/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:12:03,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:12:03,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:12:03,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:12:03,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:12:03,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:12:03,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:12:03,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:12:03,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:12:03,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:12:03,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:12:03,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:12:03,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:12:03,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:12:03,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:12:03,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:12:03,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:12:03,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:12:03,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:12:03,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:12:03,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:12:03,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:12:03,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:12:03,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:12:03,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:12:03,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:12:03,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:12:03,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:12:03,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:12:03,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:12:03,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:12:03,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:12:03,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:12:03,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:12:03,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:12:03,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:12:03,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:12:03,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:12:03,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:12:03,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:12:03,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:12:03,240 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:12:03,270 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:12:03,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:12:03,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:12:03,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:12:03,273 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:12:03,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:12:03,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:12:03,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:12:03,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:12:03,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:12:03,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:12:03,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:12:03,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:12:03,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:12:03,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:12:03,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:12:03,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:12:03,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:12:03,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:12:03,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:12:03,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:12:03,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:12:03,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:12:03,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:12:03,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:12:03,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:12:03,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:12:03,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:12:03,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:12:03,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:12:03,743 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:12:03,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i [2020-12-22 11:12:03,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d436e26/3a4e7daef9da429abdcd90057fae4b2e/FLAG1b6c8722f [2020-12-22 11:12:04,593 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:12:04,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i [2020-12-22 11:12:04,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d436e26/3a4e7daef9da429abdcd90057fae4b2e/FLAG1b6c8722f [2020-12-22 11:12:04,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d436e26/3a4e7daef9da429abdcd90057fae4b2e [2020-12-22 11:12:04,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:12:04,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:12:04,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:12:04,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:12:04,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:12:04,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:12:04" (1/1) ... [2020-12-22 11:12:04,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21274174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:04, skipping insertion in model container [2020-12-22 11:12:04,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:12:04" (1/1) ... [2020-12-22 11:12:04,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:12:04,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:12:05,121 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i[950,963] [2020-12-22 11:12:05,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:12:05,325 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:12:05,340 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i[950,963] [2020-12-22 11:12:05,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:12:05,547 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:12:05,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:05 WrapperNode [2020-12-22 11:12:05,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:12:05,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:12:05,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:12:05,567 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:12:05,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:05" (1/1) ... [2020-12-22 11:12:05,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:05" (1/1) ... [2020-12-22 11:12:05,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:12:05,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:12:05,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:12:05,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:12:05,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:05" (1/1) ... [2020-12-22 11:12:05,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:05" (1/1) ... [2020-12-22 11:12:05,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:05" (1/1) ... [2020-12-22 11:12:05,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:05" (1/1) ... [2020-12-22 11:12:05,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:05" (1/1) ... [2020-12-22 11:12:05,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:05" (1/1) ... [2020-12-22 11:12:05,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:05" (1/1) ... [2020-12-22 11:12:05,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:12:05,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:12:05,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:12:05,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:12:05,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:05" (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 [2020-12-22 11:12:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:12:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:12:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:12:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:12:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:12:05,853 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:12:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:12:05,854 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:12:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-22 11:12:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-22 11:12:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:12:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:12:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:12:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:12:05,858 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-22 11:12:06,343 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:12:06,343 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:12:06,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:12:06 BoogieIcfgContainer [2020-12-22 11:12:06,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:12:06,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:12:06,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:12:06,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:12:06,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:12:04" (1/3) ... [2020-12-22 11:12:06,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2956a796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:12:06, skipping insertion in model container [2020-12-22 11:12:06,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:05" (2/3) ... [2020-12-22 11:12:06,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2956a796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:12:06, skipping insertion in model container [2020-12-22 11:12:06,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:12:06" (3/3) ... [2020-12-22 11:12:06,355 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2020-12-22 11:12:06,363 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:12:06,364 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:12:06,369 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:12:06,370 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:12:06,413 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,413 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,413 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,414 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,414 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,414 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,414 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,414 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,415 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,415 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,416 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,416 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,416 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,416 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,417 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,417 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,417 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,417 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,417 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,417 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,418 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,418 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,418 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,418 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,419 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,419 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,419 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,420 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,420 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,420 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,420 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,420 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,421 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,421 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,421 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,421 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,424 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,424 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,425 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,425 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,431 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,431 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,432 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,432 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,435 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,435 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,436 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,436 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:06,439 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:12:06,460 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 11:12:06,486 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:12:06,486 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:12:06,486 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:12:06,486 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:12:06,487 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:12:06,487 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:12:06,487 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:12:06,487 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:12:06,501 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:12:06,503 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-22 11:12:06,507 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-22 11:12:06,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2020-12-22 11:12:06,555 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2020-12-22 11:12:06,555 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:12:06,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 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. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-12-22 11:12:06,563 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2020-12-22 11:12:10,042 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-22 11:12:10,144 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-22 11:12:10,361 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-22 11:12:10,490 INFO L131 LiptonReduction]: Checked pairs total: 2136 [2020-12-22 11:12:10,491 INFO L133 LiptonReduction]: Total number of compositions: 62 [2020-12-22 11:12:10,498 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-12-22 11:12:10,533 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-12-22 11:12:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-12-22 11:12:10,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 11:12:10,543 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:10,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:10,545 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:10,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:10,559 INFO L82 PathProgramCache]: Analyzing trace with hash -301136603, now seen corresponding path program 1 times [2020-12-22 11:12:10,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:10,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051852894] [2020-12-22 11:12:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:10,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:12:10,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051852894] [2020-12-22 11:12:10,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:10,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-22 11:12:10,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122573213] [2020-12-22 11:12:10,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:12:10,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:10,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:12:10,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:12:10,948 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-12-22 11:12:11,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:11,015 INFO L93 Difference]: Finished difference Result 340 states and 895 transitions. [2020-12-22 11:12:11,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:12:11,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-22 11:12:11,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:11,043 INFO L225 Difference]: With dead ends: 340 [2020-12-22 11:12:11,043 INFO L226 Difference]: Without dead ends: 232 [2020-12-22 11:12:11,046 INFO L677 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 [2020-12-22 11:12:11,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-12-22 11:12:11,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 210. [2020-12-22 11:12:11,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-12-22 11:12:11,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 547 transitions. [2020-12-22 11:12:11,178 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 547 transitions. Word has length 8 [2020-12-22 11:12:11,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:11,181 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 547 transitions. [2020-12-22 11:12:11,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:12:11,181 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 547 transitions. [2020-12-22 11:12:11,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 11:12:11,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:11,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:11,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:12:11,186 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:11,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:11,190 INFO L82 PathProgramCache]: Analyzing trace with hash -761965005, now seen corresponding path program 1 times [2020-12-22 11:12:11,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:11,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911467863] [2020-12-22 11:12:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:12:11,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911467863] [2020-12-22 11:12:11,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:11,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-22 11:12:11,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388846597] [2020-12-22 11:12:11,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:12:11,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:11,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:12:11,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:12:11,335 INFO L87 Difference]: Start difference. First operand 210 states and 547 transitions. Second operand 3 states. [2020-12-22 11:12:11,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:11,345 INFO L93 Difference]: Finished difference Result 202 states and 521 transitions. [2020-12-22 11:12:11,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:12:11,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-22 11:12:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:11,349 INFO L225 Difference]: With dead ends: 202 [2020-12-22 11:12:11,349 INFO L226 Difference]: Without dead ends: 202 [2020-12-22 11:12:11,350 INFO L677 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 [2020-12-22 11:12:11,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-12-22 11:12:11,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 186. [2020-12-22 11:12:11,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-12-22 11:12:11,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 485 transitions. [2020-12-22 11:12:11,372 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 485 transitions. Word has length 9 [2020-12-22 11:12:11,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:11,375 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 485 transitions. [2020-12-22 11:12:11,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:12:11,375 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 485 transitions. [2020-12-22 11:12:11,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 11:12:11,376 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:11,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:11,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:12:11,377 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:11,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:11,378 INFO L82 PathProgramCache]: Analyzing trace with hash -745317602, now seen corresponding path program 1 times [2020-12-22 11:12:11,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:11,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341513241] [2020-12-22 11:12:11,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:11,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:12:11,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341513241] [2020-12-22 11:12:11,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:11,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:12:11,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144685513] [2020-12-22 11:12:11,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:12:11,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:11,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:12:11,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:11,494 INFO L87 Difference]: Start difference. First operand 186 states and 485 transitions. Second operand 4 states. [2020-12-22 11:12:11,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:11,571 INFO L93 Difference]: Finished difference Result 208 states and 519 transitions. [2020-12-22 11:12:11,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:12:11,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 11:12:11,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:11,574 INFO L225 Difference]: With dead ends: 208 [2020-12-22 11:12:11,574 INFO L226 Difference]: Without dead ends: 208 [2020-12-22 11:12:11,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:11,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-12-22 11:12:11,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 180. [2020-12-22 11:12:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-22 11:12:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 463 transitions. [2020-12-22 11:12:11,588 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 463 transitions. Word has length 9 [2020-12-22 11:12:11,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:11,589 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 463 transitions. [2020-12-22 11:12:11,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:12:11,589 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 463 transitions. [2020-12-22 11:12:11,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:12:11,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:11,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:11,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:12:11,593 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:11,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:11,594 INFO L82 PathProgramCache]: Analyzing trace with hash -2146096176, now seen corresponding path program 1 times [2020-12-22 11:12:11,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:11,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396772023] [2020-12-22 11:12:11,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:11,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:12:11,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396772023] [2020-12-22 11:12:11,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:11,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:12:11,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240149005] [2020-12-22 11:12:11,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:12:11,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:11,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:12:11,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:11,705 INFO L87 Difference]: Start difference. First operand 180 states and 463 transitions. Second operand 4 states. [2020-12-22 11:12:11,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:11,749 INFO L93 Difference]: Finished difference Result 209 states and 490 transitions. [2020-12-22 11:12:11,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:12:11,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 11:12:11,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:11,752 INFO L225 Difference]: With dead ends: 209 [2020-12-22 11:12:11,752 INFO L226 Difference]: Without dead ends: 151 [2020-12-22 11:12:11,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:12:11,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-22 11:12:11,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-12-22 11:12:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-12-22 11:12:11,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 348 transitions. [2020-12-22 11:12:11,761 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 348 transitions. Word has length 10 [2020-12-22 11:12:11,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:11,762 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 348 transitions. [2020-12-22 11:12:11,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:12:11,762 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 348 transitions. [2020-12-22 11:12:11,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:12:11,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:11,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:11,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:12:11,764 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:11,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:11,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1675797027, now seen corresponding path program 1 times [2020-12-22 11:12:11,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:11,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492894942] [2020-12-22 11:12:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:12:11,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492894942] [2020-12-22 11:12:11,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:11,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:12:11,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350147333] [2020-12-22 11:12:11,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:12:11,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:11,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:12:11,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:12:11,864 INFO L87 Difference]: Start difference. First operand 151 states and 348 transitions. Second operand 5 states. [2020-12-22 11:12:11,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:11,928 INFO L93 Difference]: Finished difference Result 148 states and 315 transitions. [2020-12-22 11:12:11,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:12:11,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 11:12:11,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:11,930 INFO L225 Difference]: With dead ends: 148 [2020-12-22 11:12:11,930 INFO L226 Difference]: Without dead ends: 111 [2020-12-22 11:12:11,930 INFO L677 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 [2020-12-22 11:12:11,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-12-22 11:12:11,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-12-22 11:12:11,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-22 11:12:11,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 225 transitions. [2020-12-22 11:12:11,938 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 225 transitions. Word has length 11 [2020-12-22 11:12:11,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:11,939 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 225 transitions. [2020-12-22 11:12:11,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:12:11,939 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 225 transitions. [2020-12-22 11:12:11,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:12:11,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:11,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:11,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:12:11,945 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:11,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:11,946 INFO L82 PathProgramCache]: Analyzing trace with hash 170235503, now seen corresponding path program 1 times [2020-12-22 11:12:11,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:11,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641269032] [2020-12-22 11:12:11,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:12,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:12:12,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641269032] [2020-12-22 11:12:12,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:12,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:12:12,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705988959] [2020-12-22 11:12:12,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:12:12,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:12,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:12:12,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:12:12,063 INFO L87 Difference]: Start difference. First operand 109 states and 225 transitions. Second operand 6 states. [2020-12-22 11:12:12,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:12,129 INFO L93 Difference]: Finished difference Result 103 states and 211 transitions. [2020-12-22 11:12:12,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:12:12,129 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-22 11:12:12,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:12,130 INFO L225 Difference]: With dead ends: 103 [2020-12-22 11:12:12,130 INFO L226 Difference]: Without dead ends: 84 [2020-12-22 11:12:12,131 INFO L677 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 [2020-12-22 11:12:12,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-22 11:12:12,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-12-22 11:12:12,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-22 11:12:12,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 156 transitions. [2020-12-22 11:12:12,134 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 156 transitions. Word has length 13 [2020-12-22 11:12:12,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:12,135 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 156 transitions. [2020-12-22 11:12:12,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:12:12,135 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 156 transitions. [2020-12-22 11:12:12,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 11:12:12,136 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:12,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:12,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:12:12,136 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:12,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:12,137 INFO L82 PathProgramCache]: Analyzing trace with hash -523743225, now seen corresponding path program 1 times [2020-12-22 11:12:12,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:12,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154919075] [2020-12-22 11:12:12,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:12,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:12:12,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154919075] [2020-12-22 11:12:12,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:12,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:12:12,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32859001] [2020-12-22 11:12:12,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:12:12,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:12,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:12:12,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:12,190 INFO L87 Difference]: Start difference. First operand 76 states and 156 transitions. Second operand 4 states. [2020-12-22 11:12:12,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:12,227 INFO L93 Difference]: Finished difference Result 105 states and 209 transitions. [2020-12-22 11:12:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:12:12,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-22 11:12:12,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:12,228 INFO L225 Difference]: With dead ends: 105 [2020-12-22 11:12:12,229 INFO L226 Difference]: Without dead ends: 48 [2020-12-22 11:12:12,229 INFO L677 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 [2020-12-22 11:12:12,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-22 11:12:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-12-22 11:12:12,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-22 11:12:12,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 72 transitions. [2020-12-22 11:12:12,232 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 72 transitions. Word has length 16 [2020-12-22 11:12:12,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:12,232 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 72 transitions. [2020-12-22 11:12:12,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:12:12,232 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 72 transitions. [2020-12-22 11:12:12,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 11:12:12,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:12,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:12,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:12:12,233 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:12,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:12,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1399962537, now seen corresponding path program 2 times [2020-12-22 11:12:12,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:12,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940828727] [2020-12-22 11:12:12,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:12:12,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940828727] [2020-12-22 11:12:12,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:12,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:12:12,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801601171] [2020-12-22 11:12:12,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:12:12,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:12,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:12:12,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:12:12,295 INFO L87 Difference]: Start difference. First operand 44 states and 72 transitions. Second operand 5 states. [2020-12-22 11:12:12,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:12,321 INFO L93 Difference]: Finished difference Result 59 states and 96 transitions. [2020-12-22 11:12:12,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:12:12,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-22 11:12:12,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:12,325 INFO L225 Difference]: With dead ends: 59 [2020-12-22 11:12:12,325 INFO L226 Difference]: Without dead ends: 34 [2020-12-22 11:12:12,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:12:12,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-22 11:12:12,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-22 11:12:12,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 11:12:12,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-12-22 11:12:12,328 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 16 [2020-12-22 11:12:12,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:12,329 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-12-22 11:12:12,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:12:12,329 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-12-22 11:12:12,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 11:12:12,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:12,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:12,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:12:12,330 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:12,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:12,330 INFO L82 PathProgramCache]: Analyzing trace with hash 2077613865, now seen corresponding path program 3 times [2020-12-22 11:12:12,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:12,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058601632] [2020-12-22 11:12:12,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:12,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:12:12,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058601632] [2020-12-22 11:12:12,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:12,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:12:12,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717935080] [2020-12-22 11:12:12,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:12:12,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:12,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:12:12,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:12:12,387 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 5 states. [2020-12-22 11:12:12,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:12,401 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-12-22 11:12:12,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:12:12,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-22 11:12:12,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:12,402 INFO L225 Difference]: With dead ends: 33 [2020-12-22 11:12:12,402 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:12:12,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:12:12,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:12:12,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:12:12,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:12:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:12:12,403 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-22 11:12:12,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:12,404 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:12:12,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:12:12,404 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:12:12,404 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:12:12,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:12:12,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:12:12 BasicIcfg [2020-12-22 11:12:12,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:12:12,409 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:12:12,409 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:12:12,410 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:12:12,410 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:12:06" (3/4) ... [2020-12-22 11:12:12,414 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:12:12,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:12:12,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:12:12,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-22 11:12:12,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-22 11:12:12,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:12:12,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:12:12,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:12:12,471 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe026_tso.oepc.i-witness.graphml [2020-12-22 11:12:12,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:12:12,473 INFO L168 Benchmark]: Toolchain (without parser) took 7631.17 ms. Allocated memory was 152.0 MB in the beginning and 235.9 MB in the end (delta: 83.9 MB). Free memory was 126.7 MB in the beginning and 122.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 88.8 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:12,473 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 152.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:12:12,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.08 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 131.6 MB in the end (delta: -5.2 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:12,475 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.72 ms. Allocated memory is still 152.0 MB. Free memory was 131.6 MB in the beginning and 129.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:12,475 INFO L168 Benchmark]: Boogie Preprocessor took 68.01 ms. Allocated memory is still 152.0 MB. Free memory was 129.5 MB in the beginning and 128.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:12,476 INFO L168 Benchmark]: RCFGBuilder took 610.13 ms. Allocated memory is still 152.0 MB. Free memory was 128.5 MB in the beginning and 106.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:12,477 INFO L168 Benchmark]: TraceAbstraction took 6061.37 ms. Allocated memory was 152.0 MB in the beginning and 235.9 MB in the end (delta: 83.9 MB). Free memory was 106.4 MB in the beginning and 125.7 MB in the end (delta: -19.3 MB). Peak memory consumption was 65.7 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:12,477 INFO L168 Benchmark]: Witness Printer took 62.29 ms. Allocated memory is still 235.9 MB. Free memory was 125.7 MB in the beginning and 122.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:12,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 152.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 703.08 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 131.6 MB in the end (delta: -5.2 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 98.72 ms. Allocated memory is still 152.0 MB. Free memory was 131.6 MB in the beginning and 129.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.01 ms. Allocated memory is still 152.0 MB. Free memory was 129.5 MB in the beginning and 128.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 610.13 ms. Allocated memory is still 152.0 MB. Free memory was 128.5 MB in the beginning and 106.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6061.37 ms. Allocated memory was 152.0 MB in the beginning and 235.9 MB in the end (delta: 83.9 MB). Free memory was 106.4 MB in the beginning and 125.7 MB in the end (delta: -19.3 MB). Peak memory consumption was 65.7 MB. Max. memory is 8.0 GB. * Witness Printer took 62.29 ms. Allocated memory is still 235.9 MB. Free memory was 125.7 MB in the beginning and 122.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 769 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 45 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.9s, 81 PlacesBefore, 30 PlacesAfterwards, 73 TransitionsBefore, 20 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 2136 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 159 SDtfs, 150 SDslu, 199 SDs, 0 SdLazy, 128 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 80 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 5445 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...