/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:45:53,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:45:53,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:45:53,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:45:53,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:45:53,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:45:53,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:45:53,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:45:53,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:45:53,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:45:53,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:45:53,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:45:53,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:45:53,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:45:53,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:45:53,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:45:53,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:45:53,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:45:53,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:45:53,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:45:53,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:45:53,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:45:53,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:45:53,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:45:53,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 12:45:53,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:45:53,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:45:53,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:45:53,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:45:53,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:45:53,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:45:53,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:45:53,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:45:53,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:45:53,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:45:53,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:45:53,189 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:45:53,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:45:53,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:45:53,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:45:53,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:45:53,223 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:45:53,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:45:53,224 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:45:53,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:45:53,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:45:53,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:45:53,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:45:53,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:45:53,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:45:53,226 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:45:53,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:45:53,227 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:45:53,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:45:53,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:45:53,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:45:53,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:45:53,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:45:53,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:45:53,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:45:53,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:45:53,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:45:53,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:45:53,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:45:53,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:45:53,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:45:53,233 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:45:53,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:45:53,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:45:53,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:45:53,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:45:53,706 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:45:53,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-11-09 12:45:53,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1828164b/93896fc82f5a4a4a9259a2c6eb7124d4/FLAGe87a6ba48 [2020-11-09 12:45:54,549 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:45:54,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2020-11-09 12:45:54,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1828164b/93896fc82f5a4a4a9259a2c6eb7124d4/FLAGe87a6ba48 [2020-11-09 12:45:54,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1828164b/93896fc82f5a4a4a9259a2c6eb7124d4 [2020-11-09 12:45:54,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:45:54,743 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:45:54,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:45:54,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:45:54,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:45:54,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:45:54" (1/1) ... [2020-11-09 12:45:54,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1272ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:54, skipping insertion in model container [2020-11-09 12:45:54,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:45:54" (1/1) ... [2020-11-09 12:45:54,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:45:54,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:45:55,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:45:55,385 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:45:55,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:45:55,640 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:45:55,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:55 WrapperNode [2020-11-09 12:45:55,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:45:55,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:45:55,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:45:55,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:45:55,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:55" (1/1) ... [2020-11-09 12:45:55,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:55" (1/1) ... [2020-11-09 12:45:55,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:45:55,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:45:55,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:45:55,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:45:55,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:55" (1/1) ... [2020-11-09 12:45:55,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:55" (1/1) ... [2020-11-09 12:45:55,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:55" (1/1) ... [2020-11-09 12:45:55,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:55" (1/1) ... [2020-11-09 12:45:55,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:55" (1/1) ... [2020-11-09 12:45:55,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:55" (1/1) ... [2020-11-09 12:45:55,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:55" (1/1) ... [2020-11-09 12:45:55,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:45:55,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:45:55,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:45:55,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:45:55,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:45:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:45:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:45:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:45:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:45:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 12:45:55,833 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 12:45:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 12:45:55,833 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 12:45:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 12:45:55,833 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 12:45:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:45:55,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:45:55,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:45:55,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:45:55,836 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:45:56,319 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:45:56,319 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 12:45:56,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:45:56 BoogieIcfgContainer [2020-11-09 12:45:56,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:45:56,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:45:56,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:45:56,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:45:56,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:45:54" (1/3) ... [2020-11-09 12:45:56,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f868daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:45:56, skipping insertion in model container [2020-11-09 12:45:56,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:45:55" (2/3) ... [2020-11-09 12:45:56,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f868daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:45:56, skipping insertion in model container [2020-11-09 12:45:56,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:45:56" (3/3) ... [2020-11-09 12:45:56,331 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2020-11-09 12:45:56,348 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:45:56,348 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:45:56,352 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:45:56,353 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:45:56,389 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,390 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,390 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,390 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,391 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,391 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,391 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,391 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,393 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,393 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,394 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,394 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,394 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,394 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,395 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,395 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,395 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,395 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,396 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,396 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,396 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,396 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,396 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,397 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,397 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,397 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,397 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,398 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,398 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,398 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,401 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,401 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,401 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,402 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,410 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,410 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,411 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,411 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,414 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,414 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,415 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,415 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:45:56,417 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:45:56,433 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 12:45:56,456 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:45:56,456 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:45:56,457 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:45:56,457 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:45:56,457 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:45:56,457 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:45:56,457 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:45:56,457 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:45:56,470 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:45:56,472 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 12:45:56,475 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 12:45:56,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 12:45:56,527 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 12:45:56,528 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:45:56,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 12:45:56,536 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 12:45:59,017 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-09 12:46:00,703 WARN L194 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 12:46:00,828 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:46:01,069 WARN L194 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 12:46:01,189 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:46:01,209 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-11-09 12:46:01,210 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-09 12:46:01,217 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-09 12:46:01,248 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-09 12:46:01,251 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-09 12:46:01,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 12:46:01,258 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:01,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:01,260 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:01,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:01,266 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-11-09 12:46:01,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:01,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983602293] [2020-11-09 12:46:01,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:01,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:01,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983602293] [2020-11-09 12:46:01,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:01,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:46:01,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883860972] [2020-11-09 12:46:01,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 12:46:01,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:01,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 12:46:01,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 12:46:01,642 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-09 12:46:01,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:01,688 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-09 12:46:01,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 12:46:01,690 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 12:46:01,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:01,708 INFO L225 Difference]: With dead ends: 362 [2020-11-09 12:46:01,709 INFO L226 Difference]: Without dead ends: 298 [2020-11-09 12:46:01,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 12:46:01,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-09 12:46:01,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-09 12:46:01,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-09 12:46:01,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-09 12:46:01,794 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-09 12:46:01,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:01,795 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-09 12:46:01,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 12:46:01,795 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-09 12:46:01,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:46:01,797 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:01,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:01,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:46:01,798 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:01,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:01,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-11-09 12:46:01,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:01,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658129010] [2020-11-09 12:46:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:01,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658129010] [2020-11-09 12:46:01,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:01,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:46:01,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163016936] [2020-11-09 12:46:01,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:46:01,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:01,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:46:01,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:46:01,979 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-11-09 12:46:02,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:02,090 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-09 12:46:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:46:02,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-09 12:46:02,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:02,095 INFO L225 Difference]: With dead ends: 330 [2020-11-09 12:46:02,096 INFO L226 Difference]: Without dead ends: 266 [2020-11-09 12:46:02,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:46:02,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-09 12:46:02,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-09 12:46:02,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-09 12:46:02,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-09 12:46:02,126 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-09 12:46:02,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:02,127 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-09 12:46:02,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:46:02,127 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-09 12:46:02,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 12:46:02,129 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:02,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:02,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:46:02,129 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:02,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:02,130 INFO L82 PathProgramCache]: Analyzing trace with hash 585999155, now seen corresponding path program 1 times [2020-11-09 12:46:02,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:02,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087131153] [2020-11-09 12:46:02,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:02,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087131153] [2020-11-09 12:46:02,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:02,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:46:02,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289926136] [2020-11-09 12:46:02,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:46:02,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:02,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:46:02,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:46:02,243 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-11-09 12:46:02,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:02,452 INFO L93 Difference]: Finished difference Result 344 states and 924 transitions. [2020-11-09 12:46:02,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 12:46:02,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-09 12:46:02,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:02,456 INFO L225 Difference]: With dead ends: 344 [2020-11-09 12:46:02,457 INFO L226 Difference]: Without dead ends: 170 [2020-11-09 12:46:02,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-09 12:46:02,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-11-09 12:46:02,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-11-09 12:46:02,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-11-09 12:46:02,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 428 transitions. [2020-11-09 12:46:02,480 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 428 transitions. Word has length 10 [2020-11-09 12:46:02,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:02,481 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 428 transitions. [2020-11-09 12:46:02,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:46:02,481 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 428 transitions. [2020-11-09 12:46:02,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:46:02,487 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:02,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:02,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:46:02,488 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:02,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:02,488 INFO L82 PathProgramCache]: Analyzing trace with hash 229025079, now seen corresponding path program 1 times [2020-11-09 12:46:02,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:02,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025666947] [2020-11-09 12:46:02,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:02,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025666947] [2020-11-09 12:46:02,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:02,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:46:02,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718326186] [2020-11-09 12:46:02,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:46:02,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:02,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:46:02,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:46:02,616 INFO L87 Difference]: Start difference. First operand 170 states and 428 transitions. Second operand 4 states. [2020-11-09 12:46:02,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:02,663 INFO L93 Difference]: Finished difference Result 182 states and 442 transitions. [2020-11-09 12:46:02,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:46:02,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-09 12:46:02,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:02,666 INFO L225 Difference]: With dead ends: 182 [2020-11-09 12:46:02,666 INFO L226 Difference]: Without dead ends: 158 [2020-11-09 12:46:02,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:46:02,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-09 12:46:02,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-11-09 12:46:02,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-11-09 12:46:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 390 transitions. [2020-11-09 12:46:02,675 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 390 transitions. Word has length 12 [2020-11-09 12:46:02,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:02,676 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 390 transitions. [2020-11-09 12:46:02,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:46:02,676 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 390 transitions. [2020-11-09 12:46:02,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:46:02,677 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:02,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:02,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:46:02,678 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:02,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:02,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1697755731, now seen corresponding path program 1 times [2020-11-09 12:46:02,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:02,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558668415] [2020-11-09 12:46:02,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:02,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558668415] [2020-11-09 12:46:02,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:02,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:46:02,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881733427] [2020-11-09 12:46:02,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:46:02,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:02,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:46:02,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:46:02,770 INFO L87 Difference]: Start difference. First operand 158 states and 390 transitions. Second operand 4 states. [2020-11-09 12:46:02,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:02,800 INFO L93 Difference]: Finished difference Result 164 states and 394 transitions. [2020-11-09 12:46:02,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:46:02,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-09 12:46:02,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:02,803 INFO L225 Difference]: With dead ends: 164 [2020-11-09 12:46:02,803 INFO L226 Difference]: Without dead ends: 152 [2020-11-09 12:46:02,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:46:02,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-11-09 12:46:02,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-11-09 12:46:02,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-09 12:46:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 374 transitions. [2020-11-09 12:46:02,811 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 374 transitions. Word has length 13 [2020-11-09 12:46:02,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:02,811 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 374 transitions. [2020-11-09 12:46:02,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:46:02,812 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 374 transitions. [2020-11-09 12:46:02,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:46:02,813 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:02,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:02,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:46:02,814 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:02,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:02,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1286592520, now seen corresponding path program 1 times [2020-11-09 12:46:02,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:02,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281259587] [2020-11-09 12:46:02,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:02,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:02,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281259587] [2020-11-09 12:46:02,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:02,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:46:02,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186679713] [2020-11-09 12:46:02,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:46:02,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:02,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:46:02,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:46:02,877 INFO L87 Difference]: Start difference. First operand 152 states and 374 transitions. Second operand 5 states. [2020-11-09 12:46:03,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:03,024 INFO L93 Difference]: Finished difference Result 239 states and 578 transitions. [2020-11-09 12:46:03,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-09 12:46:03,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-09 12:46:03,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:03,027 INFO L225 Difference]: With dead ends: 239 [2020-11-09 12:46:03,027 INFO L226 Difference]: Without dead ends: 140 [2020-11-09 12:46:03,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-09 12:46:03,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-09 12:46:03,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-11-09 12:46:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-09 12:46:03,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 334 transitions. [2020-11-09 12:46:03,033 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 334 transitions. Word has length 13 [2020-11-09 12:46:03,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:03,035 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 334 transitions. [2020-11-09 12:46:03,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:46:03,035 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 334 transitions. [2020-11-09 12:46:03,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:46:03,040 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:03,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:03,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:46:03,041 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:03,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:03,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1090700047, now seen corresponding path program 1 times [2020-11-09 12:46:03,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:03,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887634057] [2020-11-09 12:46:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:03,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:03,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887634057] [2020-11-09 12:46:03,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:03,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:46:03,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470021356] [2020-11-09 12:46:03,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:46:03,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:03,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:46:03,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:46:03,138 INFO L87 Difference]: Start difference. First operand 140 states and 334 transitions. Second operand 5 states. [2020-11-09 12:46:03,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:03,191 INFO L93 Difference]: Finished difference Result 155 states and 359 transitions. [2020-11-09 12:46:03,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:46:03,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-09 12:46:03,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:03,192 INFO L225 Difference]: With dead ends: 155 [2020-11-09 12:46:03,193 INFO L226 Difference]: Without dead ends: 116 [2020-11-09 12:46:03,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-09 12:46:03,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-09 12:46:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-11-09 12:46:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-09 12:46:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 276 transitions. [2020-11-09 12:46:03,199 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 276 transitions. Word has length 14 [2020-11-09 12:46:03,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:03,199 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 276 transitions. [2020-11-09 12:46:03,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:46:03,200 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 276 transitions. [2020-11-09 12:46:03,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:46:03,205 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:03,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:03,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 12:46:03,205 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:03,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:03,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1405608924, now seen corresponding path program 1 times [2020-11-09 12:46:03,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:03,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146940864] [2020-11-09 12:46:03,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:03,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:03,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146940864] [2020-11-09 12:46:03,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:03,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:46:03,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089174648] [2020-11-09 12:46:03,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:46:03,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:03,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:46:03,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:46:03,294 INFO L87 Difference]: Start difference. First operand 116 states and 276 transitions. Second operand 4 states. [2020-11-09 12:46:03,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:03,337 INFO L93 Difference]: Finished difference Result 137 states and 299 transitions. [2020-11-09 12:46:03,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:46:03,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-09 12:46:03,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:03,338 INFO L225 Difference]: With dead ends: 137 [2020-11-09 12:46:03,338 INFO L226 Difference]: Without dead ends: 97 [2020-11-09 12:46:03,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:46:03,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-09 12:46:03,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-09 12:46:03,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-09 12:46:03,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 207 transitions. [2020-11-09 12:46:03,343 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 207 transitions. Word has length 14 [2020-11-09 12:46:03,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:03,343 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 207 transitions. [2020-11-09 12:46:03,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:46:03,344 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 207 transitions. [2020-11-09 12:46:03,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:46:03,344 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:03,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:03,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 12:46:03,345 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:03,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:03,345 INFO L82 PathProgramCache]: Analyzing trace with hash -27259733, now seen corresponding path program 1 times [2020-11-09 12:46:03,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:03,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663512718] [2020-11-09 12:46:03,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:03,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:03,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663512718] [2020-11-09 12:46:03,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:03,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:46:03,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350165882] [2020-11-09 12:46:03,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:46:03,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:03,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:46:03,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:46:03,444 INFO L87 Difference]: Start difference. First operand 97 states and 207 transitions. Second operand 5 states. [2020-11-09 12:46:03,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:03,505 INFO L93 Difference]: Finished difference Result 95 states and 184 transitions. [2020-11-09 12:46:03,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:46:03,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-09 12:46:03,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:03,506 INFO L225 Difference]: With dead ends: 95 [2020-11-09 12:46:03,507 INFO L226 Difference]: Without dead ends: 70 [2020-11-09 12:46:03,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:46:03,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-09 12:46:03,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-11-09 12:46:03,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-09 12:46:03,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 128 transitions. [2020-11-09 12:46:03,511 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 128 transitions. Word has length 15 [2020-11-09 12:46:03,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:03,511 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 128 transitions. [2020-11-09 12:46:03,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:46:03,511 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 128 transitions. [2020-11-09 12:46:03,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 12:46:03,512 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:03,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:03,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 12:46:03,512 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:03,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:03,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1628487690, now seen corresponding path program 1 times [2020-11-09 12:46:03,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:03,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210054918] [2020-11-09 12:46:03,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:03,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210054918] [2020-11-09 12:46:03,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:03,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 12:46:03,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778508550] [2020-11-09 12:46:03,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:46:03,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:03,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:46:03,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:46:03,591 INFO L87 Difference]: Start difference. First operand 70 states and 128 transitions. Second operand 6 states. [2020-11-09 12:46:03,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:03,654 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-11-09 12:46:03,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:46:03,655 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-09 12:46:03,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:03,656 INFO L225 Difference]: With dead ends: 63 [2020-11-09 12:46:03,656 INFO L226 Difference]: Without dead ends: 55 [2020-11-09 12:46:03,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-09 12:46:03,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-09 12:46:03,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-09 12:46:03,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-09 12:46:03,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2020-11-09 12:46:03,659 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 16 [2020-11-09 12:46:03,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:03,660 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2020-11-09 12:46:03,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:46:03,661 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2020-11-09 12:46:03,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 12:46:03,661 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:03,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:03,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-09 12:46:03,662 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:03,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:03,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1397206146, now seen corresponding path program 1 times [2020-11-09 12:46:03,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:03,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922620687] [2020-11-09 12:46:03,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:03,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922620687] [2020-11-09 12:46:03,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:03,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:46:03,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858782941] [2020-11-09 12:46:03,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:46:03,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:03,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:46:03,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:46:03,741 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand 5 states. [2020-11-09 12:46:03,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:03,786 INFO L93 Difference]: Finished difference Result 65 states and 112 transitions. [2020-11-09 12:46:03,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:46:03,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 12:46:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:03,789 INFO L225 Difference]: With dead ends: 65 [2020-11-09 12:46:03,789 INFO L226 Difference]: Without dead ends: 36 [2020-11-09 12:46:03,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:46:03,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-09 12:46:03,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-09 12:46:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-09 12:46:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2020-11-09 12:46:03,792 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 57 transitions. Word has length 18 [2020-11-09 12:46:03,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:03,792 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 57 transitions. [2020-11-09 12:46:03,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:46:03,792 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 57 transitions. [2020-11-09 12:46:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 12:46:03,796 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:46:03,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:46:03,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-09 12:46:03,797 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:46:03,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:46:03,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1333208262, now seen corresponding path program 2 times [2020-11-09 12:46:03,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:46:03,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445065973] [2020-11-09 12:46:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:46:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:46:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:46:03,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445065973] [2020-11-09 12:46:03,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:46:03,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:46:03,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965474025] [2020-11-09 12:46:03,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:46:03,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:46:03,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:46:03,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:46:03,866 INFO L87 Difference]: Start difference. First operand 36 states and 57 transitions. Second operand 5 states. [2020-11-09 12:46:03,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:46:03,898 INFO L93 Difference]: Finished difference Result 35 states and 56 transitions. [2020-11-09 12:46:03,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:46:03,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 12:46:03,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:46:03,899 INFO L225 Difference]: With dead ends: 35 [2020-11-09 12:46:03,899 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:46:03,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:46:03,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:46:03,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:46:03,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:46:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:46:03,900 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-09 12:46:03,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:46:03,900 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:46:03,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:46:03,901 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:46:03,901 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:46:03,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-09 12:46:03,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:46:03 BasicIcfg [2020-11-09 12:46:03,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:46:03,911 INFO L168 Benchmark]: Toolchain (without parser) took 9168.31 ms. Allocated memory was 151.0 MB in the beginning and 231.7 MB in the end (delta: 80.7 MB). Free memory was 123.8 MB in the beginning and 148.8 MB in the end (delta: -25.0 MB). Peak memory consumption was 56.4 MB. Max. memory is 8.0 GB. [2020-11-09 12:46:03,912 INFO L168 Benchmark]: CDTParser took 1.46 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:46:03,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 895.26 ms. Allocated memory is still 151.0 MB. Free memory was 123.1 MB in the beginning and 129.1 MB in the end (delta: -5.9 MB). Peak memory consumption was 31.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:46:03,913 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.36 ms. Allocated memory is still 151.0 MB. Free memory was 129.1 MB in the beginning and 127.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:46:03,915 INFO L168 Benchmark]: Boogie Preprocessor took 28.52 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 125.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:46:03,921 INFO L168 Benchmark]: RCFGBuilder took 573.39 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 103.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:46:03,922 INFO L168 Benchmark]: TraceAbstraction took 7580.94 ms. Allocated memory was 151.0 MB in the beginning and 231.7 MB in the end (delta: 80.7 MB). Free memory was 102.8 MB in the beginning and 148.8 MB in the end (delta: -46.0 MB). Peak memory consumption was 34.8 MB. Max. memory is 8.0 GB. [2020-11-09 12:46:03,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.46 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 895.26 ms. Allocated memory is still 151.0 MB. Free memory was 123.1 MB in the beginning and 129.1 MB in the end (delta: -5.9 MB). Peak memory consumption was 31.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 76.36 ms. Allocated memory is still 151.0 MB. Free memory was 129.1 MB in the beginning and 127.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.52 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 125.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 573.39 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 103.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7580.94 ms. Allocated memory was 151.0 MB in the beginning and 231.7 MB in the end (delta: 80.7 MB). Free memory was 102.8 MB in the beginning and 148.8 MB in the end (delta: -46.0 MB). Peak memory consumption was 34.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 961 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 66 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.7s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.4s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 235 SDtfs, 314 SDslu, 408 SDs, 0 SdLazy, 184 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 6369 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...