/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-New_States.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 12:14:28,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 12:14:28,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 12:14:28,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 12:14:28,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 12:14:28,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 12:14:28,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 12:14:28,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 12:14:28,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 12:14:28,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 12:14:28,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 12:14:28,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 12:14:28,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 12:14:28,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 12:14:28,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 12:14:28,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 12:14:28,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 12:14:28,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 12:14:28,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 12:14:28,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 12:14:28,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 12:14:28,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 12:14:28,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 12:14:28,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 12:14:28,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 12:14:28,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 12:14:28,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 12:14:28,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 12:14:28,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 12:14:28,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 12:14:28,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 12:14:28,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 12:14:28,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 12:14:28,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 12:14:28,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 12:14:28,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 12:14:28,220 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-New_States.epf [2020-11-12 12:14:28,278 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 12:14:28,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 12:14:28,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 12:14:28,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 12:14:28,280 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 12:14:28,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 12:14:28,281 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 12:14:28,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 12:14:28,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 12:14:28,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 12:14:28,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 12:14:28,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 12:14:28,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 12:14:28,284 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 12:14:28,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 12:14:28,284 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 12:14:28,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 12:14:28,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 12:14:28,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 12:14:28,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 12:14:28,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 12:14:28,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:14:28,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 12:14:28,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 12:14:28,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 12:14:28,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 12:14:28,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 12:14:28,287 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 12:14:28,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 12:14:28,287 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 12:14:28,288 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=NEW_STATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 12:14:28,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 12:14:28,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 12:14:28,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 12:14:28,706 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 12:14:28,708 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 12:14:28,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-11-12 12:14:28,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97dfab75/2be08f22ee734ebc84e5ade6dfdeaa3e/FLAGa8be7763d [2020-11-12 12:14:29,522 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 12:14:29,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.opt.i [2020-11-12 12:14:29,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97dfab75/2be08f22ee734ebc84e5ade6dfdeaa3e/FLAGa8be7763d [2020-11-12 12:14:29,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97dfab75/2be08f22ee734ebc84e5ade6dfdeaa3e [2020-11-12 12:14:29,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 12:14:29,755 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 12:14:29,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 12:14:29,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 12:14:29,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 12:14:29,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:29" (1/1) ... [2020-11-12 12:14:29,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@91692a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:29, skipping insertion in model container [2020-11-12 12:14:29,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:29" (1/1) ... [2020-11-12 12:14:29,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 12:14:29,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 12:14:30,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:14:30,243 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 12:14:30,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:14:30,464 INFO L208 MainTranslator]: Completed translation [2020-11-12 12:14:30,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:30 WrapperNode [2020-11-12 12:14:30,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 12:14:30,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 12:14:30,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 12:14:30,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 12:14:30,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:30" (1/1) ... [2020-11-12 12:14:30,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:30" (1/1) ... [2020-11-12 12:14:30,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 12:14:30,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 12:14:30,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 12:14:30,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 12:14:30,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:30" (1/1) ... [2020-11-12 12:14:30,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:30" (1/1) ... [2020-11-12 12:14:30,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:30" (1/1) ... [2020-11-12 12:14:30,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:30" (1/1) ... [2020-11-12 12:14:30,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:30" (1/1) ... [2020-11-12 12:14:30,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:30" (1/1) ... [2020-11-12 12:14:30,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:30" (1/1) ... [2020-11-12 12:14:30,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 12:14:30,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 12:14:30,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 12:14:30,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 12:14:30,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:14:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 12:14:30,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 12:14:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 12:14:30,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 12:14:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 12:14:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 12:14:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 12:14:30,663 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 12:14:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 12:14:30,664 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 12:14:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 12:14:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 12:14:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 12:14:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 12:14:30,666 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 12:14:31,079 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 12:14:31,079 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 12:14:31,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:31 BoogieIcfgContainer [2020-11-12 12:14:31,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 12:14:31,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 12:14:31,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 12:14:31,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 12:14:31,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:14:29" (1/3) ... [2020-11-12 12:14:31,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bd3b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:31, skipping insertion in model container [2020-11-12 12:14:31,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:30" (2/3) ... [2020-11-12 12:14:31,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bd3b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:31, skipping insertion in model container [2020-11-12 12:14:31,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:31" (3/3) ... [2020-11-12 12:14:31,089 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.opt.i [2020-11-12 12:14:31,105 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 12:14:31,105 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 12:14:31,109 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 12:14:31,110 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 12:14:31,140 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,141 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,141 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,141 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,141 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,142 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,142 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,142 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,143 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,143 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,143 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,143 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,144 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,144 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,144 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,144 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,145 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,145 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,145 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,145 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,146 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,146 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,146 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,146 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,147 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,147 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,147 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,147 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,148 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,148 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,148 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,148 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,149 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,149 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,149 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,149 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,152 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,152 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,153 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,153 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,158 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,158 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,158 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,159 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,161 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,161 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,161 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,161 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:14:31,163 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 12:14:31,176 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 12:14:31,197 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 12:14:31,197 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 12:14:31,197 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 12:14:31,198 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 12:14:31,198 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 12:14:31,198 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 12:14:31,198 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 12:14:31,198 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 12:14:31,218 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 79 transitions, 173 flow [2020-11-12 12:14:31,987 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:32,963 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 972ms [2020-11-12 12:14:33,000 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 9848 states, 9846 states have (on average 3.614665854153971) internal successors, (35590), 9847 states have internal predecessors, (35590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:33,071 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 34526 states, 31589 states have (on average 1.2089968026844788) internal successors, (38191), 34525 states have internal predecessors, (38191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:33,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 34526 states, 31589 states have (on average 1.2089968026844788) internal successors, (38191), 34525 states have internal predecessors, (38191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:33,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-12 12:14:33,244 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:33,245 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:14:33,246 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:33,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:33,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1557079206, now seen corresponding path program 1 times [2020-11-12 12:14:33,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:33,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079034319] [2020-11-12 12:14:33,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:33,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079034319] [2020-11-12 12:14:33,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:33,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:14:33,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406235084] [2020-11-12 12:14:33,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:14:33,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:33,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:14:33,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:14:33,712 INFO L87 Difference]: Start difference. First operand has 34526 states, 31589 states have (on average 1.2089968026844788) internal successors, (38191), 34525 states have internal predecessors, (38191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:34,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:34,046 INFO L93 Difference]: Finished difference Result 14052 states and 16436 transitions. [2020-11-12 12:14:34,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:14:34,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2020-11-12 12:14:34,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:34,095 INFO L225 Difference]: With dead ends: 14052 [2020-11-12 12:14:34,095 INFO L226 Difference]: Without dead ends: 4781 [2020-11-12 12:14:34,098 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:14:34,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2020-11-12 12:14:34,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 4781. [2020-11-12 12:14:34,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4781 states, 4536 states have (on average 1.3589065255731922) internal successors, (6164), 4780 states have internal predecessors, (6164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4781 states to 4781 states and 6164 transitions. [2020-11-12 12:14:34,359 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 6164 transitions. Word has length 42 [2020-11-12 12:14:34,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:34,360 INFO L481 AbstractCegarLoop]: Abstraction has 4781 states and 6164 transitions. [2020-11-12 12:14:34,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:34,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 6164 transitions. [2020-11-12 12:14:34,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-12 12:14:34,368 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:34,369 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:14:34,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 12:14:34,369 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:34,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:34,370 INFO L82 PathProgramCache]: Analyzing trace with hash 882658663, now seen corresponding path program 1 times [2020-11-12 12:14:34,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:34,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749671412] [2020-11-12 12:14:34,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:34,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749671412] [2020-11-12 12:14:34,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:34,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:14:34,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892514623] [2020-11-12 12:14:34,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:14:34,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:34,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:14:34,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:14:34,557 INFO L87 Difference]: Start difference. First operand 4781 states and 6164 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:34,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:34,756 INFO L93 Difference]: Finished difference Result 6244 states and 8156 transitions. [2020-11-12 12:14:34,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:14:34,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2020-11-12 12:14:34,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:34,769 INFO L225 Difference]: With dead ends: 6244 [2020-11-12 12:14:34,770 INFO L226 Difference]: Without dead ends: 2687 [2020-11-12 12:14:34,770 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:14:34,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2020-11-12 12:14:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 2687. [2020-11-12 12:14:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2687 states, 2547 states have (on average 1.2866117000392618) internal successors, (3277), 2686 states have internal predecessors, (3277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:34,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2687 states to 2687 states and 3277 transitions. [2020-11-12 12:14:34,833 INFO L78 Accepts]: Start accepts. Automaton has 2687 states and 3277 transitions. Word has length 44 [2020-11-12 12:14:34,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:34,834 INFO L481 AbstractCegarLoop]: Abstraction has 2687 states and 3277 transitions. [2020-11-12 12:14:34,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:34,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2687 states and 3277 transitions. [2020-11-12 12:14:34,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 12:14:34,839 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:34,839 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:14:34,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 12:14:34,839 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:34,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:34,840 INFO L82 PathProgramCache]: Analyzing trace with hash -176270830, now seen corresponding path program 1 times [2020-11-12 12:14:34,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:34,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955494513] [2020-11-12 12:14:34,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:35,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:35,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955494513] [2020-11-12 12:14:35,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:35,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:14:35,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375606204] [2020-11-12 12:14:35,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:14:35,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:35,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:14:35,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:14:35,028 INFO L87 Difference]: Start difference. First operand 2687 states and 3277 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:35,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:35,199 INFO L93 Difference]: Finished difference Result 2819 states and 3297 transitions. [2020-11-12 12:14:35,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:14:35,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2020-11-12 12:14:35,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:35,210 INFO L225 Difference]: With dead ends: 2819 [2020-11-12 12:14:35,211 INFO L226 Difference]: Without dead ends: 2152 [2020-11-12 12:14:35,211 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:14:35,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2020-11-12 12:14:35,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 2152. [2020-11-12 12:14:35,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 2040 states have (on average 1.2387254901960785) internal successors, (2527), 2151 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:35,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 2527 transitions. [2020-11-12 12:14:35,279 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 2527 transitions. Word has length 47 [2020-11-12 12:14:35,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:35,281 INFO L481 AbstractCegarLoop]: Abstraction has 2152 states and 2527 transitions. [2020-11-12 12:14:35,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:35,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 2527 transitions. [2020-11-12 12:14:35,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-12 12:14:35,286 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:35,286 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:14:35,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 12:14:35,287 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:35,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:35,290 INFO L82 PathProgramCache]: Analyzing trace with hash 162268976, now seen corresponding path program 1 times [2020-11-12 12:14:35,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:35,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453764357] [2020-11-12 12:14:35,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:35,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453764357] [2020-11-12 12:14:35,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:35,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:14:35,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215148954] [2020-11-12 12:14:35,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:14:35,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:35,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:14:35,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:14:35,486 INFO L87 Difference]: Start difference. First operand 2152 states and 2527 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:35,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:35,618 INFO L93 Difference]: Finished difference Result 2264 states and 2623 transitions. [2020-11-12 12:14:35,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:14:35,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2020-11-12 12:14:35,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:35,627 INFO L225 Difference]: With dead ends: 2264 [2020-11-12 12:14:35,627 INFO L226 Difference]: Without dead ends: 1611 [2020-11-12 12:14:35,628 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:14:35,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-11-12 12:14:35,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1611. [2020-11-12 12:14:35,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1531 states have (on average 1.2527759634225997) internal successors, (1918), 1610 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:35,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 1918 transitions. [2020-11-12 12:14:35,670 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 1918 transitions. Word has length 48 [2020-11-12 12:14:35,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:35,671 INFO L481 AbstractCegarLoop]: Abstraction has 1611 states and 1918 transitions. [2020-11-12 12:14:35,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:35,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 1918 transitions. [2020-11-12 12:14:35,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-12 12:14:35,675 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:35,675 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:14:35,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 12:14:35,675 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:35,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:35,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1846738929, now seen corresponding path program 1 times [2020-11-12 12:14:35,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:35,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028933645] [2020-11-12 12:14:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:35,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028933645] [2020-11-12 12:14:35,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:35,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:14:35,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156617781] [2020-11-12 12:14:35,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:14:35,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:35,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:14:35,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:14:35,847 INFO L87 Difference]: Start difference. First operand 1611 states and 1918 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:35,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:35,972 INFO L93 Difference]: Finished difference Result 2778 states and 3335 transitions. [2020-11-12 12:14:35,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:14:35,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2020-11-12 12:14:35,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:35,980 INFO L225 Difference]: With dead ends: 2778 [2020-11-12 12:14:35,981 INFO L226 Difference]: Without dead ends: 1607 [2020-11-12 12:14:35,981 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:14:35,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2020-11-12 12:14:36,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1607. [2020-11-12 12:14:36,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1527 states have (on average 1.2475442043222005) internal successors, (1905), 1606 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 1905 transitions. [2020-11-12 12:14:36,020 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 1905 transitions. Word has length 50 [2020-11-12 12:14:36,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:36,023 INFO L481 AbstractCegarLoop]: Abstraction has 1607 states and 1905 transitions. [2020-11-12 12:14:36,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:36,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 1905 transitions. [2020-11-12 12:14:36,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-12 12:14:36,028 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:36,028 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:14:36,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 12:14:36,029 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:36,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:36,029 INFO L82 PathProgramCache]: Analyzing trace with hash -811265535, now seen corresponding path program 2 times [2020-11-12 12:14:36,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:36,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354897449] [2020-11-12 12:14:36,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:36,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354897449] [2020-11-12 12:14:36,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:36,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:14:36,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530695222] [2020-11-12 12:14:36,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:14:36,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:36,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:14:36,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:14:36,190 INFO L87 Difference]: Start difference. First operand 1607 states and 1905 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:36,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:36,310 INFO L93 Difference]: Finished difference Result 1885 states and 2155 transitions. [2020-11-12 12:14:36,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:14:36,311 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2020-11-12 12:14:36,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:36,319 INFO L225 Difference]: With dead ends: 1885 [2020-11-12 12:14:36,319 INFO L226 Difference]: Without dead ends: 1563 [2020-11-12 12:14:36,319 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:14:36,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2020-11-12 12:14:36,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1563. [2020-11-12 12:14:36,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1485 states have (on average 1.232996632996633) internal successors, (1831), 1562 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:36,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 1831 transitions. [2020-11-12 12:14:36,369 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 1831 transitions. Word has length 50 [2020-11-12 12:14:36,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:36,369 INFO L481 AbstractCegarLoop]: Abstraction has 1563 states and 1831 transitions. [2020-11-12 12:14:36,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:36,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 1831 transitions. [2020-11-12 12:14:36,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 12:14:36,376 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:36,376 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:14:36,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 12:14:36,376 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:36,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:36,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1203143900, now seen corresponding path program 1 times [2020-11-12 12:14:36,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:36,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076684289] [2020-11-12 12:14:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:36,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076684289] [2020-11-12 12:14:36,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:36,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:14:36,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43595137] [2020-11-12 12:14:36,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:14:36,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:36,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:14:36,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:14:36,555 INFO L87 Difference]: Start difference. First operand 1563 states and 1831 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:36,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:36,690 INFO L93 Difference]: Finished difference Result 1663 states and 1888 transitions. [2020-11-12 12:14:36,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:14:36,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-12 12:14:36,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:36,696 INFO L225 Difference]: With dead ends: 1663 [2020-11-12 12:14:36,696 INFO L226 Difference]: Without dead ends: 1261 [2020-11-12 12:14:36,697 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-12 12:14:36,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2020-11-12 12:14:36,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1261. [2020-11-12 12:14:36,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 1198 states have (on average 1.172787979966611) internal successors, (1405), 1260 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1405 transitions. [2020-11-12 12:14:36,736 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1405 transitions. Word has length 51 [2020-11-12 12:14:36,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:36,736 INFO L481 AbstractCegarLoop]: Abstraction has 1261 states and 1405 transitions. [2020-11-12 12:14:36,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:36,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1405 transitions. [2020-11-12 12:14:36,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-12 12:14:36,739 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:36,740 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:14:36,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 12:14:36,740 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:36,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:36,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1482004455, now seen corresponding path program 1 times [2020-11-12 12:14:36,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:36,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316360626] [2020-11-12 12:14:36,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:36,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316360626] [2020-11-12 12:14:36,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:36,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 12:14:36,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710594084] [2020-11-12 12:14:36,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 12:14:36,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:36,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 12:14:36,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 12:14:36,909 INFO L87 Difference]: Start difference. First operand 1261 states and 1405 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:37,077 INFO L93 Difference]: Finished difference Result 1010 states and 1091 transitions. [2020-11-12 12:14:37,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 12:14:37,078 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2020-11-12 12:14:37,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:37,081 INFO L225 Difference]: With dead ends: 1010 [2020-11-12 12:14:37,082 INFO L226 Difference]: Without dead ends: 570 [2020-11-12 12:14:37,083 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-12 12:14:37,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-11-12 12:14:37,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2020-11-12 12:14:37,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 543 states have (on average 1.0699815837937385) internal successors, (581), 569 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:37,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 581 transitions. [2020-11-12 12:14:37,105 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 581 transitions. Word has length 52 [2020-11-12 12:14:37,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:37,105 INFO L481 AbstractCegarLoop]: Abstraction has 570 states and 581 transitions. [2020-11-12 12:14:37,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:37,106 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 581 transitions. [2020-11-12 12:14:37,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-12 12:14:37,107 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:37,107 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:14:37,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-12 12:14:37,108 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:37,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:37,108 INFO L82 PathProgramCache]: Analyzing trace with hash 357086726, now seen corresponding path program 1 times [2020-11-12 12:14:37,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:37,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123940632] [2020-11-12 12:14:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:37,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123940632] [2020-11-12 12:14:37,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:37,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:14:37,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008737184] [2020-11-12 12:14:37,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:14:37,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:37,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:14:37,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:14:37,253 INFO L87 Difference]: Start difference. First operand 570 states and 581 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:37,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:37,353 INFO L93 Difference]: Finished difference Result 934 states and 942 transitions. [2020-11-12 12:14:37,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:14:37,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2020-11-12 12:14:37,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:37,356 INFO L225 Difference]: With dead ends: 934 [2020-11-12 12:14:37,357 INFO L226 Difference]: Without dead ends: 519 [2020-11-12 12:14:37,357 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:14:37,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-11-12 12:14:37,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 519. [2020-11-12 12:14:37,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 492 states have (on average 1.0528455284552845) internal successors, (518), 518 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:37,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 518 transitions. [2020-11-12 12:14:37,374 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 518 transitions. Word has length 54 [2020-11-12 12:14:37,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:37,375 INFO L481 AbstractCegarLoop]: Abstraction has 519 states and 518 transitions. [2020-11-12 12:14:37,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:37,376 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 518 transitions. [2020-11-12 12:14:37,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-12 12:14:37,377 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:14:37,377 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:14:37,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-12 12:14:37,378 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:14:37,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:14:37,378 INFO L82 PathProgramCache]: Analyzing trace with hash -919954456, now seen corresponding path program 2 times [2020-11-12 12:14:37,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:14:37,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746331484] [2020-11-12 12:14:37,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:14:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:14:37,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:14:37,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746331484] [2020-11-12 12:14:37,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:14:37,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:14:37,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997840288] [2020-11-12 12:14:37,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:14:37,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:14:37,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:14:37,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:14:37,505 INFO L87 Difference]: Start difference. First operand 519 states and 518 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:37,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:14:37,590 INFO L93 Difference]: Finished difference Result 411 states and 410 transitions. [2020-11-12 12:14:37,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:14:37,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2020-11-12 12:14:37,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:14:37,591 INFO L225 Difference]: With dead ends: 411 [2020-11-12 12:14:37,591 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 12:14:37,591 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:14:37,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 12:14:37,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 12:14:37,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:37,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 12:14:37,592 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2020-11-12 12:14:37,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:14:37,593 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 12:14:37,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:14:37,593 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 12:14:37,593 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 12:14:37,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-12 12:14:37,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:14:37 BasicIcfg [2020-11-12 12:14:37,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 12:14:37,601 INFO L168 Benchmark]: Toolchain (without parser) took 7851.45 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 906.0 MB). Free memory was 276.0 MB in the beginning and 764.2 MB in the end (delta: -488.3 MB). Peak memory consumption was 418.9 MB. Max. memory is 16.0 GB. [2020-11-12 12:14:37,602 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:14:37,602 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.26 ms. Allocated memory is still 302.0 MB. Free memory was 275.4 MB in the beginning and 274.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2020-11-12 12:14:37,603 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.13 ms. Allocated memory is still 302.0 MB. Free memory was 274.0 MB in the beginning and 272.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:14:37,603 INFO L168 Benchmark]: Boogie Preprocessor took 44.26 ms. Allocated memory is still 302.0 MB. Free memory was 272.0 MB in the beginning and 270.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:14:37,604 INFO L168 Benchmark]: RCFGBuilder took 487.90 ms. Allocated memory is still 302.0 MB. Free memory was 270.4 MB in the beginning and 248.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2020-11-12 12:14:37,605 INFO L168 Benchmark]: TraceAbstraction took 6516.18 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 906.0 MB). Free memory was 248.2 MB in the beginning and 764.2 MB in the end (delta: -516.0 MB). Peak memory consumption was 392.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:14:37,608 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 707.26 ms. Allocated memory is still 302.0 MB. Free memory was 275.4 MB in the beginning and 274.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 68.13 ms. Allocated memory is still 302.0 MB. Free memory was 274.0 MB in the beginning and 272.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 44.26 ms. Allocated memory is still 302.0 MB. Free memory was 272.0 MB in the beginning and 270.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 487.90 ms. Allocated memory is still 302.0 MB. Free memory was 270.4 MB in the beginning and 248.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6516.18 ms. Allocated memory was 302.0 MB in the beginning and 1.2 GB in the end (delta: 906.0 MB). Free memory was 248.2 MB in the beginning and 764.2 MB in the end (delta: -516.0 MB). Peak memory consumption was 392.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 652 SDtfs, 806 SDslu, 2431 SDs, 0 SdLazy, 283 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34526occurred 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: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 492 NumberOfCodeBlocks, 492 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 482 ConstructedInterpolants, 0 QuantifiedInterpolants, 62254 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...