/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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 00:01:48,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 00:01:48,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 00:01:48,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 00:01:48,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 00:01:48,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 00:01:48,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 00:01:48,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 00:01:48,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 00:01:48,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 00:01:48,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 00:01:48,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 00:01:48,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 00:01:48,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 00:01:48,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 00:01:48,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 00:01:48,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 00:01:48,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 00:01:48,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 00:01:48,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 00:01:48,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 00:01:48,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 00:01:48,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 00:01:48,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 00:01:48,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 00:01:48,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 00:01:48,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 00:01:48,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 00:01:48,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 00:01:48,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 00:01:48,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 00:01:48,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 00:01:48,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 00:01:48,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 00:01:48,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 00:01:48,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 00:01:48,183 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-SemanticLbe.epf [2020-11-12 00:01:48,237 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 00:01:48,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 00:01:48,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 00:01:48,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 00:01:48,241 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 00:01:48,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 00:01:48,242 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 00:01:48,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 00:01:48,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 00:01:48,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 00:01:48,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 00:01:48,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 00:01:48,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 00:01:48,244 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 00:01:48,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 00:01:48,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 00:01:48,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 00:01:48,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 00:01:48,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 00:01:48,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 00:01:48,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 00:01:48,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 00:01:48,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 00:01:48,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 00:01:48,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 00:01:48,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 00:01:48,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 00:01:48,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 00:01:48,247 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 00:01:48,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 00:01:48,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 00:01:48,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 00:01:48,715 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 00:01:48,716 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 00:01:48,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-11-12 00:01:48,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e4e9ab1d/7dd77d278f83472b9ec0e4e2ffcf9ec4/FLAG1eced5864 [2020-11-12 00:01:49,589 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 00:01:49,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.oepc.i [2020-11-12 00:01:49,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e4e9ab1d/7dd77d278f83472b9ec0e4e2ffcf9ec4/FLAG1eced5864 [2020-11-12 00:01:49,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e4e9ab1d/7dd77d278f83472b9ec0e4e2ffcf9ec4 [2020-11-12 00:01:49,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 00:01:49,839 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 00:01:49,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 00:01:49,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 00:01:49,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 00:01:49,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:01:49" (1/1) ... [2020-11-12 00:01:49,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229b5e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:01:49, skipping insertion in model container [2020-11-12 00:01:49,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:01:49" (1/1) ... [2020-11-12 00:01:49,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 00:01:49,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 00:01:50,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:01:50,275 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 00:01:50,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 00:01:50,493 INFO L208 MainTranslator]: Completed translation [2020-11-12 00:01:50,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:01:50 WrapperNode [2020-11-12 00:01:50,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 00:01:50,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 00:01:50,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 00:01:50,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 00:01:50,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:01:50" (1/1) ... [2020-11-12 00:01:50,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:01:50" (1/1) ... [2020-11-12 00:01:50,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 00:01:50,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 00:01:50,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 00:01:50,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 00:01:50,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:01:50" (1/1) ... [2020-11-12 00:01:50,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:01:50" (1/1) ... [2020-11-12 00:01:50,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:01:50" (1/1) ... [2020-11-12 00:01:50,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:01:50" (1/1) ... [2020-11-12 00:01:50,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:01:50" (1/1) ... [2020-11-12 00:01:50,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:01:50" (1/1) ... [2020-11-12 00:01:50,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:01:50" (1/1) ... [2020-11-12 00:01:50,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 00:01:50,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 00:01:50,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 00:01:50,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 00:01:50,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:01:50" (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 00:01:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 00:01:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 00:01:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 00:01:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 00:01:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 00:01:50,707 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 00:01:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 00:01:50,707 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 00:01:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 00:01:50,707 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 00:01:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 00:01:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 00:01:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 00:01:50,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 00:01:50,709 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 00:01:51,129 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 00:01:51,130 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 00:01:51,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:01:51 BoogieIcfgContainer [2020-11-12 00:01:51,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 00:01:51,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 00:01:51,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 00:01:51,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 00:01:51,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:01:49" (1/3) ... [2020-11-12 00:01:51,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ac372c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:01:51, skipping insertion in model container [2020-11-12 00:01:51,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:01:50" (2/3) ... [2020-11-12 00:01:51,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ac372c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:01:51, skipping insertion in model container [2020-11-12 00:01:51,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:01:51" (3/3) ... [2020-11-12 00:01:51,141 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.oepc.i [2020-11-12 00:01:51,157 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 00:01:51,157 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 00:01:51,161 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 00:01:51,162 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 00:01:51,196 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,196 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,196 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,196 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,197 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,197 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,197 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,197 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,199 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,199 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,200 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,200 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,200 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,200 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,201 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,201 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,201 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,201 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,202 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,202 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,203 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,203 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,203 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,203 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,204 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,204 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,204 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,207 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,207 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,207 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,207 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,216 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,217 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,220 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,220 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,220 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,220 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 00:01:51,223 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 00:01:51,235 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 00:01:51,259 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 00:01:51,260 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 00:01:51,260 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 00:01:51,260 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 00:01:51,260 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 00:01:51,260 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 00:01:51,260 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 00:01:51,260 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 00:01:51,273 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-12 00:01:51,275 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-12 00:01:51,278 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-12 00:01:51,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-11-12 00:01:51,325 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-11-12 00:01:51,325 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-12 00:01:51,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-11-12 00:01:51,332 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-11-12 00:01:53,106 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-12 00:01:54,232 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-11-12 00:01:54,440 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-11-12 00:01:54,862 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-12 00:01:54,969 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-12 00:01:55,198 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-12 00:01:55,330 INFO L131 LiptonReduction]: Checked pairs total: 2554 [2020-11-12 00:01:55,330 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-11-12 00:01:55,336 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-12 00:01:55,364 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 274 states, 272 states have (on average 3.0661764705882355) internal successors, (834), 273 states have internal predecessors, (834), 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 00:01:55,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 274 states, 272 states have (on average 3.0661764705882355) internal successors, (834), 273 states have internal predecessors, (834), 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 00:01:55,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-12 00:01:55,375 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:01:55,376 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:01:55,376 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:01:55,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:01:55,382 INFO L82 PathProgramCache]: Analyzing trace with hash 192010575, now seen corresponding path program 1 times [2020-11-12 00:01:55,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:01:55,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576046991] [2020-11-12 00:01:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:01:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:01:55,568 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 00:01:55,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576046991] [2020-11-12 00:01:55,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:01:55,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:01:55,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543367055] [2020-11-12 00:01:55,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-12 00:01:55,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:01:55,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-12 00:01:55,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-12 00:01:55,600 INFO L87 Difference]: Start difference. First operand has 274 states, 272 states have (on average 3.0661764705882355) internal successors, (834), 273 states have internal predecessors, (834), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 00:01:55,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:01:55,645 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-11-12 00:01:55,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-12 00:01:55,649 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2020-11-12 00:01:55,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:01:55,673 INFO L225 Difference]: With dead ends: 274 [2020-11-12 00:01:55,673 INFO L226 Difference]: Without dead ends: 226 [2020-11-12 00:01:55,674 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-12 00:01:55,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-12 00:01:55,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-12 00:01:55,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.8177777777777777) internal successors, (634), 225 states have internal predecessors, (634), 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 00:01:55,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-11-12 00:01:55,740 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-11-12 00:01:55,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:01:55,741 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-11-12 00:01:55,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 00:01:55,741 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-11-12 00:01:55,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-12 00:01:55,743 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:01:55,743 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:01:55,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 00:01:55,743 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:01:55,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:01:55,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1657351430, now seen corresponding path program 1 times [2020-11-12 00:01:55,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:01:55,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830774757] [2020-11-12 00:01:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:01:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:01:55,930 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 00:01:55,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830774757] [2020-11-12 00:01:55,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:01:55,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:01:55,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874184465] [2020-11-12 00:01:55,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:01:55,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:01:55,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:01:55,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:01:55,936 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 00:01:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:01:55,985 INFO L93 Difference]: Finished difference Result 262 states and 700 transitions. [2020-11-12 00:01:55,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 00:01:55,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2020-11-12 00:01:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:01:55,988 INFO L225 Difference]: With dead ends: 262 [2020-11-12 00:01:55,988 INFO L226 Difference]: Without dead ends: 214 [2020-11-12 00:01:55,989 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:01:55,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-11-12 00:01:56,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-11-12 00:01:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.7699530516431925) internal successors, (590), 213 states have internal predecessors, (590), 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 00:01:56,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 590 transitions. [2020-11-12 00:01:56,011 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 590 transitions. Word has length 9 [2020-11-12 00:01:56,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:01:56,011 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 590 transitions. [2020-11-12 00:01:56,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 00:01:56,012 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 590 transitions. [2020-11-12 00:01:56,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-12 00:01:56,013 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:01:56,014 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:01:56,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 00:01:56,014 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:01:56,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:01:56,015 INFO L82 PathProgramCache]: Analyzing trace with hash -440849813, now seen corresponding path program 1 times [2020-11-12 00:01:56,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:01:56,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549836308] [2020-11-12 00:01:56,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:01:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:01:56,082 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 00:01:56,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549836308] [2020-11-12 00:01:56,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:01:56,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 00:01:56,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414841875] [2020-11-12 00:01:56,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:01:56,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:01:56,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:01:56,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:01:56,085 INFO L87 Difference]: Start difference. First operand 214 states and 590 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 00:01:56,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:01:56,105 INFO L93 Difference]: Finished difference Result 232 states and 614 transitions. [2020-11-12 00:01:56,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 00:01:56,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2020-11-12 00:01:56,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:01:56,108 INFO L225 Difference]: With dead ends: 232 [2020-11-12 00:01:56,108 INFO L226 Difference]: Without dead ends: 196 [2020-11-12 00:01:56,108 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:01:56,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-11-12 00:01:56,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-11-12 00:01:56,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.717948717948718) internal successors, (530), 195 states have internal predecessors, (530), 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 00:01:56,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-11-12 00:01:56,132 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-11-12 00:01:56,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:01:56,133 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-11-12 00:01:56,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 00:01:56,133 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-11-12 00:01:56,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-12 00:01:56,135 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:01:56,135 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:01:56,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 00:01:56,136 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:01:56,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:01:56,138 INFO L82 PathProgramCache]: Analyzing trace with hash -782393194, now seen corresponding path program 1 times [2020-11-12 00:01:56,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:01:56,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143743118] [2020-11-12 00:01:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:01:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:01:56,272 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 00:01:56,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143743118] [2020-11-12 00:01:56,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:01:56,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:01:56,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223582586] [2020-11-12 00:01:56,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 00:01:56,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:01:56,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 00:01:56,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:01:56,276 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 00:01:56,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:01:56,348 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2020-11-12 00:01:56,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 00:01:56,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2020-11-12 00:01:56,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:01:56,350 INFO L225 Difference]: With dead ends: 255 [2020-11-12 00:01:56,350 INFO L226 Difference]: Without dead ends: 150 [2020-11-12 00:01:56,351 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-12 00:01:56,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-12 00:01:56,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-11-12 00:01:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.5369127516778525) internal successors, (378), 149 states have internal predecessors, (378), 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 00:01:56,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-11-12 00:01:56,376 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-11-12 00:01:56,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:01:56,378 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-11-12 00:01:56,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 00:01:56,378 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-11-12 00:01:56,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-12 00:01:56,380 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:01:56,380 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:01:56,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 00:01:56,380 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:01:56,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:01:56,381 INFO L82 PathProgramCache]: Analyzing trace with hash -396758816, now seen corresponding path program 1 times [2020-11-12 00:01:56,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:01:56,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923871959] [2020-11-12 00:01:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:01:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:01:56,471 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 00:01:56,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923871959] [2020-11-12 00:01:56,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:01:56,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:01:56,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740484794] [2020-11-12 00:01:56,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:01:56,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:01:56,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:01:56,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:01:56,474 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 00:01:56,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:01:56,505 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-11-12 00:01:56,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 00:01:56,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2020-11-12 00:01:56,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:01:56,507 INFO L225 Difference]: With dead ends: 164 [2020-11-12 00:01:56,508 INFO L226 Difference]: Without dead ends: 128 [2020-11-12 00:01:56,508 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:01:56,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-12 00:01:56,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-11-12 00:01:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.3070866141732282) internal successors, (293), 127 states have internal predecessors, (293), 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 00:01:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-11-12 00:01:56,515 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-11-12 00:01:56,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:01:56,515 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-11-12 00:01:56,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 00:01:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-11-12 00:01:56,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-12 00:01:56,517 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:01:56,517 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:01:56,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 00:01:56,517 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:01:56,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:01:56,518 INFO L82 PathProgramCache]: Analyzing trace with hash -614239441, now seen corresponding path program 1 times [2020-11-12 00:01:56,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:01:56,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412802677] [2020-11-12 00:01:56,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:01:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:01:56,581 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 00:01:56,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412802677] [2020-11-12 00:01:56,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:01:56,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 00:01:56,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987068304] [2020-11-12 00:01:56,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 00:01:56,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:01:56,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 00:01:56,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:01:56,583 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 00:01:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:01:56,643 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-11-12 00:01:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 00:01:56,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2020-11-12 00:01:56,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:01:56,644 INFO L225 Difference]: With dead ends: 116 [2020-11-12 00:01:56,644 INFO L226 Difference]: Without dead ends: 92 [2020-11-12 00:01:56,645 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-12 00:01:56,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-12 00:01:56,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-11-12 00:01:56,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.043956043956044) internal successors, (186), 91 states have internal predecessors, (186), 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 00:01:56,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-11-12 00:01:56,650 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-11-12 00:01:56,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:01:56,650 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-11-12 00:01:56,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 00:01:56,650 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-11-12 00:01:56,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-12 00:01:56,651 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:01:56,652 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:01:56,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 00:01:56,652 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:01:56,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:01:56,653 INFO L82 PathProgramCache]: Analyzing trace with hash 734676869, now seen corresponding path program 1 times [2020-11-12 00:01:56,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:01:56,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115311881] [2020-11-12 00:01:56,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:01:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:01:56,691 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 00:01:56,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115311881] [2020-11-12 00:01:56,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:01:56,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 00:01:56,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079817603] [2020-11-12 00:01:56,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 00:01:56,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:01:56,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 00:01:56,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-12 00:01:56,693 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 00:01:56,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:01:56,714 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-11-12 00:01:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 00:01:56,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2020-11-12 00:01:56,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:01:56,716 INFO L225 Difference]: With dead ends: 120 [2020-11-12 00:01:56,716 INFO L226 Difference]: Without dead ends: 94 [2020-11-12 00:01:56,716 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:01:56,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-12 00:01:56,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-11-12 00:01:56,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.9662921348314606) internal successors, (175), 89 states have internal predecessors, (175), 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 00:01:56,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-11-12 00:01:56,720 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-11-12 00:01:56,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:01:56,721 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-11-12 00:01:56,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 00:01:56,721 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-11-12 00:01:56,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-12 00:01:56,722 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:01:56,722 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:01:56,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 00:01:56,722 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:01:56,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:01:56,723 INFO L82 PathProgramCache]: Analyzing trace with hash 987031467, now seen corresponding path program 1 times [2020-11-12 00:01:56,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:01:56,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514242467] [2020-11-12 00:01:56,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:01:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:01:56,791 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 00:01:56,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514242467] [2020-11-12 00:01:56,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:01:56,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-12 00:01:56,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624168719] [2020-11-12 00:01:56,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 00:01:56,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:01:56,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 00:01:56,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-12 00:01:56,794 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 00:01:56,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:01:56,866 INFO L93 Difference]: Finished difference Result 81 states and 155 transitions. [2020-11-12 00:01:56,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 00:01:56,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2020-11-12 00:01:56,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:01:56,867 INFO L225 Difference]: With dead ends: 81 [2020-11-12 00:01:56,868 INFO L226 Difference]: Without dead ends: 34 [2020-11-12 00:01:56,869 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-12 00:01:56,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-12 00:01:56,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-12 00:01:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 33 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 00:01:56,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-11-12 00:01:56,871 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 15 [2020-11-12 00:01:56,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:01:56,872 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-11-12 00:01:56,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 00:01:56,872 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-11-12 00:01:56,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-12 00:01:56,872 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 00:01:56,873 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 00:01:56,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-12 00:01:56,873 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 00:01:56,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 00:01:56,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1437328766, now seen corresponding path program 1 times [2020-11-12 00:01:56,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 00:01:56,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562763314] [2020-11-12 00:01:56,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 00:01:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 00:01:56,922 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 00:01:56,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562763314] [2020-11-12 00:01:56,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 00:01:56,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-12 00:01:56,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557441495] [2020-11-12 00:01:56,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 00:01:56,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 00:01:56,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 00:01:56,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-12 00:01:56,925 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 00:01:56,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 00:01:56,953 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-11-12 00:01:56,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 00:01:56,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2020-11-12 00:01:56,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 00:01:56,953 INFO L225 Difference]: With dead ends: 33 [2020-11-12 00:01:56,953 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 00:01:56,954 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-12 00:01:56,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 00:01:56,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 00:01:56,954 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 00:01:56,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 00:01:56,955 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-12 00:01:56,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 00:01:56,955 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 00:01:56,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 00:01:56,955 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 00:01:56,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 00:01:56,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-12 00:01:56,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:01:56 BasicIcfg [2020-11-12 00:01:56,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 00:01:56,960 INFO L168 Benchmark]: Toolchain (without parser) took 7126.05 ms. Allocated memory was 302.0 MB in the beginning and 377.5 MB in the end (delta: 75.5 MB). Free memory was 276.5 MB in the beginning and 197.7 MB in the end (delta: 78.9 MB). Peak memory consumption was 156.4 MB. Max. memory is 16.0 GB. [2020-11-12 00:01:56,961 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 00:01:56,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.26 ms. Allocated memory is still 302.0 MB. Free memory was 275.9 MB in the beginning and 274.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:01:56,962 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.80 ms. Allocated memory is still 302.0 MB. Free memory was 274.3 MB in the beginning and 272.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:01:56,963 INFO L168 Benchmark]: Boogie Preprocessor took 49.27 ms. Allocated memory is still 302.0 MB. Free memory was 272.2 MB in the beginning and 271.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 00:01:56,964 INFO L168 Benchmark]: RCFGBuilder took 500.05 ms. Allocated memory is still 302.0 MB. Free memory was 271.0 MB in the beginning and 248.7 MB in the end (delta: 22.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2020-11-12 00:01:56,965 INFO L168 Benchmark]: TraceAbstraction took 5825.16 ms. Allocated memory was 302.0 MB in the beginning and 377.5 MB in the end (delta: 75.5 MB). Free memory was 248.4 MB in the beginning and 197.7 MB in the end (delta: 50.8 MB). Peak memory consumption was 127.3 MB. Max. memory is 16.0 GB. [2020-11-12 00:01:56,968 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 654.26 ms. Allocated memory is still 302.0 MB. Free memory was 275.9 MB in the beginning and 274.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 82.80 ms. Allocated memory is still 302.0 MB. Free memory was 274.3 MB in the beginning and 272.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 49.27 ms. Allocated memory is still 302.0 MB. Free memory was 272.2 MB in the beginning and 271.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 500.05 ms. Allocated memory is still 302.0 MB. Free memory was 271.0 MB in the beginning and 248.7 MB in the end (delta: 22.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5825.16 ms. Allocated memory was 302.0 MB in the beginning and 377.5 MB in the end (delta: 75.5 MB). Free memory was 248.4 MB in the beginning and 197.7 MB in the end (delta: 50.8 MB). Peak memory consumption was 127.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 903 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 73 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.0s, 84 PlacesBefore, 31 PlacesAfterwards, 77 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2554 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 181 SDtfs, 161 SDslu, 276 SDs, 0 SdLazy, 125 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 3210 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...