/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/safe019_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:35:20,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:35:20,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:35:20,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:35:20,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:35:20,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:35:20,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:35:20,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:35:20,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:35:20,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:35:20,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:35:20,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:35:20,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:35:20,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:35:20,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:35:20,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:35:20,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:35:20,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:35:20,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:35:20,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:35:20,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:35:20,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:35:20,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:35:20,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:35:20,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 23:35:21,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 23:35:21,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 23:35:21,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 23:35:21,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 23:35:21,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 23:35:21,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 23:35:21,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 23:35:21,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 23:35:21,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:35:21,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:35:21,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:35:21,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 23:35:21,054 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:35:21,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:35:21,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:35:21,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:35:21,058 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:35:21,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:35:21,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:35:21,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:35:21,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:35:21,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:35:21,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:35:21,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:35:21,060 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:35:21,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:35:21,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:35:21,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:35:21,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:35:21,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:35:21,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:35:21,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:35:21,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:35:21,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:35:21,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:35:21,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:35:21,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:35:21,063 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:35:21,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:35:21,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:35:21,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:35:21,638 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:35:21,639 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:35:21,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i [2021-01-06 23:35:21,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5dd4c28ec/b9f4e4fef82440c8827a37b9f1b20142/FLAG363fd156a [2021-01-06 23:35:22,751 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:35:22,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i [2021-01-06 23:35:22,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5dd4c28ec/b9f4e4fef82440c8827a37b9f1b20142/FLAG363fd156a [2021-01-06 23:35:22,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5dd4c28ec/b9f4e4fef82440c8827a37b9f1b20142 [2021-01-06 23:35:22,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:35:22,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:35:22,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:35:22,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:35:22,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:35:22,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:35:22" (1/1) ... [2021-01-06 23:35:22,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21048087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:22, skipping insertion in model container [2021-01-06 23:35:22,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:35:22" (1/1) ... [2021-01-06 23:35:22,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:35:23,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:35:23,319 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/safe019_pso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EBX~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[~__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[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~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[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:35:23,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:35:23,799 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:35:23,824 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:35:23,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:35:24,091 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:35:24,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:24 WrapperNode [2021-01-06 23:35:24,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:35:24,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:35:24,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:35:24,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:35:24,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:24" (1/1) ... [2021-01-06 23:35:24,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:24" (1/1) ... [2021-01-06 23:35:24,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:35:24,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:35:24,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:35:24,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:35:24,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:24" (1/1) ... [2021-01-06 23:35:24,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:24" (1/1) ... [2021-01-06 23:35:24,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:24" (1/1) ... [2021-01-06 23:35:24,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:24" (1/1) ... [2021-01-06 23:35:24,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:24" (1/1) ... [2021-01-06 23:35:24,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:24" (1/1) ... [2021-01-06 23:35:24,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:24" (1/1) ... [2021-01-06 23:35:24,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:35:24,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:35:24,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:35:24,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:35:24,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:24" (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 [2021-01-06 23:35:24,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:35:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:35:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:35:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:35:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:35:24,479 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:35:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:35:24,479 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:35:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-06 23:35:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-06 23:35:24,480 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-01-06 23:35:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-01-06 23:35:24,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:35:24,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:35:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:35:24,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:35:24,483 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-06 23:35:25,190 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:35:25,191 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:35:25,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:35:25 BoogieIcfgContainer [2021-01-06 23:35:25,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:35:25,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:35:25,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:35:25,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:35:25,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:35:22" (1/3) ... [2021-01-06 23:35:25,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11126bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:35:25, skipping insertion in model container [2021-01-06 23:35:25,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:35:24" (2/3) ... [2021-01-06 23:35:25,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11126bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:35:25, skipping insertion in model container [2021-01-06 23:35:25,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:35:25" (3/3) ... [2021-01-06 23:35:25,211 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_pso.opt.i [2021-01-06 23:35:25,222 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:35:25,223 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:35:25,230 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:35:25,231 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:35:25,288 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,288 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,289 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,289 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,289 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,289 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,290 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,290 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,290 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,291 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,291 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,292 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,293 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,294 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,294 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,295 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,295 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,299 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,299 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,300 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,300 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,301 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,302 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,302 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,303 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,303 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,304 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,304 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,304 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,304 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,305 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,305 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,305 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,306 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,306 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,306 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,306 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,311 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,312 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,313 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,323 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,323 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,324 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,324 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,329 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,330 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,330 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,330 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,333 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,334 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,334 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,334 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:35:25,337 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:35:25,362 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-01-06 23:35:25,391 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:35:25,391 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:35:25,392 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:35:25,392 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:35:25,392 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:35:25,392 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:35:25,392 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:35:25,392 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:35:25,412 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:35:25,416 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2021-01-06 23:35:25,420 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 86 transitions, 192 flow [2021-01-06 23:35:25,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2021-01-06 23:35:25,488 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2021-01-06 23:35:25,489 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:35:25,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-01-06 23:35:25,506 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2021-01-06 23:35:31,006 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-01-06 23:35:31,144 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-01-06 23:35:31,470 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-01-06 23:35:31,602 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-01-06 23:35:31,769 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-01-06 23:35:31,975 INFO L131 LiptonReduction]: Checked pairs total: 2978 [2021-01-06 23:35:31,975 INFO L133 LiptonReduction]: Total number of compositions: 68 [2021-01-06 23:35:31,990 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2021-01-06 23:35:32,064 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2021-01-06 23:35:32,067 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2021-01-06 23:35:32,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:35:32,086 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:32,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:32,089 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:32,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:32,102 INFO L82 PathProgramCache]: Analyzing trace with hash -36259415, now seen corresponding path program 1 times [2021-01-06 23:35:32,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:32,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256808831] [2021-01-06 23:35:32,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:35:32,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256808831] [2021-01-06 23:35:32,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:32,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-01-06 23:35:32,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516089407] [2021-01-06 23:35:32,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 23:35:32,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:32,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 23:35:32,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:35:32,693 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2021-01-06 23:35:32,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:32,823 INFO L93 Difference]: Finished difference Result 1072 states and 3535 transitions. [2021-01-06 23:35:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 23:35:32,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-01-06 23:35:32,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:32,892 INFO L225 Difference]: With dead ends: 1072 [2021-01-06 23:35:32,892 INFO L226 Difference]: Without dead ends: 745 [2021-01-06 23:35:32,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:35:32,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2021-01-06 23:35:33,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 679. [2021-01-06 23:35:33,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2021-01-06 23:35:33,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 2220 transitions. [2021-01-06 23:35:33,096 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 2220 transitions. Word has length 10 [2021-01-06 23:35:33,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:33,099 INFO L481 AbstractCegarLoop]: Abstraction has 679 states and 2220 transitions. [2021-01-06 23:35:33,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 23:35:33,099 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 2220 transitions. [2021-01-06 23:35:33,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:35:33,105 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:33,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:33,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:35:33,106 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:33,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:33,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1165014530, now seen corresponding path program 1 times [2021-01-06 23:35:33,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:33,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668452166] [2021-01-06 23:35:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:35:33,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668452166] [2021-01-06 23:35:33,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:33,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:35:33,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608772258] [2021-01-06 23:35:33,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:35:33,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:33,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:35:33,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:35:33,328 INFO L87 Difference]: Start difference. First operand 679 states and 2220 transitions. Second operand 4 states. [2021-01-06 23:35:33,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:33,441 INFO L93 Difference]: Finished difference Result 700 states and 2225 transitions. [2021-01-06 23:35:33,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:35:33,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 23:35:33,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:33,460 INFO L225 Difference]: With dead ends: 700 [2021-01-06 23:35:33,460 INFO L226 Difference]: Without dead ends: 700 [2021-01-06 23:35:33,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:35:33,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-01-06 23:35:33,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 652. [2021-01-06 23:35:33,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2021-01-06 23:35:33,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2109 transitions. [2021-01-06 23:35:33,534 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2109 transitions. Word has length 11 [2021-01-06 23:35:33,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:33,535 INFO L481 AbstractCegarLoop]: Abstraction has 652 states and 2109 transitions. [2021-01-06 23:35:33,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:35:33,535 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2109 transitions. [2021-01-06 23:35:33,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:35:33,548 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:33,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:33,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:35:33,551 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:33,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:33,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1124043458, now seen corresponding path program 1 times [2021-01-06 23:35:33,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:33,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901363576] [2021-01-06 23:35:33,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:35:33,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901363576] [2021-01-06 23:35:33,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:33,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:35:33,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922079772] [2021-01-06 23:35:33,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:35:33,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:33,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:35:33,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:35:33,703 INFO L87 Difference]: Start difference. First operand 652 states and 2109 transitions. Second operand 4 states. [2021-01-06 23:35:33,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:33,751 INFO L93 Difference]: Finished difference Result 664 states and 2099 transitions. [2021-01-06 23:35:33,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:35:33,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 23:35:33,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:33,761 INFO L225 Difference]: With dead ends: 664 [2021-01-06 23:35:33,761 INFO L226 Difference]: Without dead ends: 664 [2021-01-06 23:35:33,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:35:33,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-01-06 23:35:33,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 604. [2021-01-06 23:35:33,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2021-01-06 23:35:33,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1939 transitions. [2021-01-06 23:35:33,804 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1939 transitions. Word has length 11 [2021-01-06 23:35:33,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:33,805 INFO L481 AbstractCegarLoop]: Abstraction has 604 states and 1939 transitions. [2021-01-06 23:35:33,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:35:33,805 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1939 transitions. [2021-01-06 23:35:33,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:35:33,807 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:33,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:33,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:35:33,807 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:33,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:33,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1755710469, now seen corresponding path program 1 times [2021-01-06 23:35:33,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:33,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702293641] [2021-01-06 23:35:33,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:35:33,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702293641] [2021-01-06 23:35:33,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:33,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:35:33,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871859909] [2021-01-06 23:35:33,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:35:33,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:33,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:35:33,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:35:33,929 INFO L87 Difference]: Start difference. First operand 604 states and 1939 transitions. Second operand 5 states. [2021-01-06 23:35:34,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:34,002 INFO L93 Difference]: Finished difference Result 856 states and 2659 transitions. [2021-01-06 23:35:34,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:35:34,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:35:34,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:34,013 INFO L225 Difference]: With dead ends: 856 [2021-01-06 23:35:34,014 INFO L226 Difference]: Without dead ends: 472 [2021-01-06 23:35:34,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:35:34,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-01-06 23:35:34,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 436. [2021-01-06 23:35:34,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2021-01-06 23:35:34,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1375 transitions. [2021-01-06 23:35:34,046 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1375 transitions. Word has length 12 [2021-01-06 23:35:34,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:34,047 INFO L481 AbstractCegarLoop]: Abstraction has 436 states and 1375 transitions. [2021-01-06 23:35:34,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:35:34,047 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1375 transitions. [2021-01-06 23:35:34,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:35:34,048 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:34,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:34,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:35:34,049 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:34,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:34,050 INFO L82 PathProgramCache]: Analyzing trace with hash -485610361, now seen corresponding path program 2 times [2021-01-06 23:35:34,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:34,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355006653] [2021-01-06 23:35:34,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:34,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:35:34,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355006653] [2021-01-06 23:35:34,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:34,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-01-06 23:35:34,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568576839] [2021-01-06 23:35:34,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 23:35:34,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:34,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 23:35:34,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:35:34,165 INFO L87 Difference]: Start difference. First operand 436 states and 1375 transitions. Second operand 3 states. [2021-01-06 23:35:34,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:34,180 INFO L93 Difference]: Finished difference Result 418 states and 1306 transitions. [2021-01-06 23:35:34,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 23:35:34,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2021-01-06 23:35:34,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:34,185 INFO L225 Difference]: With dead ends: 418 [2021-01-06 23:35:34,185 INFO L226 Difference]: Without dead ends: 418 [2021-01-06 23:35:34,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 23:35:34,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-01-06 23:35:34,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2021-01-06 23:35:34,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2021-01-06 23:35:34,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1306 transitions. [2021-01-06 23:35:34,211 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1306 transitions. Word has length 12 [2021-01-06 23:35:34,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:34,211 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 1306 transitions. [2021-01-06 23:35:34,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 23:35:34,212 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1306 transitions. [2021-01-06 23:35:34,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 23:35:34,213 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:34,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:34,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:35:34,214 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:34,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:34,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1949399229, now seen corresponding path program 1 times [2021-01-06 23:35:34,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:34,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270112237] [2021-01-06 23:35:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:35:34,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270112237] [2021-01-06 23:35:34,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:34,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:35:34,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986435576] [2021-01-06 23:35:34,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:35:34,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:34,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:35:34,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:35:34,295 INFO L87 Difference]: Start difference. First operand 418 states and 1306 transitions. Second operand 4 states. [2021-01-06 23:35:34,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:34,343 INFO L93 Difference]: Finished difference Result 532 states and 1601 transitions. [2021-01-06 23:35:34,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:35:34,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-06 23:35:34,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:34,349 INFO L225 Difference]: With dead ends: 532 [2021-01-06 23:35:34,350 INFO L226 Difference]: Without dead ends: 412 [2021-01-06 23:35:34,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:35:34,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-01-06 23:35:34,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 376. [2021-01-06 23:35:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2021-01-06 23:35:34,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1137 transitions. [2021-01-06 23:35:34,373 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1137 transitions. Word has length 13 [2021-01-06 23:35:34,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:34,373 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1137 transitions. [2021-01-06 23:35:34,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:35:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1137 transitions. [2021-01-06 23:35:34,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 23:35:34,376 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:34,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:34,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 23:35:34,377 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:34,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:34,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1949381931, now seen corresponding path program 1 times [2021-01-06 23:35:34,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:34,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846993512] [2021-01-06 23:35:34,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:35:34,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846993512] [2021-01-06 23:35:34,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:34,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:35:34,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718457241] [2021-01-06 23:35:34,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:35:34,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:34,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:35:34,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:35:34,454 INFO L87 Difference]: Start difference. First operand 376 states and 1137 transitions. Second operand 4 states. [2021-01-06 23:35:34,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:34,509 INFO L93 Difference]: Finished difference Result 526 states and 1530 transitions. [2021-01-06 23:35:34,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 23:35:34,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-01-06 23:35:34,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:34,514 INFO L225 Difference]: With dead ends: 526 [2021-01-06 23:35:34,515 INFO L226 Difference]: Without dead ends: 274 [2021-01-06 23:35:34,515 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 [2021-01-06 23:35:34,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-01-06 23:35:34,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-01-06 23:35:34,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2021-01-06 23:35:34,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2021-01-06 23:35:34,534 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 13 [2021-01-06 23:35:34,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:34,535 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2021-01-06 23:35:34,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:35:34,535 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2021-01-06 23:35:34,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:35:34,536 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:34,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:34,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 23:35:34,537 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:34,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:34,538 INFO L82 PathProgramCache]: Analyzing trace with hash 2123867267, now seen corresponding path program 1 times [2021-01-06 23:35:34,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:34,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884840371] [2021-01-06 23:35:34,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:34,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:35:34,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884840371] [2021-01-06 23:35:34,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:34,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:35:34,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569260846] [2021-01-06 23:35:34,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:35:34,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:34,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:35:34,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:35:34,642 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand 4 states. [2021-01-06 23:35:34,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:34,719 INFO L93 Difference]: Finished difference Result 345 states and 911 transitions. [2021-01-06 23:35:34,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:35:34,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 23:35:34,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:34,723 INFO L225 Difference]: With dead ends: 345 [2021-01-06 23:35:34,723 INFO L226 Difference]: Without dead ends: 252 [2021-01-06 23:35:34,724 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 [2021-01-06 23:35:34,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-01-06 23:35:34,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-01-06 23:35:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2021-01-06 23:35:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 675 transitions. [2021-01-06 23:35:34,739 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 675 transitions. Word has length 14 [2021-01-06 23:35:34,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:34,739 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 675 transitions. [2021-01-06 23:35:34,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:35:34,739 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 675 transitions. [2021-01-06 23:35:34,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 23:35:34,741 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:34,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:34,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 23:35:34,741 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:34,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:34,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1422134941, now seen corresponding path program 1 times [2021-01-06 23:35:34,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:34,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750124070] [2021-01-06 23:35:34,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:34,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:35:34,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750124070] [2021-01-06 23:35:34,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:34,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:35:34,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746228188] [2021-01-06 23:35:34,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:35:34,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:34,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:35:34,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:35:34,837 INFO L87 Difference]: Start difference. First operand 252 states and 675 transitions. Second operand 5 states. [2021-01-06 23:35:34,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:34,992 INFO L93 Difference]: Finished difference Result 278 states and 685 transitions. [2021-01-06 23:35:34,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:35:35,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-06 23:35:35,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:35,004 INFO L225 Difference]: With dead ends: 278 [2021-01-06 23:35:35,004 INFO L226 Difference]: Without dead ends: 203 [2021-01-06 23:35:35,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:35:35,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-01-06 23:35:35,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2021-01-06 23:35:35,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2021-01-06 23:35:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 492 transitions. [2021-01-06 23:35:35,019 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 492 transitions. Word has length 15 [2021-01-06 23:35:35,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:35,020 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 492 transitions. [2021-01-06 23:35:35,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:35:35,020 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 492 transitions. [2021-01-06 23:35:35,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 23:35:35,021 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:35,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:35,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 23:35:35,022 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:35,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:35,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1099628631, now seen corresponding path program 1 times [2021-01-06 23:35:35,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:35,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067150480] [2021-01-06 23:35:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:35,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:35:35,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067150480] [2021-01-06 23:35:35,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:35,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:35:35,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508892400] [2021-01-06 23:35:35,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:35:35,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:35,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:35:35,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:35:35,201 INFO L87 Difference]: Start difference. First operand 203 states and 492 transitions. Second operand 6 states. [2021-01-06 23:35:35,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:35,339 INFO L93 Difference]: Finished difference Result 200 states and 461 transitions. [2021-01-06 23:35:35,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:35:35,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-01-06 23:35:35,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:35,343 INFO L225 Difference]: With dead ends: 200 [2021-01-06 23:35:35,343 INFO L226 Difference]: Without dead ends: 162 [2021-01-06 23:35:35,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:35:35,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-01-06 23:35:35,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-01-06 23:35:35,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2021-01-06 23:35:35,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2021-01-06 23:35:35,355 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 16 [2021-01-06 23:35:35,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:35,355 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2021-01-06 23:35:35,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:35:35,356 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2021-01-06 23:35:35,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 23:35:35,357 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:35,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:35,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 23:35:35,358 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:35,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:35,359 INFO L82 PathProgramCache]: Analyzing trace with hash 554738786, now seen corresponding path program 1 times [2021-01-06 23:35:35,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:35,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640809650] [2021-01-06 23:35:35,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:35:35,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640809650] [2021-01-06 23:35:35,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:35,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:35:35,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192249007] [2021-01-06 23:35:35,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:35:35,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:35,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:35:35,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:35:35,507 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand 5 states. [2021-01-06 23:35:35,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:35,566 INFO L93 Difference]: Finished difference Result 194 states and 439 transitions. [2021-01-06 23:35:35,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:35:35,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-01-06 23:35:35,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:35,571 INFO L225 Difference]: With dead ends: 194 [2021-01-06 23:35:35,571 INFO L226 Difference]: Without dead ends: 127 [2021-01-06 23:35:35,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:35:35,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-01-06 23:35:35,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-01-06 23:35:35,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-01-06 23:35:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2021-01-06 23:35:35,579 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2021-01-06 23:35:35,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:35,580 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2021-01-06 23:35:35,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:35:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2021-01-06 23:35:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 23:35:35,581 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:35,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:35,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 23:35:35,582 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:35,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:35,583 INFO L82 PathProgramCache]: Analyzing trace with hash -780782352, now seen corresponding path program 2 times [2021-01-06 23:35:35,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:35,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582220063] [2021-01-06 23:35:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:35:35,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582220063] [2021-01-06 23:35:35,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:35,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 23:35:35,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877735108] [2021-01-06 23:35:35,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 23:35:35,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:35,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 23:35:35,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:35:35,767 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 7 states. [2021-01-06 23:35:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:35,867 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2021-01-06 23:35:35,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 23:35:35,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-01-06 23:35:35,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:35,870 INFO L225 Difference]: With dead ends: 120 [2021-01-06 23:35:35,870 INFO L226 Difference]: Without dead ends: 71 [2021-01-06 23:35:35,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-06 23:35:35,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-01-06 23:35:35,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-01-06 23:35:35,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-01-06 23:35:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2021-01-06 23:35:35,875 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2021-01-06 23:35:35,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:35,875 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2021-01-06 23:35:35,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 23:35:35,876 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2021-01-06 23:35:35,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 23:35:35,876 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:35:35,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:35:35,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 23:35:35,877 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:35:35,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:35:35,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1285342776, now seen corresponding path program 1 times [2021-01-06 23:35:35,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:35:35,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824104364] [2021-01-06 23:35:35,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:35:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:35:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:35:35,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824104364] [2021-01-06 23:35:35,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:35:35,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:35:35,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341239311] [2021-01-06 23:35:35,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:35:35,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:35:35,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:35:35,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:35:35,943 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2021-01-06 23:35:35,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:35:35,976 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2021-01-06 23:35:35,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:35:35,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2021-01-06 23:35:35,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:35:35,978 INFO L225 Difference]: With dead ends: 70 [2021-01-06 23:35:35,978 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:35:35,978 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 [2021-01-06 23:35:35,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:35:35,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:35:35,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:35:35,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:35:35,980 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-01-06 23:35:35,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:35:35,980 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:35:35,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:35:35,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:35:35,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:35:35,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 23:35:35,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:35:35 BasicIcfg [2021-01-06 23:35:35,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:35:35,988 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:35:35,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:35:35,989 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:35:35,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:35:25" (3/4) ... [2021-01-06 23:35:35,996 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:35:36,009 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:35:36,009 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:35:36,009 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-01-06 23:35:36,010 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-01-06 23:35:36,018 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-01-06 23:35:36,018 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:35:36,019 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:35:36,019 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:35:36,107 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe019_pso.opt.i-witness.graphml [2021-01-06 23:35:36,107 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:35:36,114 INFO L168 Benchmark]: Toolchain (without parser) took 13156.46 ms. Allocated memory was 155.2 MB in the beginning and 245.4 MB in the end (delta: 90.2 MB). Free memory was 129.4 MB in the beginning and 141.7 MB in the end (delta: -12.2 MB). Peak memory consumption was 78.9 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:36,114 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 155.2 MB. Free memory is still 129.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:35:36,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1135.67 ms. Allocated memory is still 155.2 MB. Free memory was 129.1 MB in the beginning and 129.0 MB in the end (delta: 45.3 kB). Peak memory consumption was 25.9 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:36,115 INFO L168 Benchmark]: Boogie Procedure Inliner took 129.46 ms. Allocated memory is still 155.2 MB. Free memory was 129.0 MB in the beginning and 126.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:36,120 INFO L168 Benchmark]: Boogie Preprocessor took 78.91 ms. Allocated memory is still 155.2 MB. Free memory was 126.9 MB in the beginning and 125.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:36,120 INFO L168 Benchmark]: RCFGBuilder took 889.44 ms. Allocated memory is still 155.2 MB. Free memory was 125.8 MB in the beginning and 101.3 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:36,121 INFO L168 Benchmark]: TraceAbstraction took 10788.54 ms. Allocated memory was 155.2 MB in the beginning and 245.4 MB in the end (delta: 90.2 MB). Free memory was 100.7 MB in the beginning and 144.3 MB in the end (delta: -43.5 MB). Peak memory consumption was 47.7 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:36,122 INFO L168 Benchmark]: Witness Printer took 119.18 ms. Allocated memory is still 245.4 MB. Free memory was 144.3 MB in the beginning and 141.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:35:36,133 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 155.2 MB. Free memory is still 129.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1135.67 ms. Allocated memory is still 155.2 MB. Free memory was 129.1 MB in the beginning and 129.0 MB in the end (delta: 45.3 kB). Peak memory consumption was 25.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 129.46 ms. Allocated memory is still 155.2 MB. Free memory was 129.0 MB in the beginning and 126.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.91 ms. Allocated memory is still 155.2 MB. Free memory was 126.9 MB in the beginning and 125.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 889.44 ms. Allocated memory is still 155.2 MB. Free memory was 125.8 MB in the beginning and 101.3 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 10788.54 ms. Allocated memory was 155.2 MB in the beginning and 245.4 MB in the end (delta: 90.2 MB). Free memory was 100.7 MB in the beginning and 144.3 MB in the end (delta: -43.5 MB). Peak memory consumption was 47.7 MB. Max. memory is 8.0 GB. * Witness Printer took 119.18 ms. Allocated memory is still 245.4 MB. Free memory was 144.3 MB in the beginning and 141.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1172 VarBasedMoverChecksPositive, 55 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 38 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 1.0s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 6.5s, 97 PlacesBefore, 38 PlacesAfterwards, 86 TransitionsBefore, 25 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2978 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.5s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.6s, HoareTripleCheckerStatistics: 283 SDtfs, 313 SDslu, 410 SDs, 0 SdLazy, 234 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 248 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 10828 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...