/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/pthreads/forkFork.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 16:11:00,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 16:11:00,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 16:11:00,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 16:11:00,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 16:11:00,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 16:11:00,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 16:11:00,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 16:11:00,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 16:11:00,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 16:11:00,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 16:11:00,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 16:11:00,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 16:11:00,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 16:11:00,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 16:11:00,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 16:11:00,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 16:11:00,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 16:11:00,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 16:11:00,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 16:11:00,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 16:11:00,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 16:11:00,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 16:11:00,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 16:11:00,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 16:11:00,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 16:11:00,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 16:11:00,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 16:11:00,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 16:11:00,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 16:11:00,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 16:11:00,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 16:11:00,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 16:11:00,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 16:11:00,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 16:11:00,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 16:11:00,107 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 16:11:00,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 16:11:00,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 16:11:00,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 16:11:00,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 16:11:00,146 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 16:11:00,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 16:11:00,147 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 16:11:00,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 16:11:00,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 16:11:00,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 16:11:00,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 16:11:00,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 16:11:00,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 16:11:00,149 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 16:11:00,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 16:11:00,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 16:11:00,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 16:11:00,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 16:11:00,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 16:11:00,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 16:11:00,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 16:11:00,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 16:11:00,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 16:11:00,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 16:11:00,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 16:11:00,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 16:11:00,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 16:11:00,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 16:11:00,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 16:11:00,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 16:11:00,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 16:11:00,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 16:11:00,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 16:11:00,473 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 16:11:00,473 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 16:11:00,474 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkFork.c [2020-10-11 16:11:00,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/962d42256/a801994eb52c41c4999f2c81f87b3651/FLAGc1a3281b9 [2020-10-11 16:11:00,911 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 16:11:00,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/forkFork.c [2020-10-11 16:11:00,912 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-11 16:11:00,912 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-11 16:11:00,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/962d42256/a801994eb52c41c4999f2c81f87b3651/FLAGc1a3281b9 [2020-10-11 16:11:01,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/962d42256/a801994eb52c41c4999f2c81f87b3651 [2020-10-11 16:11:01,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 16:11:01,270 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 16:11:01,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 16:11:01,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 16:11:01,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 16:11:01,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:11:01" (1/1) ... [2020-10-11 16:11:01,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18b9395a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:01, skipping insertion in model container [2020-10-11 16:11:01,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:11:01" (1/1) ... [2020-10-11 16:11:01,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 16:11:01,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 16:11:01,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:11:01,474 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 16:11:01,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:11:01,588 INFO L208 MainTranslator]: Completed translation [2020-10-11 16:11:01,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:01 WrapperNode [2020-10-11 16:11:01,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 16:11:01,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 16:11:01,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 16:11:01,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 16:11:01,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:01" (1/1) ... [2020-10-11 16:11:01,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:01" (1/1) ... [2020-10-11 16:11:01,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 16:11:01,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 16:11:01,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 16:11:01,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 16:11:01,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:01" (1/1) ... [2020-10-11 16:11:01,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:01" (1/1) ... [2020-10-11 16:11:01,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:01" (1/1) ... [2020-10-11 16:11:01,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:01" (1/1) ... [2020-10-11 16:11:01,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:01" (1/1) ... [2020-10-11 16:11:01,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:01" (1/1) ... [2020-10-11 16:11:01,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:01" (1/1) ... [2020-10-11 16:11:01,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 16:11:01,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 16:11:01,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 16:11:01,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 16:11:01,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-10-11 16:11:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-11 16:11:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 16:11:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2020-10-11 16:11:01,703 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2020-10-11 16:11:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-11 16:11:01,704 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-11 16:11:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 16:11:01,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 16:11:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-11 16:11:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 16:11:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-11 16:11:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 16:11:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 16:11:01,706 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 16:11:02,056 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 16:11:02,056 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-11 16:11:02,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:11:02 BoogieIcfgContainer [2020-10-11 16:11:02,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 16:11:02,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 16:11:02,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 16:11:02,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 16:11:02,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:11:01" (1/3) ... [2020-10-11 16:11:02,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0c92b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:11:02, skipping insertion in model container [2020-10-11 16:11:02,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:11:01" (2/3) ... [2020-10-11 16:11:02,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0c92b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:11:02, skipping insertion in model container [2020-10-11 16:11:02,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:11:02" (3/3) ... [2020-10-11 16:11:02,067 INFO L111 eAbstractionObserver]: Analyzing ICFG forkFork.c [2020-10-11 16:11:02,079 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 16:11:02,079 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 16:11:02,085 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-11 16:11:02,086 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 16:11:02,118 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,118 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,119 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,119 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,119 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,119 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,120 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,120 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,120 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,120 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,120 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,121 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,121 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,121 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,121 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,122 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,122 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,122 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,122 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,123 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,123 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,123 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,124 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,124 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,124 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,124 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,125 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,125 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~a.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,126 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~a.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,126 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,126 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,126 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,127 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,127 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,127 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,127 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~param~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,128 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~param~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,128 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,128 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,128 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,135 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,136 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,136 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,136 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,137 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,138 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,139 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,140 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,140 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,140 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,141 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,141 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,141 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,141 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,141 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,142 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,142 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,143 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,143 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,143 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,143 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,143 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,144 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,144 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,144 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,144 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,145 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,145 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,151 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,151 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,152 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,153 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,153 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,153 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,153 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,153 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,154 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,168 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,169 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,169 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,169 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~param~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,169 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,169 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,170 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~a.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,170 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~param~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,170 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,170 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#ret~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,170 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,170 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,171 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_~#second_thread~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,171 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,171 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~mem5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,171 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,179 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,179 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,179 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,179 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,179 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,180 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,180 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,181 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,181 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:11:02,218 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-11 16:11:02,235 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 16:11:02,236 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 16:11:02,236 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 16:11:02,236 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 16:11:02,236 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 16:11:02,236 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 16:11:02,236 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 16:11:02,237 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 16:11:02,252 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 16:11:02,255 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 83 transitions, 194 flow [2020-10-11 16:11:02,258 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 83 transitions, 194 flow [2020-10-11 16:11:02,260 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 89 places, 83 transitions, 194 flow [2020-10-11 16:11:02,309 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2020-10-11 16:11:02,310 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-11 16:11:02,314 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 2/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 98. Up to 5 conditions per place. [2020-10-11 16:11:02,317 INFO L117 LiptonReduction]: Number of co-enabled transitions 334 [2020-10-11 16:11:04,022 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-11 16:11:04,140 INFO L132 LiptonReduction]: Checked pairs total: 1127 [2020-10-11 16:11:04,140 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-11 16:11:04,147 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 24 transitions, 76 flow [2020-10-11 16:11:04,157 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 50 states. [2020-10-11 16:11:04,159 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-11 16:11:04,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-11 16:11:04,166 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:04,167 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-11 16:11:04,167 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:04,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:04,173 INFO L82 PathProgramCache]: Analyzing trace with hash 257386320, now seen corresponding path program 1 times [2020-10-11 16:11:04,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:04,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275534911] [2020-10-11 16:11:04,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:04,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275534911] [2020-10-11 16:11:04,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:04,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-11 16:11:04,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553576032] [2020-10-11 16:11:04,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 16:11:04,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:04,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 16:11:04,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 16:11:04,444 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 6 states. [2020-10-11 16:11:04,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:04,585 INFO L93 Difference]: Finished difference Result 44 states and 73 transitions. [2020-10-11 16:11:04,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 16:11:04,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-10-11 16:11:04,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:04,596 INFO L225 Difference]: With dead ends: 44 [2020-10-11 16:11:04,596 INFO L226 Difference]: Without dead ends: 41 [2020-10-11 16:11:04,597 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:11:04,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-11 16:11:04,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-11 16:11:04,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-11 16:11:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 69 transitions. [2020-10-11 16:11:04,628 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 69 transitions. Word has length 5 [2020-10-11 16:11:04,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:04,629 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 69 transitions. [2020-10-11 16:11:04,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 16:11:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 69 transitions. [2020-10-11 16:11:04,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 16:11:04,630 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:04,630 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:11:04,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 16:11:04,631 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:04,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:04,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1380238106, now seen corresponding path program 1 times [2020-10-11 16:11:04,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:04,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560486791] [2020-10-11 16:11:04,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:04,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:04,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560486791] [2020-10-11 16:11:04,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:04,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 16:11:04,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574727580] [2020-10-11 16:11:04,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 16:11:04,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:04,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 16:11:04,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-11 16:11:04,773 INFO L87 Difference]: Start difference. First operand 41 states and 69 transitions. Second operand 8 states. [2020-10-11 16:11:04,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:04,990 INFO L93 Difference]: Finished difference Result 51 states and 81 transitions. [2020-10-11 16:11:04,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-11 16:11:04,991 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-10-11 16:11:04,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:04,992 INFO L225 Difference]: With dead ends: 51 [2020-10-11 16:11:04,992 INFO L226 Difference]: Without dead ends: 51 [2020-10-11 16:11:04,993 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-11 16:11:04,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-11 16:11:05,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-10-11 16:11:05,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-11 16:11:05,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 75 transitions. [2020-10-11 16:11:05,002 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 75 transitions. Word has length 10 [2020-10-11 16:11:05,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:05,002 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 75 transitions. [2020-10-11 16:11:05,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 16:11:05,003 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 75 transitions. [2020-10-11 16:11:05,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-11 16:11:05,004 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:05,004 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:11:05,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 16:11:05,004 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:05,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:05,005 INFO L82 PathProgramCache]: Analyzing trace with hash -199570406, now seen corresponding path program 2 times [2020-10-11 16:11:05,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:05,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206989841] [2020-10-11 16:11:05,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:05,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206989841] [2020-10-11 16:11:05,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:05,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 16:11:05,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514935992] [2020-10-11 16:11:05,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 16:11:05,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:05,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 16:11:05,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-11 16:11:05,114 INFO L87 Difference]: Start difference. First operand 45 states and 75 transitions. Second operand 6 states. [2020-10-11 16:11:05,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:05,239 INFO L93 Difference]: Finished difference Result 50 states and 75 transitions. [2020-10-11 16:11:05,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 16:11:05,239 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-11 16:11:05,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:05,240 INFO L225 Difference]: With dead ends: 50 [2020-10-11 16:11:05,240 INFO L226 Difference]: Without dead ends: 50 [2020-10-11 16:11:05,241 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-11 16:11:05,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-11 16:11:05,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2020-10-11 16:11:05,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-11 16:11:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 58 transitions. [2020-10-11 16:11:05,247 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 58 transitions. Word has length 10 [2020-10-11 16:11:05,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:05,247 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 58 transitions. [2020-10-11 16:11:05,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 16:11:05,247 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 58 transitions. [2020-10-11 16:11:05,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 16:11:05,248 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:05,248 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:11:05,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 16:11:05,249 INFO L429 AbstractCegarLoop]: === Iteration 4 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:05,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:05,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1138692504, now seen corresponding path program 1 times [2020-10-11 16:11:05,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:05,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318703886] [2020-10-11 16:11:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:05,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318703886] [2020-10-11 16:11:05,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:05,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-11 16:11:05,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424381956] [2020-10-11 16:11:05,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-11 16:11:05,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:05,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-11 16:11:05,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-11 16:11:05,641 INFO L87 Difference]: Start difference. First operand 35 states and 58 transitions. Second operand 14 states. [2020-10-11 16:11:06,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:06,274 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2020-10-11 16:11:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 16:11:06,279 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-10-11 16:11:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:06,280 INFO L225 Difference]: With dead ends: 41 [2020-10-11 16:11:06,280 INFO L226 Difference]: Without dead ends: 33 [2020-10-11 16:11:06,282 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2020-10-11 16:11:06,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-11 16:11:06,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-11 16:11:06,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-11 16:11:06,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 54 transitions. [2020-10-11 16:11:06,286 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 54 transitions. Word has length 15 [2020-10-11 16:11:06,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:06,286 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 54 transitions. [2020-10-11 16:11:06,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-11 16:11:06,286 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 54 transitions. [2020-10-11 16:11:06,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 16:11:06,287 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:06,287 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:11:06,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 16:11:06,287 INFO L429 AbstractCegarLoop]: === Iteration 5 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:06,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:06,288 INFO L82 PathProgramCache]: Analyzing trace with hash -170034344, now seen corresponding path program 2 times [2020-10-11 16:11:06,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:06,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054067200] [2020-10-11 16:11:06,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:06,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054067200] [2020-10-11 16:11:06,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:06,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-11 16:11:06,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662556977] [2020-10-11 16:11:06,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 16:11:06,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:06,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 16:11:06,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-11 16:11:06,509 INFO L87 Difference]: Start difference. First operand 33 states and 54 transitions. Second operand 13 states. [2020-10-11 16:11:07,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:07,065 INFO L93 Difference]: Finished difference Result 41 states and 63 transitions. [2020-10-11 16:11:07,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 16:11:07,065 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-10-11 16:11:07,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:07,067 INFO L225 Difference]: With dead ends: 41 [2020-10-11 16:11:07,067 INFO L226 Difference]: Without dead ends: 32 [2020-10-11 16:11:07,068 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2020-10-11 16:11:07,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-11 16:11:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-11 16:11:07,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-11 16:11:07,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 52 transitions. [2020-10-11 16:11:07,073 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 52 transitions. Word has length 15 [2020-10-11 16:11:07,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:07,073 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 52 transitions. [2020-10-11 16:11:07,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 16:11:07,074 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 52 transitions. [2020-10-11 16:11:07,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 16:11:07,074 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:07,074 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:11:07,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 16:11:07,075 INFO L429 AbstractCegarLoop]: === Iteration 6 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:07,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:07,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1360401226, now seen corresponding path program 3 times [2020-10-11 16:11:07,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:07,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630171185] [2020-10-11 16:11:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:07,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:07,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630171185] [2020-10-11 16:11:07,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:07,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-11 16:11:07,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316524238] [2020-10-11 16:11:07,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 16:11:07,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:07,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 16:11:07,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-11 16:11:07,301 INFO L87 Difference]: Start difference. First operand 32 states and 52 transitions. Second operand 13 states. [2020-10-11 16:11:07,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:07,806 INFO L93 Difference]: Finished difference Result 42 states and 64 transitions. [2020-10-11 16:11:07,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 16:11:07,807 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-10-11 16:11:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:07,808 INFO L225 Difference]: With dead ends: 42 [2020-10-11 16:11:07,808 INFO L226 Difference]: Without dead ends: 31 [2020-10-11 16:11:07,809 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2020-10-11 16:11:07,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-11 16:11:07,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-11 16:11:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-11 16:11:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 49 transitions. [2020-10-11 16:11:07,813 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 49 transitions. Word has length 15 [2020-10-11 16:11:07,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:07,814 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 49 transitions. [2020-10-11 16:11:07,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 16:11:07,814 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-10-11 16:11:07,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 16:11:07,815 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:07,815 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:11:07,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 16:11:07,815 INFO L429 AbstractCegarLoop]: === Iteration 7 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:07,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:07,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1481937188, now seen corresponding path program 4 times [2020-10-11 16:11:07,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:07,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160737536] [2020-10-11 16:11:07,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:08,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:08,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160737536] [2020-10-11 16:11:08,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:08,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-11 16:11:08,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858774912] [2020-10-11 16:11:08,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 16:11:08,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:08,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 16:11:08,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-11 16:11:08,100 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 13 states. [2020-10-11 16:11:08,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:08,640 INFO L93 Difference]: Finished difference Result 45 states and 69 transitions. [2020-10-11 16:11:08,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 16:11:08,641 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-10-11 16:11:08,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:08,642 INFO L225 Difference]: With dead ends: 45 [2020-10-11 16:11:08,642 INFO L226 Difference]: Without dead ends: 29 [2020-10-11 16:11:08,643 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2020-10-11 16:11:08,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-11 16:11:08,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-11 16:11:08,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-11 16:11:08,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 44 transitions. [2020-10-11 16:11:08,647 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 44 transitions. Word has length 15 [2020-10-11 16:11:08,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:08,647 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 44 transitions. [2020-10-11 16:11:08,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 16:11:08,647 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2020-10-11 16:11:08,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 16:11:08,648 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:08,648 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:11:08,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 16:11:08,648 INFO L429 AbstractCegarLoop]: === Iteration 8 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:08,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:08,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1803391854, now seen corresponding path program 5 times [2020-10-11 16:11:08,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:08,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182874911] [2020-10-11 16:11:08,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:08,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182874911] [2020-10-11 16:11:08,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:08,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-11 16:11:08,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470596078] [2020-10-11 16:11:08,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 16:11:08,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:08,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 16:11:08,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-11 16:11:08,833 INFO L87 Difference]: Start difference. First operand 29 states and 44 transitions. Second operand 13 states. [2020-10-11 16:11:09,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:09,327 INFO L93 Difference]: Finished difference Result 47 states and 72 transitions. [2020-10-11 16:11:09,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 16:11:09,328 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-10-11 16:11:09,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:09,328 INFO L225 Difference]: With dead ends: 47 [2020-10-11 16:11:09,329 INFO L226 Difference]: Without dead ends: 27 [2020-10-11 16:11:09,329 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2020-10-11 16:11:09,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-11 16:11:09,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-11 16:11:09,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-11 16:11:09,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 40 transitions. [2020-10-11 16:11:09,334 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 40 transitions. Word has length 15 [2020-10-11 16:11:09,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:09,334 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 40 transitions. [2020-10-11 16:11:09,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 16:11:09,334 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 40 transitions. [2020-10-11 16:11:09,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 16:11:09,335 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:09,335 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:11:09,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 16:11:09,335 INFO L429 AbstractCegarLoop]: === Iteration 9 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:09,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:09,336 INFO L82 PathProgramCache]: Analyzing trace with hash -613115126, now seen corresponding path program 6 times [2020-10-11 16:11:09,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:09,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964989294] [2020-10-11 16:11:09,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:09,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964989294] [2020-10-11 16:11:09,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:09,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-11 16:11:09,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997016905] [2020-10-11 16:11:09,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 16:11:09,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:09,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 16:11:09,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-11 16:11:09,526 INFO L87 Difference]: Start difference. First operand 27 states and 40 transitions. Second operand 13 states. [2020-10-11 16:11:10,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:10,003 INFO L93 Difference]: Finished difference Result 47 states and 71 transitions. [2020-10-11 16:11:10,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 16:11:10,003 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-10-11 16:11:10,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:10,004 INFO L225 Difference]: With dead ends: 47 [2020-10-11 16:11:10,004 INFO L226 Difference]: Without dead ends: 26 [2020-10-11 16:11:10,005 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2020-10-11 16:11:10,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-11 16:11:10,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-11 16:11:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-11 16:11:10,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 38 transitions. [2020-10-11 16:11:10,008 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 38 transitions. Word has length 15 [2020-10-11 16:11:10,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:10,009 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 38 transitions. [2020-10-11 16:11:10,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 16:11:10,009 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 38 transitions. [2020-10-11 16:11:10,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-11 16:11:10,009 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:11:10,010 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:11:10,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 16:11:10,010 INFO L429 AbstractCegarLoop]: === Iteration 10 === [fooThread1of1ForFork1Err1INUSE_VIOLATION, barErr0ASSERT_VIOLATIONASSERT, fooErr0INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, barErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:11:10,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:11:10,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1679512088, now seen corresponding path program 7 times [2020-10-11 16:11:10,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:11:10,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430953793] [2020-10-11 16:11:10,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:11:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:11:10,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:11:10,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430953793] [2020-10-11 16:11:10,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:11:10,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-11 16:11:10,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710966933] [2020-10-11 16:11:10,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 16:11:10,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:11:10,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 16:11:10,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-11 16:11:10,206 INFO L87 Difference]: Start difference. First operand 26 states and 38 transitions. Second operand 13 states. [2020-10-11 16:11:10,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:11:10,642 INFO L93 Difference]: Finished difference Result 25 states and 37 transitions. [2020-10-11 16:11:10,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 16:11:10,642 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-10-11 16:11:10,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:11:10,643 INFO L225 Difference]: With dead ends: 25 [2020-10-11 16:11:10,643 INFO L226 Difference]: Without dead ends: 0 [2020-10-11 16:11:10,644 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2020-10-11 16:11:10,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-11 16:11:10,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-11 16:11:10,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-11 16:11:10,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-11 16:11:10,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-11 16:11:10,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:11:10,645 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-11 16:11:10,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 16:11:10,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-11 16:11:10,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-11 16:11:10,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 16:11:10,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 04:11:10 BasicIcfg [2020-10-11 16:11:10,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 16:11:10,651 INFO L168 Benchmark]: Toolchain (without parser) took 9381.53 ms. Allocated memory was 250.6 MB in the beginning and 463.5 MB in the end (delta: 212.9 MB). Free memory was 206.5 MB in the beginning and 188.0 MB in the end (delta: 18.5 MB). Peak memory consumption was 231.4 MB. Max. memory is 14.2 GB. [2020-10-11 16:11:10,652 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 16:11:10,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.83 ms. Allocated memory was 250.6 MB in the beginning and 313.0 MB in the end (delta: 62.4 MB). Free memory was 206.5 MB in the beginning and 287.2 MB in the end (delta: -80.7 MB). Peak memory consumption was 27.6 MB. Max. memory is 14.2 GB. [2020-10-11 16:11:10,654 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.06 ms. Allocated memory is still 313.0 MB. Free memory was 287.2 MB in the beginning and 286.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.2 GB. [2020-10-11 16:11:10,655 INFO L168 Benchmark]: Boogie Preprocessor took 22.09 ms. Allocated memory is still 313.0 MB. Free memory was 286.0 MB in the beginning and 283.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:11:10,655 INFO L168 Benchmark]: RCFGBuilder took 412.16 ms. Allocated memory is still 313.0 MB. Free memory was 283.4 MB in the beginning and 261.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-11 16:11:10,656 INFO L168 Benchmark]: TraceAbstraction took 8590.21 ms. Allocated memory was 313.0 MB in the beginning and 463.5 MB in the end (delta: 150.5 MB). Free memory was 261.3 MB in the beginning and 188.0 MB in the end (delta: 73.3 MB). Peak memory consumption was 223.8 MB. Max. memory is 14.2 GB. [2020-10-11 16:11:10,660 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 317.83 ms. Allocated memory was 250.6 MB in the beginning and 313.0 MB in the end (delta: 62.4 MB). Free memory was 206.5 MB in the beginning and 287.2 MB in the end (delta: -80.7 MB). Peak memory consumption was 27.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 34.06 ms. Allocated memory is still 313.0 MB. Free memory was 287.2 MB in the beginning and 286.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 22.09 ms. Allocated memory is still 313.0 MB. Free memory was 286.0 MB in the beginning and 283.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 412.16 ms. Allocated memory is still 313.0 MB. Free memory was 283.4 MB in the beginning and 261.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 8590.21 ms. Allocated memory was 313.0 MB in the beginning and 463.5 MB in the end (delta: 150.5 MB). Free memory was 261.3 MB in the beginning and 188.0 MB in the end (delta: 73.3 MB). Peak memory consumption was 223.8 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 230 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 23 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 32 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 89 PlacesBefore, 28 PlacesAfterwards, 83 TransitionsBefore, 24 TransitionsAfterwards, 334 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 63 TotalNumberOfCompositions, 1127 MoverChecksTotal - PositiveResult [Line: 19]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 45]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 83 SDtfs, 381 SDslu, 125 SDs, 0 SdLazy, 1725 SolverSat, 177 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 174 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred 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: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 28171 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...