/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 15:47:51,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 15:47:51,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 15:47:51,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 15:47:51,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 15:47:51,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 15:47:51,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 15:47:51,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 15:47:51,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 15:47:51,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 15:47:51,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 15:47:51,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-16 15:47:51,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 15:47:51,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 15:47:51,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 15:47:51,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 15:47:51,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 15:47:51,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 15:47:51,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 15:47:51,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 15:47:51,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 15:47:51,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 15:47:51,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 15:47:51,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 15:47:51,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-16 15:47:51,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-16 15:47:51,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-16 15:47:51,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-16 15:47:51,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-16 15:47:51,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-16 15:47:51,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-16 15:47:51,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-16 15:47:51,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-16 15:47:51,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-16 15:47:51,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-16 15:47:51,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-16 15:47:51,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-16 15:47:51,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-16 15:47:51,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-16 15:47:51,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-16 15:47:51,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-16 15:47:51,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-06-16 15:47:51,178 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 15:47:51,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 15:47:51,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 15:47:51,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 15:47:51,182 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 15:47:51,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 15:47:51,183 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 15:47:51,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 15:47:51,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 15:47:51,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 15:47:51,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 15:47:51,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 15:47:51,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 15:47:51,185 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 15:47:51,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 15:47:51,185 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 15:47:51,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 15:47:51,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 15:47:51,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 15:47:51,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 15:47:51,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 15:47:51,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 15:47:51,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 15:47:51,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 15:47:51,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 15:47:51,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 15:47:51,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 15:47:51,187 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 15:47:51,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 15:47:51,188 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 15:47:51,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 15:47:51,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 15:47:51,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 15:47:51,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 15:47:51,582 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-16 15:47:51,583 INFO L275 PluginConnector]: CDTParser initialized [2021-06-16 15:47:51,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2021-06-16 15:47:51,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed5970500/bfee78b933f4450fb0d2b4a40a4005f2/FLAG0d2c4a2aa [2021-06-16 15:47:52,192 INFO L306 CDTParser]: Found 1 translation units. [2021-06-16 15:47:52,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2021-06-16 15:47:52,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed5970500/bfee78b933f4450fb0d2b4a40a4005f2/FLAG0d2c4a2aa [2021-06-16 15:47:52,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed5970500/bfee78b933f4450fb0d2b4a40a4005f2 [2021-06-16 15:47:52,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 15:47:52,485 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-16 15:47:52,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-16 15:47:52,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-16 15:47:52,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-16 15:47:52,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 03:47:52" (1/1) ... [2021-06-16 15:47:52,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c3c18e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:52, skipping insertion in model container [2021-06-16 15:47:52,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 03:47:52" (1/1) ... [2021-06-16 15:47:52,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-16 15:47:52,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-16 15:47:52,716 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i[949,962] [2021-06-16 15:47:52,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 15:47:52,857 INFO L203 MainTranslator]: Completed pre-run [2021-06-16 15:47:52,868 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i[949,962] [2021-06-16 15:47:52,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 15:47:52,984 INFO L208 MainTranslator]: Completed translation [2021-06-16 15:47:52,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:52 WrapperNode [2021-06-16 15:47:52,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-16 15:47:52,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 15:47:52,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 15:47:52,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 15:47:52,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:52" (1/1) ... [2021-06-16 15:47:53,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:52" (1/1) ... [2021-06-16 15:47:53,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 15:47:53,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 15:47:53,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 15:47:53,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 15:47:53,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:52" (1/1) ... [2021-06-16 15:47:53,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:52" (1/1) ... [2021-06-16 15:47:53,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:52" (1/1) ... [2021-06-16 15:47:53,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:52" (1/1) ... [2021-06-16 15:47:53,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:52" (1/1) ... [2021-06-16 15:47:53,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:52" (1/1) ... [2021-06-16 15:47:53,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:52" (1/1) ... [2021-06-16 15:47:53,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 15:47:53,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 15:47:53,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 15:47:53,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 15:47:53,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:52" (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 [2021-06-16 15:47:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-16 15:47:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-16 15:47:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-16 15:47:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-16 15:47:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-16 15:47:53,149 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-16 15:47:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-16 15:47:53,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-16 15:47:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-16 15:47:53,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-16 15:47:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-16 15:47:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-16 15:47:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 15:47:53,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 15:47:53,152 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 15:47:53,518 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 15:47:53,519 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-16 15:47:53,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 03:47:53 BoogieIcfgContainer [2021-06-16 15:47:53,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 15:47:53,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 15:47:53,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 15:47:53,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 15:47:53,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.06 03:47:52" (1/3) ... [2021-06-16 15:47:53,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4e5e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 03:47:53, skipping insertion in model container [2021-06-16 15:47:53,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:52" (2/3) ... [2021-06-16 15:47:53,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4e5e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 03:47:53, skipping insertion in model container [2021-06-16 15:47:53,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 03:47:53" (3/3) ... [2021-06-16 15:47:53,528 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2021-06-16 15:47:53,534 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 15:47:53,534 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 15:47:53,534 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 15:47:53,535 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 15:47:53,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,572 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,572 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,572 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,573 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,573 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,573 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,573 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,573 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,574 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,574 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,575 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,575 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,575 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,575 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,577 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,577 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,578 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,579 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,579 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,579 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,579 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,579 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,579 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,580 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,580 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,580 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,584 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,584 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,586 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,587 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,587 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,588 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,592 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,592 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,592 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,593 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,595 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,595 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,595 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,596 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:53,598 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-16 15:47:53,617 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-16 15:47:53,642 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 15:47:53,642 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 15:47:53,642 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 15:47:53,643 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 15:47:53,643 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 15:47:53,643 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 15:47:53,643 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 15:47:53,643 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 15:47:54,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 8007 states, 6867 states have (on average 2.347604485219164) internal successors, (16121), 8006 states have internal predecessors, (16121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:54,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-06-16 15:47:54,621 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:54,621 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:54,622 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:54,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:54,627 INFO L82 PathProgramCache]: Analyzing trace with hash 217118883, now seen corresponding path program 1 times [2021-06-16 15:47:54,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:54,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510799243] [2021-06-16 15:47:54,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:54,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:54,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:54,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:54,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:54,941 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-16 15:47:54,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 15:47:54,963 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:47:54,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:47:54,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:54,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:55,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:55,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:55,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:55,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:55,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:55,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510799243] [2021-06-16 15:47:55,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510799243] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:55,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:55,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:47:55,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457310731] [2021-06-16 15:47:55,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:47:55,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:55,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:47:55,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:47:55,062 INFO L87 Difference]: Start difference. First operand has 8007 states, 6867 states have (on average 2.347604485219164) internal successors, (16121), 8006 states have internal predecessors, (16121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:55,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:55,488 INFO L93 Difference]: Finished difference Result 15813 states and 32530 transitions. [2021-06-16 15:47:55,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 15:47:55,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-06-16 15:47:55,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:55,538 INFO L225 Difference]: With dead ends: 15813 [2021-06-16 15:47:55,538 INFO L226 Difference]: Without dead ends: 2595 [2021-06-16 15:47:55,546 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 246.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-16 15:47:55,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2021-06-16 15:47:55,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2021. [2021-06-16 15:47:55,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2021 states, 1979 states have (on average 2.23244062657908) internal successors, (4418), 2020 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:55,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 4418 transitions. [2021-06-16 15:47:55,732 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 4418 transitions. Word has length 47 [2021-06-16 15:47:55,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:55,733 INFO L482 AbstractCegarLoop]: Abstraction has 2021 states and 4418 transitions. [2021-06-16 15:47:55,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:55,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 4418 transitions. [2021-06-16 15:47:55,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-16 15:47:55,772 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:55,773 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:55,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 15:47:55,773 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:55,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:55,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1646104388, now seen corresponding path program 1 times [2021-06-16 15:47:55,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:55,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157117199] [2021-06-16 15:47:55,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:55,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:55,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:55,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:55,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:55,865 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-16 15:47:55,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 15:47:55,881 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:47:55,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:47:55,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:55,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:55,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:55,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:55,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:55,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:55,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:55,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157117199] [2021-06-16 15:47:55,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157117199] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:55,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:55,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:47:55,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565819658] [2021-06-16 15:47:55,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:47:55,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:55,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:47:55,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:47:55,927 INFO L87 Difference]: Start difference. First operand 2021 states and 4418 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:56,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:56,152 INFO L93 Difference]: Finished difference Result 3299 states and 7836 transitions. [2021-06-16 15:47:56,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 15:47:56,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-06-16 15:47:56,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:56,164 INFO L225 Difference]: With dead ends: 3299 [2021-06-16 15:47:56,165 INFO L226 Difference]: Without dead ends: 2443 [2021-06-16 15:47:56,165 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 172.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-16 15:47:56,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2443 states. [2021-06-16 15:47:56,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2443 to 1831. [2021-06-16 15:47:56,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1795 states have (on average 2.2440111420612814) internal successors, (4028), 1830 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:56,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 4028 transitions. [2021-06-16 15:47:56,240 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 4028 transitions. Word has length 49 [2021-06-16 15:47:56,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:56,240 INFO L482 AbstractCegarLoop]: Abstraction has 1831 states and 4028 transitions. [2021-06-16 15:47:56,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:56,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 4028 transitions. [2021-06-16 15:47:56,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-16 15:47:56,245 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:56,245 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:56,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 15:47:56,245 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:56,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:56,246 INFO L82 PathProgramCache]: Analyzing trace with hash 774677817, now seen corresponding path program 1 times [2021-06-16 15:47:56,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:56,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426928010] [2021-06-16 15:47:56,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:56,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:56,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:56,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:56,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:56,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:56,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:56,353 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-16 15:47:56,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 15:47:56,366 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:47:56,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:47:56,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:56,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:56,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:56,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:56,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:56,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:56,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:56,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426928010] [2021-06-16 15:47:56,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426928010] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:56,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:56,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 15:47:56,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096841979] [2021-06-16 15:47:56,424 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 15:47:56,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:56,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 15:47:56,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-16 15:47:56,426 INFO L87 Difference]: Start difference. First operand 1831 states and 4028 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:56,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:56,530 INFO L93 Difference]: Finished difference Result 2969 states and 6958 transitions. [2021-06-16 15:47:56,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 15:47:56,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-06-16 15:47:56,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:56,541 INFO L225 Difference]: With dead ends: 2969 [2021-06-16 15:47:56,541 INFO L226 Difference]: Without dead ends: 2121 [2021-06-16 15:47:56,542 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 101.0ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-16 15:47:56,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2021-06-16 15:47:56,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 1745. [2021-06-16 15:47:56,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1709 states have (on average 2.2668227033352837) internal successors, (3874), 1744 states have internal predecessors, (3874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:56,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 3874 transitions. [2021-06-16 15:47:56,597 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 3874 transitions. Word has length 51 [2021-06-16 15:47:56,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:56,597 INFO L482 AbstractCegarLoop]: Abstraction has 1745 states and 3874 transitions. [2021-06-16 15:47:56,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:56,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 3874 transitions. [2021-06-16 15:47:56,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-16 15:47:56,602 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:56,602 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:56,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-16 15:47:56,602 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:56,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:56,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1811760453, now seen corresponding path program 2 times [2021-06-16 15:47:56,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:56,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055229274] [2021-06-16 15:47:56,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:56,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:56,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:56,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:56,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:56,655 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-16 15:47:56,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 15:47:56,665 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:47:56,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:47:56,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:56,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:56,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:56,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:56,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:56,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:56,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:56,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055229274] [2021-06-16 15:47:56,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055229274] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:56,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:56,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:47:56,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687602844] [2021-06-16 15:47:56,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:47:56,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:56,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:47:56,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:47:56,707 INFO L87 Difference]: Start difference. First operand 1745 states and 3874 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:56,917 INFO L93 Difference]: Finished difference Result 2549 states and 5993 transitions. [2021-06-16 15:47:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 15:47:56,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-06-16 15:47:56,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:56,927 INFO L225 Difference]: With dead ends: 2549 [2021-06-16 15:47:56,927 INFO L226 Difference]: Without dead ends: 2109 [2021-06-16 15:47:56,928 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 187.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-16 15:47:56,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2021-06-16 15:47:56,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 1513. [2021-06-16 15:47:56,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1485 states have (on average 2.2585858585858585) internal successors, (3354), 1512 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:56,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 3354 transitions. [2021-06-16 15:47:56,973 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 3354 transitions. Word has length 51 [2021-06-16 15:47:56,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:56,973 INFO L482 AbstractCegarLoop]: Abstraction has 1513 states and 3354 transitions. [2021-06-16 15:47:56,974 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:56,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 3354 transitions. [2021-06-16 15:47:56,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-16 15:47:56,977 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:56,977 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:56,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-16 15:47:56,977 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:56,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:56,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1514197865, now seen corresponding path program 1 times [2021-06-16 15:47:56,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:56,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895703138] [2021-06-16 15:47:56,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:57,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:57,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:57,021 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:47:57,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:47:57,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:57,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:57,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:57,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:57,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:57,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895703138] [2021-06-16 15:47:57,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895703138] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:57,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:57,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 15:47:57,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030282982] [2021-06-16 15:47:57,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 15:47:57,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:57,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 15:47:57,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-16 15:47:57,059 INFO L87 Difference]: Start difference. First operand 1513 states and 3354 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:57,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:57,171 INFO L93 Difference]: Finished difference Result 2449 states and 5784 transitions. [2021-06-16 15:47:57,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 15:47:57,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-06-16 15:47:57,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:57,179 INFO L225 Difference]: With dead ends: 2449 [2021-06-16 15:47:57,179 INFO L226 Difference]: Without dead ends: 1613 [2021-06-16 15:47:57,180 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:47:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2021-06-16 15:47:57,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1293. [2021-06-16 15:47:57,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1273 states have (on average 2.234878240377062) internal successors, (2845), 1292 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 2845 transitions. [2021-06-16 15:47:57,212 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 2845 transitions. Word has length 52 [2021-06-16 15:47:57,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:57,212 INFO L482 AbstractCegarLoop]: Abstraction has 1293 states and 2845 transitions. [2021-06-16 15:47:57,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:57,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 2845 transitions. [2021-06-16 15:47:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-16 15:47:57,215 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:57,215 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:57,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-16 15:47:57,215 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:57,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:57,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1316447516, now seen corresponding path program 1 times [2021-06-16 15:47:57,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:57,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482274746] [2021-06-16 15:47:57,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:57,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:57,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:57,258 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:47:57,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:47:57,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:47:57,282 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:47:57,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:57,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:57,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:57,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482274746] [2021-06-16 15:47:57,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482274746] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:57,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:57,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 15:47:57,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634531247] [2021-06-16 15:47:57,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 15:47:57,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:57,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 15:47:57,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-16 15:47:57,293 INFO L87 Difference]: Start difference. First operand 1293 states and 2845 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:57,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:57,409 INFO L93 Difference]: Finished difference Result 1669 states and 3567 transitions. [2021-06-16 15:47:57,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 15:47:57,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-16 15:47:57,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:57,415 INFO L225 Difference]: With dead ends: 1669 [2021-06-16 15:47:57,415 INFO L226 Difference]: Without dead ends: 1189 [2021-06-16 15:47:57,416 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 88.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:47:57,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2021-06-16 15:47:57,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2021-06-16 15:47:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1169 states have (on average 2.2147134302822926) internal successors, (2589), 1188 states have internal predecessors, (2589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:57,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 2589 transitions. [2021-06-16 15:47:57,455 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 2589 transitions. Word has length 53 [2021-06-16 15:47:57,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:57,455 INFO L482 AbstractCegarLoop]: Abstraction has 1189 states and 2589 transitions. [2021-06-16 15:47:57,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:57,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 2589 transitions. [2021-06-16 15:47:57,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-16 15:47:57,458 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:57,458 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:57,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-16 15:47:57,458 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:57,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:57,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1940869892, now seen corresponding path program 1 times [2021-06-16 15:47:57,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:57,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337710475] [2021-06-16 15:47:57,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:57,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:57,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:57,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:57,549 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:47:57,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:47:57,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:47:57,576 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:47:57,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:57,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:57,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:57,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337710475] [2021-06-16 15:47:57,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337710475] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:57,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:57,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:47:57,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101191887] [2021-06-16 15:47:57,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:47:57,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:57,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:47:57,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:47:57,587 INFO L87 Difference]: Start difference. First operand 1189 states and 2589 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:57,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:57,714 INFO L93 Difference]: Finished difference Result 1187 states and 2422 transitions. [2021-06-16 15:47:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 15:47:57,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-06-16 15:47:57,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:57,718 INFO L225 Difference]: With dead ends: 1187 [2021-06-16 15:47:57,718 INFO L226 Difference]: Without dead ends: 739 [2021-06-16 15:47:57,718 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 103.2ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-16 15:47:57,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2021-06-16 15:47:57,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2021-06-16 15:47:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 721 states have (on average 2.099861303744799) internal successors, (1514), 738 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:57,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1514 transitions. [2021-06-16 15:47:57,734 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1514 transitions. Word has length 54 [2021-06-16 15:47:57,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:57,734 INFO L482 AbstractCegarLoop]: Abstraction has 739 states and 1514 transitions. [2021-06-16 15:47:57,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:57,734 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1514 transitions. [2021-06-16 15:47:57,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-16 15:47:57,736 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:57,736 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:57,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-16 15:47:57,736 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:57,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:57,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1565793501, now seen corresponding path program 1 times [2021-06-16 15:47:57,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:57,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827717842] [2021-06-16 15:47:57,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:57,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:57,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:57,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:57,796 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:47:57,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:47:57,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:57,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:57,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:57,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:57,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827717842] [2021-06-16 15:47:57,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827717842] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:57,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:57,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:47:57,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096187513] [2021-06-16 15:47:57,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:47:57,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:57,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:47:57,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:47:57,837 INFO L87 Difference]: Start difference. First operand 739 states and 1514 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:57,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:57,922 INFO L93 Difference]: Finished difference Result 960 states and 2031 transitions. [2021-06-16 15:47:57,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 15:47:57,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-06-16 15:47:57,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:57,925 INFO L225 Difference]: With dead ends: 960 [2021-06-16 15:47:57,925 INFO L226 Difference]: Without dead ends: 612 [2021-06-16 15:47:57,926 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 79.5ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:47:57,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-06-16 15:47:57,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 540. [2021-06-16 15:47:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 525 states have (on average 1.9942857142857142) internal successors, (1047), 539 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 1047 transitions. [2021-06-16 15:47:57,937 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 1047 transitions. Word has length 56 [2021-06-16 15:47:57,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:57,937 INFO L482 AbstractCegarLoop]: Abstraction has 540 states and 1047 transitions. [2021-06-16 15:47:57,937 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:57,937 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 1047 transitions. [2021-06-16 15:47:57,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-16 15:47:57,938 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:57,938 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:57,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-16 15:47:57,939 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:57,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:57,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1183558331, now seen corresponding path program 2 times [2021-06-16 15:47:57,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:57,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039169695] [2021-06-16 15:47:57,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:57,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:57,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:57,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:57,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:57,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:57,988 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:47:57,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:47:58,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:58,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:47:58,014 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:47:58,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:58,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:58,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:58,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:58,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:58,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039169695] [2021-06-16 15:47:58,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039169695] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:58,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:58,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 15:47:58,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566953557] [2021-06-16 15:47:58,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 15:47:58,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:58,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 15:47:58,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-16 15:47:58,028 INFO L87 Difference]: Start difference. First operand 540 states and 1047 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:58,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:58,104 INFO L93 Difference]: Finished difference Result 282 states and 395 transitions. [2021-06-16 15:47:58,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 15:47:58,105 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-06-16 15:47:58,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:58,105 INFO L225 Difference]: With dead ends: 282 [2021-06-16 15:47:58,105 INFO L226 Difference]: Without dead ends: 0 [2021-06-16 15:47:58,105 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 90.8ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-16 15:47:58,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-16 15:47:58,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-16 15:47:58,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:58,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-16 15:47:58,106 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2021-06-16 15:47:58,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:58,106 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-16 15:47:58,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:58,106 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-16 15:47:58,106 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 15:47:58,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-16 15:47:58,108 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 15:47:58,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 03:47:58 BasicIcfg [2021-06-16 15:47:58,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 15:47:58,111 INFO L168 Benchmark]: Toolchain (without parser) took 5625.96 ms. Allocated memory was 192.9 MB in the beginning and 390.1 MB in the end (delta: 197.1 MB). Free memory was 154.9 MB in the beginning and 188.0 MB in the end (delta: -33.1 MB). Peak memory consumption was 164.5 MB. Max. memory is 8.0 GB. [2021-06-16 15:47:58,111 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 192.9 MB. Free memory is still 173.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 15:47:58,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 497.60 ms. Allocated memory is still 192.9 MB. Free memory was 154.6 MB in the beginning and 153.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-16 15:47:58,112 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.35 ms. Allocated memory is still 192.9 MB. Free memory was 153.4 MB in the beginning and 151.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-16 15:47:58,112 INFO L168 Benchmark]: Boogie Preprocessor took 30.78 ms. Allocated memory is still 192.9 MB. Free memory was 151.3 MB in the beginning and 149.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-16 15:47:58,112 INFO L168 Benchmark]: RCFGBuilder took 460.79 ms. Allocated memory is still 192.9 MB. Free memory was 149.8 MB in the beginning and 126.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-16 15:47:58,113 INFO L168 Benchmark]: TraceAbstraction took 4586.93 ms. Allocated memory was 192.9 MB in the beginning and 390.1 MB in the end (delta: 197.1 MB). Free memory was 126.2 MB in the beginning and 188.0 MB in the end (delta: -61.9 MB). Peak memory consumption was 136.9 MB. Max. memory is 8.0 GB. [2021-06-16 15:47:58,114 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 192.9 MB. Free memory is still 173.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 497.60 ms. Allocated memory is still 192.9 MB. Free memory was 154.6 MB in the beginning and 153.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.35 ms. Allocated memory is still 192.9 MB. Free memory was 153.4 MB in the beginning and 151.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.78 ms. Allocated memory is still 192.9 MB. Free memory was 151.3 MB in the beginning and 149.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 460.79 ms. Allocated memory is still 192.9 MB. Free memory was 149.8 MB in the beginning and 126.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4586.93 ms. Allocated memory was 192.9 MB in the beginning and 390.1 MB in the end (delta: 197.1 MB). Free memory was 126.2 MB in the beginning and 188.0 MB in the end (delta: -61.9 MB). Peak memory consumption was 136.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 28809, positive: 27530, positive conditional: 27530, positive unconditional: 0, negative: 1279, negative conditional: 1279, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 28368, positive: 27530, positive conditional: 0, positive unconditional: 27530, negative: 838, negative conditional: 0, negative unconditional: 838, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 831, positive: 813, positive conditional: 0, positive unconditional: 813, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 831, positive: 809, positive conditional: 0, positive unconditional: 809, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 83, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 28368, positive: 26717, positive conditional: 0, positive unconditional: 26717, negative: 820, negative conditional: 0, negative unconditional: 820, unknown: 831, unknown conditional: 0, unknown unconditional: 831] , Statistics on independence cache: Total cache size (in pairs): 831, Positive cache size: 813, Positive conditional cache size: 0, Positive unconditional cache size: 813, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Independence queries for same thread: 441 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 103 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4467.2ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 117.5ms, AutomataDifference: 1637.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 917.6ms, PartialOrderReductionTime: 901.0ms, HoareTripleCheckerStatistics: 864 SDtfs, 1204 SDslu, 3082 SDs, 0 SdLazy, 381 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 298.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1165.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8007occurred in iteration=0, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 446.6ms AutomataMinimizationTime, 9 MinimizatonAttempts, 2550 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.0ms SsaConstructionTime, 153.2ms SatisfiabilityAnalysisTime, 1000.7ms InterpolantComputationTime, 469 NumberOfCodeBlocks, 469 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 460 ConstructedInterpolants, 0 QuantifiedInterpolants, 1620 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...