/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/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:38:38,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:38:38,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:38:38,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:38:38,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:38:38,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:38:38,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:38:38,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:38:38,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:38:38,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:38:38,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:38:38,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:38:38,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:38:38,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:38:38,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:38:38,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:38:38,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:38:38,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:38:38,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:38:38,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:38:38,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:38:38,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:38:38,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:38:38,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:38:38,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:38:38,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:38:38,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:38:38,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:38:38,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:38:38,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:38:38,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:38:38,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:38:38,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:38:38,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:38:38,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:38:38,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:38:38,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:38:38,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:38:38,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:38:38,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:38:38,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:38:38,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 13:38:38,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:38:38,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:38:38,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:38:38,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:38:38,408 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:38:38,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:38:38,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:38:38,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:38:38,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:38:38,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:38:38,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:38:38,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:38:38,409 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:38:38,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:38:38,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:38:38,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:38:38,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:38:38,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:38:38,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:38:38,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:38:38,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:38:38,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:38:38,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:38:38,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:38:38,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:38:38,412 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:38:38,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:38:38,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:38:38,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:38:38,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:38:38,781 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:38:38,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe004_tso.opt.i [2020-12-23 13:38:38,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7fd2aefe1/8c737d94640b4a62a7807ca98dec307c/FLAG64646850e [2020-12-23 13:38:39,659 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:38:39,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe004_tso.opt.i [2020-12-23 13:38:39,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7fd2aefe1/8c737d94640b4a62a7807ca98dec307c/FLAG64646850e [2020-12-23 13:38:39,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7fd2aefe1/8c737d94640b4a62a7807ca98dec307c [2020-12-23 13:38:39,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:38:39,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:38:39,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:38:39,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:38:39,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:38:39,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:38:39" (1/1) ... [2020-12-23 13:38:39,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1082fff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:39, skipping insertion in model container [2020-12-23 13:38:39,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:38:39" (1/1) ... [2020-12-23 13:38:39,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:38:39,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:38:40,229 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe004_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:38:40,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:38:40,487 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:38:40,504 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe004_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:38:40,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:38:40,687 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:38:40,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:40 WrapperNode [2020-12-23 13:38:40,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:38:40,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:38:40,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:38:40,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:38:40,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:40" (1/1) ... [2020-12-23 13:38:40,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:40" (1/1) ... [2020-12-23 13:38:40,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:38:40,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:38:40,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:38:40,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:38:40,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:40" (1/1) ... [2020-12-23 13:38:40,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:40" (1/1) ... [2020-12-23 13:38:40,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:40" (1/1) ... [2020-12-23 13:38:40,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:40" (1/1) ... [2020-12-23 13:38:40,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:40" (1/1) ... [2020-12-23 13:38:40,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:40" (1/1) ... [2020-12-23 13:38:40,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:40" (1/1) ... [2020-12-23 13:38:40,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:38:40,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:38:40,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:38:40,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:38:40,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 13:38:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:38:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:38:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:38:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:38:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:38:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:38:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:38:40,889 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:38:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:38:40,890 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:38:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:38:40,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:38:40,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:38:40,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:38:40,895 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-23 13:38:41,280 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:38:41,280 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:38:41,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:38:41 BoogieIcfgContainer [2020-12-23 13:38:41,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:38:41,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:38:41,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:38:41,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:38:41,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:38:39" (1/3) ... [2020-12-23 13:38:41,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bea54fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:38:41, skipping insertion in model container [2020-12-23 13:38:41,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:38:40" (2/3) ... [2020-12-23 13:38:41,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bea54fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:38:41, skipping insertion in model container [2020-12-23 13:38:41,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:38:41" (3/3) ... [2020-12-23 13:38:41,291 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2020-12-23 13:38:41,298 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:38:41,299 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:38:41,304 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:38:41,305 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:38:41,337 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,337 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,337 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,338 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,338 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,338 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,338 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,338 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,340 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,340 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,340 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,340 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,340 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,341 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,341 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,343 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,343 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,344 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,344 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,344 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,344 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,345 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,345 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,345 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,345 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,348 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,348 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,353 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,354 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,354 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,354 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,356 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,356 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:38:41,358 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:38:41,379 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 13:38:41,406 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:38:41,407 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:38:41,407 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:38:41,407 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:38:41,407 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:38:41,407 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:38:41,407 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:38:41,408 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:38:41,426 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:38:41,429 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-23 13:38:41,433 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-23 13:38:41,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-23 13:38:41,522 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-23 13:38:41,522 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:38:41,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-23 13:38:41,532 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-23 13:38:44,365 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-23 13:38:44,681 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-12-23 13:38:44,791 INFO L131 LiptonReduction]: Checked pairs total: 2466 [2020-12-23 13:38:44,791 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-23 13:38:44,798 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-23 13:38:44,828 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-23 13:38:44,831 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-23 13:38:44,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:38:44,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:38:44,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:38:44,839 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:38:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:38:44,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1644080523, now seen corresponding path program 1 times [2020-12-23 13:38:44,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:38:44,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969423180] [2020-12-23 13:38:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:38:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:38:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:38:45,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969423180] [2020-12-23 13:38:45,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:38:45,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:38:45,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673077186] [2020-12-23 13:38:45,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 13:38:45,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:38:45,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 13:38:45,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:38:45,121 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-23 13:38:45,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:38:45,172 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-23 13:38:45,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 13:38:45,174 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 13:38:45,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:38:45,202 INFO L225 Difference]: With dead ends: 362 [2020-12-23 13:38:45,202 INFO L226 Difference]: Without dead ends: 298 [2020-12-23 13:38:45,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:38:45,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-23 13:38:45,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-23 13:38:45,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-23 13:38:45,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-23 13:38:45,299 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-23 13:38:45,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:38:45,300 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-23 13:38:45,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 13:38:45,300 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-23 13:38:45,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:38:45,301 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:38:45,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:38:45,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:38:45,302 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:38:45,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:38:45,303 INFO L82 PathProgramCache]: Analyzing trace with hash 573104580, now seen corresponding path program 1 times [2020-12-23 13:38:45,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:38:45,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013331197] [2020-12-23 13:38:45,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:38:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:38:45,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:38:45,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013331197] [2020-12-23 13:38:45,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:38:45,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:38:45,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896424052] [2020-12-23 13:38:45,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:38:45,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:38:45,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:38:45,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:38:45,499 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-23 13:38:45,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:38:45,592 INFO L93 Difference]: Finished difference Result 487 states and 1377 transitions. [2020-12-23 13:38:45,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:38:45,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 13:38:45,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:38:45,598 INFO L225 Difference]: With dead ends: 487 [2020-12-23 13:38:45,598 INFO L226 Difference]: Without dead ends: 312 [2020-12-23 13:38:45,599 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 [2020-12-23 13:38:45,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-12-23 13:38:45,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 262. [2020-12-23 13:38:45,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-23 13:38:45,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 672 transitions. [2020-12-23 13:38:45,647 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 672 transitions. Word has length 9 [2020-12-23 13:38:45,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:38:45,647 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 672 transitions. [2020-12-23 13:38:45,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:38:45,647 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 672 transitions. [2020-12-23 13:38:45,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:38:45,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:38:45,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:38:45,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:38:45,649 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:38:45,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:38:45,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1603605898, now seen corresponding path program 1 times [2020-12-23 13:38:45,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:38:45,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276530030] [2020-12-23 13:38:45,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:38:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:38:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:38:45,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276530030] [2020-12-23 13:38:45,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:38:45,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:38:45,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563254344] [2020-12-23 13:38:45,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:38:45,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:38:45,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:38:45,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:38:45,752 INFO L87 Difference]: Start difference. First operand 262 states and 672 transitions. Second operand 5 states. [2020-12-23 13:38:45,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:38:45,825 INFO L93 Difference]: Finished difference Result 343 states and 850 transitions. [2020-12-23 13:38:45,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:38:45,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:38:45,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:38:45,828 INFO L225 Difference]: With dead ends: 343 [2020-12-23 13:38:45,828 INFO L226 Difference]: Without dead ends: 248 [2020-12-23 13:38:45,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:38:45,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-12-23 13:38:45,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 212. [2020-12-23 13:38:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-12-23 13:38:45,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 529 transitions. [2020-12-23 13:38:45,841 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 529 transitions. Word has length 10 [2020-12-23 13:38:45,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:38:45,841 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 529 transitions. [2020-12-23 13:38:45,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:38:45,842 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 529 transitions. [2020-12-23 13:38:45,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:38:45,850 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:38:45,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:38:45,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:38:45,851 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:38:45,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:38:45,854 INFO L82 PathProgramCache]: Analyzing trace with hash 996952264, now seen corresponding path program 1 times [2020-12-23 13:38:45,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:38:45,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370647285] [2020-12-23 13:38:45,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:38:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:38:45,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:38:45,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370647285] [2020-12-23 13:38:45,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:38:45,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:38:45,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442421657] [2020-12-23 13:38:45,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:38:45,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:38:46,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:38:46,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:38:46,001 INFO L87 Difference]: Start difference. First operand 212 states and 529 transitions. Second operand 5 states. [2020-12-23 13:38:46,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:38:46,075 INFO L93 Difference]: Finished difference Result 270 states and 659 transitions. [2020-12-23 13:38:46,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:38:46,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 13:38:46,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:38:46,078 INFO L225 Difference]: With dead ends: 270 [2020-12-23 13:38:46,078 INFO L226 Difference]: Without dead ends: 226 [2020-12-23 13:38:46,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:38:46,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-23 13:38:46,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 188. [2020-12-23 13:38:46,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-12-23 13:38:46,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 456 transitions. [2020-12-23 13:38:46,086 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 456 transitions. Word has length 11 [2020-12-23 13:38:46,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:38:46,087 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 456 transitions. [2020-12-23 13:38:46,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:38:46,088 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 456 transitions. [2020-12-23 13:38:46,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:38:46,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:38:46,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:38:46,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:38:46,091 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:38:46,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:38:46,092 INFO L82 PathProgramCache]: Analyzing trace with hash 996954186, now seen corresponding path program 1 times [2020-12-23 13:38:46,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:38:46,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468927339] [2020-12-23 13:38:46,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:38:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:38:46,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:38:46,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468927339] [2020-12-23 13:38:46,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:38:46,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:38:46,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810980238] [2020-12-23 13:38:46,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:38:46,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:38:46,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:38:46,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:38:46,188 INFO L87 Difference]: Start difference. First operand 188 states and 456 transitions. Second operand 5 states. [2020-12-23 13:38:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:38:46,247 INFO L93 Difference]: Finished difference Result 248 states and 593 transitions. [2020-12-23 13:38:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:38:46,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 13:38:46,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:38:46,249 INFO L225 Difference]: With dead ends: 248 [2020-12-23 13:38:46,249 INFO L226 Difference]: Without dead ends: 204 [2020-12-23 13:38:46,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:38:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-12-23 13:38:46,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 164. [2020-12-23 13:38:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-12-23 13:38:46,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 383 transitions. [2020-12-23 13:38:46,256 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 383 transitions. Word has length 11 [2020-12-23 13:38:46,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:38:46,257 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 383 transitions. [2020-12-23 13:38:46,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:38:46,257 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 383 transitions. [2020-12-23 13:38:46,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:38:46,258 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:38:46,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:38:46,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:38:46,259 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:38:46,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:38:46,259 INFO L82 PathProgramCache]: Analyzing trace with hash -828726514, now seen corresponding path program 1 times [2020-12-23 13:38:46,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:38:46,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092378276] [2020-12-23 13:38:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:38:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:38:46,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:38:46,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092378276] [2020-12-23 13:38:46,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:38:46,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:38:46,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48911980] [2020-12-23 13:38:46,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:38:46,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:38:46,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:38:46,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:38:46,384 INFO L87 Difference]: Start difference. First operand 164 states and 383 transitions. Second operand 6 states. [2020-12-23 13:38:46,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:38:46,467 INFO L93 Difference]: Finished difference Result 297 states and 697 transitions. [2020-12-23 13:38:46,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 13:38:46,468 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-23 13:38:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:38:46,470 INFO L225 Difference]: With dead ends: 297 [2020-12-23 13:38:46,470 INFO L226 Difference]: Without dead ends: 216 [2020-12-23 13:38:46,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-23 13:38:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-12-23 13:38:46,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 146. [2020-12-23 13:38:46,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-23 13:38:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 344 transitions. [2020-12-23 13:38:46,477 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 344 transitions. Word has length 12 [2020-12-23 13:38:46,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:38:46,478 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 344 transitions. [2020-12-23 13:38:46,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:38:46,478 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 344 transitions. [2020-12-23 13:38:46,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:38:46,479 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:38:46,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:38:46,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:38:46,479 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:38:46,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:38:46,480 INFO L82 PathProgramCache]: Analyzing trace with hash 840731782, now seen corresponding path program 2 times [2020-12-23 13:38:46,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:38:46,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323180648] [2020-12-23 13:38:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:38:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:38:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:38:46,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323180648] [2020-12-23 13:38:46,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:38:46,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:38:46,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874078917] [2020-12-23 13:38:46,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:38:46,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:38:46,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:38:46,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:38:46,531 INFO L87 Difference]: Start difference. First operand 146 states and 344 transitions. Second operand 5 states. [2020-12-23 13:38:46,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:38:46,566 INFO L93 Difference]: Finished difference Result 179 states and 411 transitions. [2020-12-23 13:38:46,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:38:46,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:38:46,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:38:46,567 INFO L225 Difference]: With dead ends: 179 [2020-12-23 13:38:46,568 INFO L226 Difference]: Without dead ends: 142 [2020-12-23 13:38:46,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:38:46,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-23 13:38:46,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 118. [2020-12-23 13:38:46,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-23 13:38:46,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 267 transitions. [2020-12-23 13:38:46,573 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 267 transitions. Word has length 12 [2020-12-23 13:38:46,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:38:46,574 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 267 transitions. [2020-12-23 13:38:46,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:38:46,574 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 267 transitions. [2020-12-23 13:38:46,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:38:46,575 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:38:46,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:38:46,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:38:46,575 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:38:46,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:38:46,576 INFO L82 PathProgramCache]: Analyzing trace with hash 274334134, now seen corresponding path program 1 times [2020-12-23 13:38:46,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:38:46,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964942663] [2020-12-23 13:38:46,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:38:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:38:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:38:46,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964942663] [2020-12-23 13:38:46,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:38:46,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:38:46,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042338722] [2020-12-23 13:38:46,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:38:46,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:38:46,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:38:46,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:38:46,653 INFO L87 Difference]: Start difference. First operand 118 states and 267 transitions. Second operand 6 states. [2020-12-23 13:38:46,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:38:46,689 INFO L93 Difference]: Finished difference Result 144 states and 312 transitions. [2020-12-23 13:38:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:38:46,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-23 13:38:46,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:38:46,691 INFO L225 Difference]: With dead ends: 144 [2020-12-23 13:38:46,691 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 13:38:46,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:38:46,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 13:38:46,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-12-23 13:38:46,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-23 13:38:46,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 128 transitions. [2020-12-23 13:38:46,695 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 128 transitions. Word has length 13 [2020-12-23 13:38:46,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:38:46,695 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 128 transitions. [2020-12-23 13:38:46,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:38:46,695 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 128 transitions. [2020-12-23 13:38:46,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:38:46,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:38:46,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:38:46,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:38:46,696 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:38:46,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:38:46,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1006670732, now seen corresponding path program 1 times [2020-12-23 13:38:46,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:38:46,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037795512] [2020-12-23 13:38:46,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:38:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:38:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:38:46,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037795512] [2020-12-23 13:38:46,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:38:46,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:38:46,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462358718] [2020-12-23 13:38:46,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:38:46,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:38:46,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:38:46,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:38:46,739 INFO L87 Difference]: Start difference. First operand 64 states and 128 transitions. Second operand 4 states. [2020-12-23 13:38:46,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:38:46,757 INFO L93 Difference]: Finished difference Result 66 states and 117 transitions. [2020-12-23 13:38:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:38:46,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-23 13:38:46,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:38:46,758 INFO L225 Difference]: With dead ends: 66 [2020-12-23 13:38:46,758 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 13:38:46,758 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 [2020-12-23 13:38:46,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 13:38:46,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-23 13:38:46,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 13:38:46,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2020-12-23 13:38:46,761 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 14 [2020-12-23 13:38:46,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:38:46,761 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2020-12-23 13:38:46,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:38:46,762 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2020-12-23 13:38:46,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 13:38:46,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:38:46,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:38:46,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:38:46,763 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:38:46,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:38:46,763 INFO L82 PathProgramCache]: Analyzing trace with hash 48994457, now seen corresponding path program 1 times [2020-12-23 13:38:46,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:38:46,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955553356] [2020-12-23 13:38:46,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:38:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:38:46,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:38:46,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955553356] [2020-12-23 13:38:46,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:38:46,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:38:46,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491117026] [2020-12-23 13:38:46,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:38:46,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:38:46,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:38:46,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:38:46,808 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 5 states. [2020-12-23 13:38:46,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:38:46,832 INFO L93 Difference]: Finished difference Result 42 states and 64 transitions. [2020-12-23 13:38:46,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:38:46,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-23 13:38:46,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:38:46,833 INFO L225 Difference]: With dead ends: 42 [2020-12-23 13:38:46,833 INFO L226 Difference]: Without dead ends: 34 [2020-12-23 13:38:46,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:38:46,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-23 13:38:46,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-23 13:38:46,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 13:38:46,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2020-12-23 13:38:46,835 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 15 [2020-12-23 13:38:46,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:38:46,836 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2020-12-23 13:38:46,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:38:46,836 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2020-12-23 13:38:46,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:38:46,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:38:46,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:38:46,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:38:46,837 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:38:46,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:38:46,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1602840682, now seen corresponding path program 1 times [2020-12-23 13:38:46,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:38:46,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860720505] [2020-12-23 13:38:46,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:38:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:38:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:38:46,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860720505] [2020-12-23 13:38:46,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:38:46,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:38:46,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078983310] [2020-12-23 13:38:46,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:38:46,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:38:46,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:38:46,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:38:46,885 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 6 states. [2020-12-23 13:38:46,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:38:46,902 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2020-12-23 13:38:46,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:38:46,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-23 13:38:46,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:38:46,902 INFO L225 Difference]: With dead ends: 28 [2020-12-23 13:38:46,902 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:38:46,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:38:46,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:38:46,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:38:46,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:38:46,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:38:46,903 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-23 13:38:46,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:38:46,904 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:38:46,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:38:46,904 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:38:46,904 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:38:46,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 13:38:46,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:38:46 BasicIcfg [2020-12-23 13:38:46,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:38:46,909 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:38:46,909 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:38:46,909 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:38:46,910 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:38:41" (3/4) ... [2020-12-23 13:38:46,913 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:38:46,920 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:38:46,920 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:38:46,920 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:38:46,925 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 13:38:46,925 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:38:46,926 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:38:46,926 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:38:46,968 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe004_tso.opt.i-witness.graphml [2020-12-23 13:38:46,969 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:38:46,970 INFO L168 Benchmark]: Toolchain (without parser) took 7077.97 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 124.7 MB in the beginning and 144.9 MB in the end (delta: -20.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. [2020-12-23 13:38:46,971 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:38:46,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 793.74 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 128.6 MB in the end (delta: -4.1 MB). Peak memory consumption was 32.6 MB. Max. memory is 8.0 GB. [2020-12-23 13:38:46,972 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.09 ms. Allocated memory is still 151.0 MB. Free memory was 128.6 MB in the beginning and 126.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:38:46,972 INFO L168 Benchmark]: Boogie Preprocessor took 30.99 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 125.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:38:46,973 INFO L168 Benchmark]: RCFGBuilder took 506.60 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 103.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:38:46,978 INFO L168 Benchmark]: TraceAbstraction took 5624.45 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 102.9 MB in the beginning and 148.0 MB in the end (delta: -45.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:38:46,978 INFO L168 Benchmark]: Witness Printer took 59.81 ms. Allocated memory is still 218.1 MB. Free memory was 147.5 MB in the beginning and 144.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:38:46,982 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 793.74 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 128.6 MB in the end (delta: -4.1 MB). Peak memory consumption was 32.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 54.09 ms. Allocated memory is still 151.0 MB. Free memory was 128.6 MB in the beginning and 126.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.99 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 125.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 506.60 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 103.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5624.45 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 102.9 MB in the beginning and 148.0 MB in the end (delta: -45.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Witness Printer took 59.81 ms. Allocated memory is still 218.1 MB. Free memory was 147.5 MB in the beginning and 144.9 MB in the end (delta: 2.6 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 781 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 57 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.3s, 82 PlacesBefore, 32 PlacesAfterwards, 74 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2466 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 257 SDtfs, 278 SDslu, 414 SDs, 0 SdLazy, 180 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 258 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 6606 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...