/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/safe027_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:12:17,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:12:17,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:12:17,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:12:17,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:12:17,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:12:17,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:12:17,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:12:17,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:12:17,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:12:17,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:12:17,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:12:17,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:12:17,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:12:17,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:12:17,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:12:17,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:12:17,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:12:17,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:12:17,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:12:17,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:12:17,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:12:17,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:12:17,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:12:17,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 11:12:17,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:12:17,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:12:17,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:12:17,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:12:17,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:12:17,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:12:17,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:12:17,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:12:17,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:12:17,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:12:17,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:12:17,789 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:12:17,850 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:12:17,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:12:17,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:12:17,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:12:17,855 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:12:17,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:12:17,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:12:17,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:12:17,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:12:17,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:12:17,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:12:17,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:12:17,858 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:12:17,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:12:17,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:12:17,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:12:17,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:12:17,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:12:17,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:12:17,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:12:17,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:12:17,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:12:17,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:12:17,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:12:17,861 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:12:17,861 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:12:18,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:12:18,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:12:18,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:12:18,358 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:12:18,359 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:12:18,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i [2020-12-22 11:12:18,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d6666ddb/05713b0b5e154743972b6aede7166b8a/FLAGeee7f8fc9 [2020-12-22 11:12:19,273 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:12:19,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i [2020-12-22 11:12:19,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d6666ddb/05713b0b5e154743972b6aede7166b8a/FLAGeee7f8fc9 [2020-12-22 11:12:19,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d6666ddb/05713b0b5e154743972b6aede7166b8a [2020-12-22 11:12:19,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:12:19,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:12:19,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:12:19,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:12:19,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:12:19,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:12:19" (1/1) ... [2020-12-22 11:12:19,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b7d77a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:19, skipping insertion in model container [2020-12-22 11:12:19,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:12:19" (1/1) ... [2020-12-22 11:12:19,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:12:19,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:12:19,869 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/safe027_tso.oepc.i[950,963] [2020-12-22 11:12:20,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:12:20,158 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:12:20,177 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/safe027_tso.oepc.i[950,963] [2020-12-22 11:12:20,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:12:20,383 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:12:20,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:20 WrapperNode [2020-12-22 11:12:20,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:12:20,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:12:20,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:12:20,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:12:20,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:20" (1/1) ... [2020-12-22 11:12:20,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:20" (1/1) ... [2020-12-22 11:12:20,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:12:20,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:12:20,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:12:20,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:12:20,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:20" (1/1) ... [2020-12-22 11:12:20,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:20" (1/1) ... [2020-12-22 11:12:20,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:20" (1/1) ... [2020-12-22 11:12:20,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:20" (1/1) ... [2020-12-22 11:12:20,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:20" (1/1) ... [2020-12-22 11:12:20,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:20" (1/1) ... [2020-12-22 11:12:20,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:20" (1/1) ... [2020-12-22 11:12:20,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:12:20,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:12:20,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:12:20,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:12:20,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:20" (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 11:12:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:12:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-22 11:12:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:12:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:12:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-22 11:12:20,619 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-22 11:12:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-22 11:12:20,620 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-22 11:12:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-22 11:12:20,620 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-22 11:12:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-22 11:12:20,620 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-22 11:12:20,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:12:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-22 11:12:20,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:12:20,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:12:20,623 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 11:12:21,192 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:12:21,193 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-22 11:12:21,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:12:21 BoogieIcfgContainer [2020-12-22 11:12:21,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:12:21,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:12:21,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:12:21,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:12:21,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:12:19" (1/3) ... [2020-12-22 11:12:21,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61921888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:12:21, skipping insertion in model container [2020-12-22 11:12:21,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:12:20" (2/3) ... [2020-12-22 11:12:21,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61921888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:12:21, skipping insertion in model container [2020-12-22 11:12:21,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:12:21" (3/3) ... [2020-12-22 11:12:21,205 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_tso.oepc.i [2020-12-22 11:12:21,213 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 11:12:21,213 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:12:21,219 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 11:12:21,220 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 11:12:21,272 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,273 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,273 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,273 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,273 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,273 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,274 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,274 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,275 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,275 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,275 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,276 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,276 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,276 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,276 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,277 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,277 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,277 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,277 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,279 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,279 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,279 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,279 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,280 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,280 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,281 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,281 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,281 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,282 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,282 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,282 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,282 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,283 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,283 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,283 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,283 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,284 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,284 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,284 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,284 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,285 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,285 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,285 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,288 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,288 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,289 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,289 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,295 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,296 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,296 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,296 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,299 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,300 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,300 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,300 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,303 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,304 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,304 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,304 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 11:12:21,307 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 11:12:21,329 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 11:12:21,357 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:12:21,357 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:12:21,357 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:12:21,358 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:12:21,358 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:12:21,358 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:12:21,358 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:12:21,358 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:12:21,374 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 11:12:21,377 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 87 transitions, 194 flow [2020-12-22 11:12:21,381 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 87 transitions, 194 flow [2020-12-22 11:12:21,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 87 transitions, 194 flow [2020-12-22 11:12:21,438 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2020-12-22 11:12:21,439 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 11:12:21,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2020-12-22 11:12:21,449 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-22 11:12:23,799 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 11:12:23,967 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 11:12:25,597 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-22 11:12:25,729 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-22 11:12:26,036 WARN L197 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-22 11:12:26,177 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-22 11:12:26,470 INFO L131 LiptonReduction]: Checked pairs total: 3161 [2020-12-22 11:12:26,470 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-12-22 11:12:26,476 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-12-22 11:12:26,528 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-12-22 11:12:26,530 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-12-22 11:12:26,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:12:26,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:26,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:26,542 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:26,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:26,549 INFO L82 PathProgramCache]: Analyzing trace with hash -545263439, now seen corresponding path program 1 times [2020-12-22 11:12:26,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:26,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250243663] [2020-12-22 11:12:26,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:26,878 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 11:12:26,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250243663] [2020-12-22 11:12:26,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:26,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-22 11:12:26,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362984068] [2020-12-22 11:12:26,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:12:26,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:26,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:12:26,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:12:26,906 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-12-22 11:12:27,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:27,013 INFO L93 Difference]: Finished difference Result 832 states and 2781 transitions. [2020-12-22 11:12:27,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:12:27,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-22 11:12:27,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:27,054 INFO L225 Difference]: With dead ends: 832 [2020-12-22 11:12:27,054 INFO L226 Difference]: Without dead ends: 553 [2020-12-22 11:12:27,056 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 11:12:27,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-12-22 11:12:27,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2020-12-22 11:12:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-12-22 11:12:27,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1851 transitions. [2020-12-22 11:12:27,209 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1851 transitions. Word has length 10 [2020-12-22 11:12:27,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:27,210 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 1851 transitions. [2020-12-22 11:12:27,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:12:27,211 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1851 transitions. [2020-12-22 11:12:27,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:12:27,213 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:27,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:27,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:12:27,214 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:27,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:27,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1160874164, now seen corresponding path program 1 times [2020-12-22 11:12:27,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:27,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462531386] [2020-12-22 11:12:27,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:27,382 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 11:12:27,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462531386] [2020-12-22 11:12:27,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:27,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:12:27,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992827003] [2020-12-22 11:12:27,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:12:27,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:27,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:12:27,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:27,391 INFO L87 Difference]: Start difference. First operand 553 states and 1851 transitions. Second operand 4 states. [2020-12-22 11:12:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:27,417 INFO L93 Difference]: Finished difference Result 526 states and 1743 transitions. [2020-12-22 11:12:27,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:12:27,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 11:12:27,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:27,428 INFO L225 Difference]: With dead ends: 526 [2020-12-22 11:12:27,428 INFO L226 Difference]: Without dead ends: 526 [2020-12-22 11:12:27,429 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 11:12:27,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-12-22 11:12:27,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-12-22 11:12:27,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-12-22 11:12:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-12-22 11:12:27,465 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 11 [2020-12-22 11:12:27,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:27,466 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-12-22 11:12:27,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:12:27,466 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-12-22 11:12:27,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:12:27,473 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:27,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:27,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:12:27,474 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:27,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:27,475 INFO L82 PathProgramCache]: Analyzing trace with hash 276701328, now seen corresponding path program 1 times [2020-12-22 11:12:27,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:27,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462870106] [2020-12-22 11:12:27,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:27,537 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 11:12:27,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462870106] [2020-12-22 11:12:27,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:27,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:12:27,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109453256] [2020-12-22 11:12:27,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:12:27,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:27,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:12:27,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:27,545 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-12-22 11:12:27,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:27,572 INFO L93 Difference]: Finished difference Result 682 states and 2180 transitions. [2020-12-22 11:12:27,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:12:27,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 11:12:27,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:27,577 INFO L225 Difference]: With dead ends: 682 [2020-12-22 11:12:27,577 INFO L226 Difference]: Without dead ends: 394 [2020-12-22 11:12:27,578 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 11:12:27,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-12-22 11:12:27,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-12-22 11:12:27,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-22 11:12:27,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2020-12-22 11:12:27,594 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 11 [2020-12-22 11:12:27,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:27,594 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2020-12-22 11:12:27,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:12:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2020-12-22 11:12:27,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 11:12:27,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:27,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:27,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:12:27,596 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:27,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:27,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1446350552, now seen corresponding path program 1 times [2020-12-22 11:12:27,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:27,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069672898] [2020-12-22 11:12:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:27,644 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 11:12:27,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069672898] [2020-12-22 11:12:27,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:27,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-22 11:12:27,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524001375] [2020-12-22 11:12:27,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:12:27,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:27,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:12:27,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:12:27,647 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand 3 states. [2020-12-22 11:12:27,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:27,655 INFO L93 Difference]: Finished difference Result 376 states and 1155 transitions. [2020-12-22 11:12:27,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:12:27,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-22 11:12:27,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:27,659 INFO L225 Difference]: With dead ends: 376 [2020-12-22 11:12:27,659 INFO L226 Difference]: Without dead ends: 376 [2020-12-22 11:12:27,660 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 11:12:27,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-12-22 11:12:27,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2020-12-22 11:12:27,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-22 11:12:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1155 transitions. [2020-12-22 11:12:27,675 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1155 transitions. Word has length 12 [2020-12-22 11:12:27,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:27,676 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1155 transitions. [2020-12-22 11:12:27,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:12:27,676 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1155 transitions. [2020-12-22 11:12:27,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 11:12:27,677 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:27,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:27,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:12:27,677 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:27,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:27,678 INFO L82 PathProgramCache]: Analyzing trace with hash 367079963, now seen corresponding path program 1 times [2020-12-22 11:12:27,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:27,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728809664] [2020-12-22 11:12:27,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:27,779 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 11:12:27,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728809664] [2020-12-22 11:12:27,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:27,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:12:27,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010457058] [2020-12-22 11:12:27,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:12:27,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:27,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:12:27,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:12:27,782 INFO L87 Difference]: Start difference. First operand 376 states and 1155 transitions. Second operand 5 states. [2020-12-22 11:12:27,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:27,810 INFO L93 Difference]: Finished difference Result 466 states and 1398 transitions. [2020-12-22 11:12:27,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:12:27,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 11:12:27,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:27,813 INFO L225 Difference]: With dead ends: 466 [2020-12-22 11:12:27,813 INFO L226 Difference]: Without dead ends: 226 [2020-12-22 11:12:27,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:12:27,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-22 11:12:27,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-12-22 11:12:27,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-22 11:12:27,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 651 transitions. [2020-12-22 11:12:27,823 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 651 transitions. Word has length 13 [2020-12-22 11:12:27,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:27,823 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 651 transitions. [2020-12-22 11:12:27,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:12:27,824 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 651 transitions. [2020-12-22 11:12:27,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 11:12:27,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:27,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:27,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:12:27,825 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:27,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:27,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1626162599, now seen corresponding path program 1 times [2020-12-22 11:12:27,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:27,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246851554] [2020-12-22 11:12:27,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:27,900 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 11:12:27,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246851554] [2020-12-22 11:12:27,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:27,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:12:27,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692487229] [2020-12-22 11:12:27,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:12:27,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:27,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:12:27,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:27,904 INFO L87 Difference]: Start difference. First operand 226 states and 651 transitions. Second operand 4 states. [2020-12-22 11:12:27,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:27,953 INFO L93 Difference]: Finished difference Result 287 states and 773 transitions. [2020-12-22 11:12:27,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:12:27,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-22 11:12:27,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:27,956 INFO L225 Difference]: With dead ends: 287 [2020-12-22 11:12:27,956 INFO L226 Difference]: Without dead ends: 206 [2020-12-22 11:12:27,956 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 11:12:27,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-22 11:12:27,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-12-22 11:12:27,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-22 11:12:27,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 559 transitions. [2020-12-22 11:12:27,965 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 559 transitions. Word has length 14 [2020-12-22 11:12:27,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:27,965 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 559 transitions. [2020-12-22 11:12:27,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:12:27,965 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 559 transitions. [2020-12-22 11:12:27,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 11:12:27,966 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:27,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:27,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:12:27,967 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:27,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:27,967 INFO L82 PathProgramCache]: Analyzing trace with hash 242504516, now seen corresponding path program 1 times [2020-12-22 11:12:27,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:27,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51603828] [2020-12-22 11:12:27,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:28,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:12:28,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51603828] [2020-12-22 11:12:28,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:28,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:12:28,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926835768] [2020-12-22 11:12:28,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:12:28,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:28,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:12:28,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:12:28,028 INFO L87 Difference]: Start difference. First operand 206 states and 559 transitions. Second operand 5 states. [2020-12-22 11:12:28,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:28,075 INFO L93 Difference]: Finished difference Result 227 states and 565 transitions. [2020-12-22 11:12:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:12:28,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 11:12:28,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:28,077 INFO L225 Difference]: With dead ends: 227 [2020-12-22 11:12:28,077 INFO L226 Difference]: Without dead ends: 162 [2020-12-22 11:12:28,077 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 11:12:28,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-22 11:12:28,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-12-22 11:12:28,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-22 11:12:28,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 391 transitions. [2020-12-22 11:12:28,084 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 391 transitions. Word has length 15 [2020-12-22 11:12:28,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:28,084 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 391 transitions. [2020-12-22 11:12:28,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:12:28,084 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 391 transitions. [2020-12-22 11:12:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 11:12:28,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:28,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:28,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:12:28,086 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:28,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:28,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1073574531, now seen corresponding path program 1 times [2020-12-22 11:12:28,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:28,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913243421] [2020-12-22 11:12:28,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:12:28,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913243421] [2020-12-22 11:12:28,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:28,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:12:28,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477087287] [2020-12-22 11:12:28,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:12:28,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:28,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:12:28,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:12:28,148 INFO L87 Difference]: Start difference. First operand 162 states and 391 transitions. Second operand 6 states. [2020-12-22 11:12:28,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:28,206 INFO L93 Difference]: Finished difference Result 158 states and 360 transitions. [2020-12-22 11:12:28,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:12:28,206 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-22 11:12:28,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:28,207 INFO L225 Difference]: With dead ends: 158 [2020-12-22 11:12:28,208 INFO L226 Difference]: Without dead ends: 125 [2020-12-22 11:12:28,208 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 11:12:28,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-22 11:12:28,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-12-22 11:12:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-22 11:12:28,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 282 transitions. [2020-12-22 11:12:28,213 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 282 transitions. Word has length 16 [2020-12-22 11:12:28,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:28,214 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 282 transitions. [2020-12-22 11:12:28,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:12:28,214 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 282 transitions. [2020-12-22 11:12:28,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 11:12:28,215 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:28,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:28,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:12:28,215 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:28,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:28,216 INFO L82 PathProgramCache]: Analyzing trace with hash -678185987, now seen corresponding path program 1 times [2020-12-22 11:12:28,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:28,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547243263] [2020-12-22 11:12:28,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:28,261 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 11:12:28,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547243263] [2020-12-22 11:12:28,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:28,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:12:28,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469551889] [2020-12-22 11:12:28,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:12:28,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:28,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:12:28,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:28,264 INFO L87 Difference]: Start difference. First operand 125 states and 282 transitions. Second operand 4 states. [2020-12-22 11:12:28,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:28,283 INFO L93 Difference]: Finished difference Result 166 states and 368 transitions. [2020-12-22 11:12:28,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:12:28,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-22 11:12:28,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:28,285 INFO L225 Difference]: With dead ends: 166 [2020-12-22 11:12:28,285 INFO L226 Difference]: Without dead ends: 127 [2020-12-22 11:12:28,285 INFO L677 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 [2020-12-22 11:12:28,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-22 11:12:28,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-12-22 11:12:28,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-22 11:12:28,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-12-22 11:12:28,290 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-12-22 11:12:28,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:28,291 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-12-22 11:12:28,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:12:28,291 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-12-22 11:12:28,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 11:12:28,292 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:28,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:28,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:12:28,292 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:28,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:28,293 INFO L82 PathProgramCache]: Analyzing trace with hash -972384293, now seen corresponding path program 1 times [2020-12-22 11:12:28,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:28,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223045635] [2020-12-22 11:12:28,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:28,337 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 11:12:28,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223045635] [2020-12-22 11:12:28,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:28,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:12:28,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937196884] [2020-12-22 11:12:28,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:12:28,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:28,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:12:28,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:12:28,340 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 4 states. [2020-12-22 11:12:28,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:28,359 INFO L93 Difference]: Finished difference Result 142 states and 293 transitions. [2020-12-22 11:12:28,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:12:28,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-22 11:12:28,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:28,361 INFO L225 Difference]: With dead ends: 142 [2020-12-22 11:12:28,361 INFO L226 Difference]: Without dead ends: 87 [2020-12-22 11:12:28,361 INFO L677 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 [2020-12-22 11:12:28,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-22 11:12:28,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-12-22 11:12:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-22 11:12:28,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 160 transitions. [2020-12-22 11:12:28,365 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 160 transitions. Word has length 18 [2020-12-22 11:12:28,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:28,365 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 160 transitions. [2020-12-22 11:12:28,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:12:28,366 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 160 transitions. [2020-12-22 11:12:28,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 11:12:28,366 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:12:28,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:12:28,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 11:12:28,367 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:12:28,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:12:28,367 INFO L82 PathProgramCache]: Analyzing trace with hash -2140587643, now seen corresponding path program 2 times [2020-12-22 11:12:28,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:12:28,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142088940] [2020-12-22 11:12:28,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:12:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:12:28,428 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 11:12:28,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142088940] [2020-12-22 11:12:28,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:12:28,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:12:28,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279368580] [2020-12-22 11:12:28,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 11:12:28,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:12:28,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 11:12:28,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:12:28,431 INFO L87 Difference]: Start difference. First operand 86 states and 160 transitions. Second operand 7 states. [2020-12-22 11:12:28,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:12:28,468 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-12-22 11:12:28,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:12:28,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-22 11:12:28,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:12:28,469 INFO L225 Difference]: With dead ends: 81 [2020-12-22 11:12:28,469 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 11:12:28,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:12:28,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 11:12:28,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 11:12:28,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 11:12:28,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 11:12:28,471 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-22 11:12:28,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:12:28,471 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 11:12:28,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 11:12:28,471 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 11:12:28,471 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 11:12:28,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 11:12:28,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 11:12:28 BasicIcfg [2020-12-22 11:12:28,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 11:12:28,476 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 11:12:28,476 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 11:12:28,476 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 11:12:28,477 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:12:21" (3/4) ... [2020-12-22 11:12:28,480 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 11:12:28,488 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-22 11:12:28,488 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-22 11:12:28,488 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-22 11:12:28,488 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-22 11:12:28,494 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-22 11:12:28,494 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 11:12:28,494 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:12:28,494 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 11:12:28,539 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe027_tso.oepc.i-witness.graphml [2020-12-22 11:12:28,539 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 11:12:28,540 INFO L168 Benchmark]: Toolchain (without parser) took 8980.30 ms. Allocated memory was 163.6 MB in the beginning and 244.3 MB in the end (delta: 80.7 MB). Free memory was 137.6 MB in the beginning and 102.4 MB in the end (delta: 35.1 MB). Peak memory consumption was 117.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:28,541 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory was 135.1 MB in the beginning and 135.0 MB in the end (delta: 143.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 11:12:28,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 825.89 ms. Allocated memory is still 163.6 MB. Free memory was 137.4 MB in the beginning and 142.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:28,542 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.44 ms. Allocated memory is still 163.6 MB. Free memory was 142.9 MB in the beginning and 140.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:28,543 INFO L168 Benchmark]: Boogie Preprocessor took 35.67 ms. Allocated memory is still 163.6 MB. Free memory was 140.8 MB in the beginning and 139.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:28,544 INFO L168 Benchmark]: RCFGBuilder took 702.50 ms. Allocated memory is still 163.6 MB. Free memory was 139.8 MB in the beginning and 115.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:28,544 INFO L168 Benchmark]: TraceAbstraction took 7277.78 ms. Allocated memory was 163.6 MB in the beginning and 244.3 MB in the end (delta: 80.7 MB). Free memory was 115.2 MB in the beginning and 105.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 91.9 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:28,545 INFO L168 Benchmark]: Witness Printer took 63.06 ms. Allocated memory is still 244.3 MB. Free memory was 105.6 MB in the beginning and 102.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 11:12:28,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory was 135.1 MB in the beginning and 135.0 MB in the end (delta: 143.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 825.89 ms. Allocated memory is still 163.6 MB. Free memory was 137.4 MB in the beginning and 142.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 66.44 ms. Allocated memory is still 163.6 MB. Free memory was 142.9 MB in the beginning and 140.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.67 ms. Allocated memory is still 163.6 MB. Free memory was 140.8 MB in the beginning and 139.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 702.50 ms. Allocated memory is still 163.6 MB. Free memory was 139.8 MB in the beginning and 115.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7277.78 ms. Allocated memory was 163.6 MB in the beginning and 244.3 MB in the end (delta: 80.7 MB). Free memory was 115.2 MB in the beginning and 105.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 91.9 MB. Max. memory is 8.0 GB. * Witness Printer took 63.06 ms. Allocated memory is still 244.3 MB. Free memory was 105.6 MB in the beginning and 102.4 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 1210 VarBasedMoverChecksPositive, 66 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 53 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 112 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.0s, 98 PlacesBefore, 38 PlacesAfterwards, 87 TransitionsBefore, 25 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3161 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 5 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 236 SDtfs, 264 SDslu, 334 SDs, 0 SdLazy, 176 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 8297 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...