/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 22:50:32,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 22:50:32,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 22:50:32,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 22:50:32,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 22:50:32,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 22:50:32,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 22:50:32,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 22:50:32,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 22:50:32,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 22:50:32,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 22:50:32,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 22:50:32,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 22:50:32,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 22:50:32,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 22:50:32,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 22:50:32,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 22:50:32,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 22:50:32,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 22:50:32,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 22:50:32,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 22:50:32,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 22:50:32,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 22:50:32,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 22:50:32,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 22:50:32,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 22:50:32,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 22:50:32,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 22:50:32,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 22:50:32,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 22:50:32,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 22:50:32,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 22:50:32,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 22:50:32,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 22:50:32,250 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 22:50:32,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 22:50:32,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-05 22:50:32,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 22:50:32,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 22:50:32,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 22:50:32,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 22:50:32,306 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 22:50:32,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 22:50:32,307 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 22:50:32,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 22:50:32,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 22:50:32,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 22:50:32,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 22:50:32,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 22:50:32,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 22:50:32,309 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 22:50:32,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 22:50:32,309 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 22:50:32,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 22:50:32,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 22:50:32,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 22:50:32,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 22:50:32,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 22:50:32,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:50:32,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 22:50:32,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 22:50:32,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 22:50:32,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 22:50:32,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 22:50:32,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 22:50:32,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 22:50:32,313 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 22:50:32,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 22:50:32,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 22:50:32,621 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 22:50:32,622 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 22:50:32,623 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 22:50:32,623 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i [2020-10-05 22:50:32,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c94f3ec86/c0b6bcb8711f4d3a8abcf73edcc2ec88/FLAG62fb9ca35 [2020-10-05 22:50:33,202 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 22:50:33,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i [2020-10-05 22:50:33,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c94f3ec86/c0b6bcb8711f4d3a8abcf73edcc2ec88/FLAG62fb9ca35 [2020-10-05 22:50:33,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c94f3ec86/c0b6bcb8711f4d3a8abcf73edcc2ec88 [2020-10-05 22:50:33,499 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 22:50:33,501 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 22:50:33,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 22:50:33,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 22:50:33,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 22:50:33,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:50:33" (1/1) ... [2020-10-05 22:50:33,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c8f0b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:33, skipping insertion in model container [2020-10-05 22:50:33,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:50:33" (1/1) ... [2020-10-05 22:50:33,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 22:50:33,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 22:50:33,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:50:33,975 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 22:50:34,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:50:34,111 INFO L208 MainTranslator]: Completed translation [2020-10-05 22:50:34,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:34 WrapperNode [2020-10-05 22:50:34,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 22:50:34,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 22:50:34,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 22:50:34,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 22:50:34,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:34" (1/1) ... [2020-10-05 22:50:34,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:34" (1/1) ... [2020-10-05 22:50:34,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 22:50:34,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 22:50:34,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 22:50:34,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 22:50:34,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:34" (1/1) ... [2020-10-05 22:50:34,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:34" (1/1) ... [2020-10-05 22:50:34,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:34" (1/1) ... [2020-10-05 22:50:34,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:34" (1/1) ... [2020-10-05 22:50:34,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:34" (1/1) ... [2020-10-05 22:50:34,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:34" (1/1) ... [2020-10-05 22:50:34,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:34" (1/1) ... [2020-10-05 22:50:34,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 22:50:34,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 22:50:34,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 22:50:34,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 22:50:34,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:34" (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 [2020-10-05 22:50:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 22:50:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 22:50:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 22:50:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 22:50:34,263 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-05 22:50:34,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-05 22:50:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-05 22:50:34,264 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-05 22:50:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-05 22:50:34,264 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-05 22:50:34,264 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-05 22:50:34,264 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-05 22:50:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 22:50:34,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 22:50:34,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 22:50:34,266 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 22:50:34,598 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 22:50:34,598 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-05 22:50:34,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:50:34 BoogieIcfgContainer [2020-10-05 22:50:34,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 22:50:34,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 22:50:34,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 22:50:34,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 22:50:34,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:50:33" (1/3) ... [2020-10-05 22:50:34,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2866a6b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:50:34, skipping insertion in model container [2020-10-05 22:50:34,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:50:34" (2/3) ... [2020-10-05 22:50:34,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2866a6b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:50:34, skipping insertion in model container [2020-10-05 22:50:34,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:50:34" (3/3) ... [2020-10-05 22:50:34,614 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_tso.opt.i [2020-10-05 22:50:34,635 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 22:50:34,638 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 22:50:34,649 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 22:50:34,654 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 22:50:34,705 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,706 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,706 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,707 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,707 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,708 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,708 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,708 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,709 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,709 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,712 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,713 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,713 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,713 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,714 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,714 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,717 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,718 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,718 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,719 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,720 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,720 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,720 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,729 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,730 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,731 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,731 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,740 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,740 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,741 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,741 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,746 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,747 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,752 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,753 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,753 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,753 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:50:34,776 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-05 22:50:34,799 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 22:50:34,799 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 22:50:34,800 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 22:50:34,800 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 22:50:34,800 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 22:50:34,800 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 22:50:34,800 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 22:50:34,801 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 22:50:34,824 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 81 transitions, 182 flow [2020-10-05 22:50:34,826 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-10-05 22:50:34,874 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-10-05 22:50:34,874 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:50:34,879 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-05 22:50:34,883 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-10-05 22:50:34,906 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-10-05 22:50:34,907 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:50:34,907 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-05 22:50:34,911 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-10-05 22:50:34,912 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 22:50:36,631 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-10-05 22:50:36,868 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3093 [2020-10-05 22:50:36,868 INFO L214 etLargeBlockEncoding]: Total number of compositions: 65 [2020-10-05 22:50:36,873 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-10-05 22:50:36,921 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-10-05 22:50:36,923 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-10-05 22:50:36,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:50:36,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:36,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:36,935 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:36,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:36,940 INFO L82 PathProgramCache]: Analyzing trace with hash -2005095105, now seen corresponding path program 1 times [2020-10-05 22:50:36,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:36,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472418219] [2020-10-05 22:50:36,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:37,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472418219] [2020-10-05 22:50:37,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:37,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:50:37,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107782025] [2020-10-05 22:50:37,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:50:37,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:37,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:50:37,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:50:37,217 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-10-05 22:50:37,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:37,295 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-10-05 22:50:37,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:50:37,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-05 22:50:37,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:37,319 INFO L225 Difference]: With dead ends: 670 [2020-10-05 22:50:37,319 INFO L226 Difference]: Without dead ends: 526 [2020-10-05 22:50:37,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:50:37,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-10-05 22:50:37,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-10-05 22:50:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-10-05 22:50:37,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-10-05 22:50:37,416 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-10-05 22:50:37,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:37,417 INFO L479 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-10-05 22:50:37,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:50:37,418 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-10-05 22:50:37,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:50:37,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:37,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:37,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 22:50:37,421 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:37,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:37,422 INFO L82 PathProgramCache]: Analyzing trace with hash -2027599793, now seen corresponding path program 1 times [2020-10-05 22:50:37,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:37,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310239249] [2020-10-05 22:50:37,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:37,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:37,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310239249] [2020-10-05 22:50:37,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:37,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:50:37,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493393478] [2020-10-05 22:50:37,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:50:37,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:37,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:50:37,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:50:37,505 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-10-05 22:50:37,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:37,536 INFO L93 Difference]: Finished difference Result 682 states and 2180 transitions. [2020-10-05 22:50:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:50:37,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-05 22:50:37,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:37,541 INFO L225 Difference]: With dead ends: 682 [2020-10-05 22:50:37,541 INFO L226 Difference]: Without dead ends: 394 [2020-10-05 22:50:37,542 INFO L675 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 [2020-10-05 22:50:37,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-05 22:50:37,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-10-05 22:50:37,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-05 22:50:37,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2020-10-05 22:50:37,566 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 11 [2020-10-05 22:50:37,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:37,567 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2020-10-05 22:50:37,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:50:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2020-10-05 22:50:37,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:50:37,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:37,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:37,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 22:50:37,573 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:37,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:37,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1004375926, now seen corresponding path program 1 times [2020-10-05 22:50:37,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:37,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319251649] [2020-10-05 22:50:37,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:37,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319251649] [2020-10-05 22:50:37,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:37,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:50:37,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106841435] [2020-10-05 22:50:37,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:50:37,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:37,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:50:37,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:50:37,629 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand 3 states. [2020-10-05 22:50:37,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:37,641 INFO L93 Difference]: Finished difference Result 386 states and 1190 transitions. [2020-10-05 22:50:37,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:50:37,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-05 22:50:37,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:37,644 INFO L225 Difference]: With dead ends: 386 [2020-10-05 22:50:37,645 INFO L226 Difference]: Without dead ends: 386 [2020-10-05 22:50:37,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:50:37,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-05 22:50:37,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2020-10-05 22:50:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-10-05 22:50:37,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1190 transitions. [2020-10-05 22:50:37,663 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1190 transitions. Word has length 12 [2020-10-05 22:50:37,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:37,663 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 1190 transitions. [2020-10-05 22:50:37,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:50:37,663 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1190 transitions. [2020-10-05 22:50:37,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:50:37,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:37,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:37,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 22:50:37,666 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:37,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:37,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1071238165, now seen corresponding path program 1 times [2020-10-05 22:50:37,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:37,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991051914] [2020-10-05 22:50:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:37,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:37,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991051914] [2020-10-05 22:50:37,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:37,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:50:37,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561292781] [2020-10-05 22:50:37,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:50:37,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:37,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:50:37,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:50:37,720 INFO L87 Difference]: Start difference. First operand 386 states and 1190 transitions. Second operand 3 states. [2020-10-05 22:50:37,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:37,733 INFO L93 Difference]: Finished difference Result 466 states and 1378 transitions. [2020-10-05 22:50:37,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:50:37,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-05 22:50:37,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:37,737 INFO L225 Difference]: With dead ends: 466 [2020-10-05 22:50:37,737 INFO L226 Difference]: Without dead ends: 402 [2020-10-05 22:50:37,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:50:37,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-10-05 22:50:37,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 370. [2020-10-05 22:50:37,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2020-10-05 22:50:37,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1098 transitions. [2020-10-05 22:50:37,751 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1098 transitions. Word has length 13 [2020-10-05 22:50:37,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:37,751 INFO L479 AbstractCegarLoop]: Abstraction has 370 states and 1098 transitions. [2020-10-05 22:50:37,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:50:37,752 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1098 transitions. [2020-10-05 22:50:37,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:50:37,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:37,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:37,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 22:50:37,754 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:37,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:37,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1070883463, now seen corresponding path program 1 times [2020-10-05 22:50:37,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:37,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272128546] [2020-10-05 22:50:37,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:37,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272128546] [2020-10-05 22:50:37,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:37,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:50:37,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730322258] [2020-10-05 22:50:37,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:50:37,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:37,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:50:37,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:50:37,793 INFO L87 Difference]: Start difference. First operand 370 states and 1098 transitions. Second operand 3 states. [2020-10-05 22:50:37,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:37,800 INFO L93 Difference]: Finished difference Result 358 states and 1054 transitions. [2020-10-05 22:50:37,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:50:37,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-05 22:50:37,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:37,803 INFO L225 Difference]: With dead ends: 358 [2020-10-05 22:50:37,803 INFO L226 Difference]: Without dead ends: 358 [2020-10-05 22:50:37,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:50:37,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-05 22:50:37,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-10-05 22:50:37,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-10-05 22:50:37,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1054 transitions. [2020-10-05 22:50:37,815 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1054 transitions. Word has length 13 [2020-10-05 22:50:37,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:37,816 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 1054 transitions. [2020-10-05 22:50:37,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:50:37,816 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1054 transitions. [2020-10-05 22:50:37,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:50:37,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:37,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:37,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 22:50:37,818 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:37,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:37,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1189218785, now seen corresponding path program 1 times [2020-10-05 22:50:37,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:37,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72255434] [2020-10-05 22:50:37,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:37,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:37,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72255434] [2020-10-05 22:50:37,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:37,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:50:37,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244200844] [2020-10-05 22:50:37,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:50:37,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:37,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:50:37,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:50:37,922 INFO L87 Difference]: Start difference. First operand 358 states and 1054 transitions. Second operand 4 states. [2020-10-05 22:50:37,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:37,953 INFO L93 Difference]: Finished difference Result 514 states and 1482 transitions. [2020-10-05 22:50:37,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:50:37,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-05 22:50:37,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:37,955 INFO L225 Difference]: With dead ends: 514 [2020-10-05 22:50:37,956 INFO L226 Difference]: Without dead ends: 274 [2020-10-05 22:50:37,956 INFO L675 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 [2020-10-05 22:50:37,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-05 22:50:37,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-10-05 22:50:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-05 22:50:37,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2020-10-05 22:50:37,965 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 14 [2020-10-05 22:50:37,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:37,965 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2020-10-05 22:50:37,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:50:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2020-10-05 22:50:37,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:50:37,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:37,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:37,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 22:50:37,967 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:37,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:37,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1162350155, now seen corresponding path program 2 times [2020-10-05 22:50:37,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:37,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000527497] [2020-10-05 22:50:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:38,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000527497] [2020-10-05 22:50:38,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:38,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:50:38,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610025271] [2020-10-05 22:50:38,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:50:38,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:38,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:50:38,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:50:38,033 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand 4 states. [2020-10-05 22:50:38,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:38,072 INFO L93 Difference]: Finished difference Result 345 states and 911 transitions. [2020-10-05 22:50:38,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:50:38,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-05 22:50:38,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:38,075 INFO L225 Difference]: With dead ends: 345 [2020-10-05 22:50:38,075 INFO L226 Difference]: Without dead ends: 252 [2020-10-05 22:50:38,075 INFO L675 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 [2020-10-05 22:50:38,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-05 22:50:38,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-10-05 22:50:38,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-05 22:50:38,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 675 transitions. [2020-10-05 22:50:38,083 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 675 transitions. Word has length 14 [2020-10-05 22:50:38,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:38,084 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 675 transitions. [2020-10-05 22:50:38,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:50:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 675 transitions. [2020-10-05 22:50:38,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 22:50:38,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:38,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:38,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 22:50:38,086 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:38,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:38,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1647463604, now seen corresponding path program 1 times [2020-10-05 22:50:38,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:38,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246661547] [2020-10-05 22:50:38,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:38,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246661547] [2020-10-05 22:50:38,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:38,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:50:38,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785897617] [2020-10-05 22:50:38,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:50:38,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:38,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:50:38,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:50:38,148 INFO L87 Difference]: Start difference. First operand 252 states and 675 transitions. Second operand 5 states. [2020-10-05 22:50:38,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:38,200 INFO L93 Difference]: Finished difference Result 278 states and 685 transitions. [2020-10-05 22:50:38,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:50:38,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-05 22:50:38,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:38,203 INFO L225 Difference]: With dead ends: 278 [2020-10-05 22:50:38,203 INFO L226 Difference]: Without dead ends: 203 [2020-10-05 22:50:38,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:50:38,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-05 22:50:38,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-10-05 22:50:38,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-05 22:50:38,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 492 transitions. [2020-10-05 22:50:38,210 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 492 transitions. Word has length 15 [2020-10-05 22:50:38,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:38,210 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 492 transitions. [2020-10-05 22:50:38,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:50:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 492 transitions. [2020-10-05 22:50:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-05 22:50:38,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:38,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:38,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 22:50:38,212 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:38,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:38,212 INFO L82 PathProgramCache]: Analyzing trace with hash -469082430, now seen corresponding path program 1 times [2020-10-05 22:50:38,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:38,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020725188] [2020-10-05 22:50:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:38,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:38,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020725188] [2020-10-05 22:50:38,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:38,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:50:38,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610345238] [2020-10-05 22:50:38,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:50:38,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:38,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:50:38,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:50:38,277 INFO L87 Difference]: Start difference. First operand 203 states and 492 transitions. Second operand 6 states. [2020-10-05 22:50:38,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:38,332 INFO L93 Difference]: Finished difference Result 200 states and 461 transitions. [2020-10-05 22:50:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:50:38,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-05 22:50:38,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:38,334 INFO L225 Difference]: With dead ends: 200 [2020-10-05 22:50:38,335 INFO L226 Difference]: Without dead ends: 162 [2020-10-05 22:50:38,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-05 22:50:38,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-05 22:50:38,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-10-05 22:50:38,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-05 22:50:38,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2020-10-05 22:50:38,340 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 16 [2020-10-05 22:50:38,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:38,341 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2020-10-05 22:50:38,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:50:38,341 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2020-10-05 22:50:38,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-05 22:50:38,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:38,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:38,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 22:50:38,342 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:38,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:38,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1305224855, now seen corresponding path program 1 times [2020-10-05 22:50:38,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:38,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033219483] [2020-10-05 22:50:38,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:38,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033219483] [2020-10-05 22:50:38,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:38,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:50:38,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028739500] [2020-10-05 22:50:38,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:50:38,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:38,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:50:38,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:50:38,378 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand 4 states. [2020-10-05 22:50:38,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:38,394 INFO L93 Difference]: Finished difference Result 194 states and 439 transitions. [2020-10-05 22:50:38,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:50:38,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-05 22:50:38,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:38,396 INFO L225 Difference]: With dead ends: 194 [2020-10-05 22:50:38,396 INFO L226 Difference]: Without dead ends: 127 [2020-10-05 22:50:38,397 INFO L675 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 [2020-10-05 22:50:38,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-05 22:50:38,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-10-05 22:50:38,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-05 22:50:38,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-10-05 22:50:38,401 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-10-05 22:50:38,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:38,401 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-10-05 22:50:38,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:50:38,402 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-10-05 22:50:38,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-05 22:50:38,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:38,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:38,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 22:50:38,403 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:38,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:38,403 INFO L82 PathProgramCache]: Analyzing trace with hash 483879941, now seen corresponding path program 2 times [2020-10-05 22:50:38,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:38,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793714375] [2020-10-05 22:50:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:38,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:38,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793714375] [2020-10-05 22:50:38,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:38,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-05 22:50:38,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123194481] [2020-10-05 22:50:38,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-05 22:50:38,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:38,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-05 22:50:38,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-05 22:50:38,473 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 7 states. [2020-10-05 22:50:38,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:38,554 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-10-05 22:50:38,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:50:38,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-05 22:50:38,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:38,555 INFO L225 Difference]: With dead ends: 120 [2020-10-05 22:50:38,556 INFO L226 Difference]: Without dead ends: 71 [2020-10-05 22:50:38,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-05 22:50:38,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-05 22:50:38,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-05 22:50:38,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-05 22:50:38,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-10-05 22:50:38,559 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-10-05 22:50:38,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:38,560 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-10-05 22:50:38,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-05 22:50:38,560 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-10-05 22:50:38,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-05 22:50:38,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:50:38,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:50:38,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-05 22:50:38,561 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:50:38,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:50:38,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1087350585, now seen corresponding path program 1 times [2020-10-05 22:50:38,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:50:38,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145979509] [2020-10-05 22:50:38,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:50:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:50:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:50:38,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145979509] [2020-10-05 22:50:38,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:50:38,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:50:38,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939234183] [2020-10-05 22:50:38,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:50:38,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:50:38,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:50:38,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:50:38,601 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2020-10-05 22:50:38,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:50:38,616 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-10-05 22:50:38,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:50:38,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-05 22:50:38,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:50:38,617 INFO L225 Difference]: With dead ends: 70 [2020-10-05 22:50:38,617 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 22:50:38,617 INFO L675 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 [2020-10-05 22:50:38,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 22:50:38,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 22:50:38,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 22:50:38,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 22:50:38,618 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-05 22:50:38,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:50:38,619 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 22:50:38,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:50:38,619 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 22:50:38,619 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 22:50:38,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-05 22:50:38,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:50:38 BasicIcfg [2020-10-05 22:50:38,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 22:50:38,626 INFO L168 Benchmark]: Toolchain (without parser) took 5124.52 ms. Allocated memory was 142.6 MB in the beginning and 276.3 MB in the end (delta: 133.7 MB). Free memory was 104.6 MB in the beginning and 118.6 MB in the end (delta: -14.0 MB). Peak memory consumption was 119.7 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:38,627 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-05 22:50:38,628 INFO L168 Benchmark]: CACSL2BoogieTranslator took 610.19 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 104.4 MB in the beginning and 161.3 MB in the end (delta: -56.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:38,628 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.11 ms. Allocated memory is still 204.5 MB. Free memory was 161.3 MB in the beginning and 158.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:38,629 INFO L168 Benchmark]: Boogie Preprocessor took 26.40 ms. Allocated memory is still 204.5 MB. Free memory was 158.6 MB in the beginning and 157.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:38,630 INFO L168 Benchmark]: RCFGBuilder took 413.35 ms. Allocated memory is still 204.5 MB. Free memory was 157.4 MB in the beginning and 133.2 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:38,631 INFO L168 Benchmark]: TraceAbstraction took 4020.92 ms. Allocated memory was 204.5 MB in the beginning and 276.3 MB in the end (delta: 71.8 MB). Free memory was 132.6 MB in the beginning and 118.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. [2020-10-05 22:50:38,635 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 610.19 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 104.4 MB in the beginning and 161.3 MB in the end (delta: -56.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.11 ms. Allocated memory is still 204.5 MB. Free memory was 161.3 MB in the beginning and 158.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.40 ms. Allocated memory is still 204.5 MB. Free memory was 158.6 MB in the beginning and 157.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 413.35 ms. Allocated memory is still 204.5 MB. Free memory was 157.4 MB in the beginning and 133.2 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4020.92 ms. Allocated memory was 204.5 MB in the beginning and 276.3 MB in the end (delta: 71.8 MB). Free memory was 132.6 MB in the beginning and 118.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 92 ProgramPointsBefore, 38 ProgramPointsAfterwards, 81 TransitionsBefore, 25 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 951 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 25 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 3093 CheckedPairsTotal, 65 TotalNumberOfCompositions - PositiveResult [Line: 7]: 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 5 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 258 SDtfs, 237 SDslu, 349 SDs, 0 SdLazy, 196 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 34 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 6430 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...