/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/safe009_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:39:44,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:39:44,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:39:44,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:39:44,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:39:44,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:39:44,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:39:44,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:39:44,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:39:44,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:39:44,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:39:44,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:39:44,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:39:44,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:39:44,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:39:44,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:39:44,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:39:44,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:39:44,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:39:44,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:39:44,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:39:44,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:39:44,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:39:44,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:39:44,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 13:39:44,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:39:44,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:39:44,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:39:44,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:39:44,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:39:44,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:39:44,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:39:44,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:39:44,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:39:44,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:39:44,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:39:44,598 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 13:39:44,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:39:44,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:39:44,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:39:44,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:39:44,626 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:39:44,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:39:44,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:39:44,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:39:44,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:39:44,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:39:44,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:39:44,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:39:44,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:39:44,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:39:44,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:39:44,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:39:44,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:39:44,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:39:44,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:39:44,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:39:44,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:39:44,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:39:44,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:39:44,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:39:44,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:39:44,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:39:45,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:39:45,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:39:45,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:39:45,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:39:45,071 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:39:45,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe009_pso.opt.i [2020-12-23 13:39:45,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1e6a0ee74/ff17e4cc40804c5cbc1afe77344cd6e0/FLAG5d9a8b7cc [2020-12-23 13:39:45,829 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:39:45,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_pso.opt.i [2020-12-23 13:39:45,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1e6a0ee74/ff17e4cc40804c5cbc1afe77344cd6e0/FLAG5d9a8b7cc [2020-12-23 13:39:46,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1e6a0ee74/ff17e4cc40804c5cbc1afe77344cd6e0 [2020-12-23 13:39:46,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:39:46,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:39:46,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:39:46,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:39:46,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:39:46,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:39:46" (1/1) ... [2020-12-23 13:39:46,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@555dc18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:46, skipping insertion in model container [2020-12-23 13:39:46,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:39:46" (1/1) ... [2020-12-23 13:39:46,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:39:46,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:39:46,398 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/safe009_pso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~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[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:39:46,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:39:46,707 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:39:46,730 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_pso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p1_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:39:46,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:39:46,969 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:39:46,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:46 WrapperNode [2020-12-23 13:39:46,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:39:46,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:39:46,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:39:46,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:39:46,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:46" (1/1) ... [2020-12-23 13:39:47,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:46" (1/1) ... [2020-12-23 13:39:47,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:39:47,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:39:47,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:39:47,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:39:47,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:46" (1/1) ... [2020-12-23 13:39:47,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:46" (1/1) ... [2020-12-23 13:39:47,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:46" (1/1) ... [2020-12-23 13:39:47,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:46" (1/1) ... [2020-12-23 13:39:47,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:46" (1/1) ... [2020-12-23 13:39:47,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:46" (1/1) ... [2020-12-23 13:39:47,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:46" (1/1) ... [2020-12-23 13:39:47,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:39:47,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:39:47,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:39:47,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:39:47,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:39:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:39:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:39:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:39:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:39:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:39:47,247 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:39:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:39:47,248 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:39:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:39:47,249 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:39:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:39:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:39:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:39:47,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:39:47,252 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-23 13:39:47,671 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:39:47,672 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:39:47,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:39:47 BoogieIcfgContainer [2020-12-23 13:39:47,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:39:47,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:39:47,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:39:47,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:39:47,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:39:46" (1/3) ... [2020-12-23 13:39:47,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ddba183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:39:47, skipping insertion in model container [2020-12-23 13:39:47,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:39:46" (2/3) ... [2020-12-23 13:39:47,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ddba183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:39:47, skipping insertion in model container [2020-12-23 13:39:47,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:39:47" (3/3) ... [2020-12-23 13:39:47,683 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_pso.opt.i [2020-12-23 13:39:47,690 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:39:47,690 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:39:47,696 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:39:47,697 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:39:47,729 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,730 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,730 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,730 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,730 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,731 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,731 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,734 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,736 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,736 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,736 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,736 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,737 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,737 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,738 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,738 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,742 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,745 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,745 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,745 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,748 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,748 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,749 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,749 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,759 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,760 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,765 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,765 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,765 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,765 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:39:47,770 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:39:47,792 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 13:39:47,832 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:39:47,832 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:39:47,832 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:39:47,832 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:39:47,833 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:39:47,833 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:39:47,833 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:39:47,833 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:39:47,852 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:39:47,854 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-23 13:39:47,858 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-23 13:39:47,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2020-12-23 13:39:47,947 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2020-12-23 13:39:47,948 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:39:47,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-12-23 13:39:47,970 INFO L116 LiptonReduction]: Number of co-enabled transitions 1220 [2020-12-23 13:39:50,922 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 13:39:51,266 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-23 13:39:51,473 INFO L131 LiptonReduction]: Checked pairs total: 2044 [2020-12-23 13:39:51,473 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-23 13:39:51,480 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-12-23 13:39:51,504 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 282 states. [2020-12-23 13:39:51,506 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2020-12-23 13:39:51,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:39:51,514 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:51,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:51,515 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:51,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:51,520 INFO L82 PathProgramCache]: Analyzing trace with hash 622846231, now seen corresponding path program 1 times [2020-12-23 13:39:51,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:51,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681865378] [2020-12-23 13:39:51,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:51,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681865378] [2020-12-23 13:39:51,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:51,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:39:51,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396227258] [2020-12-23 13:39:51,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 13:39:51,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:51,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 13:39:51,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:39:51,733 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 2 states. [2020-12-23 13:39:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:51,764 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-12-23 13:39:51,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 13:39:51,766 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 13:39:51,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:51,782 INFO L225 Difference]: With dead ends: 282 [2020-12-23 13:39:51,782 INFO L226 Difference]: Without dead ends: 234 [2020-12-23 13:39:51,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:39:51,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-12-23 13:39:51,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-12-23 13:39:51,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-12-23 13:39:51,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 656 transitions. [2020-12-23 13:39:51,883 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 656 transitions. Word has length 8 [2020-12-23 13:39:51,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:51,885 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 656 transitions. [2020-12-23 13:39:51,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 13:39:51,891 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 656 transitions. [2020-12-23 13:39:51,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:39:51,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:51,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:51,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:39:51,895 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:51,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:51,898 INFO L82 PathProgramCache]: Analyzing trace with hash 2128318799, now seen corresponding path program 1 times [2020-12-23 13:39:51,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:51,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566687790] [2020-12-23 13:39:51,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:52,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:52,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566687790] [2020-12-23 13:39:52,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:52,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:39:52,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438848774] [2020-12-23 13:39:52,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:39:52,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:52,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:39:52,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:39:52,068 INFO L87 Difference]: Start difference. First operand 234 states and 656 transitions. Second operand 4 states. [2020-12-23 13:39:52,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:52,124 INFO L93 Difference]: Finished difference Result 402 states and 1050 transitions. [2020-12-23 13:39:52,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:39:52,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 13:39:52,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:52,129 INFO L225 Difference]: With dead ends: 402 [2020-12-23 13:39:52,129 INFO L226 Difference]: Without dead ends: 308 [2020-12-23 13:39:52,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:52,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-12-23 13:39:52,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 264. [2020-12-23 13:39:52,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-12-23 13:39:52,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 712 transitions. [2020-12-23 13:39:52,156 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 712 transitions. Word has length 9 [2020-12-23 13:39:52,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:52,156 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 712 transitions. [2020-12-23 13:39:52,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:39:52,156 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 712 transitions. [2020-12-23 13:39:52,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:39:52,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:52,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:52,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:39:52,159 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:52,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:52,160 INFO L82 PathProgramCache]: Analyzing trace with hash 503221834, now seen corresponding path program 1 times [2020-12-23 13:39:52,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:52,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227692125] [2020-12-23 13:39:52,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:52,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227692125] [2020-12-23 13:39:52,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:52,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:39:52,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743569055] [2020-12-23 13:39:52,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:52,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:52,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:52,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:52,267 INFO L87 Difference]: Start difference. First operand 264 states and 712 transitions. Second operand 5 states. [2020-12-23 13:39:52,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:52,332 INFO L93 Difference]: Finished difference Result 345 states and 864 transitions. [2020-12-23 13:39:52,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:39:52,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:39:52,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:52,335 INFO L225 Difference]: With dead ends: 345 [2020-12-23 13:39:52,335 INFO L226 Difference]: Without dead ends: 278 [2020-12-23 13:39:52,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:39:52,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-12-23 13:39:52,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 246. [2020-12-23 13:39:52,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-12-23 13:39:52,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 648 transitions. [2020-12-23 13:39:52,353 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 648 transitions. Word has length 10 [2020-12-23 13:39:52,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:52,354 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 648 transitions. [2020-12-23 13:39:52,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:52,354 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 648 transitions. [2020-12-23 13:39:52,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:39:52,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:52,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:52,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:39:52,356 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:52,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:52,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1553300282, now seen corresponding path program 1 times [2020-12-23 13:39:52,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:52,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936715023] [2020-12-23 13:39:52,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:52,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:52,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936715023] [2020-12-23 13:39:52,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:52,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:39:52,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992188425] [2020-12-23 13:39:52,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:52,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:52,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:52,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:52,484 INFO L87 Difference]: Start difference. First operand 246 states and 648 transitions. Second operand 5 states. [2020-12-23 13:39:52,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:52,540 INFO L93 Difference]: Finished difference Result 298 states and 740 transitions. [2020-12-23 13:39:52,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:39:52,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:39:52,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:52,543 INFO L225 Difference]: With dead ends: 298 [2020-12-23 13:39:52,543 INFO L226 Difference]: Without dead ends: 254 [2020-12-23 13:39:52,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:39:52,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-12-23 13:39:52,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 222. [2020-12-23 13:39:52,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-23 13:39:52,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 576 transitions. [2020-12-23 13:39:52,558 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 576 transitions. Word has length 10 [2020-12-23 13:39:52,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:52,558 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 576 transitions. [2020-12-23 13:39:52,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 576 transitions. [2020-12-23 13:39:52,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:39:52,560 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:52,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:52,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:39:52,561 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:52,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:52,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1580065377, now seen corresponding path program 1 times [2020-12-23 13:39:52,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:52,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925110542] [2020-12-23 13:39:52,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:52,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925110542] [2020-12-23 13:39:52,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:52,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:39:52,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801701176] [2020-12-23 13:39:52,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:52,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:52,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:52,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:52,660 INFO L87 Difference]: Start difference. First operand 222 states and 576 transitions. Second operand 5 states. [2020-12-23 13:39:52,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:52,715 INFO L93 Difference]: Finished difference Result 266 states and 662 transitions. [2020-12-23 13:39:52,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:39:52,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 13:39:52,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:52,718 INFO L225 Difference]: With dead ends: 266 [2020-12-23 13:39:52,719 INFO L226 Difference]: Without dead ends: 242 [2020-12-23 13:39:52,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:39:52,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-12-23 13:39:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 210. [2020-12-23 13:39:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-12-23 13:39:52,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 538 transitions. [2020-12-23 13:39:52,731 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 538 transitions. Word has length 11 [2020-12-23 13:39:52,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:52,731 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 538 transitions. [2020-12-23 13:39:52,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:52,732 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 538 transitions. [2020-12-23 13:39:52,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:39:52,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:52,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:52,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:39:52,737 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:52,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:52,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1430850506, now seen corresponding path program 1 times [2020-12-23 13:39:52,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:52,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83796343] [2020-12-23 13:39:52,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:52,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:52,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83796343] [2020-12-23 13:39:52,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:52,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:39:52,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470002876] [2020-12-23 13:39:52,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:39:52,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:52,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:39:52,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:39:52,812 INFO L87 Difference]: Start difference. First operand 210 states and 538 transitions. Second operand 6 states. [2020-12-23 13:39:52,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:52,859 INFO L93 Difference]: Finished difference Result 300 states and 745 transitions. [2020-12-23 13:39:52,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:39:52,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-23 13:39:52,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:52,862 INFO L225 Difference]: With dead ends: 300 [2020-12-23 13:39:52,862 INFO L226 Difference]: Without dead ends: 180 [2020-12-23 13:39:52,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:39:52,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-23 13:39:52,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 156. [2020-12-23 13:39:52,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-12-23 13:39:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 390 transitions. [2020-12-23 13:39:52,871 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 390 transitions. Word has length 12 [2020-12-23 13:39:52,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:52,871 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 390 transitions. [2020-12-23 13:39:52,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:39:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 390 transitions. [2020-12-23 13:39:52,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:39:52,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:52,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:52,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:39:52,873 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:52,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:52,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1400741867, now seen corresponding path program 1 times [2020-12-23 13:39:52,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:52,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980349368] [2020-12-23 13:39:52,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:52,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980349368] [2020-12-23 13:39:52,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:52,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:39:52,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120699849] [2020-12-23 13:39:52,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:52,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:52,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:52,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:52,977 INFO L87 Difference]: Start difference. First operand 156 states and 390 transitions. Second operand 5 states. [2020-12-23 13:39:53,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:53,022 INFO L93 Difference]: Finished difference Result 254 states and 611 transitions. [2020-12-23 13:39:53,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:39:53,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:39:53,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:53,024 INFO L225 Difference]: With dead ends: 254 [2020-12-23 13:39:53,025 INFO L226 Difference]: Without dead ends: 144 [2020-12-23 13:39:53,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:39:53,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-23 13:39:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 120. [2020-12-23 13:39:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-23 13:39:53,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 282 transitions. [2020-12-23 13:39:53,031 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 282 transitions. Word has length 12 [2020-12-23 13:39:53,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:53,031 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 282 transitions. [2020-12-23 13:39:53,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:53,031 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 282 transitions. [2020-12-23 13:39:53,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:39:53,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:53,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:53,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:39:53,032 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:53,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:53,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1013965314, now seen corresponding path program 2 times [2020-12-23 13:39:53,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:53,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287956595] [2020-12-23 13:39:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:53,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287956595] [2020-12-23 13:39:53,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:53,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:39:53,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982798568] [2020-12-23 13:39:53,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:53,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:53,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:53,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:53,083 INFO L87 Difference]: Start difference. First operand 120 states and 282 transitions. Second operand 5 states. [2020-12-23 13:39:53,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:53,120 INFO L93 Difference]: Finished difference Result 134 states and 299 transitions. [2020-12-23 13:39:53,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:39:53,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 13:39:53,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:53,121 INFO L225 Difference]: With dead ends: 134 [2020-12-23 13:39:53,121 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 13:39:53,122 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 [2020-12-23 13:39:53,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 13:39:53,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-23 13:39:53,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 13:39:53,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 113 transitions. [2020-12-23 13:39:53,125 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 113 transitions. Word has length 12 [2020-12-23 13:39:53,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:53,125 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 113 transitions. [2020-12-23 13:39:53,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 113 transitions. [2020-12-23 13:39:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:39:53,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:53,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:53,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:39:53,126 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:53,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:53,127 INFO L82 PathProgramCache]: Analyzing trace with hash 776645246, now seen corresponding path program 1 times [2020-12-23 13:39:53,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:53,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237585017] [2020-12-23 13:39:53,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:53,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237585017] [2020-12-23 13:39:53,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:53,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:39:53,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678139913] [2020-12-23 13:39:53,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:39:53,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:53,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:39:53,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:39:53,181 INFO L87 Difference]: Start difference. First operand 56 states and 113 transitions. Second operand 4 states. [2020-12-23 13:39:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:53,202 INFO L93 Difference]: Finished difference Result 58 states and 102 transitions. [2020-12-23 13:39:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:39:53,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 13:39:53,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:53,203 INFO L225 Difference]: With dead ends: 58 [2020-12-23 13:39:53,203 INFO L226 Difference]: Without dead ends: 45 [2020-12-23 13:39:53,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:53,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-23 13:39:53,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-23 13:39:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 13:39:53,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 78 transitions. [2020-12-23 13:39:53,206 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 78 transitions. Word has length 13 [2020-12-23 13:39:53,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:53,206 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 78 transitions. [2020-12-23 13:39:53,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:39:53,206 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 78 transitions. [2020-12-23 13:39:53,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:39:53,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:53,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:53,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:39:53,207 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:53,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:53,208 INFO L82 PathProgramCache]: Analyzing trace with hash -809970744, now seen corresponding path program 1 times [2020-12-23 13:39:53,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:53,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584310508] [2020-12-23 13:39:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:53,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584310508] [2020-12-23 13:39:53,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:53,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:39:53,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6580335] [2020-12-23 13:39:53,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:39:53,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:53,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:39:53,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:39:53,280 INFO L87 Difference]: Start difference. First operand 45 states and 78 transitions. Second operand 5 states. [2020-12-23 13:39:53,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:53,315 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2020-12-23 13:39:53,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:39:53,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 13:39:53,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:53,317 INFO L225 Difference]: With dead ends: 35 [2020-12-23 13:39:53,317 INFO L226 Difference]: Without dead ends: 27 [2020-12-23 13:39:53,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:39:53,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-23 13:39:53,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-23 13:39:53,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 13:39:53,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2020-12-23 13:39:53,319 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 14 [2020-12-23 13:39:53,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:53,320 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-12-23 13:39:53,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:39:53,320 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2020-12-23 13:39:53,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 13:39:53,320 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:39:53,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:39:53,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:39:53,321 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:39:53,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:39:53,321 INFO L82 PathProgramCache]: Analyzing trace with hash -145595207, now seen corresponding path program 1 times [2020-12-23 13:39:53,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:39:53,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142563580] [2020-12-23 13:39:53,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:39:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:39:53,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:39:53,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142563580] [2020-12-23 13:39:53,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:39:53,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:39:53,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191058518] [2020-12-23 13:39:53,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:39:53,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:39:53,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:39:53,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:39:53,420 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 6 states. [2020-12-23 13:39:53,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:39:53,459 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2020-12-23 13:39:53,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:39:53,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 13:39:53,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:39:53,460 INFO L225 Difference]: With dead ends: 21 [2020-12-23 13:39:53,461 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:39:53,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:39:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:39:53,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:39:53,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:39:53,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:39:53,462 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-23 13:39:53,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:39:53,462 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:39:53,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:39:53,462 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:39:53,463 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:39:53,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 13:39:53,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:39:53 BasicIcfg [2020-12-23 13:39:53,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:39:53,469 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:39:53,469 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:39:53,470 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:39:53,470 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:39:47" (3/4) ... [2020-12-23 13:39:53,474 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:39:53,483 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:39:53,484 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:39:53,484 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:39:53,491 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 13:39:53,491 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:39:53,492 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:39:53,492 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:39:53,560 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe009_pso.opt.i-witness.graphml [2020-12-23 13:39:53,560 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:39:53,562 INFO L168 Benchmark]: Toolchain (without parser) took 7444.53 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 125.1 MB in the beginning and 103.4 MB in the end (delta: 21.7 MB). Peak memory consumption was 101.9 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:53,563 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:39:53,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 846.74 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 131.7 MB in the end (delta: -6.8 MB). Peak memory consumption was 33.3 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:53,568 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.43 ms. Allocated memory is still 151.0 MB. Free memory was 131.2 MB in the beginning and 129.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:53,568 INFO L168 Benchmark]: Boogie Preprocessor took 60.22 ms. Allocated memory is still 151.0 MB. Free memory was 129.6 MB in the beginning and 128.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:53,569 INFO L168 Benchmark]: RCFGBuilder took 549.49 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 106.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:53,574 INFO L168 Benchmark]: TraceAbstraction took 5792.92 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 106.0 MB in the beginning and 106.0 MB in the end (delta: -1.5 kB). Peak memory consumption was 78.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:53,575 INFO L168 Benchmark]: Witness Printer took 91.24 ms. Allocated memory is still 229.6 MB. Free memory was 106.0 MB in the beginning and 103.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:39:53,577 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 846.74 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 131.7 MB in the end (delta: -6.8 MB). Peak memory consumption was 33.3 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 91.43 ms. Allocated memory is still 151.0 MB. Free memory was 131.2 MB in the beginning and 129.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.22 ms. Allocated memory is still 151.0 MB. Free memory was 129.6 MB in the beginning and 128.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 549.49 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 106.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5792.92 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 106.0 MB in the beginning and 106.0 MB in the end (delta: -1.5 kB). Peak memory consumption was 78.1 MB. Max. memory is 8.0 GB. * Witness Printer took 91.24 ms. Allocated memory is still 229.6 MB. Free memory was 106.0 MB in the beginning and 103.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 799 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 81 PlacesBefore, 31 PlacesAfterwards, 73 TransitionsBefore, 22 TransitionsAfterwards, 1220 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2044 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, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 236 SDtfs, 261 SDslu, 362 SDs, 0 SdLazy, 136 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred 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, 188 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 5242 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...