/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-wmm/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:31:29,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:31:29,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:31:29,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:31:29,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:31:29,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:31:29,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:31:29,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:31:29,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:31:29,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:31:29,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:31:29,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:31:29,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:31:29,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:31:29,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:31:29,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:31:29,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:31:29,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:31:29,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:31:29,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:31:29,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:31:29,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:31:29,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:31:29,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:31:29,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 23:31:29,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:31:29,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:31:29,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:31:29,220 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 23:31:29,249 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:31:29,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:31:29,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:31:29,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:31:29,252 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:31:29,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:31:29,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:31:29,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:31:29,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:31:29,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:31:29,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:31:29,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:31:29,254 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:31:29,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:31:29,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:31:29,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:31:29,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:31:29,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:31:29,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:31:29,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:31:29,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:31:29,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:31:29,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:31:29,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:31:29,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:31:29,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:31:29,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:31:29,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:31:29,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:31:29,683 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:31:29,684 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:31:29,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe004_tso.opt.i [2021-01-06 23:31:29,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7b11b7b03/1ebbdb6f337141c3b0d0a4b3530820d2/FLAG7387e6328 [2021-01-06 23:31:30,567 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:31:30,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe004_tso.opt.i [2021-01-06 23:31:30,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7b11b7b03/1ebbdb6f337141c3b0d0a4b3530820d2/FLAG7387e6328 [2021-01-06 23:31:30,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7b11b7b03/1ebbdb6f337141c3b0d0a4b3530820d2 [2021-01-06 23:31:30,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:31:30,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:31:30,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:31:30,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:31:30,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:31:30,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:31:30" (1/1) ... [2021-01-06 23:31:30,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525b90c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:31:30, skipping insertion in model container [2021-01-06 23:31:30,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:31:30" (1/1) ... [2021-01-06 23:31:30,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:31:30,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:31:31,086 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe004_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:31:31,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:31:31,396 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:31:31,429 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe004_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:31:31,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:31:31,662 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:31:31,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:31:31 WrapperNode [2021-01-06 23:31:31,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:31:31,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:31:31,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:31:31,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:31:31,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:31:31" (1/1) ... [2021-01-06 23:31:31,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:31:31" (1/1) ... [2021-01-06 23:31:31,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:31:31,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:31:31,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:31:31,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:31:31,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:31:31" (1/1) ... [2021-01-06 23:31:31,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:31:31" (1/1) ... [2021-01-06 23:31:31,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:31:31" (1/1) ... [2021-01-06 23:31:31,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:31:31" (1/1) ... [2021-01-06 23:31:31,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:31:31" (1/1) ... [2021-01-06 23:31:31,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:31:31" (1/1) ... [2021-01-06 23:31:31,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:31:31" (1/1) ... [2021-01-06 23:31:31,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:31:31,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:31:31,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:31:31,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:31:31,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:31:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:31:31,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:31:31,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:31:31,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:31:31,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:31:31,960 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:31:31,960 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:31:31,960 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:31:31,961 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:31:31,961 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-06 23:31:31,962 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-06 23:31:31,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:31:31,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:31:31,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:31:31,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:31:31,966 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-06 23:31:32,505 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:31:32,505 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:31:32,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:31:32 BoogieIcfgContainer [2021-01-06 23:31:32,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:31:32,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:31:32,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:31:32,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:31:32,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:31:30" (1/3) ... [2021-01-06 23:31:32,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2a166a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:31:32, skipping insertion in model container [2021-01-06 23:31:32,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:31:31" (2/3) ... [2021-01-06 23:31:32,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2a166a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:31:32, skipping insertion in model container [2021-01-06 23:31:32,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:31:32" (3/3) ... [2021-01-06 23:31:32,517 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2021-01-06 23:31:32,524 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:31:32,524 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:31:32,530 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:31:32,531 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:31:32,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,570 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,570 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,571 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,571 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,571 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,571 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,573 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,573 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,573 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,573 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,574 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,574 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,574 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,576 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,576 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,576 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,577 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,577 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,577 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,578 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,578 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,578 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,578 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,579 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,579 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,582 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,582 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,582 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,588 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,589 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,589 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,589 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,593 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,593 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,593 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,594 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:31:32,596 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:31:32,617 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-06 23:31:32,641 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:31:32,642 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:31:32,642 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:31:32,642 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:31:32,642 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:31:32,642 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:31:32,642 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:31:32,643 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:31:32,656 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:31:32,658 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2021-01-06 23:31:32,662 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2021-01-06 23:31:32,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-01-06 23:31:32,709 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-01-06 23:31:32,709 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:31:32,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-01-06 23:31:32,717 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-01-06 23:31:35,878 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-01-06 23:31:35,984 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-01-06 23:31:36,206 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-01-06 23:31:36,324 INFO L131 LiptonReduction]: Checked pairs total: 2466 [2021-01-06 23:31:36,324 INFO L133 LiptonReduction]: Total number of compositions: 61 [2021-01-06 23:31:36,331 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-01-06 23:31:36,363 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2021-01-06 23:31:36,365 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2021-01-06 23:31:36,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 23:31:36,373 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:31:36,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:31:36,375 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:31:36,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:31:36,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1644080523, now seen corresponding path program 1 times [2021-01-06 23:31:36,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:31:36,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248564347] [2021-01-06 23:31:36,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:31:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:31:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:31:36,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248564347] [2021-01-06 23:31:36,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:31:36,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:31:36,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196224248] [2021-01-06 23:31:36,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 23:31:36,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:31:36,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 23:31:36,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 23:31:36,603 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2021-01-06 23:31:36,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:31:36,646 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2021-01-06 23:31:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 23:31:36,649 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 23:31:36,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:31:36,681 INFO L225 Difference]: With dead ends: 362 [2021-01-06 23:31:36,681 INFO L226 Difference]: Without dead ends: 298 [2021-01-06 23:31:36,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 23:31:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-01-06 23:31:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-01-06 23:31:36,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2021-01-06 23:31:36,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-01-06 23:31:36,813 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-01-06 23:31:36,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:31:36,817 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-01-06 23:31:36,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 23:31:36,817 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-01-06 23:31:36,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 23:31:36,821 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:31:36,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:31:36,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:31:36,822 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:31:36,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:31:36,825 INFO L82 PathProgramCache]: Analyzing trace with hash 573104580, now seen corresponding path program 1 times [2021-01-06 23:31:36,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:31:36,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630435159] [2021-01-06 23:31:36,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:31:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:31:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:31:37,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630435159] [2021-01-06 23:31:37,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:31:37,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:31:37,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312200357] [2021-01-06 23:31:37,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:31:37,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:31:37,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:31:37,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:31:37,088 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2021-01-06 23:31:37,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:31:37,195 INFO L93 Difference]: Finished difference Result 487 states and 1377 transitions. [2021-01-06 23:31:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:31:37,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 23:31:37,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:31:37,218 INFO L225 Difference]: With dead ends: 487 [2021-01-06 23:31:37,219 INFO L226 Difference]: Without dead ends: 312 [2021-01-06 23:31:37,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:31:37,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-01-06 23:31:37,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 262. [2021-01-06 23:31:37,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2021-01-06 23:31:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 672 transitions. [2021-01-06 23:31:37,250 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 672 transitions. Word has length 9 [2021-01-06 23:31:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:31:37,250 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 672 transitions. [2021-01-06 23:31:37,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:31:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 672 transitions. [2021-01-06 23:31:37,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:31:37,255 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:31:37,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:31:37,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:31:37,255 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:31:37,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:31:37,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1603605898, now seen corresponding path program 1 times [2021-01-06 23:31:37,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:31:37,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229658251] [2021-01-06 23:31:37,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:31:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:31:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:31:37,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229658251] [2021-01-06 23:31:37,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:31:37,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:31:37,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180635174] [2021-01-06 23:31:37,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:31:37,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:31:37,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:31:37,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:31:37,421 INFO L87 Difference]: Start difference. First operand 262 states and 672 transitions. Second operand 5 states. [2021-01-06 23:31:37,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:31:37,493 INFO L93 Difference]: Finished difference Result 343 states and 850 transitions. [2021-01-06 23:31:37,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:31:37,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 23:31:37,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:31:37,496 INFO L225 Difference]: With dead ends: 343 [2021-01-06 23:31:37,496 INFO L226 Difference]: Without dead ends: 248 [2021-01-06 23:31:37,497 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 [2021-01-06 23:31:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-01-06 23:31:37,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 212. [2021-01-06 23:31:37,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2021-01-06 23:31:37,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 529 transitions. [2021-01-06 23:31:37,505 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 529 transitions. Word has length 10 [2021-01-06 23:31:37,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:31:37,505 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 529 transitions. [2021-01-06 23:31:37,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:31:37,505 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 529 transitions. [2021-01-06 23:31:37,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:31:37,507 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:31:37,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:31:37,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:31:37,507 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:31:37,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:31:37,508 INFO L82 PathProgramCache]: Analyzing trace with hash 996952264, now seen corresponding path program 1 times [2021-01-06 23:31:37,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:31:37,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091968000] [2021-01-06 23:31:37,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:31:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:31:37,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:31:37,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091968000] [2021-01-06 23:31:37,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:31:37,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:31:37,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731809852] [2021-01-06 23:31:37,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:31:37,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:31:37,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:31:37,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:31:37,591 INFO L87 Difference]: Start difference. First operand 212 states and 529 transitions. Second operand 5 states. [2021-01-06 23:31:37,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:31:37,676 INFO L93 Difference]: Finished difference Result 270 states and 659 transitions. [2021-01-06 23:31:37,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:31:37,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-06 23:31:37,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:31:37,679 INFO L225 Difference]: With dead ends: 270 [2021-01-06 23:31:37,679 INFO L226 Difference]: Without dead ends: 226 [2021-01-06 23:31:37,680 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 [2021-01-06 23:31:37,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-01-06 23:31:37,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 188. [2021-01-06 23:31:37,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2021-01-06 23:31:37,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 456 transitions. [2021-01-06 23:31:37,688 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 456 transitions. Word has length 11 [2021-01-06 23:31:37,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:31:37,688 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 456 transitions. [2021-01-06 23:31:37,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:31:37,689 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 456 transitions. [2021-01-06 23:31:37,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:31:37,691 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:31:37,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:31:37,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:31:37,692 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:31:37,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:31:37,697 INFO L82 PathProgramCache]: Analyzing trace with hash 996954186, now seen corresponding path program 1 times [2021-01-06 23:31:37,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:31:37,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622468130] [2021-01-06 23:31:37,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:31:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:31:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:31:37,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622468130] [2021-01-06 23:31:37,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:31:37,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:31:37,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865959522] [2021-01-06 23:31:37,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:31:37,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:31:37,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:31:37,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:31:37,818 INFO L87 Difference]: Start difference. First operand 188 states and 456 transitions. Second operand 5 states. [2021-01-06 23:31:37,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:31:37,892 INFO L93 Difference]: Finished difference Result 248 states and 593 transitions. [2021-01-06 23:31:37,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:31:37,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-06 23:31:37,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:31:37,895 INFO L225 Difference]: With dead ends: 248 [2021-01-06 23:31:37,895 INFO L226 Difference]: Without dead ends: 204 [2021-01-06 23:31:37,896 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 [2021-01-06 23:31:37,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-01-06 23:31:37,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 164. [2021-01-06 23:31:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2021-01-06 23:31:37,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 383 transitions. [2021-01-06 23:31:37,903 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 383 transitions. Word has length 11 [2021-01-06 23:31:37,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:31:37,904 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 383 transitions. [2021-01-06 23:31:37,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:31:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 383 transitions. [2021-01-06 23:31:37,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:31:37,907 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:31:37,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:31:37,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:31:37,908 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:31:37,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:31:37,908 INFO L82 PathProgramCache]: Analyzing trace with hash -828726514, now seen corresponding path program 1 times [2021-01-06 23:31:37,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:31:37,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376591321] [2021-01-06 23:31:37,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:31:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:31:38,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:31:38,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376591321] [2021-01-06 23:31:38,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:31:38,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 23:31:38,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154903187] [2021-01-06 23:31:38,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:31:38,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:31:38,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:31:38,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:31:38,020 INFO L87 Difference]: Start difference. First operand 164 states and 383 transitions. Second operand 6 states. [2021-01-06 23:31:38,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:31:38,130 INFO L93 Difference]: Finished difference Result 297 states and 697 transitions. [2021-01-06 23:31:38,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 23:31:38,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-01-06 23:31:38,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:31:38,133 INFO L225 Difference]: With dead ends: 297 [2021-01-06 23:31:38,133 INFO L226 Difference]: Without dead ends: 216 [2021-01-06 23:31:38,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-01-06 23:31:38,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-01-06 23:31:38,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 146. [2021-01-06 23:31:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-01-06 23:31:38,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 344 transitions. [2021-01-06 23:31:38,140 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 344 transitions. Word has length 12 [2021-01-06 23:31:38,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:31:38,141 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 344 transitions. [2021-01-06 23:31:38,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:31:38,141 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 344 transitions. [2021-01-06 23:31:38,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 23:31:38,142 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:31:38,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:31:38,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 23:31:38,142 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:31:38,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:31:38,143 INFO L82 PathProgramCache]: Analyzing trace with hash 840731782, now seen corresponding path program 2 times [2021-01-06 23:31:38,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:31:38,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433625034] [2021-01-06 23:31:38,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:31:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:31:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:31:38,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433625034] [2021-01-06 23:31:38,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:31:38,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:31:38,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253359389] [2021-01-06 23:31:38,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:31:38,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:31:38,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:31:38,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:31:38,199 INFO L87 Difference]: Start difference. First operand 146 states and 344 transitions. Second operand 5 states. [2021-01-06 23:31:38,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:31:38,265 INFO L93 Difference]: Finished difference Result 179 states and 411 transitions. [2021-01-06 23:31:38,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:31:38,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 23:31:38,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:31:38,267 INFO L225 Difference]: With dead ends: 179 [2021-01-06 23:31:38,267 INFO L226 Difference]: Without dead ends: 142 [2021-01-06 23:31:38,268 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 [2021-01-06 23:31:38,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-01-06 23:31:38,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 118. [2021-01-06 23:31:38,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2021-01-06 23:31:38,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 267 transitions. [2021-01-06 23:31:38,273 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 267 transitions. Word has length 12 [2021-01-06 23:31:38,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:31:38,274 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 267 transitions. [2021-01-06 23:31:38,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:31:38,274 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 267 transitions. [2021-01-06 23:31:38,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 23:31:38,275 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:31:38,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:31:38,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 23:31:38,275 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:31:38,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:31:38,276 INFO L82 PathProgramCache]: Analyzing trace with hash 274334134, now seen corresponding path program 1 times [2021-01-06 23:31:38,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:31:38,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425433262] [2021-01-06 23:31:38,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:31:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:31:38,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:31:38,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425433262] [2021-01-06 23:31:38,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:31:38,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:31:38,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195447490] [2021-01-06 23:31:38,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:31:38,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:31:38,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:31:38,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:31:38,356 INFO L87 Difference]: Start difference. First operand 118 states and 267 transitions. Second operand 6 states. [2021-01-06 23:31:38,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:31:38,409 INFO L93 Difference]: Finished difference Result 144 states and 312 transitions. [2021-01-06 23:31:38,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:31:38,410 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-01-06 23:31:38,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:31:38,411 INFO L225 Difference]: With dead ends: 144 [2021-01-06 23:31:38,411 INFO L226 Difference]: Without dead ends: 64 [2021-01-06 23:31:38,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-06 23:31:38,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-06 23:31:38,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-01-06 23:31:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-06 23:31:38,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 128 transitions. [2021-01-06 23:31:38,415 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 128 transitions. Word has length 13 [2021-01-06 23:31:38,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:31:38,415 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 128 transitions. [2021-01-06 23:31:38,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:31:38,415 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 128 transitions. [2021-01-06 23:31:38,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:31:38,416 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:31:38,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:31:38,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 23:31:38,416 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:31:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:31:38,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1006670732, now seen corresponding path program 1 times [2021-01-06 23:31:38,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:31:38,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461946617] [2021-01-06 23:31:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:31:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:31:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:31:38,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461946617] [2021-01-06 23:31:38,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:31:38,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:31:38,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347227575] [2021-01-06 23:31:38,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:31:38,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:31:38,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:31:38,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:31:38,461 INFO L87 Difference]: Start difference. First operand 64 states and 128 transitions. Second operand 4 states. [2021-01-06 23:31:38,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:31:38,486 INFO L93 Difference]: Finished difference Result 66 states and 117 transitions. [2021-01-06 23:31:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:31:38,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 23:31:38,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:31:38,488 INFO L225 Difference]: With dead ends: 66 [2021-01-06 23:31:38,488 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 23:31:38,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:31:38,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 23:31:38,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-01-06 23:31:38,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-06 23:31:38,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2021-01-06 23:31:38,491 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 14 [2021-01-06 23:31:38,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:31:38,491 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2021-01-06 23:31:38,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:31:38,491 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2021-01-06 23:31:38,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 23:31:38,492 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:31:38,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:31:38,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 23:31:38,492 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:31:38,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:31:38,493 INFO L82 PathProgramCache]: Analyzing trace with hash 48994457, now seen corresponding path program 1 times [2021-01-06 23:31:38,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:31:38,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514066977] [2021-01-06 23:31:38,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:31:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:31:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:31:38,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514066977] [2021-01-06 23:31:38,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:31:38,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:31:38,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395173666] [2021-01-06 23:31:38,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:31:38,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:31:38,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:31:38,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:31:38,540 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 5 states. [2021-01-06 23:31:38,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:31:38,571 INFO L93 Difference]: Finished difference Result 42 states and 64 transitions. [2021-01-06 23:31:38,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:31:38,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-06 23:31:38,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:31:38,573 INFO L225 Difference]: With dead ends: 42 [2021-01-06 23:31:38,573 INFO L226 Difference]: Without dead ends: 34 [2021-01-06 23:31:38,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:31:38,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-01-06 23:31:38,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-01-06 23:31:38,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-01-06 23:31:38,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2021-01-06 23:31:38,575 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 15 [2021-01-06 23:31:38,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:31:38,575 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2021-01-06 23:31:38,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:31:38,576 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2021-01-06 23:31:38,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 23:31:38,576 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:31:38,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:31:38,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 23:31:38,576 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:31:38,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:31:38,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1602840682, now seen corresponding path program 1 times [2021-01-06 23:31:38,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:31:38,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395449321] [2021-01-06 23:31:38,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:31:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:31:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 23:31:38,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395449321] [2021-01-06 23:31:38,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:31:38,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 23:31:38,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227499536] [2021-01-06 23:31:38,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:31:38,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:31:38,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:31:38,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:31:38,627 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 6 states. [2021-01-06 23:31:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:31:38,649 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2021-01-06 23:31:38,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:31:38,649 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-01-06 23:31:38,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:31:38,649 INFO L225 Difference]: With dead ends: 28 [2021-01-06 23:31:38,649 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:31:38,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-01-06 23:31:38,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:31:38,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:31:38,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:31:38,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:31:38,650 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-01-06 23:31:38,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:31:38,651 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:31:38,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:31:38,651 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:31:38,651 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:31:38,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 23:31:38,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:31:38 BasicIcfg [2021-01-06 23:31:38,655 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:31:38,656 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:31:38,656 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:31:38,656 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:31:38,657 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:31:32" (3/4) ... [2021-01-06 23:31:38,661 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:31:38,668 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:31:38,668 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:31:38,669 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-01-06 23:31:38,674 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-01-06 23:31:38,674 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:31:38,674 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:31:38,674 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:31:38,736 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe004_tso.opt.i-witness.graphml [2021-01-06 23:31:38,736 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:31:38,737 INFO L168 Benchmark]: Toolchain (without parser) took 7896.28 ms. Allocated memory was 151.0 MB in the beginning and 232.8 MB in the end (delta: 81.8 MB). Free memory was 125.2 MB in the beginning and 149.1 MB in the end (delta: -23.9 MB). Peak memory consumption was 59.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:31:38,741 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 123.1 MB in the end (delta: 96.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:31:38,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 820.01 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 126.6 MB in the end (delta: -1.7 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:31:38,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.24 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 124.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:31:38,743 INFO L168 Benchmark]: Boogie Preprocessor took 59.78 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 123.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:31:38,743 INFO L168 Benchmark]: RCFGBuilder took 687.54 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 101.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:31:38,748 INFO L168 Benchmark]: TraceAbstraction took 6145.75 ms. Allocated memory was 151.0 MB in the beginning and 232.8 MB in the end (delta: 81.8 MB). Free memory was 101.0 MB in the beginning and 151.7 MB in the end (delta: -50.8 MB). Peak memory consumption was 32.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:31:38,748 INFO L168 Benchmark]: Witness Printer took 80.24 ms. Allocated memory is still 232.8 MB. Free memory was 151.7 MB in the beginning and 149.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:31:38,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 123.1 MB in the end (delta: 96.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 820.01 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 126.6 MB in the end (delta: -1.7 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 90.24 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 124.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.78 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 123.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 687.54 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 101.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6145.75 ms. Allocated memory was 151.0 MB in the beginning and 232.8 MB in the end (delta: 81.8 MB). Free memory was 101.0 MB in the beginning and 151.7 MB in the end (delta: -50.8 MB). Peak memory consumption was 32.0 MB. Max. memory is 8.0 GB. * Witness Printer took 80.24 ms. Allocated memory is still 232.8 MB. Free memory was 151.7 MB in the beginning and 149.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 781 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 57 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 82 PlacesBefore, 32 PlacesAfterwards, 74 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2466 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 257 SDtfs, 278 SDslu, 414 SDs, 0 SdLazy, 180 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 258 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 6606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...