/usr/bin/java -Xmx16000000000 -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/safe012_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 15:04:27,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 15:04:27,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 15:04:27,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 15:04:27,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 15:04:27,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 15:04:27,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 15:04:27,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 15:04:27,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 15:04:27,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 15:04:27,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 15:04:27,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 15:04:27,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 15:04:27,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 15:04:27,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 15:04:27,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 15:04:27,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 15:04:27,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 15:04:27,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 15:04:27,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 15:04:27,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 15:04:27,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 15:04:27,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 15:04:27,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 15:04:27,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 15:04:27,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 15:04:27,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 15:04:27,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 15:04:27,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 15:04:27,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 15:04:27,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 15:04:27,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 15:04:27,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 15:04:27,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 15:04:27,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 15:04:27,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 15:04:27,198 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 [2020-10-11 15:04:27,228 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 15:04:27,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 15:04:27,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 15:04:27,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 15:04:27,230 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 15:04:27,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 15:04:27,230 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 15:04:27,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 15:04:27,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 15:04:27,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 15:04:27,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 15:04:27,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 15:04:27,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 15:04:27,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 15:04:27,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 15:04:27,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 15:04:27,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 15:04:27,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 15:04:27,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 15:04:27,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 15:04:27,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 15:04:27,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:04:27,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 15:04:27,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 15:04:27,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 15:04:27,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 15:04:27,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 15:04:27,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 15:04:27,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 15:04:27,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 15:04:27,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 15:04:27,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 15:04:27,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 15:04:27,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 15:04:27,512 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 15:04:27,512 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-10-11 15:04:27,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/374d75b74/d541a551f1904d27ac527a7110c3e4ca/FLAG1d27f21a9 [2020-10-11 15:04:28,073 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 15:04:28,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2020-10-11 15:04:28,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/374d75b74/d541a551f1904d27ac527a7110c3e4ca/FLAG1d27f21a9 [2020-10-11 15:04:28,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/374d75b74/d541a551f1904d27ac527a7110c3e4ca [2020-10-11 15:04:28,460 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 15:04:28,462 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 15:04:28,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 15:04:28,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 15:04:28,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 15:04:28,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:04:28" (1/1) ... [2020-10-11 15:04:28,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bfcc862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:28, skipping insertion in model container [2020-10-11 15:04:28,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:04:28" (1/1) ... [2020-10-11 15:04:28,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 15:04:28,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 15:04:28,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:04:28,955 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 15:04:29,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:04:29,088 INFO L208 MainTranslator]: Completed translation [2020-10-11 15:04:29,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:29 WrapperNode [2020-10-11 15:04:29,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 15:04:29,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 15:04:29,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 15:04:29,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 15:04:29,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:29" (1/1) ... [2020-10-11 15:04:29,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:29" (1/1) ... [2020-10-11 15:04:29,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 15:04:29,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 15:04:29,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 15:04:29,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 15:04:29,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:29" (1/1) ... [2020-10-11 15:04:29,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:29" (1/1) ... [2020-10-11 15:04:29,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:29" (1/1) ... [2020-10-11 15:04:29,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:29" (1/1) ... [2020-10-11 15:04:29,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:29" (1/1) ... [2020-10-11 15:04:29,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:29" (1/1) ... [2020-10-11 15:04:29,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:29" (1/1) ... [2020-10-11 15:04:29,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 15:04:29,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 15:04:29,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 15:04:29,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 15:04:29,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:29" (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 [2020-10-11 15:04:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 15:04:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 15:04:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 15:04:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 15:04:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 15:04:29,235 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 15:04:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 15:04:29,236 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 15:04:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 15:04:29,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 15:04:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 15:04:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 15:04:29,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 15:04:29,240 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 15:04:29,576 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 15:04:29,577 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 15:04:29,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:04:29 BoogieIcfgContainer [2020-10-11 15:04:29,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 15:04:29,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 15:04:29,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 15:04:29,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 15:04:29,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:04:28" (1/3) ... [2020-10-11 15:04:29,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0060f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:04:29, skipping insertion in model container [2020-10-11 15:04:29,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:04:29" (2/3) ... [2020-10-11 15:04:29,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0060f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:04:29, skipping insertion in model container [2020-10-11 15:04:29,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:04:29" (3/3) ... [2020-10-11 15:04:29,586 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2020-10-11 15:04:29,597 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 15:04:29,598 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 15:04:29,604 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 15:04:29,605 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 15:04:29,632 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,632 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,632 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,633 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,634 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,634 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,634 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,634 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,635 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,635 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,635 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,636 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,636 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,636 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,636 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,637 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,640 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,640 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,640 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,641 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,652 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,652 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,652 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,653 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,657 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,657 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,657 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,657 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:04:29,670 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 15:04:29,687 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:04:29,687 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:04:29,688 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:04:29,688 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:04:29,688 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:04:29,688 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:04:29,688 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:04:29,688 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:04:29,699 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:04:29,701 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-10-11 15:04:29,704 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 71 transitions, 157 flow [2020-10-11 15:04:29,705 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-10-11 15:04:29,747 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-11 15:04:29,747 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 15:04:29,752 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-11 15:04:29,755 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-11 15:04:31,062 INFO L132 LiptonReduction]: Checked pairs total: 2579 [2020-10-11 15:04:31,063 INFO L134 LiptonReduction]: Total number of compositions: 58 [2020-10-11 15:04:31,069 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-11 15:04:31,097 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-11 15:04:31,099 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-11 15:04:31,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 15:04:31,107 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:31,108 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:31,108 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:31,113 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-10-11 15:04:31,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:31,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642466858] [2020-10-11 15:04:31,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:31,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642466858] [2020-10-11 15:04:31,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:31,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:04:31,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945408439] [2020-10-11 15:04:31,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-11 15:04:31,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:31,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-11 15:04:31,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-11 15:04:31,302 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-11 15:04:31,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:31,337 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-11 15:04:31,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-11 15:04:31,339 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-11 15:04:31,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:31,358 INFO L225 Difference]: With dead ends: 362 [2020-10-11 15:04:31,358 INFO L226 Difference]: Without dead ends: 298 [2020-10-11 15:04:31,360 INFO L673 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 [2020-10-11 15:04:31,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-11 15:04:31,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-11 15:04:31,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-11 15:04:31,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-11 15:04:31,431 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-11 15:04:31,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:31,432 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-11 15:04:31,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-11 15:04:31,432 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-11 15:04:31,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 15:04:31,434 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:31,434 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:31,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 15:04:31,435 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:31,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:31,435 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-10-11 15:04:31,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:31,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158902715] [2020-10-11 15:04:31,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:31,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:31,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158902715] [2020-10-11 15:04:31,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:31,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:04:31,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406841968] [2020-10-11 15:04:31,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:04:31,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:31,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:04:31,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:04:31,585 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-11 15:04:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:31,622 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-10-11 15:04:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:04:31,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-11 15:04:31,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:31,626 INFO L225 Difference]: With dead ends: 330 [2020-10-11 15:04:31,626 INFO L226 Difference]: Without dead ends: 266 [2020-10-11 15:04:31,627 INFO L673 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 [2020-10-11 15:04:31,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-11 15:04:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-11 15:04:31,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-11 15:04:31,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-10-11 15:04:31,651 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-10-11 15:04:31,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:31,652 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-10-11 15:04:31,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:04:31,652 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-10-11 15:04:31,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 15:04:31,654 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:31,654 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:31,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 15:04:31,654 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:31,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:31,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1854523641, now seen corresponding path program 1 times [2020-10-11 15:04:31,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:31,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325742132] [2020-10-11 15:04:31,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:31,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325742132] [2020-10-11 15:04:31,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:31,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 15:04:31,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560084577] [2020-10-11 15:04:31,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:04:31,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:31,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:04:31,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:04:31,755 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 4 states. [2020-10-11 15:04:31,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:31,807 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-10-11 15:04:31,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:04:31,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-11 15:04:31,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:31,810 INFO L225 Difference]: With dead ends: 290 [2020-10-11 15:04:31,810 INFO L226 Difference]: Without dead ends: 242 [2020-10-11 15:04:31,811 INFO L673 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 [2020-10-11 15:04:31,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-11 15:04:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-10-11 15:04:31,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-11 15:04:31,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-10-11 15:04:31,827 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-10-11 15:04:31,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:31,828 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-10-11 15:04:31,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:04:31,828 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-10-11 15:04:31,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 15:04:31,832 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:31,832 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:31,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 15:04:31,833 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:31,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:31,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1654538757, now seen corresponding path program 1 times [2020-10-11 15:04:31,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:31,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765060425] [2020-10-11 15:04:31,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:31,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:31,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765060425] [2020-10-11 15:04:31,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:31,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:04:31,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948736749] [2020-10-11 15:04:31,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:04:31,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:31,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:04:31,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:04:31,884 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-10-11 15:04:31,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:31,929 INFO L93 Difference]: Finished difference Result 302 states and 815 transitions. [2020-10-11 15:04:31,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:04:31,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-11 15:04:31,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:31,931 INFO L225 Difference]: With dead ends: 302 [2020-10-11 15:04:31,931 INFO L226 Difference]: Without dead ends: 140 [2020-10-11 15:04:31,932 INFO L673 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 [2020-10-11 15:04:31,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-11 15:04:31,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-11 15:04:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-11 15:04:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 354 transitions. [2020-10-11 15:04:31,939 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 354 transitions. Word has length 11 [2020-10-11 15:04:31,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:31,940 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 354 transitions. [2020-10-11 15:04:31,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:04:31,940 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 354 transitions. [2020-10-11 15:04:31,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-11 15:04:31,941 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:31,941 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:31,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 15:04:31,942 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:31,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:31,942 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 1 times [2020-10-11 15:04:31,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:31,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770841552] [2020-10-11 15:04:31,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:32,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770841552] [2020-10-11 15:04:32,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:32,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:04:32,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034498025] [2020-10-11 15:04:32,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:04:32,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:32,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:04:32,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:04:32,022 INFO L87 Difference]: Start difference. First operand 140 states and 354 transitions. Second operand 5 states. [2020-10-11 15:04:32,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:32,064 INFO L93 Difference]: Finished difference Result 176 states and 428 transitions. [2020-10-11 15:04:32,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:04:32,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-11 15:04:32,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:32,066 INFO L225 Difference]: With dead ends: 176 [2020-10-11 15:04:32,066 INFO L226 Difference]: Without dead ends: 80 [2020-10-11 15:04:32,067 INFO L673 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 [2020-10-11 15:04:32,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-11 15:04:32,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-11 15:04:32,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-11 15:04:32,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-10-11 15:04:32,071 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 12 [2020-10-11 15:04:32,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:32,071 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-10-11 15:04:32,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:04:32,071 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-10-11 15:04:32,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 15:04:32,072 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:32,072 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:32,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 15:04:32,073 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:32,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:32,073 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-10-11 15:04:32,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:32,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657867325] [2020-10-11 15:04:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:32,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657867325] [2020-10-11 15:04:32,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:32,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:04:32,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205712666] [2020-10-11 15:04:32,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-11 15:04:32,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:32,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-11 15:04:32,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-11 15:04:32,135 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-10-11 15:04:32,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:32,167 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-10-11 15:04:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:04:32,167 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-11 15:04:32,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:32,168 INFO L225 Difference]: With dead ends: 91 [2020-10-11 15:04:32,168 INFO L226 Difference]: Without dead ends: 69 [2020-10-11 15:04:32,169 INFO L673 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 [2020-10-11 15:04:32,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-11 15:04:32,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-11 15:04:32,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-11 15:04:32,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-10-11 15:04:32,172 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-10-11 15:04:32,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:32,172 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-10-11 15:04:32,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-11 15:04:32,172 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-10-11 15:04:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 15:04:32,173 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:32,173 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:32,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 15:04:32,174 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:32,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:32,174 INFO L82 PathProgramCache]: Analyzing trace with hash 822538733, now seen corresponding path program 1 times [2020-10-11 15:04:32,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:32,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124567140] [2020-10-11 15:04:32,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:32,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124567140] [2020-10-11 15:04:32,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:32,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 15:04:32,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115617640] [2020-10-11 15:04:32,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:04:32,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:32,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:04:32,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:04:32,234 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-10-11 15:04:32,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:32,269 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-10-11 15:04:32,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 15:04:32,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-11 15:04:32,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:32,270 INFO L225 Difference]: With dead ends: 65 [2020-10-11 15:04:32,270 INFO L226 Difference]: Without dead ends: 50 [2020-10-11 15:04:32,271 INFO L673 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 [2020-10-11 15:04:32,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-11 15:04:32,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-11 15:04:32,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-11 15:04:32,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-10-11 15:04:32,273 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-10-11 15:04:32,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:32,273 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-10-11 15:04:32,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:04:32,274 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-10-11 15:04:32,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-11 15:04:32,274 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:32,275 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:32,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 15:04:32,275 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:32,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:32,275 INFO L82 PathProgramCache]: Analyzing trace with hash -246333940, now seen corresponding path program 1 times [2020-10-11 15:04:32,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:32,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088057254] [2020-10-11 15:04:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:32,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088057254] [2020-10-11 15:04:32,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:32,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 15:04:32,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908521460] [2020-10-11 15:04:32,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 15:04:32,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:32,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 15:04:32,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:04:32,337 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-10-11 15:04:32,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:32,380 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-10-11 15:04:32,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 15:04:32,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-11 15:04:32,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:32,381 INFO L225 Difference]: With dead ends: 43 [2020-10-11 15:04:32,381 INFO L226 Difference]: Without dead ends: 37 [2020-10-11 15:04:32,382 INFO L673 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 [2020-10-11 15:04:32,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-11 15:04:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-11 15:04:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-11 15:04:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-10-11 15:04:32,384 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-10-11 15:04:32,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:32,384 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-10-11 15:04:32,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 15:04:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-10-11 15:04:32,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-11 15:04:32,385 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:04:32,385 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:04:32,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 15:04:32,385 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:04:32,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:04:32,386 INFO L82 PathProgramCache]: Analyzing trace with hash -570484421, now seen corresponding path program 1 times [2020-10-11 15:04:32,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:04:32,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009742113] [2020-10-11 15:04:32,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:04:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:04:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:04:32,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009742113] [2020-10-11 15:04:32,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:04:32,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 15:04:32,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588898036] [2020-10-11 15:04:32,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 15:04:32,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:04:32,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 15:04:32,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:04:32,430 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-10-11 15:04:32,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:04:32,451 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-10-11 15:04:32,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:04:32,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-11 15:04:32,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:04:32,452 INFO L225 Difference]: With dead ends: 36 [2020-10-11 15:04:32,452 INFO L226 Difference]: Without dead ends: 0 [2020-10-11 15:04:32,452 INFO L673 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 [2020-10-11 15:04:32,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-11 15:04:32,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-11 15:04:32,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-11 15:04:32,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-11 15:04:32,453 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-11 15:04:32,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:04:32,453 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-11 15:04:32,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 15:04:32,454 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-11 15:04:32,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-11 15:04:32,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 15:04:32,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 03:04:32 BasicIcfg [2020-10-11 15:04:32,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 15:04:32,460 INFO L168 Benchmark]: Toolchain (without parser) took 3997.06 ms. Allocated memory was 253.2 MB in the beginning and 372.8 MB in the end (delta: 119.5 MB). Free memory was 208.6 MB in the beginning and 240.9 MB in the end (delta: -32.3 MB). Peak memory consumption was 87.3 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:32,460 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 15:04:32,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.75 ms. Allocated memory was 253.2 MB in the beginning and 320.3 MB in the end (delta: 67.1 MB). Free memory was 208.6 MB in the beginning and 273.7 MB in the end (delta: -65.1 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:32,462 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.29 ms. Allocated memory is still 320.3 MB. Free memory was 273.7 MB in the beginning and 271.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:32,463 INFO L168 Benchmark]: Boogie Preprocessor took 25.21 ms. Allocated memory is still 320.3 MB. Free memory was 271.1 MB in the beginning and 268.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:32,464 INFO L168 Benchmark]: RCFGBuilder took 416.70 ms. Allocated memory is still 320.3 MB. Free memory was 268.6 MB in the beginning and 246.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:32,464 INFO L168 Benchmark]: TraceAbstraction took 2877.48 ms. Allocated memory was 320.3 MB in the beginning and 372.8 MB in the end (delta: 52.4 MB). Free memory was 246.8 MB in the beginning and 240.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 58.3 MB. Max. memory is 14.2 GB. [2020-10-11 15:04:32,468 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 625.75 ms. Allocated memory was 253.2 MB in the beginning and 320.3 MB in the end (delta: 67.1 MB). Free memory was 208.6 MB in the beginning and 273.7 MB in the end (delta: -65.1 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.29 ms. Allocated memory is still 320.3 MB. Free memory was 273.7 MB in the beginning and 271.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.21 ms. Allocated memory is still 320.3 MB. Free memory was 271.1 MB in the beginning and 268.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 416.70 ms. Allocated memory is still 320.3 MB. Free memory was 268.6 MB in the beginning and 246.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2877.48 ms. Allocated memory was 320.3 MB in the beginning and 372.8 MB in the end (delta: 52.4 MB). Free memory was 246.8 MB in the beginning and 240.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 58.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 890 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 83 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 79 PlacesBefore, 32 PlacesAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 58 TotalNumberOfCompositions, 2579 MoverChecksTotal - 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 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 188 SDtfs, 183 SDslu, 268 SDs, 0 SdLazy, 114 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4062 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...