/usr/bin/java -Xmx16000000000 -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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 18:08:09,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 18:08:09,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 18:08:09,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 18:08:09,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 18:08:09,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 18:08:09,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 18:08:09,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 18:08:09,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 18:08:09,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 18:08:09,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 18:08:09,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 18:08:09,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 18:08:09,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 18:08:09,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 18:08:09,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 18:08:09,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 18:08:09,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 18:08:09,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 18:08:09,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 18:08:09,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 18:08:09,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 18:08:09,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 18:08:09,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 18:08:09,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 18:08:09,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 18:08:09,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 18:08:09,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 18:08:09,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 18:08:09,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 18:08:09,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 18:08:09,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 18:08:09,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 18:08:09,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 18:08:09,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 18:08:09,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 18:08:09,201 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2020-11-11 18:08:09,260 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 18:08:09,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 18:08:09,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 18:08:09,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 18:08:09,267 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 18:08:09,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 18:08:09,267 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 18:08:09,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 18:08:09,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 18:08:09,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 18:08:09,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 18:08:09,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 18:08:09,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 18:08:09,270 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 18:08:09,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 18:08:09,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 18:08:09,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 18:08:09,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 18:08:09,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 18:08:09,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 18:08:09,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 18:08:09,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:08:09,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 18:08:09,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 18:08:09,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 18:08:09,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 18:08:09,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 18:08:09,273 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-11 18:08:09,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 18:08:09,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 18:08:09,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 18:08:09,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 18:08:09,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 18:08:09,730 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 18:08:09,730 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 18:08:09,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-11-11 18:08:09,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05fdb59e3/7ccc2d5ad41b4b9b83aad0c622f58152/FLAGdf8b6b720 [2020-11-11 18:08:10,539 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 18:08:10,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-11-11 18:08:10,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05fdb59e3/7ccc2d5ad41b4b9b83aad0c622f58152/FLAGdf8b6b720 [2020-11-11 18:08:10,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05fdb59e3/7ccc2d5ad41b4b9b83aad0c622f58152 [2020-11-11 18:08:10,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 18:08:10,814 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 18:08:10,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 18:08:10,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 18:08:10,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 18:08:10,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:08:10" (1/1) ... [2020-11-11 18:08:10,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71fc78b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:08:10, skipping insertion in model container [2020-11-11 18:08:10,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:08:10" (1/1) ... [2020-11-11 18:08:10,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 18:08:10,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 18:08:11,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:08:11,449 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 18:08:11,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:08:11,681 INFO L208 MainTranslator]: Completed translation [2020-11-11 18:08:11,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:08:11 WrapperNode [2020-11-11 18:08:11,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 18:08:11,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 18:08:11,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 18:08:11,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 18:08:11,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:08:11" (1/1) ... [2020-11-11 18:08:11,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:08:11" (1/1) ... [2020-11-11 18:08:11,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 18:08:11,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 18:08:11,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 18:08:11,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 18:08:11,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:08:11" (1/1) ... [2020-11-11 18:08:11,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:08:11" (1/1) ... [2020-11-11 18:08:11,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:08:11" (1/1) ... [2020-11-11 18:08:11,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:08:11" (1/1) ... [2020-11-11 18:08:11,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:08:11" (1/1) ... [2020-11-11 18:08:11,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:08:11" (1/1) ... [2020-11-11 18:08:11,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:08:11" (1/1) ... [2020-11-11 18:08:11,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 18:08:11,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 18:08:11,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 18:08:11,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 18:08:11,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:08:11" (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 [2020-11-11 18:08:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 18:08:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 18:08:11,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 18:08:11,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 18:08:11,931 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 18:08:11,932 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 18:08:11,932 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 18:08:11,933 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 18:08:11,933 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 18:08:11,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 18:08:11,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 18:08:11,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 18:08:11,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 18:08:11,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 18:08:11,936 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 18:08:12,399 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 18:08:12,400 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 18:08:12,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:08:12 BoogieIcfgContainer [2020-11-11 18:08:12,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 18:08:12,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 18:08:12,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 18:08:12,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 18:08:12,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:08:10" (1/3) ... [2020-11-11 18:08:12,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660902ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:08:12, skipping insertion in model container [2020-11-11 18:08:12,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:08:11" (2/3) ... [2020-11-11 18:08:12,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660902ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:08:12, skipping insertion in model container [2020-11-11 18:08:12,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:08:12" (3/3) ... [2020-11-11 18:08:12,411 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-11-11 18:08:12,428 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 18:08:12,428 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 18:08:12,432 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 18:08:12,433 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 18:08:12,467 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,468 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,468 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,468 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,469 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,469 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,469 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,469 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,470 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,470 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,470 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,471 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,471 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,471 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,472 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,472 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,472 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,472 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,473 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,473 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,473 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,474 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,474 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,474 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,475 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,475 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,475 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,475 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,475 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,476 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,476 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,476 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,477 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,477 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,477 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,477 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,481 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,481 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,489 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,489 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,490 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,490 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,498 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,498 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,499 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,499 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:08:12,504 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 18:08:12,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 18:08:12,539 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 18:08:12,539 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 18:08:12,539 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 18:08:12,539 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 18:08:12,539 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 18:08:12,540 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 18:08:12,540 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 18:08:12,540 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 18:08:12,552 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-11-11 18:08:13,319 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:13,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:13,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-11 18:08:13,410 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:08:13,411 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:08:13,412 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:08:13,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:08:13,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1728151724, now seen corresponding path program 1 times [2020-11-11 18:08:13,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:08:13,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806902772] [2020-11-11 18:08:13,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:08:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:08:13,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:08:13,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806902772] [2020-11-11 18:08:13,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:08:13,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:08:13,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733262843] [2020-11-11 18:08:13,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:08:13,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:08:14,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:08:14,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:08:14,037 INFO L87 Difference]: Start difference. First operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:14,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:08:14,585 INFO L93 Difference]: Finished difference Result 12199 states and 42463 transitions. [2020-11-11 18:08:14,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:08:14,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2020-11-11 18:08:14,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:08:14,673 INFO L225 Difference]: With dead ends: 12199 [2020-11-11 18:08:14,673 INFO L226 Difference]: Without dead ends: 4604 [2020-11-11 18:08:14,676 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:08:14,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4604 states. [2020-11-11 18:08:15,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4604 to 4604. [2020-11-11 18:08:15,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4604 states, 4603 states have (on average 3.4158157723223983) internal successors, (15723), 4603 states have internal predecessors, (15723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4604 states to 4604 states and 15723 transitions. [2020-11-11 18:08:15,074 INFO L78 Accepts]: Start accepts. Automaton has 4604 states and 15723 transitions. Word has length 41 [2020-11-11 18:08:15,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:08:15,076 INFO L481 AbstractCegarLoop]: Abstraction has 4604 states and 15723 transitions. [2020-11-11 18:08:15,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:15,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states and 15723 transitions. [2020-11-11 18:08:15,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-11 18:08:15,087 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:08:15,088 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:08:15,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 18:08:15,088 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:08:15,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:08:15,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1256696077, now seen corresponding path program 1 times [2020-11-11 18:08:15,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:08:15,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788089410] [2020-11-11 18:08:15,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:08:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:08:15,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:08:15,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788089410] [2020-11-11 18:08:15,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:08:15,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:08:15,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533505011] [2020-11-11 18:08:15,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:08:15,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:08:15,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:08:15,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:08:15,275 INFO L87 Difference]: Start difference. First operand 4604 states and 15723 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:15,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:08:15,655 INFO L93 Difference]: Finished difference Result 5024 states and 16944 transitions. [2020-11-11 18:08:15,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:08:15,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2020-11-11 18:08:15,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:08:15,699 INFO L225 Difference]: With dead ends: 5024 [2020-11-11 18:08:15,699 INFO L226 Difference]: Without dead ends: 4044 [2020-11-11 18:08:15,701 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:08:15,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2020-11-11 18:08:15,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 4044. [2020-11-11 18:08:15,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4044 states, 4043 states have (on average 3.382389314865199) internal successors, (13675), 4043 states have internal predecessors, (13675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:15,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4044 states to 4044 states and 13675 transitions. [2020-11-11 18:08:15,996 INFO L78 Accepts]: Start accepts. Automaton has 4044 states and 13675 transitions. Word has length 43 [2020-11-11 18:08:15,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:08:15,998 INFO L481 AbstractCegarLoop]: Abstraction has 4044 states and 13675 transitions. [2020-11-11 18:08:15,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:15,999 INFO L276 IsEmpty]: Start isEmpty. Operand 4044 states and 13675 transitions. [2020-11-11 18:08:16,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-11 18:08:16,020 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:08:16,020 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:08:16,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 18:08:16,020 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:08:16,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:08:16,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1549695500, now seen corresponding path program 1 times [2020-11-11 18:08:16,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:08:16,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77392754] [2020-11-11 18:08:16,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:08:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:08:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:08:16,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77392754] [2020-11-11 18:08:16,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:08:16,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:08:16,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172376740] [2020-11-11 18:08:16,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:08:16,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:08:16,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:08:16,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:08:16,291 INFO L87 Difference]: Start difference. First operand 4044 states and 13675 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:16,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:08:16,613 INFO L93 Difference]: Finished difference Result 4464 states and 14931 transitions. [2020-11-11 18:08:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:08:16,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2020-11-11 18:08:16,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:08:16,649 INFO L225 Difference]: With dead ends: 4464 [2020-11-11 18:08:16,649 INFO L226 Difference]: Without dead ends: 3764 [2020-11-11 18:08:16,650 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:08:16,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2020-11-11 18:08:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3764. [2020-11-11 18:08:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3764 states, 3763 states have (on average 3.361945256444326) internal successors, (12651), 3763 states have internal predecessors, (12651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:16,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 12651 transitions. [2020-11-11 18:08:16,840 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 12651 transitions. Word has length 45 [2020-11-11 18:08:16,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:08:16,841 INFO L481 AbstractCegarLoop]: Abstraction has 3764 states and 12651 transitions. [2020-11-11 18:08:16,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:16,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 12651 transitions. [2020-11-11 18:08:16,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-11 18:08:16,851 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:08:16,852 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:08:16,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 18:08:16,852 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:08:16,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:08:16,854 INFO L82 PathProgramCache]: Analyzing trace with hash 2081473022, now seen corresponding path program 1 times [2020-11-11 18:08:16,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:08:16,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445949719] [2020-11-11 18:08:16,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:08:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:08:17,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:08:17,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445949719] [2020-11-11 18:08:17,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:08:17,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:08:17,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492248743] [2020-11-11 18:08:17,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:08:17,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:08:17,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:08:17,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:08:17,082 INFO L87 Difference]: Start difference. First operand 3764 states and 12651 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:17,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:08:17,311 INFO L93 Difference]: Finished difference Result 4260 states and 14187 transitions. [2020-11-11 18:08:17,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:08:17,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-11-11 18:08:17,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:08:17,359 INFO L225 Difference]: With dead ends: 4260 [2020-11-11 18:08:17,359 INFO L226 Difference]: Without dead ends: 3700 [2020-11-11 18:08:17,360 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:08:17,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3700 states. [2020-11-11 18:08:17,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3700 to 3700. [2020-11-11 18:08:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3700 states, 3699 states have (on average 3.3552311435523112) internal successors, (12411), 3699 states have internal predecessors, (12411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:17,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3700 states to 3700 states and 12411 transitions. [2020-11-11 18:08:17,559 INFO L78 Accepts]: Start accepts. Automaton has 3700 states and 12411 transitions. Word has length 46 [2020-11-11 18:08:17,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:08:17,560 INFO L481 AbstractCegarLoop]: Abstraction has 3700 states and 12411 transitions. [2020-11-11 18:08:17,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:17,560 INFO L276 IsEmpty]: Start isEmpty. Operand 3700 states and 12411 transitions. [2020-11-11 18:08:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-11 18:08:17,573 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:08:17,573 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:08:17,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 18:08:17,574 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:08:17,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:08:17,574 INFO L82 PathProgramCache]: Analyzing trace with hash -306051688, now seen corresponding path program 1 times [2020-11-11 18:08:17,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:08:17,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807406832] [2020-11-11 18:08:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:08:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:08:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:08:17,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807406832] [2020-11-11 18:08:17,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:08:17,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:08:17,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238509927] [2020-11-11 18:08:17,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:08:17,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:08:17,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:08:17,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:08:17,756 INFO L87 Difference]: Start difference. First operand 3700 states and 12411 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:17,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:08:17,939 INFO L93 Difference]: Finished difference Result 5832 states and 19226 transitions. [2020-11-11 18:08:17,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:08:17,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2020-11-11 18:08:17,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:08:17,962 INFO L225 Difference]: With dead ends: 5832 [2020-11-11 18:08:17,962 INFO L226 Difference]: Without dead ends: 4084 [2020-11-11 18:08:17,963 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:08:17,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4084 states. [2020-11-11 18:08:18,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4084 to 3444. [2020-11-11 18:08:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3444 states, 3443 states have (on average 3.2733081614870754) internal successors, (11270), 3443 states have internal predecessors, (11270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:18,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3444 states to 3444 states and 11270 transitions. [2020-11-11 18:08:18,147 INFO L78 Accepts]: Start accepts. Automaton has 3444 states and 11270 transitions. Word has length 47 [2020-11-11 18:08:18,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:08:18,150 INFO L481 AbstractCegarLoop]: Abstraction has 3444 states and 11270 transitions. [2020-11-11 18:08:18,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:18,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3444 states and 11270 transitions. [2020-11-11 18:08:18,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-11 18:08:18,163 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:08:18,163 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:08:18,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 18:08:18,163 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:08:18,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:08:18,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1816760195, now seen corresponding path program 1 times [2020-11-11 18:08:18,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:08:18,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356489857] [2020-11-11 18:08:18,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:08:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:08:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:08:18,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356489857] [2020-11-11 18:08:18,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:08:18,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:08:18,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935508430] [2020-11-11 18:08:18,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:08:18,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:08:18,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:08:18,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:08:18,303 INFO L87 Difference]: Start difference. First operand 3444 states and 11270 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:18,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:08:18,487 INFO L93 Difference]: Finished difference Result 4464 states and 14383 transitions. [2020-11-11 18:08:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:08:18,488 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-11-11 18:08:18,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:08:18,501 INFO L225 Difference]: With dead ends: 4464 [2020-11-11 18:08:18,502 INFO L226 Difference]: Without dead ends: 3092 [2020-11-11 18:08:18,502 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:08:18,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2020-11-11 18:08:18,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3092. [2020-11-11 18:08:18,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3091 states have (on average 3.2034940148819153) internal successors, (9902), 3091 states have internal predecessors, (9902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:18,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 9902 transitions. [2020-11-11 18:08:18,612 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 9902 transitions. Word has length 48 [2020-11-11 18:08:18,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:08:18,612 INFO L481 AbstractCegarLoop]: Abstraction has 3092 states and 9902 transitions. [2020-11-11 18:08:18,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:18,612 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 9902 transitions. [2020-11-11 18:08:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-11 18:08:18,620 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:08:18,620 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:08:18,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 18:08:18,621 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:08:18,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:08:18,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1635595998, now seen corresponding path program 1 times [2020-11-11 18:08:18,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:08:18,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426920710] [2020-11-11 18:08:18,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:08:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:08:18,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:08:18,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426920710] [2020-11-11 18:08:18,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:08:18,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:08:18,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133653994] [2020-11-11 18:08:18,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:08:18,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:08:18,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:08:18,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:08:18,792 INFO L87 Difference]: Start difference. First operand 3092 states and 9902 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:19,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:08:19,097 INFO L93 Difference]: Finished difference Result 3296 states and 10281 transitions. [2020-11-11 18:08:19,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:08:19,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2020-11-11 18:08:19,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:08:19,107 INFO L225 Difference]: With dead ends: 3296 [2020-11-11 18:08:19,107 INFO L226 Difference]: Without dead ends: 2180 [2020-11-11 18:08:19,107 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-11 18:08:19,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2020-11-11 18:08:19,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 2180. [2020-11-11 18:08:19,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2179 states have (on average 3.0509407985314363) internal successors, (6648), 2179 states have internal predecessors, (6648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:19,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 6648 transitions. [2020-11-11 18:08:19,188 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 6648 transitions. Word has length 49 [2020-11-11 18:08:19,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:08:19,189 INFO L481 AbstractCegarLoop]: Abstraction has 2180 states and 6648 transitions. [2020-11-11 18:08:19,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:19,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 6648 transitions. [2020-11-11 18:08:19,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-11 18:08:19,195 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:08:19,196 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:08:19,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 18:08:19,196 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:08:19,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:08:19,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1738964541, now seen corresponding path program 1 times [2020-11-11 18:08:19,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:08:19,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548142519] [2020-11-11 18:08:19,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:08:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:08:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:08:19,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548142519] [2020-11-11 18:08:19,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:08:19,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-11 18:08:19,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553899915] [2020-11-11 18:08:19,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-11 18:08:19,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:08:19,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-11 18:08:19,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-11 18:08:19,341 INFO L87 Difference]: Start difference. First operand 2180 states and 6648 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:19,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:08:19,578 INFO L93 Difference]: Finished difference Result 1820 states and 5394 transitions. [2020-11-11 18:08:19,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-11 18:08:19,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-11 18:08:19,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:08:19,583 INFO L225 Difference]: With dead ends: 1820 [2020-11-11 18:08:19,583 INFO L226 Difference]: Without dead ends: 910 [2020-11-11 18:08:19,584 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-11 18:08:19,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2020-11-11 18:08:19,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 910. [2020-11-11 18:08:19,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 909 states have (on average 2.8800880088008802) internal successors, (2618), 909 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:19,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 2618 transitions. [2020-11-11 18:08:19,616 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 2618 transitions. Word has length 51 [2020-11-11 18:08:19,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:08:19,617 INFO L481 AbstractCegarLoop]: Abstraction has 910 states and 2618 transitions. [2020-11-11 18:08:19,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:19,617 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 2618 transitions. [2020-11-11 18:08:19,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-11 18:08:19,620 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:08:19,620 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:08:19,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 18:08:19,621 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:08:19,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:08:19,621 INFO L82 PathProgramCache]: Analyzing trace with hash -889143118, now seen corresponding path program 1 times [2020-11-11 18:08:19,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:08:19,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321073403] [2020-11-11 18:08:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:08:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:08:19,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:08:19,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321073403] [2020-11-11 18:08:19,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:08:19,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:08:19,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032254130] [2020-11-11 18:08:19,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:08:19,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:08:19,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:08:19,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:08:19,771 INFO L87 Difference]: Start difference. First operand 910 states and 2618 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:19,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:08:19,907 INFO L93 Difference]: Finished difference Result 1281 states and 3699 transitions. [2020-11-11 18:08:19,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 18:08:19,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-11-11 18:08:19,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:08:19,910 INFO L225 Difference]: With dead ends: 1281 [2020-11-11 18:08:19,911 INFO L226 Difference]: Without dead ends: 734 [2020-11-11 18:08:19,911 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:08:19,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2020-11-11 18:08:19,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2020-11-11 18:08:19,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 2.840381991814461) internal successors, (2082), 733 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:19,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 2082 transitions. [2020-11-11 18:08:19,961 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 2082 transitions. Word has length 53 [2020-11-11 18:08:19,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:08:19,962 INFO L481 AbstractCegarLoop]: Abstraction has 734 states and 2082 transitions. [2020-11-11 18:08:19,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:19,962 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 2082 transitions. [2020-11-11 18:08:19,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-11 18:08:19,964 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:08:19,964 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:08:19,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-11 18:08:19,965 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:08:19,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:08:19,965 INFO L82 PathProgramCache]: Analyzing trace with hash 388446026, now seen corresponding path program 2 times [2020-11-11 18:08:19,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:08:19,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675269375] [2020-11-11 18:08:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:08:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:08:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:08:20,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675269375] [2020-11-11 18:08:20,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:08:20,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:08:20,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693279601] [2020-11-11 18:08:20,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:08:20,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:08:20,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:08:20,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:08:20,067 INFO L87 Difference]: Start difference. First operand 734 states and 2082 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:08:20,172 INFO L93 Difference]: Finished difference Result 1137 states and 3259 transitions. [2020-11-11 18:08:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-11 18:08:20,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-11-11 18:08:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:08:20,176 INFO L225 Difference]: With dead ends: 1137 [2020-11-11 18:08:20,176 INFO L226 Difference]: Without dead ends: 690 [2020-11-11 18:08:20,176 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:08:20,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-11-11 18:08:20,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2020-11-11 18:08:20,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 2.827285921625544) internal successors, (1948), 689 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1948 transitions. [2020-11-11 18:08:20,196 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1948 transitions. Word has length 53 [2020-11-11 18:08:20,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:08:20,196 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1948 transitions. [2020-11-11 18:08:20,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:20,196 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1948 transitions. [2020-11-11 18:08:20,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-11 18:08:20,199 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:08:20,199 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:08:20,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-11 18:08:20,199 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:08:20,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:08:20,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1880557810, now seen corresponding path program 3 times [2020-11-11 18:08:20,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:08:20,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150249560] [2020-11-11 18:08:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:08:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:08:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:08:20,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150249560] [2020-11-11 18:08:20,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:08:20,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:08:20,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384020159] [2020-11-11 18:08:20,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:08:20,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:08:20,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:08:20,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:08:20,304 INFO L87 Difference]: Start difference. First operand 690 states and 1948 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:20,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:08:20,401 INFO L93 Difference]: Finished difference Result 582 states and 1624 transitions. [2020-11-11 18:08:20,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 18:08:20,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-11-11 18:08:20,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:08:20,402 INFO L225 Difference]: With dead ends: 582 [2020-11-11 18:08:20,402 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 18:08:20,403 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:08:20,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 18:08:20,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 18:08:20,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:20,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 18:08:20,403 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-11-11 18:08:20,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:08:20,404 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 18:08:20,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:08:20,405 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 18:08:20,405 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 18:08:20,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-11 18:08:20,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:08:20 BasicIcfg [2020-11-11 18:08:20,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 18:08:20,414 INFO L168 Benchmark]: Toolchain (without parser) took 9603.72 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 912.3 MB). Free memory was 276.1 MB in the beginning and 979.4 MB in the end (delta: -703.3 MB). Peak memory consumption was 211.0 MB. Max. memory is 16.0 GB. [2020-11-11 18:08:20,414 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 302.0 MB. Free memory was 272.5 MB in the beginning and 272.3 MB in the end (delta: 279.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:08:20,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 865.95 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 275.1 MB in the end (delta: 369.4 kB). Peak memory consumption was 29.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:08:20,424 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.63 ms. Allocated memory is still 302.0 MB. Free memory was 275.1 MB in the beginning and 273.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:08:20,425 INFO L168 Benchmark]: Boogie Preprocessor took 58.25 ms. Allocated memory is still 302.0 MB. Free memory was 273.1 MB in the beginning and 272.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:08:20,425 INFO L168 Benchmark]: RCFGBuilder took 561.85 ms. Allocated memory is still 302.0 MB. Free memory was 272.0 MB in the beginning and 247.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:08:20,430 INFO L168 Benchmark]: TraceAbstraction took 8006.98 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 912.3 MB). Free memory was 247.9 MB in the beginning and 979.4 MB in the end (delta: -731.5 MB). Peak memory consumption was 181.8 MB. Max. memory is 16.0 GB. [2020-11-11 18:08:20,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 302.0 MB. Free memory was 272.5 MB in the beginning and 272.3 MB in the end (delta: 279.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 865.95 ms. Allocated memory is still 302.0 MB. Free memory was 275.5 MB in the beginning and 275.1 MB in the end (delta: 369.4 kB). Peak memory consumption was 29.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 91.63 ms. Allocated memory is still 302.0 MB. Free memory was 275.1 MB in the beginning and 273.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 58.25 ms. Allocated memory is still 302.0 MB. Free memory was 273.1 MB in the beginning and 272.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 561.85 ms. Allocated memory is still 302.0 MB. Free memory was 272.0 MB in the beginning and 247.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 8006.98 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 912.3 MB). Free memory was 247.9 MB in the beginning and 979.4 MB in the end (delta: -731.5 MB). Peak memory consumption was 181.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.8s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 1047 SDtfs, 1297 SDslu, 3417 SDs, 0 SdLazy, 399 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9847occurred 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: 1.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 640 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 529 NumberOfCodeBlocks, 529 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 518 ConstructedInterpolants, 0 QuantifiedInterpolants, 63772 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...