17:14:21,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:14:21" (1/1) ... [2020-11-09 17:14:21,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 17:14:21,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 17:14:22,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:14:22,052 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 17:14:22,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:14:22,283 INFO L208 MainTranslator]: Completed translation [2020-11-09 17:14:22,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:22 WrapperNode [2020-11-09 17:14:22,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 17:14:22,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 17:14:22,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 17:14:22,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 17:14:22,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:22" (1/1) ... [2020-11-09 17:14:22,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:22" (1/1) ... [2020-11-09 17:14:22,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 17:14:22,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 17:14:22,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 17:14:22,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 17:14:22,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:22" (1/1) ... [2020-11-09 17:14:22,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:22" (1/1) ... [2020-11-09 17:14:22,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:22" (1/1) ... [2020-11-09 17:14:22,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:22" (1/1) ... [2020-11-09 17:14:22,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:22" (1/1) ... [2020-11-09 17:14:22,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:22" (1/1) ... [2020-11-09 17:14:22,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:22" (1/1) ... [2020-11-09 17:14:22,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 17:14:22,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 17:14:22,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 17:14:22,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 17:14:22,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:14:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 17:14:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 17:14:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 17:14:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 17:14:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 17:14:22,527 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 17:14:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 17:14:22,527 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 17:14:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 17:14:22,528 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 17:14:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 17:14:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 17:14:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 17:14:22,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 17:14:22,530 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 17:14:23,074 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 17:14:23,075 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 17:14:23,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:14:23 BoogieIcfgContainer [2020-11-09 17:14:23,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 17:14:23,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 17:14:23,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 17:14:23,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 17:14:23,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:14:21" (1/3) ... [2020-11-09 17:14:23,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c724d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:14:23, skipping insertion in model container [2020-11-09 17:14:23,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:14:22" (2/3) ... [2020-11-09 17:14:23,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c724d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:14:23, skipping insertion in model container [2020-11-09 17:14:23,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:14:23" (3/3) ... [2020-11-09 17:14:23,090 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_rmo.oepc.i [2020-11-09 17:14:23,110 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 17:14:23,111 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 17:14:23,116 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 17:14:23,117 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 17:14:23,175 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,176 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,176 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,176 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,177 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,177 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,177 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,177 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,178 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,178 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,178 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,178 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,179 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,179 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,180 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,180 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,180 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,180 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,180 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,181 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,181 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,181 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,182 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,182 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,184 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,186 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,186 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,186 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,187 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,187 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,192 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,192 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,194 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,194 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,209 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,210 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,210 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,210 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,222 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,222 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,223 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,226 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,227 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,227 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,227 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:14:23,232 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 17:14:23,248 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 17:14:23,293 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:14:23,293 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:14:23,293 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:14:23,294 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:14:23,294 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:14:23,294 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:14:23,294 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:14:23,294 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:14:23,318 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:14:23,319 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 17:14:23,324 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 17:14:23,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 17:14:23,408 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 17:14:23,408 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 17:14:23,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 17:14:23,422 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 17:14:26,278 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-09 17:14:27,452 WARN L194 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-09 17:14:27,586 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-09 17:14:27,836 WARN L194 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-09 17:14:27,961 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-09 17:14:28,106 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:14:28,225 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:14:28,345 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:14:28,468 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:14:28,475 INFO L131 LiptonReduction]: Checked pairs total: 2778 [2020-11-09 17:14:28,475 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-11-09 17:14:28,488 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-09 17:14:28,520 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-09 17:14:28,522 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-09 17:14:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:14:28,530 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:28,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:28,531 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:28,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:28,538 INFO L82 PathProgramCache]: Analyzing trace with hash -345538935, now seen corresponding path program 1 times [2020-11-09 17:14:28,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:28,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890806523] [2020-11-09 17:14:28,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:28,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:28,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890806523] [2020-11-09 17:14:28,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:28,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:14:28,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2002617161] [2020-11-09 17:14:28,754 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:28,761 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:28,781 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:14:28,782 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:28,790 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:14:28,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 17:14:28,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:28,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 17:14:28,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 17:14:28,829 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-09 17:14:28,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:28,878 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-09 17:14:28,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 17:14:28,880 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 17:14:28,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:28,911 INFO L225 Difference]: With dead ends: 362 [2020-11-09 17:14:28,911 INFO L226 Difference]: Without dead ends: 298 [2020-11-09 17:14:28,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 17:14:28,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-09 17:14:28,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-09 17:14:29,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-09 17:14:29,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-09 17:14:29,005 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-09 17:14:29,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:29,006 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-09 17:14:29,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 17:14:29,006 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-09 17:14:29,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 17:14:29,008 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:29,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:29,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 17:14:29,009 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:29,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:29,010 INFO L82 PathProgramCache]: Analyzing trace with hash -2121797576, now seen corresponding path program 1 times [2020-11-09 17:14:29,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:29,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189252825] [2020-11-09 17:14:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:29,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189252825] [2020-11-09 17:14:29,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:29,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:14:29,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1034868231] [2020-11-09 17:14:29,169 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:29,169 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:29,171 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-11-09 17:14:29,171 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:29,171 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:14:29,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:14:29,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:29,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:14:29,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:14:29,175 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-11-09 17:14:29,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:29,218 INFO L93 Difference]: Finished difference Result 298 states and 816 transitions. [2020-11-09 17:14:29,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:14:29,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 17:14:29,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:29,222 INFO L225 Difference]: With dead ends: 298 [2020-11-09 17:14:29,222 INFO L226 Difference]: Without dead ends: 234 [2020-11-09 17:14:29,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:14:29,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-09 17:14:29,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-11-09 17:14:29,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-09 17:14:29,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 640 transitions. [2020-11-09 17:14:29,240 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 640 transitions. Word has length 9 [2020-11-09 17:14:29,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:29,240 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 640 transitions. [2020-11-09 17:14:29,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:14:29,240 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 640 transitions. [2020-11-09 17:14:29,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 17:14:29,242 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:29,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:29,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 17:14:29,244 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:29,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:29,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1060758680, now seen corresponding path program 1 times [2020-11-09 17:14:29,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:29,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936958307] [2020-11-09 17:14:29,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:29,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936958307] [2020-11-09 17:14:29,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:29,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:14:29,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [778526308] [2020-11-09 17:14:29,333 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:29,334 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:29,337 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 15 transitions. [2020-11-09 17:14:29,337 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:29,376 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:14:29,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:14:29,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:29,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:14:29,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:14:29,378 INFO L87 Difference]: Start difference. First operand 234 states and 640 transitions. Second operand 4 states. [2020-11-09 17:14:29,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:29,460 INFO L93 Difference]: Finished difference Result 346 states and 916 transitions. [2020-11-09 17:14:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:14:29,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 17:14:29,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:29,467 INFO L225 Difference]: With dead ends: 346 [2020-11-09 17:14:29,467 INFO L226 Difference]: Without dead ends: 164 [2020-11-09 17:14:29,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:14:29,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-11-09 17:14:29,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-11-09 17:14:29,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-11-09 17:14:29,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 432 transitions. [2020-11-09 17:14:29,502 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 432 transitions. Word has length 11 [2020-11-09 17:14:29,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:29,502 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 432 transitions. [2020-11-09 17:14:29,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:14:29,503 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 432 transitions. [2020-11-09 17:14:29,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 17:14:29,508 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:29,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:29,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 17:14:29,509 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:29,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:29,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1476250237, now seen corresponding path program 1 times [2020-11-09 17:14:29,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:29,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713541484] [2020-11-09 17:14:29,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:29,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713541484] [2020-11-09 17:14:29,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:29,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:14:29,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1976641172] [2020-11-09 17:14:29,698 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:29,701 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:29,705 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-11-09 17:14:29,705 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:29,742 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:14:29,777 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:14:29,808 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:14:29,816 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3229#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 17:14:29,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:14:29,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:29,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:14:29,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:14:29,817 INFO L87 Difference]: Start difference. First operand 164 states and 432 transitions. Second operand 5 states. [2020-11-09 17:14:29,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:29,935 INFO L93 Difference]: Finished difference Result 139 states and 326 transitions. [2020-11-09 17:14:29,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:14:29,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 17:14:29,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:29,937 INFO L225 Difference]: With dead ends: 139 [2020-11-09 17:14:29,937 INFO L226 Difference]: Without dead ends: 87 [2020-11-09 17:14:29,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:14:29,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-09 17:14:29,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-11-09 17:14:29,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-09 17:14:29,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 172 transitions. [2020-11-09 17:14:29,946 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 172 transitions. Word has length 12 [2020-11-09 17:14:29,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:29,946 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 172 transitions. [2020-11-09 17:14:29,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:14:29,947 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 172 transitions. [2020-11-09 17:14:29,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 17:14:29,948 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:29,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:29,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 17:14:29,948 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:29,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:29,949 INFO L82 PathProgramCache]: Analyzing trace with hash 809328863, now seen corresponding path program 1 times [2020-11-09 17:14:29,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:29,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839875596] [2020-11-09 17:14:29,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:30,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839875596] [2020-11-09 17:14:30,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:30,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 17:14:30,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1631481700] [2020-11-09 17:14:30,101 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:30,103 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:30,107 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-11-09 17:14:30,107 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:30,120 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3553#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 17:14:30,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 17:14:30,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:30,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 17:14:30,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:14:30,122 INFO L87 Difference]: Start difference. First operand 87 states and 172 transitions. Second operand 7 states. [2020-11-09 17:14:30,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:30,183 INFO L93 Difference]: Finished difference Result 76 states and 148 transitions. [2020-11-09 17:14:30,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:14:30,184 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-09 17:14:30,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:30,184 INFO L225 Difference]: With dead ends: 76 [2020-11-09 17:14:30,185 INFO L226 Difference]: Without dead ends: 67 [2020-11-09 17:14:30,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-09 17:14:30,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-09 17:14:30,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-11-09 17:14:30,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-09 17:14:30,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 132 transitions. [2020-11-09 17:14:30,190 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 132 transitions. Word has length 15 [2020-11-09 17:14:30,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:30,190 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 132 transitions. [2020-11-09 17:14:30,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 17:14:30,190 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 132 transitions. [2020-11-09 17:14:30,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 17:14:30,191 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:30,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:30,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 17:14:30,192 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:30,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:30,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1097223765, now seen corresponding path program 1 times [2020-11-09 17:14:30,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:30,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790472188] [2020-11-09 17:14:30,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:30,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:30,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790472188] [2020-11-09 17:14:30,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:30,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-09 17:14:30,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1410687445] [2020-11-09 17:14:30,364 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:30,366 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:30,374 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 68 transitions. [2020-11-09 17:14:30,374 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:30,507 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3776#(and (= ~__unbuffered_p0_EAX~0 1) (<= 1 ~__unbuffered_cnt~0) (<= ~__unbuffered_cnt~0 1)), 3777#(and (= ~__unbuffered_p0_EAX~0 1) (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0))] [2020-11-09 17:14:30,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-09 17:14:30,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:30,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-09 17:14:30,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-11-09 17:14:30,509 INFO L87 Difference]: Start difference. First operand 67 states and 132 transitions. Second operand 12 states. [2020-11-09 17:14:30,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:30,793 INFO L93 Difference]: Finished difference Result 104 states and 194 transitions. [2020-11-09 17:14:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 17:14:30,794 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-09 17:14:30,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:30,796 INFO L225 Difference]: With dead ends: 104 [2020-11-09 17:14:30,796 INFO L226 Difference]: Without dead ends: 57 [2020-11-09 17:14:30,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-11-09 17:14:30,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-09 17:14:30,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2020-11-09 17:14:30,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-09 17:14:30,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 78 transitions. [2020-11-09 17:14:30,802 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 78 transitions. Word has length 18 [2020-11-09 17:14:30,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:30,807 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 78 transitions. [2020-11-09 17:14:30,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-09 17:14:30,807 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 78 transitions. [2020-11-09 17:14:30,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 17:14:30,808 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:30,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:30,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 17:14:30,809 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:30,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:30,810 INFO L82 PathProgramCache]: Analyzing trace with hash -30995043, now seen corresponding path program 2 times [2020-11-09 17:14:30,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:30,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669061008] [2020-11-09 17:14:30,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:31,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669061008] [2020-11-09 17:14:31,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:31,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-09 17:14:31,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1594499211] [2020-11-09 17:14:31,041 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:31,044 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:31,050 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 58 transitions. [2020-11-09 17:14:31,050 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:31,124 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3992#(and (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0) (= ~__unbuffered_p1_EAX~0 1))] [2020-11-09 17:14:31,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 17:14:31,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:31,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 17:14:31,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-11-09 17:14:31,127 INFO L87 Difference]: Start difference. First operand 46 states and 78 transitions. Second operand 11 states. [2020-11-09 17:14:31,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:31,240 INFO L93 Difference]: Finished difference Result 54 states and 87 transitions. [2020-11-09 17:14:31,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-09 17:14:31,241 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-11-09 17:14:31,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:31,242 INFO L225 Difference]: With dead ends: 54 [2020-11-09 17:14:31,242 INFO L226 Difference]: Without dead ends: 44 [2020-11-09 17:14:31,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-11-09 17:14:31,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-09 17:14:31,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-11-09 17:14:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-09 17:14:31,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 74 transitions. [2020-11-09 17:14:31,246 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 74 transitions. Word has length 18 [2020-11-09 17:14:31,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:31,246 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 74 transitions. [2020-11-09 17:14:31,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 17:14:31,246 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 74 transitions. [2020-11-09 17:14:31,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 17:14:31,247 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:31,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:31,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 17:14:31,248 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:31,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:31,248 INFO L82 PathProgramCache]: Analyzing trace with hash -196901277, now seen corresponding path program 3 times [2020-11-09 17:14:31,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:31,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616363457] [2020-11-09 17:14:31,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:31,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616363457] [2020-11-09 17:14:31,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:31,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-09 17:14:31,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [22370321] [2020-11-09 17:14:31,429 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:31,432 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:31,446 INFO L252 McrAutomatonBuilder]: Finished intersection with 49 states and 81 transitions. [2020-11-09 17:14:31,446 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:31,534 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [4149#(and (= ~__unbuffered_p0_EAX~0 1) (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0)), 4150#(and (= ~x~0 1) (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0))] [2020-11-09 17:14:31,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-09 17:14:31,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:31,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-09 17:14:31,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-09 17:14:31,537 INFO L87 Difference]: Start difference. First operand 44 states and 74 transitions. Second operand 12 states. [2020-11-09 17:14:31,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:31,692 INFO L93 Difference]: Finished difference Result 52 states and 83 transitions. [2020-11-09 17:14:31,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-09 17:14:31,693 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-09 17:14:31,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:31,693 INFO L225 Difference]: With dead ends: 52 [2020-11-09 17:14:31,694 INFO L226 Difference]: Without dead ends: 44 [2020-11-09 17:14:31,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-11-09 17:14:31,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-09 17:14:31,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-11-09 17:14:31,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-09 17:14:31,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 72 transitions. [2020-11-09 17:14:31,698 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 72 transitions. Word has length 18 [2020-11-09 17:14:31,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:31,700 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 72 transitions. [2020-11-09 17:14:31,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-09 17:14:31,700 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 72 transitions. [2020-11-09 17:14:31,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 17:14:31,701 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:31,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:31,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 17:14:31,701 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:31,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:31,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1712999733, now seen corresponding path program 4 times [2020-11-09 17:14:31,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:31,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773170492] [2020-11-09 17:14:31,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:31,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:31,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773170492] [2020-11-09 17:14:31,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:31,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-09 17:14:31,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [406894858] [2020-11-09 17:14:31,907 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:31,910 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:31,922 INFO L252 McrAutomatonBuilder]: Finished intersection with 49 states and 81 transitions. [2020-11-09 17:14:31,922 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:32,016 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [4305#(and (= ~__unbuffered_p0_EAX~0 1) (<= 1 ~__unbuffered_cnt~0) (<= ~__unbuffered_cnt~0 1)), 4306#(and (= ~__unbuffered_p0_EAX~0 1) (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0)), 4307#(and (= ~x~0 1) (<= ~__unbuffered_cnt~0 0) (<= 0 ~__unbuffered_cnt~0))] [2020-11-09 17:14:32,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 17:14:32,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:32,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 17:14:32,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-11-09 17:14:32,018 INFO L87 Difference]: Start difference. First operand 44 states and 72 transitions. Second operand 13 states. [2020-11-09 17:14:32,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:32,214 INFO L93 Difference]: Finished difference Result 50 states and 77 transitions. [2020-11-09 17:14:32,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-09 17:14:32,214 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-11-09 17:14:32,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:32,215 INFO L225 Difference]: With dead ends: 50 [2020-11-09 17:14:32,215 INFO L226 Difference]: Without dead ends: 42 [2020-11-09 17:14:32,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-11-09 17:14:32,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-09 17:14:32,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-11-09 17:14:32,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-09 17:14:32,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-11-09 17:14:32,219 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 18 [2020-11-09 17:14:32,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:32,219 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-11-09 17:14:32,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 17:14:32,220 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-11-09 17:14:32,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 17:14:32,220 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:14:32,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:14:32,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 17:14:32,221 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:14:32,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:14:32,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1731427213, now seen corresponding path program 5 times [2020-11-09 17:14:32,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:14:32,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048383943] [2020-11-09 17:14:32,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:14:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:14:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 17:14:32,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048383943] [2020-11-09 17:14:32,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:14:32,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 17:14:32,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1493374774] [2020-11-09 17:14:32,274 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:14:32,276 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:14:32,283 INFO L252 McrAutomatonBuilder]: Finished intersection with 41 states and 58 transitions. [2020-11-09 17:14:32,284 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:14:32,297 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:14:32,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:14:32,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:14:32,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:14:32,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:14:32,299 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-11-09 17:14:32,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:14:32,328 INFO L93 Difference]: Finished difference Result 39 states and 65 transitions. [2020-11-09 17:14:32,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:14:32,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 17:14:32,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:14:32,329 INFO L225 Difference]: With dead ends: 39 [2020-11-09 17:14:32,329 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 17:14:32,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:14:32,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 17:14:32,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 17:14:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 17:14:32,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 17:14:32,330 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-09 17:14:32,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:14:32,331 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 17:14:32,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:14:32,331 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 17:14:32,331 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 17:14:32,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-09 17:14:32,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:14:32 BasicIcfg [2020-11-09 17:14:32,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 17:14:32,337 INFO L168 Benchmark]: Toolchain (without parser) took 10771.28 ms. Allocated memory was 167.8 MB in the beginning and 242.2 MB in the end (delta: 74.4 MB). Free memory was 142.5 MB in the beginning and 151.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 67.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:14:32,338 INFO L168 Benchmark]: CDTParser took 0.89 ms. Allocated memory is still 125.8 MB. Free memory is still 96.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:14:32,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 712.34 ms. Allocated memory is still 167.8 MB. Free memory was 141.8 MB in the beginning and 144.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 29.7 MB. Max. memory is 8.0 GB. [2020-11-09 17:14:32,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.85 ms. Allocated memory is still 167.8 MB. Free memory was 144.9 MB in the beginning and 143.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:14:32,340 INFO L168 Benchmark]: Boogie Preprocessor took 54.12 ms. Allocated memory is still 167.8 MB. Free memory was 143.2 MB in the beginning and 141.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:14:32,341 INFO L168 Benchmark]: RCFGBuilder took 635.44 ms. Allocated memory is still 167.8 MB. Free memory was 141.7 MB in the beginning and 119.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:14:32,342 INFO L168 Benchmark]: TraceAbstraction took 9254.52 ms. Allocated memory was 167.8 MB in the beginning and 242.2 MB in the end (delta: 74.4 MB). Free memory was 119.3 MB in the beginning and 151.5 MB in the end (delta: -32.2 MB). Peak memory consumption was 43.7 MB. Max. memory is 8.0 GB. [2020-11-09 17:14:32,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.89 ms. Allocated memory is still 125.8 MB. Free memory is still 96.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 712.34 ms. Allocated memory is still 167.8 MB. Free memory was 141.8 MB in the beginning and 144.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 29.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 97.85 ms. Allocated memory is still 167.8 MB. Free memory was 144.9 MB in the beginning and 143.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.12 ms. Allocated memory is still 167.8 MB. Free memory was 143.2 MB in the beginning and 141.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 635.44 ms. Allocated memory is still 167.8 MB. Free memory was 141.7 MB in the beginning and 119.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 9254.52 ms. Allocated memory was 167.8 MB in the beginning and 242.2 MB in the end (delta: 74.4 MB). Free memory was 119.3 MB in the beginning and 151.5 MB in the end (delta: -32.2 MB). Peak memory consumption was 43.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 777 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 52 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.1s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2778 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 225 SDtfs, 174 SDslu, 851 SDs, 0 SdLazy, 729 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 48 SyntacticMatches, 9 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 9355 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...