/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-Delay.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 06:12:17,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 06:12:17,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 06:12:18,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 06:12:18,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 06:12:18,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 06:12:18,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 06:12:18,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 06:12:18,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 06:12:18,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 06:12:18,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 06:12:18,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 06:12:18,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 06:12:18,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 06:12:18,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 06:12:18,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 06:12:18,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 06:12:18,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 06:12:18,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 06:12:18,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 06:12:18,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 06:12:18,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 06:12:18,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 06:12:18,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 06:12:18,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-12 06:12:18,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-12 06:12:18,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-12 06:12:18,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-12 06:12:18,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-12 06:12:18,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-12 06:12:18,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 06:12:18,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 06:12:18,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 06:12:18,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 06:12:18,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 06:12:18,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 06:12:18,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 06:12:18,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 06:12:18,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 06:12:18,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 06:12:18,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 06:12:18,129 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-Delay.epf [2020-11-12 06:12:18,186 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 06:12:18,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 06:12:18,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 06:12:18,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 06:12:18,191 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 06:12:18,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 06:12:18,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 06:12:18,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 06:12:18,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 06:12:18,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 06:12:18,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 06:12:18,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 06:12:18,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 06:12:18,194 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 06:12:18,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 06:12:18,195 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 06:12:18,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 06:12:18,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 06:12:18,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 06:12:18,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 06:12:18,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 06:12:18,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 06:12:18,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 06:12:18,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 06:12:18,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 06:12:18,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 06:12:18,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 06:12:18,198 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 06:12:18,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 06:12:18,198 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 06:12:18,198 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=DELAY_SET 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 06:12:18,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 06:12:18,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 06:12:18,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 06:12:18,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 06:12:18,635 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 06:12:18,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-11-12 06:12:18,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffbecb915/06288ac0814e4888bd86b89ffd5c0cfe/FLAG4ea296945 [2020-11-12 06:12:19,424 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 06:12:19,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-11-12 06:12:19,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffbecb915/06288ac0814e4888bd86b89ffd5c0cfe/FLAG4ea296945 [2020-11-12 06:12:19,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffbecb915/06288ac0814e4888bd86b89ffd5c0cfe [2020-11-12 06:12:19,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 06:12:19,726 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 06:12:19,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 06:12:19,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 06:12:19,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 06:12:19,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:12:19" (1/1) ... [2020-11-12 06:12:19,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@706c2d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:12:19, skipping insertion in model container [2020-11-12 06:12:19,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:12:19" (1/1) ... [2020-11-12 06:12:19,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 06:12:19,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 06:12:20,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 06:12:20,311 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 06:12:20,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 06:12:20,498 INFO L208 MainTranslator]: Completed translation [2020-11-12 06:12:20,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:12:20 WrapperNode [2020-11-12 06:12:20,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 06:12:20,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 06:12:20,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 06:12:20,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 06:12:20,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:12:20" (1/1) ... [2020-11-12 06:12:20,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:12:20" (1/1) ... [2020-11-12 06:12:20,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 06:12:20,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 06:12:20,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 06:12:20,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 06:12:20,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:12:20" (1/1) ... [2020-11-12 06:12:20,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:12:20" (1/1) ... [2020-11-12 06:12:20,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:12:20" (1/1) ... [2020-11-12 06:12:20,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:12:20" (1/1) ... [2020-11-12 06:12:20,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:12:20" (1/1) ... [2020-11-12 06:12:20,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:12:20" (1/1) ... [2020-11-12 06:12:20,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:12:20" (1/1) ... [2020-11-12 06:12:20,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 06:12:20,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 06:12:20,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 06:12:20,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 06:12:20,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:12:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 06:12:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 06:12:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 06:12:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 06:12:20,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 06:12:20,734 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 06:12:20,735 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 06:12:20,736 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 06:12:20,736 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 06:12:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 06:12:20,737 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 06:12:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 06:12:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 06:12:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 06:12:20,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 06:12:20,739 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 06:12:21,251 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 06:12:21,251 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 06:12:21,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:12:21 BoogieIcfgContainer [2020-11-12 06:12:21,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 06:12:21,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 06:12:21,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 06:12:21,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 06:12:21,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:12:19" (1/3) ... [2020-11-12 06:12:21,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a535e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:12:21, skipping insertion in model container [2020-11-12 06:12:21,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:12:20" (2/3) ... [2020-11-12 06:12:21,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a535e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:12:21, skipping insertion in model container [2020-11-12 06:12:21,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:12:21" (3/3) ... [2020-11-12 06:12:21,269 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2020-11-12 06:12:21,286 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 06:12:21,287 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 06:12:21,291 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 06:12:21,292 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 06:12:21,341 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,341 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,341 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,341 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,342 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,342 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,342 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,342 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,343 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,343 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,343 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,343 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,345 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,345 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,345 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,345 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,345 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,346 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,346 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,346 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,347 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,347 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,347 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,347 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,350 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,352 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,355 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,356 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,357 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,357 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,358 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,358 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,359 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,360 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,374 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,374 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,375 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,375 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,382 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,383 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,384 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,388 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,388 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:12:21,394 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 06:12:21,412 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 06:12:21,460 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 06:12:21,460 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 06:12:21,460 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 06:12:21,460 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 06:12:21,461 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 06:12:21,461 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 06:12:21,461 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 06:12:21,461 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 06:12:21,483 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-11-12 06:12:22,665 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 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) [2020-11-12 06:12:23,508 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 840ms [2020-11-12 06:12:23,555 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 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) [2020-11-12 06:12:23,587 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 9848 states, 9155 states have (on average 1.405024576734025) internal successors, (12863), 9847 states have internal predecessors, (12863), 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) [2020-11-12 06:12:23,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 9848 states, 9155 states have (on average 1.405024576734025) internal successors, (12863), 9847 states have internal predecessors, (12863), 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) [2020-11-12 06:12:23,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-12 06:12:23,633 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:12:23,634 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] [2020-11-12 06:12:23,635 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:12:23,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:12:23,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1557079206, now seen corresponding path program 1 times [2020-11-12 06:12:23,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:12:23,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033496851] [2020-11-12 06:12:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:12:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:12:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:12:24,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033496851] [2020-11-12 06:12:24,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:12:24,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:12:24,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004694230] [2020-11-12 06:12:24,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:12:24,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:12:24,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:12:24,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:12:24,126 INFO L87 Difference]: Start difference. First operand has 9848 states, 9155 states have (on average 1.405024576734025) internal successors, (12863), 9847 states have internal predecessors, (12863), 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 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2020-11-12 06:12:24,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:12:24,390 INFO L93 Difference]: Finished difference Result 12200 states and 15003 transitions. [2020-11-12 06:12:24,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:12:24,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 42 [2020-11-12 06:12:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:12:24,434 INFO L225 Difference]: With dead ends: 12200 [2020-11-12 06:12:24,434 INFO L226 Difference]: Without dead ends: 3975 [2020-11-12 06:12:24,436 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 [2020-11-12 06:12:24,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2020-11-12 06:12:24,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3975. [2020-11-12 06:12:24,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3975 states, 3730 states have (on average 1.4750670241286863) internal successors, (5502), 3974 states have internal predecessors, (5502), 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) [2020-11-12 06:12:24,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3975 states to 3975 states and 5502 transitions. [2020-11-12 06:12:24,776 INFO L78 Accepts]: Start accepts. Automaton has 3975 states and 5502 transitions. Word has length 42 [2020-11-12 06:12:24,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:12:24,777 INFO L481 AbstractCegarLoop]: Abstraction has 3975 states and 5502 transitions. [2020-11-12 06:12:24,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2020-11-12 06:12:24,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3975 states and 5502 transitions. [2020-11-12 06:12:24,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-12 06:12:24,793 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:12:24,794 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] [2020-11-12 06:12:24,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 06:12:24,801 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:12:24,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:12:24,804 INFO L82 PathProgramCache]: Analyzing trace with hash 882658663, now seen corresponding path program 1 times [2020-11-12 06:12:24,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:12:24,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221595287] [2020-11-12 06:12:24,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:12:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:12:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:12:25,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221595287] [2020-11-12 06:12:25,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:12:25,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:12:25,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634085237] [2020-11-12 06:12:25,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:12:25,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:12:25,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:12:25,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:12:25,049 INFO L87 Difference]: Start difference. First operand 3975 states and 5502 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2020-11-12 06:12:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:12:25,301 INFO L93 Difference]: Finished difference Result 5095 states and 7544 transitions. [2020-11-12 06:12:25,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 06:12:25,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 44 [2020-11-12 06:12:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:12:25,315 INFO L225 Difference]: With dead ends: 5095 [2020-11-12 06:12:25,315 INFO L226 Difference]: Without dead ends: 2316 [2020-11-12 06:12:25,316 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-12 06:12:25,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2020-11-12 06:12:25,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2316. [2020-11-12 06:12:25,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2316 states, 2176 states have (on average 1.5045955882352942) internal successors, (3274), 2315 states have internal predecessors, (3274), 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) [2020-11-12 06:12:25,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 3274 transitions. [2020-11-12 06:12:25,465 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 3274 transitions. Word has length 44 [2020-11-12 06:12:25,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:12:25,465 INFO L481 AbstractCegarLoop]: Abstraction has 2316 states and 3274 transitions. [2020-11-12 06:12:25,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2020-11-12 06:12:25,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 3274 transitions. [2020-11-12 06:12:25,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 06:12:25,472 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:12:25,472 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] [2020-11-12 06:12:25,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 06:12:25,473 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:12:25,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:12:25,473 INFO L82 PathProgramCache]: Analyzing trace with hash -176270830, now seen corresponding path program 1 times [2020-11-12 06:12:25,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:12:25,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257471682] [2020-11-12 06:12:25,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:12:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:12:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:12:25,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257471682] [2020-11-12 06:12:25,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:12:25,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:12:25,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143640839] [2020-11-12 06:12:25,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:12:25,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:12:25,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:12:25,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:12:25,671 INFO L87 Difference]: Start difference. First operand 2316 states and 3274 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) [2020-11-12 06:12:25,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:12:25,901 INFO L93 Difference]: Finished difference Result 2652 states and 3994 transitions. [2020-11-12 06:12:25,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:12:25,902 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 [2020-11-12 06:12:25,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:12:25,913 INFO L225 Difference]: With dead ends: 2652 [2020-11-12 06:12:25,913 INFO L226 Difference]: Without dead ends: 1924 [2020-11-12 06:12:25,914 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 [2020-11-12 06:12:25,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2020-11-12 06:12:25,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1924. [2020-11-12 06:12:25,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1812 states have (on average 1.4961368653421634) internal successors, (2711), 1923 states have internal predecessors, (2711), 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) [2020-11-12 06:12:25,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2711 transitions. [2020-11-12 06:12:25,976 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2711 transitions. Word has length 47 [2020-11-12 06:12:25,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:12:25,979 INFO L481 AbstractCegarLoop]: Abstraction has 1924 states and 2711 transitions. [2020-11-12 06:12:25,979 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) [2020-11-12 06:12:25,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2711 transitions. [2020-11-12 06:12:25,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-12 06:12:25,985 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:12:25,986 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] [2020-11-12 06:12:25,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 06:12:25,986 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:12:25,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:12:25,987 INFO L82 PathProgramCache]: Analyzing trace with hash 162268976, now seen corresponding path program 1 times [2020-11-12 06:12:25,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:12:25,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180312270] [2020-11-12 06:12:25,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:12:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:12:26,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:12:26,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180312270] [2020-11-12 06:12:26,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:12:26,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:12:26,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982617518] [2020-11-12 06:12:26,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:12:26,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:12:26,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:12:26,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:12:26,189 INFO L87 Difference]: Start difference. First operand 1924 states and 2711 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) [2020-11-12 06:12:26,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:12:26,368 INFO L93 Difference]: Finished difference Result 2116 states and 3191 transitions. [2020-11-12 06:12:26,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:12:26,368 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 [2020-11-12 06:12:26,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:12:26,377 INFO L225 Difference]: With dead ends: 2116 [2020-11-12 06:12:26,377 INFO L226 Difference]: Without dead ends: 1417 [2020-11-12 06:12:26,377 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 [2020-11-12 06:12:26,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2020-11-12 06:12:26,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1417. [2020-11-12 06:12:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1337 states have (on average 1.5123410620792819) internal successors, (2022), 1416 states have internal predecessors, (2022), 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) [2020-11-12 06:12:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 2022 transitions. [2020-11-12 06:12:26,416 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 2022 transitions. Word has length 48 [2020-11-12 06:12:26,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:12:26,417 INFO L481 AbstractCegarLoop]: Abstraction has 1417 states and 2022 transitions. [2020-11-12 06:12:26,417 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) [2020-11-12 06:12:26,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 2022 transitions. [2020-11-12 06:12:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-12 06:12:26,420 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:12:26,420 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] [2020-11-12 06:12:26,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 06:12:26,421 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:12:26,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:12:26,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1846738929, now seen corresponding path program 1 times [2020-11-12 06:12:26,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:12:26,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821333501] [2020-11-12 06:12:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:12:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:12:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:12:26,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821333501] [2020-11-12 06:12:26,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:12:26,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:12:26,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567490797] [2020-11-12 06:12:26,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:12:26,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:12:26,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:12:26,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:12:26,576 INFO L87 Difference]: Start difference. First operand 1417 states and 2022 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2020-11-12 06:12:26,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:12:26,703 INFO L93 Difference]: Finished difference Result 2417 states and 3607 transitions. [2020-11-12 06:12:26,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 06:12:26,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 50 [2020-11-12 06:12:26,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:12:26,712 INFO L225 Difference]: With dead ends: 2417 [2020-11-12 06:12:26,712 INFO L226 Difference]: Without dead ends: 1417 [2020-11-12 06:12:26,713 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 [2020-11-12 06:12:26,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2020-11-12 06:12:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1417. [2020-11-12 06:12:26,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1337 states have (on average 1.5108451757666417) internal successors, (2020), 1416 states have internal predecessors, (2020), 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) [2020-11-12 06:12:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 2020 transitions. [2020-11-12 06:12:26,750 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 2020 transitions. Word has length 50 [2020-11-12 06:12:26,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:12:26,750 INFO L481 AbstractCegarLoop]: Abstraction has 1417 states and 2020 transitions. [2020-11-12 06:12:26,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2020-11-12 06:12:26,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 2020 transitions. [2020-11-12 06:12:26,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-12 06:12:26,754 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:12:26,754 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] [2020-11-12 06:12:26,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 06:12:26,754 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:12:26,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:12:26,755 INFO L82 PathProgramCache]: Analyzing trace with hash -811265535, now seen corresponding path program 2 times [2020-11-12 06:12:26,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:12:26,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948051426] [2020-11-12 06:12:26,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:12:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:12:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:12:26,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948051426] [2020-11-12 06:12:26,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:12:26,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 06:12:26,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398327700] [2020-11-12 06:12:26,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 06:12:26,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:12:26,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 06:12:26,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 06:12:26,880 INFO L87 Difference]: Start difference. First operand 1417 states and 2020 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2020-11-12 06:12:27,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:12:27,012 INFO L93 Difference]: Finished difference Result 1711 states and 2387 transitions. [2020-11-12 06:12:27,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:12:27,013 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 50 [2020-11-12 06:12:27,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:12:27,021 INFO L225 Difference]: With dead ends: 1711 [2020-11-12 06:12:27,021 INFO L226 Difference]: Without dead ends: 1389 [2020-11-12 06:12:27,022 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 [2020-11-12 06:12:27,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-11-12 06:12:27,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1389. [2020-11-12 06:12:27,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 1311 states have (on average 1.5064836003051105) internal successors, (1975), 1388 states have internal predecessors, (1975), 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) [2020-11-12 06:12:27,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1975 transitions. [2020-11-12 06:12:27,066 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1975 transitions. Word has length 50 [2020-11-12 06:12:27,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:12:27,066 INFO L481 AbstractCegarLoop]: Abstraction has 1389 states and 1975 transitions. [2020-11-12 06:12:27,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2020-11-12 06:12:27,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1975 transitions. [2020-11-12 06:12:27,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 06:12:27,070 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:12:27,071 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] [2020-11-12 06:12:27,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 06:12:27,071 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:12:27,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:12:27,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1203143900, now seen corresponding path program 1 times [2020-11-12 06:12:27,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:12:27,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848863595] [2020-11-12 06:12:27,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:12:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:12:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:12:27,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848863595] [2020-11-12 06:12:27,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:12:27,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:12:27,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640731461] [2020-11-12 06:12:27,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:12:27,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:12:27,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:12:27,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:12:27,236 INFO L87 Difference]: Start difference. First operand 1389 states and 1975 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:12:27,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:12:27,428 INFO L93 Difference]: Finished difference Result 1506 states and 2078 transitions. [2020-11-12 06:12:27,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 06:12:27,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-12 06:12:27,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:12:27,435 INFO L225 Difference]: With dead ends: 1506 [2020-11-12 06:12:27,435 INFO L226 Difference]: Without dead ends: 1173 [2020-11-12 06:12:27,436 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-12 06:12:27,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2020-11-12 06:12:27,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2020-11-12 06:12:27,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1110 states have (on average 1.481981981981982) internal successors, (1645), 1172 states have internal predecessors, (1645), 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) [2020-11-12 06:12:27,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1645 transitions. [2020-11-12 06:12:27,473 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1645 transitions. Word has length 51 [2020-11-12 06:12:27,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:12:27,474 INFO L481 AbstractCegarLoop]: Abstraction has 1173 states and 1645 transitions. [2020-11-12 06:12:27,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:12:27,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1645 transitions. [2020-11-12 06:12:27,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-12 06:12:27,482 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:12:27,482 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] [2020-11-12 06:12:27,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 06:12:27,482 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:12:27,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:12:27,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1482004455, now seen corresponding path program 1 times [2020-11-12 06:12:27,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:12:27,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931842682] [2020-11-12 06:12:27,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:12:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:12:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:12:27,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931842682] [2020-11-12 06:12:27,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:12:27,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 06:12:27,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430381117] [2020-11-12 06:12:27,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 06:12:27,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:12:27,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 06:12:27,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 06:12:27,702 INFO L87 Difference]: Start difference. First operand 1173 states and 1645 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:12:27,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:12:27,900 INFO L93 Difference]: Finished difference Result 957 states and 1288 transitions. [2020-11-12 06:12:27,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 06:12:27,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2020-11-12 06:12:27,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:12:27,908 INFO L225 Difference]: With dead ends: 957 [2020-11-12 06:12:27,908 INFO L226 Difference]: Without dead ends: 642 [2020-11-12 06:12:27,909 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 [2020-11-12 06:12:27,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-12 06:12:27,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2020-11-12 06:12:27,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 615 states have (on average 1.416260162601626) internal successors, (871), 641 states have internal predecessors, (871), 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) [2020-11-12 06:12:27,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 871 transitions. [2020-11-12 06:12:27,927 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 871 transitions. Word has length 52 [2020-11-12 06:12:27,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:12:27,928 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 871 transitions. [2020-11-12 06:12:27,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:12:27,928 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 871 transitions. [2020-11-12 06:12:27,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-12 06:12:27,930 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:12:27,930 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, 1] [2020-11-12 06:12:27,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-12 06:12:27,930 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:12:27,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:12:27,931 INFO L82 PathProgramCache]: Analyzing trace with hash 357086726, now seen corresponding path program 1 times [2020-11-12 06:12:27,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:12:27,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236609452] [2020-11-12 06:12:27,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:12:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:12:28,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:12:28,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236609452] [2020-11-12 06:12:28,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:12:28,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:12:28,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691703958] [2020-11-12 06:12:28,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:12:28,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:12:28,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:12:28,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:12:28,074 INFO L87 Difference]: Start difference. First operand 642 states and 871 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2020-11-12 06:12:28,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:12:28,178 INFO L93 Difference]: Finished difference Result 1055 states and 1487 transitions. [2020-11-12 06:12:28,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 06:12:28,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2020-11-12 06:12:28,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:12:28,182 INFO L225 Difference]: With dead ends: 1055 [2020-11-12 06:12:28,182 INFO L226 Difference]: Without dead ends: 572 [2020-11-12 06:12:28,182 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 [2020-11-12 06:12:28,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-11-12 06:12:28,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2020-11-12 06:12:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 545 states have (on average 1.4275229357798165) internal successors, (778), 571 states have internal predecessors, (778), 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) [2020-11-12 06:12:28,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 778 transitions. [2020-11-12 06:12:28,198 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 778 transitions. Word has length 54 [2020-11-12 06:12:28,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:12:28,198 INFO L481 AbstractCegarLoop]: Abstraction has 572 states and 778 transitions. [2020-11-12 06:12:28,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2020-11-12 06:12:28,198 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 778 transitions. [2020-11-12 06:12:28,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-12 06:12:28,200 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:12:28,200 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, 1] [2020-11-12 06:12:28,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-12 06:12:28,200 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:12:28,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:12:28,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1656303588, now seen corresponding path program 2 times [2020-11-12 06:12:28,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:12:28,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504002448] [2020-11-12 06:12:28,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:12:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:12:28,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:12:28,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504002448] [2020-11-12 06:12:28,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:12:28,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 06:12:28,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764691759] [2020-11-12 06:12:28,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 06:12:28,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:12:28,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 06:12:28,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:12:28,306 INFO L87 Difference]: Start difference. First operand 572 states and 778 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2020-11-12 06:12:28,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:12:28,405 INFO L93 Difference]: Finished difference Result 464 states and 670 transitions. [2020-11-12 06:12:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 06:12:28,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2020-11-12 06:12:28,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:12:28,406 INFO L225 Difference]: With dead ends: 464 [2020-11-12 06:12:28,406 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 06:12:28,407 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 [2020-11-12 06:12:28,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 06:12:28,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 06:12:28,408 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) [2020-11-12 06:12:28,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 06:12:28,408 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-11-12 06:12:28,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:12:28,408 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 06:12:28,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2020-11-12 06:12:28,409 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 06:12:28,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 06:12:28,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-12 06:12:28,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:12:28 BasicIcfg [2020-11-12 06:12:28,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 06:12:28,416 INFO L168 Benchmark]: Toolchain (without parser) took 8693.69 ms. Allocated memory was 302.0 MB in the beginning and 597.7 MB in the end (delta: 295.7 MB). Free memory was 277.5 MB in the beginning and 398.9 MB in the end (delta: -121.4 MB). Peak memory consumption was 175.6 MB. Max. memory is 16.0 GB. [2020-11-12 06:12:28,417 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 06:12:28,418 INFO L168 Benchmark]: CACSL2BoogieTranslator took 768.30 ms. Allocated memory is still 302.0 MB. Free memory was 276.8 MB in the beginning and 246.2 MB in the end (delta: 30.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-12 06:12:28,419 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.49 ms. Allocated memory is still 302.0 MB. Free memory was 246.0 MB in the beginning and 244.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 06:12:28,425 INFO L168 Benchmark]: Boogie Preprocessor took 30.69 ms. Allocated memory is still 302.0 MB. Free memory was 244.1 MB in the beginning and 242.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 06:12:28,426 INFO L168 Benchmark]: RCFGBuilder took 670.66 ms. Allocated memory is still 302.0 MB. Free memory was 242.6 MB in the beginning and 264.7 MB in the end (delta: -22.1 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.0 GB. [2020-11-12 06:12:28,430 INFO L168 Benchmark]: TraceAbstraction took 7152.52 ms. Allocated memory was 302.0 MB in the beginning and 597.7 MB in the end (delta: 295.7 MB). Free memory was 264.7 MB in the beginning and 398.9 MB in the end (delta: -134.3 MB). Peak memory consumption was 162.5 MB. Max. memory is 16.0 GB. [2020-11-12 06:12:28,436 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 768.30 ms. Allocated memory is still 302.0 MB. Free memory was 276.8 MB in the beginning and 246.2 MB in the end (delta: 30.6 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 53.49 ms. Allocated memory is still 302.0 MB. Free memory was 246.0 MB in the beginning and 244.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.69 ms. Allocated memory is still 302.0 MB. Free memory was 244.1 MB in the beginning and 242.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 670.66 ms. Allocated memory is still 302.0 MB. Free memory was 242.6 MB in the beginning and 264.7 MB in the end (delta: -22.1 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7152.52 ms. Allocated memory was 302.0 MB in the beginning and 597.7 MB in the end (delta: 295.7 MB). Free memory was 264.7 MB in the beginning and 398.9 MB in the end (delta: -134.3 MB). Peak memory consumption was 162.5 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 736 SDtfs, 890 SDslu, 2674 SDs, 0 SdLazy, 298 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9848occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 492 NumberOfCodeBlocks, 492 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 482 ConstructedInterpolants, 0 QuantifiedInterpolants, 62254 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...