/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:50:44,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:50:44,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:50:44,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:50:44,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:50:44,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:50:44,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:50:44,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:50:44,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:50:44,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:50:44,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:50:44,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:50:44,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:50:44,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:50:44,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:50:44,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:50:44,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:50:44,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:50:44,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:50:44,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:50:44,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:50:44,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:50:44,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:50:44,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:50:44,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 12:50:44,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 12:50:44,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 12:50:44,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 12:50:44,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 12:50:44,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 12:50:44,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:50:44,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:50:44,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:50:44,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:50:44,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:50:44,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:50:44,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:50:44,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:50:44,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:50:44,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:50:44,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:50:44,266 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:50:44,292 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:50:44,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:50:44,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:50:44,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:50:44,294 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:50:44,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:50:44,294 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:50:44,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:50:44,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:50:44,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:50:44,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:50:44,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:50:44,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:50:44,296 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:50:44,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:50:44,296 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:50:44,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:50:44,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:50:44,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:50:44,297 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:50:44,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:50:44,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:50:44,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:50:44,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:50:44,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:50:44,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:50:44,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:50:44,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:50:44,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:50:44,299 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:50:44,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:50:44,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:50:44,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:50:44,737 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:50:44,738 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:50:44,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-11-09 12:50:44,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1e757a33/075935f5663d464491ba37f990669d69/FLAGb63a8f0e6 [2020-11-09 12:50:45,601 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:50:45,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-11-09 12:50:45,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1e757a33/075935f5663d464491ba37f990669d69/FLAGb63a8f0e6 [2020-11-09 12:50:45,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1e757a33/075935f5663d464491ba37f990669d69 [2020-11-09 12:50:45,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:50:45,801 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:50:45,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:50:45,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:50:45,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:50:45,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:50:45" (1/1) ... [2020-11-09 12:50:45,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf77ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:45, skipping insertion in model container [2020-11-09 12:50:45,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:50:45" (1/1) ... [2020-11-09 12:50:45,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:50:45,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:50:46,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:50:46,463 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:50:46,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:50:46,701 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:50:46,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:46 WrapperNode [2020-11-09 12:50:46,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:50:46,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:50:46,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:50:46,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:50:46,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:46" (1/1) ... [2020-11-09 12:50:46,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:46" (1/1) ... [2020-11-09 12:50:46,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:50:46,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:50:46,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:50:46,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:50:46,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:46" (1/1) ... [2020-11-09 12:50:46,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:46" (1/1) ... [2020-11-09 12:50:46,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:46" (1/1) ... [2020-11-09 12:50:46,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:46" (1/1) ... [2020-11-09 12:50:46,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:46" (1/1) ... [2020-11-09 12:50:46,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:46" (1/1) ... [2020-11-09 12:50:46,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:46" (1/1) ... [2020-11-09 12:50:46,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:50:46,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:50:46,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:50:46,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:50:46,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:50:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:50:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:50:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:50:46,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:50:46,959 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 12:50:46,960 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 12:50:46,960 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 12:50:46,961 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 12:50:46,961 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 12:50:46,962 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 12:50:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:50:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:50:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:50:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:50:46,965 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:50:47,462 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:50:47,462 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 12:50:47,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:50:47 BoogieIcfgContainer [2020-11-09 12:50:47,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:50:47,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:50:47,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:50:47,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:50:47,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:50:45" (1/3) ... [2020-11-09 12:50:47,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533bd44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:50:47, skipping insertion in model container [2020-11-09 12:50:47,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:50:46" (2/3) ... [2020-11-09 12:50:47,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533bd44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:50:47, skipping insertion in model container [2020-11-09 12:50:47,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:50:47" (3/3) ... [2020-11-09 12:50:47,474 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2020-11-09 12:50:47,491 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:50:47,491 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:50:47,500 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:50:47,501 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:50:47,535 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,536 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,536 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,536 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,536 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,537 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,537 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,537 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,537 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,538 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,538 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,538 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,539 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,539 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,539 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,539 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,539 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,539 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,540 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,540 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,540 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,541 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,541 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,541 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,542 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,542 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,543 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,543 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,544 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,544 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,544 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,547 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,547 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,548 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,553 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,553 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,554 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,554 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,556 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,557 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:50:47,559 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:50:47,572 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 12:50:47,604 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:50:47,605 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:50:47,613 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:50:47,613 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:50:47,614 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:50:47,614 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:50:47,614 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:50:47,614 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:50:47,637 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:50:47,643 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 12:50:47,647 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 12:50:47,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 12:50:47,702 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 12:50:47,702 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:50:47,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 12:50:47,711 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 12:50:48,165 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-09 12:50:51,094 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-11-09 12:50:51,282 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-11-09 12:50:51,529 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 29 [2020-11-09 12:50:52,290 WARN L194 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 12:50:52,405 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:50:52,671 WARN L194 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 12:50:52,789 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 12:50:53,037 INFO L131 LiptonReduction]: Checked pairs total: 2926 [2020-11-09 12:50:53,037 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-09 12:50:53,045 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 12:50:53,074 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 12:50:53,076 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 12:50:53,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 12:50:53,086 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:53,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:53,087 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:53,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:53,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-11-09 12:50:53,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:53,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486102219] [2020-11-09 12:50:53,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:53,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:53,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486102219] [2020-11-09 12:50:53,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:53,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 12:50:53,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862058819] [2020-11-09 12:50:53,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 12:50:53,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:53,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 12:50:53,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 12:50:53,444 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 12:50:53,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:53,542 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-09 12:50:53,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 12:50:53,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 12:50:53,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:53,561 INFO L225 Difference]: With dead ends: 282 [2020-11-09 12:50:53,562 INFO L226 Difference]: Without dead ends: 218 [2020-11-09 12:50:53,563 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 [2020-11-09 12:50:53,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-09 12:50:53,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-09 12:50:53,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-09 12:50:53,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-09 12:50:53,636 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-09 12:50:53,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:53,637 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-09 12:50:53,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 12:50:53,637 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-09 12:50:53,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:50:53,639 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:53,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:53,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:50:53,640 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:53,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:53,641 INFO L82 PathProgramCache]: Analyzing trace with hash 319392730, now seen corresponding path program 1 times [2020-11-09 12:50:53,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:53,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707265950] [2020-11-09 12:50:53,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:53,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707265950] [2020-11-09 12:50:53,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:53,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:50:53,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127208626] [2020-11-09 12:50:53,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:50:53,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:53,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:50:53,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:50:53,740 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-11-09 12:50:53,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:53,783 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-11-09 12:50:53,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:50:53,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 12:50:53,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:53,787 INFO L225 Difference]: With dead ends: 278 [2020-11-09 12:50:53,787 INFO L226 Difference]: Without dead ends: 182 [2020-11-09 12:50:53,788 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 [2020-11-09 12:50:53,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-09 12:50:53,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-11-09 12:50:53,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-11-09 12:50:53,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-11-09 12:50:53,810 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-11-09 12:50:53,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:53,811 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-11-09 12:50:53,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:50:53,811 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-11-09 12:50:53,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 12:50:53,813 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:53,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:53,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:50:53,813 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:53,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:53,814 INFO L82 PathProgramCache]: Analyzing trace with hash 884125177, now seen corresponding path program 1 times [2020-11-09 12:50:53,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:53,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618253913] [2020-11-09 12:50:53,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:53,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618253913] [2020-11-09 12:50:53,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:53,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:50:53,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841994078] [2020-11-09 12:50:53,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:50:53,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:53,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:50:53,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:50:53,906 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 4 states. [2020-11-09 12:50:53,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:53,961 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-11-09 12:50:53,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:50:53,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-09 12:50:53,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:53,964 INFO L225 Difference]: With dead ends: 218 [2020-11-09 12:50:53,964 INFO L226 Difference]: Without dead ends: 146 [2020-11-09 12:50:53,965 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 [2020-11-09 12:50:53,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-09 12:50:53,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-09 12:50:53,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-09 12:50:53,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-09 12:50:53,995 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-11-09 12:50:53,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:53,996 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-09 12:50:53,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:50:53,997 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-09 12:50:53,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 12:50:53,999 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:53,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:53,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:50:53,999 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:54,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:54,006 INFO L82 PathProgramCache]: Analyzing trace with hash 266199867, now seen corresponding path program 1 times [2020-11-09 12:50:54,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:54,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918472267] [2020-11-09 12:50:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:54,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918472267] [2020-11-09 12:50:54,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:54,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:50:54,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001684384] [2020-11-09 12:50:54,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:50:54,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:54,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:50:54,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:50:54,171 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 4 states. [2020-11-09 12:50:54,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:54,226 INFO L93 Difference]: Finished difference Result 165 states and 377 transitions. [2020-11-09 12:50:54,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:50:54,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 12:50:54,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:54,231 INFO L225 Difference]: With dead ends: 165 [2020-11-09 12:50:54,232 INFO L226 Difference]: Without dead ends: 125 [2020-11-09 12:50:54,233 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 [2020-11-09 12:50:54,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-09 12:50:54,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-11-09 12:50:54,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-09 12:50:54,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 284 transitions. [2020-11-09 12:50:54,257 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 284 transitions. Word has length 11 [2020-11-09 12:50:54,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:54,257 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 284 transitions. [2020-11-09 12:50:54,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:50:54,257 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 284 transitions. [2020-11-09 12:50:54,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:50:54,262 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:54,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:54,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:50:54,263 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:54,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:54,267 INFO L82 PathProgramCache]: Analyzing trace with hash -297551950, now seen corresponding path program 1 times [2020-11-09 12:50:54,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:54,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367193818] [2020-11-09 12:50:54,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:54,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367193818] [2020-11-09 12:50:54,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:54,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:50:54,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454606981] [2020-11-09 12:50:54,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:50:54,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:54,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:50:54,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:50:54,436 INFO L87 Difference]: Start difference. First operand 125 states and 284 transitions. Second operand 5 states. [2020-11-09 12:50:54,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:54,491 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-11-09 12:50:54,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:50:54,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 12:50:54,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:54,493 INFO L225 Difference]: With dead ends: 122 [2020-11-09 12:50:54,493 INFO L226 Difference]: Without dead ends: 97 [2020-11-09 12:50:54,493 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 [2020-11-09 12:50:54,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-09 12:50:54,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-09 12:50:54,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-09 12:50:54,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-11-09 12:50:54,499 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-11-09 12:50:54,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:54,500 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-11-09 12:50:54,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:50:54,500 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-11-09 12:50:54,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 12:50:54,501 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:54,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:54,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:50:54,502 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:54,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:54,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1813731877, now seen corresponding path program 1 times [2020-11-09 12:50:54,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:54,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782385372] [2020-11-09 12:50:54,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:54,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:54,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782385372] [2020-11-09 12:50:54,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:54,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:50:54,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859763768] [2020-11-09 12:50:54,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:50:54,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:54,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:50:54,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:50:54,578 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 6 states. [2020-11-09 12:50:54,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:54,656 INFO L93 Difference]: Finished difference Result 92 states and 190 transitions. [2020-11-09 12:50:54,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:50:54,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-09 12:50:54,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:54,662 INFO L225 Difference]: With dead ends: 92 [2020-11-09 12:50:54,662 INFO L226 Difference]: Without dead ends: 84 [2020-11-09 12:50:54,662 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 [2020-11-09 12:50:54,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-09 12:50:54,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-11-09 12:50:54,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-09 12:50:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 176 transitions. [2020-11-09 12:50:54,668 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 176 transitions. Word has length 14 [2020-11-09 12:50:54,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:54,668 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 176 transitions. [2020-11-09 12:50:54,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:50:54,668 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 176 transitions. [2020-11-09 12:50:54,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 12:50:54,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:54,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:54,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:50:54,675 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:54,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:54,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1641541318, now seen corresponding path program 1 times [2020-11-09 12:50:54,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:54,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822285751] [2020-11-09 12:50:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:54,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822285751] [2020-11-09 12:50:54,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:54,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:50:54,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865460864] [2020-11-09 12:50:54,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:50:54,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:54,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:50:54,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:50:54,757 INFO L87 Difference]: Start difference. First operand 84 states and 176 transitions. Second operand 4 states. [2020-11-09 12:50:54,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:54,779 INFO L93 Difference]: Finished difference Result 97 states and 197 transitions. [2020-11-09 12:50:54,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:50:54,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 12:50:54,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:54,780 INFO L225 Difference]: With dead ends: 97 [2020-11-09 12:50:54,780 INFO L226 Difference]: Without dead ends: 36 [2020-11-09 12:50:54,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:50:54,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-09 12:50:54,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-09 12:50:54,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-09 12:50:54,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-11-09 12:50:54,784 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 17 [2020-11-09 12:50:54,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:54,784 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-11-09 12:50:54,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:50:54,785 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-11-09 12:50:54,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 12:50:54,786 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:50:54,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:50:54,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 12:50:54,786 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:50:54,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:50:54,787 INFO L82 PathProgramCache]: Analyzing trace with hash -2114303388, now seen corresponding path program 2 times [2020-11-09 12:50:54,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:50:54,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561128199] [2020-11-09 12:50:54,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:50:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:50:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:50:54,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561128199] [2020-11-09 12:50:54,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:50:54,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:50:54,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8402311] [2020-11-09 12:50:54,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:50:54,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:50:54,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:50:54,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:50:54,876 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-11-09 12:50:54,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:50:54,898 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-11-09 12:50:54,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 12:50:54,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 12:50:54,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:50:54,899 INFO L225 Difference]: With dead ends: 35 [2020-11-09 12:50:54,899 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:50:54,899 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 [2020-11-09 12:50:54,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:50:54,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:50:54,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:50:54,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:50:54,900 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 12:50:54,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:50:54,901 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:50:54,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:50:54,901 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:50:54,901 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:50:54,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 12:50:54,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:50:54 BasicIcfg [2020-11-09 12:50:54,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:50:54,907 INFO L168 Benchmark]: Toolchain (without parser) took 9110.24 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 124.0 MB in the beginning and 103.7 MB in the end (delta: 20.3 MB). Peak memory consumption was 87.9 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:54,908 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 122.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:50:54,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 895.95 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 130.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 32.2 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:54,910 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.57 ms. Allocated memory is still 151.0 MB. Free memory was 130.1 MB in the beginning and 128.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:54,910 INFO L168 Benchmark]: Boogie Preprocessor took 53.07 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 126.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:54,911 INFO L168 Benchmark]: RCFGBuilder took 612.47 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 104.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:54,912 INFO L168 Benchmark]: TraceAbstraction took 7438.51 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 103.8 MB in the beginning and 103.7 MB in the end (delta: 147.4 kB). Peak memory consumption was 67.3 MB. Max. memory is 8.0 GB. [2020-11-09 12:50:54,916 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 151.0 MB. Free memory is still 122.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 895.95 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 130.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 32.2 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 94.57 ms. Allocated memory is still 151.0 MB. Free memory was 130.1 MB in the beginning and 128.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.07 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 126.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 612.47 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 104.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7438.51 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 103.8 MB in the beginning and 103.7 MB in the end (delta: 147.4 kB). Peak memory consumption was 67.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1015 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.3s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: 160 SDtfs, 156 SDslu, 222 SDs, 0 SdLazy, 117 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2936 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...