/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/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:44:13,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:44:13,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:44:14,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:44:14,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:44:14,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:44:14,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:44:14,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:44:14,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:44:14,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:44:14,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:44:14,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:44:14,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:44:14,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:44:14,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:44:14,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:44:14,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:44:14,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:44:14,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:44:14,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:44:14,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:44:14,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:44:14,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:44:14,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:44:14,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:44:14,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:44:14,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:44:14,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:44:14,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:44:14,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:44:14,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:44:14,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:44:14,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:44:14,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:44:14,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:44:14,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:44:14,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:44:14,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:44:14,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:44:14,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:44:14,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:44:14,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 13:44:14,185 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:44:14,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:44:14,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:44:14,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:44:14,192 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:44:14,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:44:14,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:44:14,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:44:14,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:44:14,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:44:14,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:44:14,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:44:14,195 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:44:14,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:44:14,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:44:14,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:44:14,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:44:14,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:44:14,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:44:14,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:44:14,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:44:14,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:44:14,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:44:14,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:44:14,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:44:14,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:44:14,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:44:14,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:44:14,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:44:14,653 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:44:14,654 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:44:14,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe025_tso.oepc.i [2020-12-23 13:44:14,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fd785858b/d06749487e86415ba856082d98ba9a4f/FLAG8912463d6 [2020-12-23 13:44:15,564 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:44:15,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe025_tso.oepc.i [2020-12-23 13:44:15,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fd785858b/d06749487e86415ba856082d98ba9a4f/FLAG8912463d6 [2020-12-23 13:44:15,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fd785858b/d06749487e86415ba856082d98ba9a4f [2020-12-23 13:44:15,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:44:15,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:44:15,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:44:15,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:44:15,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:44:15,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:44:15" (1/1) ... [2020-12-23 13:44:15,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29798fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:15, skipping insertion in model container [2020-12-23 13:44:15,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:44:15" (1/1) ... [2020-12-23 13:44:15,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:44:15,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:44:16,174 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/safe025_tso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~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[~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[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:44:16,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:44:16,548 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:44:16,566 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe025_tso.oepc.i[950,963] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:44:16,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:44:16,769 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:44:16,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16 WrapperNode [2020-12-23 13:44:16,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:44:16,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:44:16,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:44:16,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:44:16,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:44:16,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:44:16,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:44:16,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:44:16,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... [2020-12-23 13:44:16,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:44:16,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:44:16,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:44:16,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:44:16,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:44:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:44:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:44:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:44:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:44:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:44:17,090 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:44:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:44:17,090 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:44:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:44:17,091 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:44:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:44:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:44:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:44:17,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:44:17,093 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-23 13:44:17,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:44:17,624 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:44:17,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:44:17 BoogieIcfgContainer [2020-12-23 13:44:17,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:44:17,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:44:17,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:44:17,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:44:17,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:44:15" (1/3) ... [2020-12-23 13:44:17,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5729164a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:44:17, skipping insertion in model container [2020-12-23 13:44:17,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:44:16" (2/3) ... [2020-12-23 13:44:17,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5729164a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:44:17, skipping insertion in model container [2020-12-23 13:44:17,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:44:17" (3/3) ... [2020-12-23 13:44:17,640 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2020-12-23 13:44:17,648 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:44:17,649 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:44:17,658 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:44:17,659 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:44:17,706 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,707 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,707 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,707 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,708 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,708 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,708 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,708 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,709 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,709 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,709 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,709 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,711 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,711 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,711 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,711 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,712 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,712 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,712 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,712 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,713 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,713 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,713 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,713 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,715 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,716 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,716 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,716 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,718 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,718 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,718 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,719 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,719 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,719 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,719 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,720 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,725 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,727 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,727 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,727 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,737 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,738 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,748 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,748 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:44:17,756 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:44:17,777 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 13:44:17,818 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:44:17,818 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:44:17,818 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:44:17,819 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:44:17,819 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:44:17,819 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:44:17,819 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:44:17,820 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:44:17,837 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:44:17,839 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-23 13:44:17,843 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-23 13:44:17,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-23 13:44:17,891 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-23 13:44:17,892 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:44:17,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-23 13:44:17,900 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-23 13:44:20,381 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 13:44:20,583 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-23 13:44:21,553 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 13:44:21,880 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 13:44:21,994 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-23 13:44:22,075 INFO L131 LiptonReduction]: Checked pairs total: 2371 [2020-12-23 13:44:22,075 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-12-23 13:44:22,085 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-12-23 13:44:22,164 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-23 13:44:22,167 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-23 13:44:22,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:44:22,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:22,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:22,177 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:22,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:22,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1684989787, now seen corresponding path program 1 times [2020-12-23 13:44:22,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:22,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141144925] [2020-12-23 13:44:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:22,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:22,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141144925] [2020-12-23 13:44:22,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:22,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-23 13:44:22,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660862734] [2020-12-23 13:44:22,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:44:22,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:22,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:44:22,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:44:22,628 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-23 13:44:22,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:22,693 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-12-23 13:44:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:44:22,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-23 13:44:22,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:22,726 INFO L225 Difference]: With dead ends: 282 [2020-12-23 13:44:22,727 INFO L226 Difference]: Without dead ends: 218 [2020-12-23 13:44:22,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:44:22,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-23 13:44:22,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-12-23 13:44:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-23 13:44:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-12-23 13:44:22,811 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-12-23 13:44:22,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:22,812 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-12-23 13:44:22,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:44:22,812 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-12-23 13:44:22,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:44:22,814 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:22,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:22,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:44:22,815 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:22,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:22,816 INFO L82 PathProgramCache]: Analyzing trace with hash 695075092, now seen corresponding path program 1 times [2020-12-23 13:44:22,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:22,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419321539] [2020-12-23 13:44:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:22,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419321539] [2020-12-23 13:44:22,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:22,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:44:22,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464483261] [2020-12-23 13:44:22,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:44:22,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:22,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:44:22,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:44:22,893 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-12-23 13:44:22,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:22,938 INFO L93 Difference]: Finished difference Result 312 states and 816 transitions. [2020-12-23 13:44:22,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:44:22,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-23 13:44:22,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:22,946 INFO L225 Difference]: With dead ends: 312 [2020-12-23 13:44:22,947 INFO L226 Difference]: Without dead ends: 296 [2020-12-23 13:44:22,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:44:22,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-12-23 13:44:22,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 262. [2020-12-23 13:44:22,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-23 13:44:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 703 transitions. [2020-12-23 13:44:23,008 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 703 transitions. Word has length 9 [2020-12-23 13:44:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:23,009 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 703 transitions. [2020-12-23 13:44:23,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:44:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 703 transitions. [2020-12-23 13:44:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:44:23,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:23,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:23,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:44:23,015 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:23,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:23,016 INFO L82 PathProgramCache]: Analyzing trace with hash 72489286, now seen corresponding path program 1 times [2020-12-23 13:44:23,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:23,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121890259] [2020-12-23 13:44:23,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:23,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121890259] [2020-12-23 13:44:23,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:23,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-23 13:44:23,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086766412] [2020-12-23 13:44:23,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:44:23,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:23,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:44:23,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:44:23,139 INFO L87 Difference]: Start difference. First operand 262 states and 703 transitions. Second operand 3 states. [2020-12-23 13:44:23,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:23,153 INFO L93 Difference]: Finished difference Result 254 states and 677 transitions. [2020-12-23 13:44:23,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:44:23,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-23 13:44:23,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:23,157 INFO L225 Difference]: With dead ends: 254 [2020-12-23 13:44:23,158 INFO L226 Difference]: Without dead ends: 254 [2020-12-23 13:44:23,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:44:23,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-12-23 13:44:23,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 238. [2020-12-23 13:44:23,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-12-23 13:44:23,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 641 transitions. [2020-12-23 13:44:23,172 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 641 transitions. Word has length 10 [2020-12-23 13:44:23,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:23,172 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 641 transitions. [2020-12-23 13:44:23,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:44:23,172 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 641 transitions. [2020-12-23 13:44:23,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:44:23,174 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:23,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:23,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:44:23,175 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:23,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:23,176 INFO L82 PathProgramCache]: Analyzing trace with hash 72490526, now seen corresponding path program 1 times [2020-12-23 13:44:23,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:23,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829964632] [2020-12-23 13:44:23,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:23,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829964632] [2020-12-23 13:44:23,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:23,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:44:23,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304017744] [2020-12-23 13:44:23,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:44:23,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:23,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:44:23,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:44:23,223 INFO L87 Difference]: Start difference. First operand 238 states and 641 transitions. Second operand 3 states. [2020-12-23 13:44:23,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:23,244 INFO L93 Difference]: Finished difference Result 226 states and 600 transitions. [2020-12-23 13:44:23,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:44:23,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-23 13:44:23,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:23,248 INFO L225 Difference]: With dead ends: 226 [2020-12-23 13:44:23,248 INFO L226 Difference]: Without dead ends: 226 [2020-12-23 13:44:23,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:44:23,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-23 13:44:23,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 202. [2020-12-23 13:44:23,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-23 13:44:23,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 530 transitions. [2020-12-23 13:44:23,263 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 530 transitions. Word has length 10 [2020-12-23 13:44:23,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:23,264 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 530 transitions. [2020-12-23 13:44:23,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:44:23,264 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 530 transitions. [2020-12-23 13:44:23,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:44:23,266 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:23,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:23,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:44:23,266 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:23,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:23,267 INFO L82 PathProgramCache]: Analyzing trace with hash -2036231076, now seen corresponding path program 1 times [2020-12-23 13:44:23,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:23,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187038773] [2020-12-23 13:44:23,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:23,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:23,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187038773] [2020-12-23 13:44:23,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:23,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:44:23,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791296715] [2020-12-23 13:44:23,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:23,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:23,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:23,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:23,329 INFO L87 Difference]: Start difference. First operand 202 states and 530 transitions. Second operand 4 states. [2020-12-23 13:44:23,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:23,356 INFO L93 Difference]: Finished difference Result 282 states and 728 transitions. [2020-12-23 13:44:23,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:44:23,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 13:44:23,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:23,358 INFO L225 Difference]: With dead ends: 282 [2020-12-23 13:44:23,358 INFO L226 Difference]: Without dead ends: 178 [2020-12-23 13:44:23,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:44:23,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-12-23 13:44:23,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-12-23 13:44:23,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-23 13:44:23,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 452 transitions. [2020-12-23 13:44:23,366 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 452 transitions. Word has length 11 [2020-12-23 13:44:23,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:23,366 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 452 transitions. [2020-12-23 13:44:23,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:23,366 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 452 transitions. [2020-12-23 13:44:23,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:44:23,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:23,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:23,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:44:23,368 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:23,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:23,369 INFO L82 PathProgramCache]: Analyzing trace with hash -2047800276, now seen corresponding path program 2 times [2020-12-23 13:44:23,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:23,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864487762] [2020-12-23 13:44:23,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:23,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:23,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864487762] [2020-12-23 13:44:23,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:23,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:44:23,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576244416] [2020-12-23 13:44:23,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:23,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:23,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:23,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:23,521 INFO L87 Difference]: Start difference. First operand 178 states and 452 transitions. Second operand 4 states. [2020-12-23 13:44:23,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:23,556 INFO L93 Difference]: Finished difference Result 206 states and 481 transitions. [2020-12-23 13:44:23,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:44:23,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 13:44:23,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:23,558 INFO L225 Difference]: With dead ends: 206 [2020-12-23 13:44:23,559 INFO L226 Difference]: Without dead ends: 150 [2020-12-23 13:44:23,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:44:23,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-23 13:44:23,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-12-23 13:44:23,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-23 13:44:23,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 344 transitions. [2020-12-23 13:44:23,565 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 344 transitions. Word has length 11 [2020-12-23 13:44:23,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:23,565 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 344 transitions. [2020-12-23 13:44:23,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:23,566 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 344 transitions. [2020-12-23 13:44:23,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:44:23,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:23,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:23,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:44:23,567 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:23,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:23,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1362454825, now seen corresponding path program 1 times [2020-12-23 13:44:23,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:23,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98459560] [2020-12-23 13:44:23,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:23,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:23,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98459560] [2020-12-23 13:44:23,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:23,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:44:23,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919090147] [2020-12-23 13:44:23,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:44:23,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:23,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:44:23,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:44:23,663 INFO L87 Difference]: Start difference. First operand 150 states and 344 transitions. Second operand 5 states. [2020-12-23 13:44:23,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:23,714 INFO L93 Difference]: Finished difference Result 149 states and 319 transitions. [2020-12-23 13:44:23,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:44:23,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:44:23,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:23,716 INFO L225 Difference]: With dead ends: 149 [2020-12-23 13:44:23,717 INFO L226 Difference]: Without dead ends: 115 [2020-12-23 13:44:23,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:44:23,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-23 13:44:23,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-12-23 13:44:23,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-23 13:44:23,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 242 transitions. [2020-12-23 13:44:23,726 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 242 transitions. Word has length 12 [2020-12-23 13:44:23,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:23,726 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 242 transitions. [2020-12-23 13:44:23,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:44:23,727 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 242 transitions. [2020-12-23 13:44:23,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:44:23,727 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:23,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:23,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:44:23,728 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:23,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:23,728 INFO L82 PathProgramCache]: Analyzing trace with hash -646579048, now seen corresponding path program 1 times [2020-12-23 13:44:23,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:23,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2431663] [2020-12-23 13:44:23,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:23,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:23,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2431663] [2020-12-23 13:44:23,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:23,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:44:23,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525280211] [2020-12-23 13:44:23,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:44:23,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:23,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:44:23,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:44:23,819 INFO L87 Difference]: Start difference. First operand 115 states and 242 transitions. Second operand 6 states. [2020-12-23 13:44:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:23,881 INFO L93 Difference]: Finished difference Result 110 states and 230 transitions. [2020-12-23 13:44:23,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:44:23,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-23 13:44:23,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:23,883 INFO L225 Difference]: With dead ends: 110 [2020-12-23 13:44:23,883 INFO L226 Difference]: Without dead ends: 92 [2020-12-23 13:44:23,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:44:23,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-23 13:44:23,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2020-12-23 13:44:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-23 13:44:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 185 transitions. [2020-12-23 13:44:23,888 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 185 transitions. Word has length 14 [2020-12-23 13:44:23,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:23,888 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 185 transitions. [2020-12-23 13:44:23,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:44:23,889 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 185 transitions. [2020-12-23 13:44:23,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 13:44:23,889 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:23,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:23,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:44:23,890 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:23,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:23,890 INFO L82 PathProgramCache]: Analyzing trace with hash 390859497, now seen corresponding path program 1 times [2020-12-23 13:44:23,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:23,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708159995] [2020-12-23 13:44:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:23,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708159995] [2020-12-23 13:44:23,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:23,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:44:23,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923592687] [2020-12-23 13:44:23,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:23,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:23,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:23,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:23,990 INFO L87 Difference]: Start difference. First operand 88 states and 185 transitions. Second operand 4 states. [2020-12-23 13:44:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:24,026 INFO L93 Difference]: Finished difference Result 117 states and 238 transitions. [2020-12-23 13:44:24,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:44:24,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-23 13:44:24,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:24,027 INFO L225 Difference]: With dead ends: 117 [2020-12-23 13:44:24,027 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 13:44:24,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:44:24,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 13:44:24,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2020-12-23 13:44:24,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 13:44:24,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 101 transitions. [2020-12-23 13:44:24,031 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 101 transitions. Word has length 17 [2020-12-23 13:44:24,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:24,031 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 101 transitions. [2020-12-23 13:44:24,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 101 transitions. [2020-12-23 13:44:24,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 13:44:24,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:24,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:24,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:44:24,049 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:24,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:24,049 INFO L82 PathProgramCache]: Analyzing trace with hash 321753769, now seen corresponding path program 2 times [2020-12-23 13:44:24,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:24,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679981943] [2020-12-23 13:44:24,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:24,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679981943] [2020-12-23 13:44:24,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:24,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:44:24,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577025872] [2020-12-23 13:44:24,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:24,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:24,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:24,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:24,129 INFO L87 Difference]: Start difference. First operand 56 states and 101 transitions. Second operand 4 states. [2020-12-23 13:44:24,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:24,148 INFO L93 Difference]: Finished difference Result 71 states and 125 transitions. [2020-12-23 13:44:24,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:44:24,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-23 13:44:24,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:24,149 INFO L225 Difference]: With dead ends: 71 [2020-12-23 13:44:24,150 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 13:44:24,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:44:24,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 13:44:24,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-23 13:44:24,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-23 13:44:24,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2020-12-23 13:44:24,152 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 41 transitions. Word has length 17 [2020-12-23 13:44:24,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:24,152 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 41 transitions. [2020-12-23 13:44:24,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:24,152 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 41 transitions. [2020-12-23 13:44:24,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 13:44:24,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:44:24,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:44:24,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:44:24,153 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:44:24,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:44:24,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1988858199, now seen corresponding path program 3 times [2020-12-23 13:44:24,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:44:24,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209017109] [2020-12-23 13:44:24,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:44:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:44:24,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:44:24,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209017109] [2020-12-23 13:44:24,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:44:24,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:44:24,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213564533] [2020-12-23 13:44:24,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:44:24,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:44:24,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:44:24,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:44:24,208 INFO L87 Difference]: Start difference. First operand 29 states and 41 transitions. Second operand 4 states. [2020-12-23 13:44:24,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:44:24,223 INFO L93 Difference]: Finished difference Result 28 states and 40 transitions. [2020-12-23 13:44:24,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:44:24,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-23 13:44:24,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:44:24,224 INFO L225 Difference]: With dead ends: 28 [2020-12-23 13:44:24,224 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:44:24,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:44:24,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:44:24,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:44:24,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:44:24,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:44:24,225 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-23 13:44:24,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:44:24,227 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:44:24,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:44:24,227 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:44:24,227 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:44:24,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 13:44:24,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:44:24 BasicIcfg [2020-12-23 13:44:24,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:44:24,232 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:44:24,232 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:44:24,232 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:44:24,233 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:44:17" (3/4) ... [2020-12-23 13:44:24,236 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:44:24,244 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:44:24,244 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:44:24,244 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:44:24,253 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 13:44:24,253 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:44:24,253 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:44:24,254 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:44:24,322 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe025_tso.oepc.i-witness.graphml [2020-12-23 13:44:24,322 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:44:24,327 INFO L168 Benchmark]: Toolchain (without parser) took 8454.77 ms. Allocated memory was 155.2 MB in the beginning and 234.9 MB in the end (delta: 79.7 MB). Free memory was 129.0 MB in the beginning and 191.8 MB in the end (delta: -62.8 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:24,327 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 155.2 MB. Free memory is still 129.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:44:24,328 INFO L168 Benchmark]: CACSL2BoogieTranslator took 901.01 ms. Allocated memory is still 155.2 MB. Free memory was 128.8 MB in the beginning and 97.8 MB in the end (delta: 31.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:24,331 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.13 ms. Allocated memory is still 155.2 MB. Free memory was 97.8 MB in the beginning and 95.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:24,331 INFO L168 Benchmark]: Boogie Preprocessor took 66.49 ms. Allocated memory is still 155.2 MB. Free memory was 95.7 MB in the beginning and 94.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:24,332 INFO L168 Benchmark]: RCFGBuilder took 684.41 ms. Allocated memory is still 155.2 MB. Free memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: -22.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:24,332 INFO L168 Benchmark]: TraceAbstraction took 6601.31 ms. Allocated memory was 155.2 MB in the beginning and 234.9 MB in the end (delta: 79.7 MB). Free memory was 116.8 MB in the beginning and 194.9 MB in the end (delta: -78.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:24,333 INFO L168 Benchmark]: Witness Printer took 90.10 ms. Allocated memory is still 234.9 MB. Free memory was 194.9 MB in the beginning and 191.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:44:24,339 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 155.2 MB. Free memory is still 129.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 901.01 ms. Allocated memory is still 155.2 MB. Free memory was 128.8 MB in the beginning and 97.8 MB in the end (delta: 31.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 102.13 ms. Allocated memory is still 155.2 MB. Free memory was 97.8 MB in the beginning and 95.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 66.49 ms. Allocated memory is still 155.2 MB. Free memory was 95.7 MB in the beginning and 94.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 684.41 ms. Allocated memory is still 155.2 MB. Free memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: -22.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6601.31 ms. Allocated memory was 155.2 MB in the beginning and 234.9 MB in the end (delta: 79.7 MB). Free memory was 116.8 MB in the beginning and 194.9 MB in the end (delta: -78.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Witness Printer took 90.10 ms. Allocated memory is still 234.9 MB. Free memory was 194.9 MB in the beginning and 191.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 831 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 64 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.2s, 83 PlacesBefore, 31 PlacesAfterwards, 75 TransitionsBefore, 21 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 2371 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.4s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 194 SDtfs, 225 SDslu, 183 SDs, 0 SdLazy, 101 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 82 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 4844 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...