/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/safe008_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 23:32:28,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 23:32:28,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 23:32:28,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 23:32:28,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 23:32:28,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 23:32:28,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 23:32:28,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 23:32:28,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 23:32:28,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 23:32:28,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 23:32:28,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 23:32:28,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 23:32:28,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 23:32:28,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 23:32:28,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 23:32:28,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 23:32:28,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 23:32:28,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 23:32:28,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 23:32:28,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 23:32:28,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 23:32:28,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 23:32:28,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 23:32:28,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 23:32:28,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 23:32:28,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 23:32:28,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 23:32:28,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 23:32:28,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-01-06 23:32:28,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 23:32:28,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 23:32:28,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 23:32:28,491 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 23:32:28,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 23:32:28,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 23:32:28,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 23:32:28,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 23:32:28,547 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 23:32:28,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 23:32:28,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 23:32:28,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 23:32:28,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 23:32:28,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 23:32:28,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 23:32:28,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 23:32:28,549 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 23:32:28,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 23:32:28,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 23:32:28,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 23:32:28,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 23:32:28,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 23:32:28,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 23:32:28,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 23:32:28,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 23:32:28,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 23:32:28,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 23:32:28,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 23:32:28,552 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 23:32:28,552 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 23:32:29,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 23:32:29,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 23:32:29,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 23:32:29,096 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 23:32:29,097 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 23:32:29,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i [2021-01-06 23:32:29,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2c4291cb3/7eab455b76014ed3a4c3462150a5a78b/FLAGb53932efc [2021-01-06 23:32:29,982 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 23:32:29,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i [2021-01-06 23:32:29,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2c4291cb3/7eab455b76014ed3a4c3462150a5a78b/FLAGb53932efc [2021-01-06 23:32:30,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2c4291cb3/7eab455b76014ed3a4c3462150a5a78b [2021-01-06 23:32:30,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 23:32:30,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 23:32:30,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 23:32:30,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 23:32:30,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 23:32:30,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:32:30" (1/1) ... [2021-01-06 23:32:30,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed84099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:30, skipping insertion in model container [2021-01-06 23:32:30,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:32:30" (1/1) ... [2021-01-06 23:32:30,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 23:32:30,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 23:32:30,441 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/safe008_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~z~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_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~z~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$tmp_guard1~0,GLOBAL] [2021-01-06 23:32:30,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:32:30,719 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 23:32:30,736 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~z~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~z~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2021-01-06 23:32:30,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 23:32:30,912 INFO L208 MainTranslator]: Completed translation [2021-01-06 23:32:30,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:30 WrapperNode [2021-01-06 23:32:30,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 23:32:30,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 23:32:30,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 23:32:30,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 23:32:30,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:30" (1/1) ... [2021-01-06 23:32:30,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:30" (1/1) ... [2021-01-06 23:32:30,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 23:32:30,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 23:32:30,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 23:32:30,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 23:32:30,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:30" (1/1) ... [2021-01-06 23:32:30,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:30" (1/1) ... [2021-01-06 23:32:31,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:30" (1/1) ... [2021-01-06 23:32:31,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:30" (1/1) ... [2021-01-06 23:32:31,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:30" (1/1) ... [2021-01-06 23:32:31,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:30" (1/1) ... [2021-01-06 23:32:31,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:30" (1/1) ... [2021-01-06 23:32:31,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 23:32:31,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 23:32:31,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 23:32:31,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 23:32:31,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:30" (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 23:32:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 23:32:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-06 23:32:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 23:32:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 23:32:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-06 23:32:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-06 23:32:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-06 23:32:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-06 23:32:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-06 23:32:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-06 23:32:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 23:32:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-06 23:32:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 23:32:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 23:32:31,143 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 23:32:31,531 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 23:32:31,532 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-01-06 23:32:31,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:32:31 BoogieIcfgContainer [2021-01-06 23:32:31,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 23:32:31,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 23:32:31,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 23:32:31,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 23:32:31,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:32:30" (1/3) ... [2021-01-06 23:32:31,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c03b38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:32:31, skipping insertion in model container [2021-01-06 23:32:31,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:32:30" (2/3) ... [2021-01-06 23:32:31,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c03b38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:32:31, skipping insertion in model container [2021-01-06 23:32:31,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:32:31" (3/3) ... [2021-01-06 23:32:31,545 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2021-01-06 23:32:31,553 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-06 23:32:31,553 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 23:32:31,559 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 23:32:31,560 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-06 23:32:31,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,624 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,626 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,627 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,627 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,627 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,628 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,628 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,631 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,631 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,632 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,632 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,633 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,633 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,633 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,634 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,637 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,638 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,638 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,638 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,642 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,643 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,643 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,643 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,644 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,644 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,645 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,645 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,649 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,649 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,652 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,653 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,653 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,654 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,659 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,659 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,660 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,660 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,674 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,674 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,683 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,684 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-06 23:32:31,691 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-06 23:32:31,731 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-06 23:32:31,773 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 23:32:31,775 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 23:32:31,775 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 23:32:31,775 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 23:32:31,776 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 23:32:31,776 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 23:32:31,776 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 23:32:31,777 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 23:32:31,801 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-01-06 23:32:31,804 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2021-01-06 23:32:31,810 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2021-01-06 23:32:31,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-01-06 23:32:31,908 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-01-06 23:32:31,908 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-01-06 23:32:31,922 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 49 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. [2021-01-06 23:32:31,928 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-01-06 23:32:34,538 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-01-06 23:32:34,818 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-01-06 23:32:34,910 INFO L131 LiptonReduction]: Checked pairs total: 2563 [2021-01-06 23:32:34,910 INFO L133 LiptonReduction]: Total number of compositions: 61 [2021-01-06 23:32:34,918 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-01-06 23:32:34,953 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2021-01-06 23:32:34,955 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2021-01-06 23:32:34,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 23:32:34,961 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:34,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:34,963 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:34,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:34,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1485857802, now seen corresponding path program 1 times [2021-01-06 23:32:34,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:34,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110043186] [2021-01-06 23:32:34,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:35,173 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 23:32:35,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110043186] [2021-01-06 23:32:35,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:35,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:32:35,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132730757] [2021-01-06 23:32:35,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 23:32:35,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:35,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 23:32:35,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 23:32:35,206 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2021-01-06 23:32:35,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:35,260 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2021-01-06 23:32:35,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 23:32:35,264 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 23:32:35,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:35,284 INFO L225 Difference]: With dead ends: 362 [2021-01-06 23:32:35,284 INFO L226 Difference]: Without dead ends: 298 [2021-01-06 23:32:35,285 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 23:32:35,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-01-06 23:32:35,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-01-06 23:32:35,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2021-01-06 23:32:35,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-01-06 23:32:35,379 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-01-06 23:32:35,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:35,383 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-01-06 23:32:35,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 23:32:35,383 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-01-06 23:32:35,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 23:32:35,385 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:35,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:35,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 23:32:35,390 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:35,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:35,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1183024898, now seen corresponding path program 1 times [2021-01-06 23:32:35,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:35,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156058197] [2021-01-06 23:32:35,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:35,600 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 23:32:35,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156058197] [2021-01-06 23:32:35,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:35,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 23:32:35,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099635503] [2021-01-06 23:32:35,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:32:35,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:35,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:32:35,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:32:35,608 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2021-01-06 23:32:35,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:35,667 INFO L93 Difference]: Finished difference Result 510 states and 1386 transitions. [2021-01-06 23:32:35,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:32:35,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 23:32:35,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:35,672 INFO L225 Difference]: With dead ends: 510 [2021-01-06 23:32:35,672 INFO L226 Difference]: Without dead ends: 380 [2021-01-06 23:32:35,673 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 23:32:35,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-01-06 23:32:35,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 320. [2021-01-06 23:32:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2021-01-06 23:32:35,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 900 transitions. [2021-01-06 23:32:35,724 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 900 transitions. Word has length 9 [2021-01-06 23:32:35,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:35,724 INFO L481 AbstractCegarLoop]: Abstraction has 320 states and 900 transitions. [2021-01-06 23:32:35,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:32:35,725 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 900 transitions. [2021-01-06 23:32:35,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:32:35,729 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:35,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:35,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 23:32:35,730 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:35,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:35,731 INFO L82 PathProgramCache]: Analyzing trace with hash 995647992, now seen corresponding path program 1 times [2021-01-06 23:32:35,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:35,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20156341] [2021-01-06 23:32:35,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:35,874 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 23:32:35,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20156341] [2021-01-06 23:32:35,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:35,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:32:35,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665973876] [2021-01-06 23:32:35,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:32:35,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:35,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:32:35,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:32:35,877 INFO L87 Difference]: Start difference. First operand 320 states and 900 transitions. Second operand 5 states. [2021-01-06 23:32:35,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:35,947 INFO L93 Difference]: Finished difference Result 428 states and 1125 transitions. [2021-01-06 23:32:35,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:32:35,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 23:32:35,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:35,952 INFO L225 Difference]: With dead ends: 428 [2021-01-06 23:32:35,952 INFO L226 Difference]: Without dead ends: 350 [2021-01-06 23:32:35,952 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 23:32:35,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-01-06 23:32:35,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 290. [2021-01-06 23:32:35,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2021-01-06 23:32:35,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 796 transitions. [2021-01-06 23:32:35,972 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 796 transitions. Word has length 10 [2021-01-06 23:32:35,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:35,973 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 796 transitions. [2021-01-06 23:32:35,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:32:35,973 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 796 transitions. [2021-01-06 23:32:35,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 23:32:35,975 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:35,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:35,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 23:32:35,976 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:35,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1980956361, now seen corresponding path program 1 times [2021-01-06 23:32:35,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:35,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187654634] [2021-01-06 23:32:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:36,057 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 23:32:36,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187654634] [2021-01-06 23:32:36,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:36,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:32:36,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911969661] [2021-01-06 23:32:36,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:32:36,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:36,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:32:36,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:32:36,065 INFO L87 Difference]: Start difference. First operand 290 states and 796 transitions. Second operand 5 states. [2021-01-06 23:32:36,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:36,131 INFO L93 Difference]: Finished difference Result 404 states and 1037 transitions. [2021-01-06 23:32:36,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:32:36,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-06 23:32:36,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:36,135 INFO L225 Difference]: With dead ends: 404 [2021-01-06 23:32:36,135 INFO L226 Difference]: Without dead ends: 326 [2021-01-06 23:32:36,136 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 23:32:36,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-01-06 23:32:36,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 278. [2021-01-06 23:32:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2021-01-06 23:32:36,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 754 transitions. [2021-01-06 23:32:36,150 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 754 transitions. Word has length 10 [2021-01-06 23:32:36,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:36,151 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 754 transitions. [2021-01-06 23:32:36,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:32:36,152 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 754 transitions. [2021-01-06 23:32:36,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:32:36,159 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:36,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:36,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 23:32:36,160 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:36,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:36,161 INFO L82 PathProgramCache]: Analyzing trace with hash 800294145, now seen corresponding path program 1 times [2021-01-06 23:32:36,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:36,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627959913] [2021-01-06 23:32:36,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:36,308 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 23:32:36,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627959913] [2021-01-06 23:32:36,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:36,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:32:36,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017193212] [2021-01-06 23:32:36,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:32:36,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:36,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:32:36,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:32:36,312 INFO L87 Difference]: Start difference. First operand 278 states and 754 transitions. Second operand 5 states. [2021-01-06 23:32:36,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:36,408 INFO L93 Difference]: Finished difference Result 419 states and 1082 transitions. [2021-01-06 23:32:36,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 23:32:36,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-06 23:32:36,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:36,411 INFO L225 Difference]: With dead ends: 419 [2021-01-06 23:32:36,412 INFO L226 Difference]: Without dead ends: 338 [2021-01-06 23:32:36,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-06 23:32:36,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-01-06 23:32:36,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 284. [2021-01-06 23:32:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2021-01-06 23:32:36,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 767 transitions. [2021-01-06 23:32:36,426 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 767 transitions. Word has length 11 [2021-01-06 23:32:36,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:36,426 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 767 transitions. [2021-01-06 23:32:36,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:32:36,426 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 767 transitions. [2021-01-06 23:32:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 23:32:36,430 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:36,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:36,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 23:32:36,431 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:36,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:36,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1280130465, now seen corresponding path program 2 times [2021-01-06 23:32:36,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:36,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259611349] [2021-01-06 23:32:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:36,576 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 23:32:36,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259611349] [2021-01-06 23:32:36,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:36,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:32:36,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446007020] [2021-01-06 23:32:36,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:32:36,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:36,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:32:36,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:32:36,584 INFO L87 Difference]: Start difference. First operand 284 states and 767 transitions. Second operand 6 states. [2021-01-06 23:32:36,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:36,637 INFO L93 Difference]: Finished difference Result 350 states and 895 transitions. [2021-01-06 23:32:36,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 23:32:36,637 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-06 23:32:36,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:36,639 INFO L225 Difference]: With dead ends: 350 [2021-01-06 23:32:36,640 INFO L226 Difference]: Without dead ends: 182 [2021-01-06 23:32:36,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 23:32:36,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-01-06 23:32:36,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 158. [2021-01-06 23:32:36,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2021-01-06 23:32:36,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 382 transitions. [2021-01-06 23:32:36,648 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 382 transitions. Word has length 11 [2021-01-06 23:32:36,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:36,648 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 382 transitions. [2021-01-06 23:32:36,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:32:36,650 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 382 transitions. [2021-01-06 23:32:36,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 23:32:36,651 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:36,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:36,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 23:32:36,652 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:36,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1283691266, now seen corresponding path program 1 times [2021-01-06 23:32:36,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:36,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285151462] [2021-01-06 23:32:36,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:36,740 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 23:32:36,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285151462] [2021-01-06 23:32:36,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:36,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:32:36,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808503580] [2021-01-06 23:32:36,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:32:36,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:36,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:32:36,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:32:36,744 INFO L87 Difference]: Start difference. First operand 158 states and 382 transitions. Second operand 5 states. [2021-01-06 23:32:36,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:36,790 INFO L93 Difference]: Finished difference Result 196 states and 453 transitions. [2021-01-06 23:32:36,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:32:36,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 23:32:36,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:36,792 INFO L225 Difference]: With dead ends: 196 [2021-01-06 23:32:36,792 INFO L226 Difference]: Without dead ends: 82 [2021-01-06 23:32:36,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 23:32:36,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-01-06 23:32:36,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-01-06 23:32:36,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-01-06 23:32:36,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 170 transitions. [2021-01-06 23:32:36,797 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 170 transitions. Word has length 13 [2021-01-06 23:32:36,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:36,798 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 170 transitions. [2021-01-06 23:32:36,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:32:36,798 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 170 transitions. [2021-01-06 23:32:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 23:32:36,799 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:36,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:36,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 23:32:36,799 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:36,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1802492984, now seen corresponding path program 1 times [2021-01-06 23:32:36,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:36,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639431031] [2021-01-06 23:32:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:36,851 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 23:32:36,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639431031] [2021-01-06 23:32:36,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:36,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 23:32:36,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974507982] [2021-01-06 23:32:36,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 23:32:36,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:36,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 23:32:36,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 23:32:36,854 INFO L87 Difference]: Start difference. First operand 82 states and 170 transitions. Second operand 4 states. [2021-01-06 23:32:36,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:36,879 INFO L93 Difference]: Finished difference Result 84 states and 159 transitions. [2021-01-06 23:32:36,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 23:32:36,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-01-06 23:32:36,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:36,881 INFO L225 Difference]: With dead ends: 84 [2021-01-06 23:32:36,881 INFO L226 Difference]: Without dead ends: 70 [2021-01-06 23:32:36,881 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 23:32:36,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-01-06 23:32:36,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-01-06 23:32:36,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-01-06 23:32:36,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 133 transitions. [2021-01-06 23:32:36,885 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 133 transitions. Word has length 14 [2021-01-06 23:32:36,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:36,886 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 133 transitions. [2021-01-06 23:32:36,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 23:32:36,886 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 133 transitions. [2021-01-06 23:32:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 23:32:36,886 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:36,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:36,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 23:32:36,887 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:36,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:36,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1849440776, now seen corresponding path program 1 times [2021-01-06 23:32:36,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:36,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691089083] [2021-01-06 23:32:36,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:36,941 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 23:32:36,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691089083] [2021-01-06 23:32:36,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:36,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 23:32:36,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856374379] [2021-01-06 23:32:36,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 23:32:36,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:36,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 23:32:36,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 23:32:36,944 INFO L87 Difference]: Start difference. First operand 70 states and 133 transitions. Second operand 5 states. [2021-01-06 23:32:36,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:36,975 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2021-01-06 23:32:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:32:36,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-06 23:32:36,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:36,976 INFO L225 Difference]: With dead ends: 60 [2021-01-06 23:32:36,976 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 23:32:36,977 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 23:32:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 23:32:36,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-01-06 23:32:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-06 23:32:36,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2021-01-06 23:32:36,979 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 15 [2021-01-06 23:32:36,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:36,980 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2021-01-06 23:32:36,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 23:32:36,980 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2021-01-06 23:32:36,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 23:32:36,980 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 23:32:36,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 23:32:36,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 23:32:36,981 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 23:32:36,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 23:32:36,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1050921859, now seen corresponding path program 1 times [2021-01-06 23:32:36,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 23:32:36,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237157211] [2021-01-06 23:32:36,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 23:32:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 23:32:37,072 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 23:32:37,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237157211] [2021-01-06 23:32:37,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 23:32:37,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 23:32:37,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669315087] [2021-01-06 23:32:37,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 23:32:37,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 23:32:37,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 23:32:37,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 23:32:37,075 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 6 states. [2021-01-06 23:32:37,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 23:32:37,099 INFO L93 Difference]: Finished difference Result 46 states and 83 transitions. [2021-01-06 23:32:37,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 23:32:37,100 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-01-06 23:32:37,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 23:32:37,100 INFO L225 Difference]: With dead ends: 46 [2021-01-06 23:32:37,100 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 23:32:37,101 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 23:32:37,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 23:32:37,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 23:32:37,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 23:32:37,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 23:32:37,101 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-01-06 23:32:37,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 23:32:37,102 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 23:32:37,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 23:32:37,102 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 23:32:37,102 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 23:32:37,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 23:32:37,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:32:37 BasicIcfg [2021-01-06 23:32:37,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 23:32:37,108 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 23:32:37,108 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 23:32:37,108 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 23:32:37,109 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:32:31" (3/4) ... [2021-01-06 23:32:37,114 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 23:32:37,122 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-01-06 23:32:37,122 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-01-06 23:32:37,123 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-01-06 23:32:37,132 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-01-06 23:32:37,132 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 23:32:37,132 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:32:37,132 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 23:32:37,182 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe008_tso.opt.i-witness.graphml [2021-01-06 23:32:37,183 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 23:32:37,185 INFO L168 Benchmark]: Toolchain (without parser) took 6972.44 ms. Allocated memory was 151.0 MB in the beginning and 235.9 MB in the end (delta: 84.9 MB). Free memory was 124.5 MB in the beginning and 143.2 MB in the end (delta: -18.7 MB). Peak memory consumption was 67.3 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:37,185 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 23:32:37,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.60 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 93.4 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:37,187 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.17 ms. Allocated memory is still 151.0 MB. Free memory was 93.4 MB in the beginning and 91.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:37,187 INFO L168 Benchmark]: Boogie Preprocessor took 51.86 ms. Allocated memory is still 151.0 MB. Free memory was 91.3 MB in the beginning and 90.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:37,188 INFO L168 Benchmark]: RCFGBuilder took 496.14 ms. Allocated memory is still 151.0 MB. Free memory was 90.1 MB in the beginning and 68.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:37,189 INFO L168 Benchmark]: TraceAbstraction took 5569.66 ms. Allocated memory was 151.0 MB in the beginning and 235.9 MB in the end (delta: 84.9 MB). Free memory was 67.6 MB in the beginning and 146.4 MB in the end (delta: -78.7 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:37,190 INFO L168 Benchmark]: Witness Printer took 75.10 ms. Allocated memory is still 235.9 MB. Free memory was 146.4 MB in the beginning and 143.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 23:32:37,194 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 700.60 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 93.4 MB in the end (delta: 30.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 70.17 ms. Allocated memory is still 151.0 MB. Free memory was 93.4 MB in the beginning and 91.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.86 ms. Allocated memory is still 151.0 MB. Free memory was 91.3 MB in the beginning and 90.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 496.14 ms. Allocated memory is still 151.0 MB. Free memory was 90.1 MB in the beginning and 68.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5569.66 ms. Allocated memory was 151.0 MB in the beginning and 235.9 MB in the end (delta: 84.9 MB). Free memory was 67.6 MB in the beginning and 146.4 MB in the end (delta: -78.7 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. * Witness Printer took 75.10 ms. Allocated memory is still 235.9 MB. Free memory was 146.4 MB in the beginning and 143.2 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 768 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2563 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: 5.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 235 SDtfs, 269 SDslu, 400 SDs, 0 SdLazy, 135 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 246 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 5519 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...