/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 18:03:19,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 18:03:19,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 18:03:19,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 18:03:19,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 18:03:19,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 18:03:19,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 18:03:19,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 18:03:19,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 18:03:19,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 18:03:19,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 18:03:19,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 18:03:19,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 18:03:19,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 18:03:19,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 18:03:19,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 18:03:19,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 18:03:19,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 18:03:19,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 18:03:19,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 18:03:19,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 18:03:19,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 18:03:19,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 18:03:19,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 18:03:19,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 18:03:19,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 18:03:19,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 18:03:19,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 18:03:19,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 18:03:19,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 18:03:19,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 18:03:19,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 18:03:19,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 18:03:19,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 18:03:19,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 18:03:19,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 18:03:19,243 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2020-11-11 18:03:19,299 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 18:03:19,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 18:03:19,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 18:03:19,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 18:03:19,305 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 18:03:19,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 18:03:19,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 18:03:19,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 18:03:19,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 18:03:19,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 18:03:19,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 18:03:19,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 18:03:19,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 18:03:19,308 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 18:03:19,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 18:03:19,308 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 18:03:19,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 18:03:19,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 18:03:19,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 18:03:19,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 18:03:19,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 18:03:19,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:03:19,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 18:03:19,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 18:03:19,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 18:03:19,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 18:03:19,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 18:03:19,311 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-11 18:03:19,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 18:03:19,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 18:03:19,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 18:03:19,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 18:03:19,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 18:03:19,738 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 18:03:19,739 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 18:03:19,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-11-11 18:03:19,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/250e0ac2b/3c28e43339c54d3093f18fda538b2122/FLAGb2e6037ad [2020-11-11 18:03:20,714 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 18:03:20,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-11-11 18:03:20,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/250e0ac2b/3c28e43339c54d3093f18fda538b2122/FLAGb2e6037ad [2020-11-11 18:03:20,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/250e0ac2b/3c28e43339c54d3093f18fda538b2122 [2020-11-11 18:03:20,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 18:03:20,945 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 18:03:20,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 18:03:20,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 18:03:20,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 18:03:20,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:03:20" (1/1) ... [2020-11-11 18:03:20,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322c8f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:03:20, skipping insertion in model container [2020-11-11 18:03:20,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:03:20" (1/1) ... [2020-11-11 18:03:20,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 18:03:21,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 18:03:21,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:03:21,494 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 18:03:21,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:03:21,665 INFO L208 MainTranslator]: Completed translation [2020-11-11 18:03:21,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:03:21 WrapperNode [2020-11-11 18:03:21,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 18:03:21,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 18:03:21,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 18:03:21,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 18:03:21,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:03:21" (1/1) ... [2020-11-11 18:03:21,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:03:21" (1/1) ... [2020-11-11 18:03:21,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 18:03:21,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 18:03:21,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 18:03:21,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 18:03:21,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:03:21" (1/1) ... [2020-11-11 18:03:21,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:03:21" (1/1) ... [2020-11-11 18:03:21,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:03:21" (1/1) ... [2020-11-11 18:03:21,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:03:21" (1/1) ... [2020-11-11 18:03:21,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:03:21" (1/1) ... [2020-11-11 18:03:21,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:03:21" (1/1) ... [2020-11-11 18:03:21,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:03:21" (1/1) ... [2020-11-11 18:03:21,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 18:03:21,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 18:03:21,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 18:03:21,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 18:03:21,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:03:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:03:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 18:03:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 18:03:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 18:03:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 18:03:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 18:03:21,863 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 18:03:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 18:03:21,863 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 18:03:21,864 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 18:03:21,865 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 18:03:21,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 18:03:21,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 18:03:21,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 18:03:21,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 18:03:21,867 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 18:03:22,482 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 18:03:22,482 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 18:03:22,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:03:22 BoogieIcfgContainer [2020-11-11 18:03:22,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 18:03:22,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 18:03:22,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 18:03:22,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 18:03:22,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:03:20" (1/3) ... [2020-11-11 18:03:22,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6680121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:03:22, skipping insertion in model container [2020-11-11 18:03:22,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:03:21" (2/3) ... [2020-11-11 18:03:22,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6680121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:03:22, skipping insertion in model container [2020-11-11 18:03:22,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:03:22" (3/3) ... [2020-11-11 18:03:22,497 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.oepc.i [2020-11-11 18:03:22,516 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 18:03:22,516 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 18:03:22,520 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 18:03:22,521 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 18:03:22,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,565 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,565 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,565 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,565 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,565 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,566 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,566 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,566 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,567 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,567 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,568 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,568 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,568 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,568 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,568 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,569 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,570 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,570 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,570 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,570 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,571 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,571 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,571 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,571 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,571 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,572 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,572 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,572 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,572 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,575 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,575 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,576 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,576 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,582 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,582 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,583 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,585 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,585 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,586 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:03:22,588 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 18:03:22,602 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 18:03:22,626 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 18:03:22,627 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 18:03:22,627 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 18:03:22,627 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 18:03:22,627 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 18:03:22,627 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 18:03:22,627 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 18:03:22,627 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 18:03:22,640 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-11-11 18:03:23,500 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:23,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:23,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-11 18:03:23,598 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:03:23,599 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:03:23,600 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:03:23,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:03:23,607 INFO L82 PathProgramCache]: Analyzing trace with hash -578983952, now seen corresponding path program 1 times [2020-11-11 18:03:23,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:03:23,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258295866] [2020-11-11 18:03:23,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:03:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:03:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:03:24,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258295866] [2020-11-11 18:03:24,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:03:24,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:03:24,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065361680] [2020-11-11 18:03:24,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:03:24,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:03:24,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:03:24,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:03:24,244 INFO L87 Difference]: Start difference. First operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:24,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:03:24,677 INFO L93 Difference]: Finished difference Result 12199 states and 42463 transitions. [2020-11-11 18:03:24,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:03:24,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2020-11-11 18:03:24,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:03:24,742 INFO L225 Difference]: With dead ends: 12199 [2020-11-11 18:03:24,742 INFO L226 Difference]: Without dead ends: 4604 [2020-11-11 18:03:24,744 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:03:24,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4604 states. [2020-11-11 18:03:25,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4604 to 4604. [2020-11-11 18:03:25,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4604 states, 4603 states have (on average 3.4158157723223983) internal successors, (15723), 4603 states have internal predecessors, (15723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:25,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4604 states to 4604 states and 15723 transitions. [2020-11-11 18:03:25,185 INFO L78 Accepts]: Start accepts. Automaton has 4604 states and 15723 transitions. Word has length 41 [2020-11-11 18:03:25,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:03:25,186 INFO L481 AbstractCegarLoop]: Abstraction has 4604 states and 15723 transitions. [2020-11-11 18:03:25,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:25,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states and 15723 transitions. [2020-11-11 18:03:25,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-11 18:03:25,204 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:03:25,205 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:03:25,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 18:03:25,209 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:03:25,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:03:25,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1808394825, now seen corresponding path program 1 times [2020-11-11 18:03:25,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:03:25,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253746108] [2020-11-11 18:03:25,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:03:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:03:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:03:25,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253746108] [2020-11-11 18:03:25,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:03:25,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:03:25,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503540906] [2020-11-11 18:03:25,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:03:25,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:03:25,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:03:25,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:03:25,460 INFO L87 Difference]: Start difference. First operand 4604 states and 15723 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:25,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:03:25,700 INFO L93 Difference]: Finished difference Result 5472 states and 18504 transitions. [2020-11-11 18:03:25,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:03:25,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2020-11-11 18:03:25,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:03:25,740 INFO L225 Difference]: With dead ends: 5472 [2020-11-11 18:03:25,741 INFO L226 Difference]: Without dead ends: 4492 [2020-11-11 18:03:25,743 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:03:25,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4492 states. [2020-11-11 18:03:25,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4492 to 4492. [2020-11-11 18:03:25,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 4491 states have (on average 3.404809619238477) internal successors, (15291), 4491 states have internal predecessors, (15291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:25,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 15291 transitions. [2020-11-11 18:03:25,943 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 15291 transitions. Word has length 43 [2020-11-11 18:03:25,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:03:25,944 INFO L481 AbstractCegarLoop]: Abstraction has 4492 states and 15291 transitions. [2020-11-11 18:03:25,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:25,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 15291 transitions. [2020-11-11 18:03:25,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-11 18:03:25,958 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:03:25,958 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] [2020-11-11 18:03:25,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 18:03:25,958 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:03:25,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:03:25,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1762653605, now seen corresponding path program 1 times [2020-11-11 18:03:25,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:03:25,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190393748] [2020-11-11 18:03:25,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:03:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:03:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:03:26,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190393748] [2020-11-11 18:03:26,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:03:26,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:03:26,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283467453] [2020-11-11 18:03:26,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:03:26,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:03:26,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:03:26,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:03:26,236 INFO L87 Difference]: Start difference. First operand 4492 states and 15291 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2020-11-11 18:03:26,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:03:26,443 INFO L93 Difference]: Finished difference Result 7568 states and 25238 transitions. [2020-11-11 18:03:26,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:03:26,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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 [2020-11-11 18:03:26,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:03:26,487 INFO L225 Difference]: With dead ends: 7568 [2020-11-11 18:03:26,488 INFO L226 Difference]: Without dead ends: 5164 [2020-11-11 18:03:26,488 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:03:26,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5164 states. [2020-11-11 18:03:26,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5164 to 4044. [2020-11-11 18:03:26,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4044 states, 4043 states have (on average 3.3168439277764037) internal successors, (13410), 4043 states have internal predecessors, (13410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:26,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4044 states to 4044 states and 13410 transitions. [2020-11-11 18:03:26,691 INFO L78 Accepts]: Start accepts. Automaton has 4044 states and 13410 transitions. Word has length 44 [2020-11-11 18:03:26,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:03:26,691 INFO L481 AbstractCegarLoop]: Abstraction has 4044 states and 13410 transitions. [2020-11-11 18:03:26,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2020-11-11 18:03:26,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4044 states and 13410 transitions. [2020-11-11 18:03:26,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-11 18:03:26,701 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:03:26,701 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:03:26,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 18:03:26,702 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:03:26,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:03:26,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1650393558, now seen corresponding path program 1 times [2020-11-11 18:03:26,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:03:26,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026457963] [2020-11-11 18:03:26,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:03:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:03:26,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:03:26,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026457963] [2020-11-11 18:03:26,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:03:26,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:03:26,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031653289] [2020-11-11 18:03:26,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:03:26,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:03:26,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:03:26,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:03:26,938 INFO L87 Difference]: Start difference. First operand 4044 states and 13410 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:27,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:03:27,141 INFO L93 Difference]: Finished difference Result 4344 states and 14265 transitions. [2020-11-11 18:03:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:03:27,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2020-11-11 18:03:27,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:03:27,179 INFO L225 Difference]: With dead ends: 4344 [2020-11-11 18:03:27,180 INFO L226 Difference]: Without dead ends: 3644 [2020-11-11 18:03:27,180 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:03:27,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2020-11-11 18:03:27,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3644. [2020-11-11 18:03:27,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 3643 states have (on average 3.2857534998627504) internal successors, (11970), 3643 states have internal predecessors, (11970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:27,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 11970 transitions. [2020-11-11 18:03:27,359 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 11970 transitions. Word has length 45 [2020-11-11 18:03:27,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:03:27,360 INFO L481 AbstractCegarLoop]: Abstraction has 3644 states and 11970 transitions. [2020-11-11 18:03:27,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:27,360 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 11970 transitions. [2020-11-11 18:03:27,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-11 18:03:27,372 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:03:27,372 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:03:27,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 18:03:27,372 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:03:27,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:03:27,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1010838069, now seen corresponding path program 1 times [2020-11-11 18:03:27,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:03:27,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883989013] [2020-11-11 18:03:27,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:03:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:03:27,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:03:27,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883989013] [2020-11-11 18:03:27,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:03:27,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:03:27,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881387741] [2020-11-11 18:03:27,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:03:27,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:03:27,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:03:27,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:03:27,544 INFO L87 Difference]: Start difference. First operand 3644 states and 11970 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:27,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:03:27,771 INFO L93 Difference]: Finished difference Result 4104 states and 13398 transitions. [2020-11-11 18:03:27,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:03:27,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2020-11-11 18:03:27,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:03:27,790 INFO L225 Difference]: With dead ends: 4104 [2020-11-11 18:03:27,791 INFO L226 Difference]: Without dead ends: 3604 [2020-11-11 18:03:27,791 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:03:27,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2020-11-11 18:03:27,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 3604. [2020-11-11 18:03:27,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3604 states, 3603 states have (on average 3.280044407438246) internal successors, (11818), 3603 states have internal predecessors, (11818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:27,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3604 states to 3604 states and 11818 transitions. [2020-11-11 18:03:27,993 INFO L78 Accepts]: Start accepts. Automaton has 3604 states and 11818 transitions. Word has length 47 [2020-11-11 18:03:27,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:03:27,996 INFO L481 AbstractCegarLoop]: Abstraction has 3604 states and 11818 transitions. [2020-11-11 18:03:27,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:27,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3604 states and 11818 transitions. [2020-11-11 18:03:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-11 18:03:28,008 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:03:28,008 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:03:28,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 18:03:28,009 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:03:28,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:03:28,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1880295013, now seen corresponding path program 1 times [2020-11-11 18:03:28,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:03:28,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139017905] [2020-11-11 18:03:28,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:03:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:03:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:03:28,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139017905] [2020-11-11 18:03:28,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:03:28,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:03:28,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248271869] [2020-11-11 18:03:28,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:03:28,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:03:28,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:03:28,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:03:28,216 INFO L87 Difference]: Start difference. First operand 3604 states and 11818 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:28,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:03:28,385 INFO L93 Difference]: Finished difference Result 5164 states and 16732 transitions. [2020-11-11 18:03:28,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 18:03:28,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-11-11 18:03:28,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:03:28,398 INFO L225 Difference]: With dead ends: 5164 [2020-11-11 18:03:28,399 INFO L226 Difference]: Without dead ends: 2809 [2020-11-11 18:03:28,399 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:03:28,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2020-11-11 18:03:28,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 2809. [2020-11-11 18:03:28,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2809 states, 2808 states have (on average 3.242165242165242) internal successors, (9104), 2808 states have internal predecessors, (9104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:28,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 9104 transitions. [2020-11-11 18:03:28,514 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 9104 transitions. Word has length 48 [2020-11-11 18:03:28,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:03:28,515 INFO L481 AbstractCegarLoop]: Abstraction has 2809 states and 9104 transitions. [2020-11-11 18:03:28,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:28,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 9104 transitions. [2020-11-11 18:03:28,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-11 18:03:28,523 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:03:28,523 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:03:28,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 18:03:28,524 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:03:28,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:03:28,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1507471679, now seen corresponding path program 2 times [2020-11-11 18:03:28,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:03:28,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738918054] [2020-11-11 18:03:28,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:03:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:03:28,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:03:28,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738918054] [2020-11-11 18:03:28,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:03:28,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:03:28,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220135081] [2020-11-11 18:03:28,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:03:28,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:03:28,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:03:28,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:03:28,687 INFO L87 Difference]: Start difference. First operand 2809 states and 9104 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:29,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:03:29,027 INFO L93 Difference]: Finished difference Result 4889 states and 15372 transitions. [2020-11-11 18:03:29,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-11 18:03:29,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-11-11 18:03:29,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:03:29,039 INFO L225 Difference]: With dead ends: 4889 [2020-11-11 18:03:29,040 INFO L226 Difference]: Without dead ends: 2741 [2020-11-11 18:03:29,040 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-11-11 18:03:29,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2020-11-11 18:03:29,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 2101. [2020-11-11 18:03:29,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2101 states, 2100 states have (on average 3.1204761904761904) internal successors, (6553), 2100 states have internal predecessors, (6553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:29,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 6553 transitions. [2020-11-11 18:03:29,126 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 6553 transitions. Word has length 48 [2020-11-11 18:03:29,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:03:29,127 INFO L481 AbstractCegarLoop]: Abstraction has 2101 states and 6553 transitions. [2020-11-11 18:03:29,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:29,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 6553 transitions. [2020-11-11 18:03:29,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-11 18:03:29,133 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:03:29,133 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:03:29,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 18:03:29,133 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:03:29,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:03:29,134 INFO L82 PathProgramCache]: Analyzing trace with hash -2067721465, now seen corresponding path program 1 times [2020-11-11 18:03:29,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:03:29,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462861814] [2020-11-11 18:03:29,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:03:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:03:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:03:29,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462861814] [2020-11-11 18:03:29,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:03:29,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:03:29,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678608107] [2020-11-11 18:03:29,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:03:29,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:03:29,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:03:29,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:03:29,287 INFO L87 Difference]: Start difference. First operand 2101 states and 6553 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:29,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:03:29,429 INFO L93 Difference]: Finished difference Result 2733 states and 8451 transitions. [2020-11-11 18:03:29,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 18:03:29,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-11-11 18:03:29,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:03:29,435 INFO L225 Difference]: With dead ends: 2733 [2020-11-11 18:03:29,436 INFO L226 Difference]: Without dead ends: 1311 [2020-11-11 18:03:29,436 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:03:29,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2020-11-11 18:03:29,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1311. [2020-11-11 18:03:29,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 1310 states have (on average 3.045038167938931) internal successors, (3989), 1310 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:29,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 3989 transitions. [2020-11-11 18:03:29,481 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 3989 transitions. Word has length 48 [2020-11-11 18:03:29,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:03:29,484 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 3989 transitions. [2020-11-11 18:03:29,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:29,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 3989 transitions. [2020-11-11 18:03:29,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-11 18:03:29,488 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:03:29,488 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:03:29,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 18:03:29,488 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:03:29,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:03:29,489 INFO L82 PathProgramCache]: Analyzing trace with hash 608113037, now seen corresponding path program 1 times [2020-11-11 18:03:29,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:03:29,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267008080] [2020-11-11 18:03:29,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:03:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:03:29,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:03:29,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267008080] [2020-11-11 18:03:29,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:03:29,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:03:29,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825900577] [2020-11-11 18:03:29,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:03:29,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:03:29,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:03:29,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:03:29,637 INFO L87 Difference]: Start difference. First operand 1311 states and 3989 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:29,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:03:29,786 INFO L93 Difference]: Finished difference Result 1502 states and 4502 transitions. [2020-11-11 18:03:29,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:03:29,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2020-11-11 18:03:29,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:03:29,791 INFO L225 Difference]: With dead ends: 1502 [2020-11-11 18:03:29,792 INFO L226 Difference]: Without dead ends: 1166 [2020-11-11 18:03:29,792 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:03:29,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2020-11-11 18:03:29,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2020-11-11 18:03:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 3.0051502145922746) internal successors, (3501), 1165 states have internal predecessors, (3501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:29,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 3501 transitions. [2020-11-11 18:03:29,829 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 3501 transitions. Word has length 49 [2020-11-11 18:03:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:03:29,829 INFO L481 AbstractCegarLoop]: Abstraction has 1166 states and 3501 transitions. [2020-11-11 18:03:29,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:29,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 3501 transitions. [2020-11-11 18:03:29,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-11 18:03:29,833 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:03:29,833 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] [2020-11-11 18:03:29,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-11 18:03:29,833 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:03:29,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:03:29,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1984353874, now seen corresponding path program 1 times [2020-11-11 18:03:29,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:03:29,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848412002] [2020-11-11 18:03:29,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:03:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:03:29,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:03:29,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848412002] [2020-11-11 18:03:29,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:03:29,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:03:29,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193789075] [2020-11-11 18:03:29,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:03:29,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:03:29,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:03:29,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:03:29,947 INFO L87 Difference]: Start difference. First operand 1166 states and 3501 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) [2020-11-11 18:03:30,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:03:30,130 INFO L93 Difference]: Finished difference Result 998 states and 2873 transitions. [2020-11-11 18:03:30,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:03:30,131 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 [2020-11-11 18:03:30,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:03:30,134 INFO L225 Difference]: With dead ends: 998 [2020-11-11 18:03:30,134 INFO L226 Difference]: Without dead ends: 746 [2020-11-11 18:03:30,134 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-11 18:03:30,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2020-11-11 18:03:30,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2020-11-11 18:03:30,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 745 states have (on average 2.829530201342282) internal successors, (2108), 745 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:30,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 2108 transitions. [2020-11-11 18:03:30,157 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 2108 transitions. Word has length 50 [2020-11-11 18:03:30,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:03:30,157 INFO L481 AbstractCegarLoop]: Abstraction has 746 states and 2108 transitions. [2020-11-11 18:03:30,158 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) [2020-11-11 18:03:30,158 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 2108 transitions. [2020-11-11 18:03:30,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-11 18:03:30,160 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:03:30,160 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:03:30,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-11 18:03:30,161 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:03:30,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:03:30,161 INFO L82 PathProgramCache]: Analyzing trace with hash -126840041, now seen corresponding path program 1 times [2020-11-11 18:03:30,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:03:30,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300589363] [2020-11-11 18:03:30,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:03:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:03:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:03:30,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300589363] [2020-11-11 18:03:30,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:03:30,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-11 18:03:30,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576026478] [2020-11-11 18:03:30,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-11 18:03:30,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:03:30,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-11 18:03:30,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-11 18:03:30,303 INFO L87 Difference]: Start difference. First operand 746 states and 2108 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:30,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:03:30,428 INFO L93 Difference]: Finished difference Result 359 states and 935 transitions. [2020-11-11 18:03:30,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-11 18:03:30,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-11 18:03:30,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:03:30,429 INFO L225 Difference]: With dead ends: 359 [2020-11-11 18:03:30,429 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 18:03:30,429 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-11 18:03:30,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 18:03:30,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 18:03:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:30,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 18:03:30,430 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2020-11-11 18:03:30,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:03:30,431 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 18:03:30,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:03:30,431 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 18:03:30,431 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 18:03:30,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-11 18:03:30,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:03:30 BasicIcfg [2020-11-11 18:03:30,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 18:03:30,440 INFO L168 Benchmark]: Toolchain (without parser) took 9498.91 ms. Allocated memory was 302.0 MB in the beginning and 633.3 MB in the end (delta: 331.4 MB). Free memory was 277.3 MB in the beginning and 493.2 MB in the end (delta: -215.9 MB). Peak memory consumption was 117.9 MB. Max. memory is 16.0 GB. [2020-11-11 18:03:30,441 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory was 271.8 MB in the beginning and 271.7 MB in the end (delta: 78.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:03:30,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.11 ms. Allocated memory is still 302.0 MB. Free memory was 276.6 MB in the beginning and 245.8 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-11 18:03:30,448 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.88 ms. Allocated memory is still 302.0 MB. Free memory was 245.8 MB in the beginning and 243.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:03:30,449 INFO L168 Benchmark]: Boogie Preprocessor took 40.29 ms. Allocated memory is still 302.0 MB. Free memory was 243.9 MB in the beginning and 284.9 MB in the end (delta: -41.1 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. [2020-11-11 18:03:30,450 INFO L168 Benchmark]: RCFGBuilder took 724.10 ms. Allocated memory is still 302.0 MB. Free memory was 284.9 MB in the beginning and 261.6 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:03:30,457 INFO L168 Benchmark]: TraceAbstraction took 7948.38 ms. Allocated memory was 302.0 MB in the beginning and 633.3 MB in the end (delta: 331.4 MB). Free memory was 260.5 MB in the beginning and 493.2 MB in the end (delta: -232.7 MB). Peak memory consumption was 100.8 MB. Max. memory is 16.0 GB. [2020-11-11 18:03:30,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory was 271.8 MB in the beginning and 271.7 MB in the end (delta: 78.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 716.11 ms. Allocated memory is still 302.0 MB. Free memory was 276.6 MB in the beginning and 245.8 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 53.88 ms. Allocated memory is still 302.0 MB. Free memory was 245.8 MB in the beginning and 243.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 40.29 ms. Allocated memory is still 302.0 MB. Free memory was 243.9 MB in the beginning and 284.9 MB in the end (delta: -41.1 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. * RCFGBuilder took 724.10 ms. Allocated memory is still 302.0 MB. Free memory was 284.9 MB in the beginning and 261.6 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7948.38 ms. Allocated memory was 302.0 MB in the beginning and 633.3 MB in the end (delta: 331.4 MB). Free memory was 260.5 MB in the beginning and 493.2 MB in the end (delta: -232.7 MB). Peak memory consumption was 100.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.8s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 1086 SDtfs, 1264 SDslu, 3384 SDs, 0 SdLazy, 349 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9847occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 1760 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 514 NumberOfCodeBlocks, 514 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 503 ConstructedInterpolants, 0 QuantifiedInterpolants, 63547 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...