/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-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 23:59:40,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 23:59:40,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 23:59:40,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-13 23:59:40,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-13 23:59:40,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-13 23:59:40,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-13 23:59:40,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-13 23:59:40,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-13 23:59:40,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-13 23:59:40,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-13 23:59:40,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-13 23:59:40,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-13 23:59:40,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-13 23:59:40,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-13 23:59:40,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-13 23:59:40,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-13 23:59:40,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-13 23:59:40,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-13 23:59:40,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-13 23:59:40,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-13 23:59:40,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-13 23:59:40,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-13 23:59:40,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-13 23:59:40,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-13 23:59:40,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 23:59:40,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 23:59:40,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 23:59:40,150 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 [2021-07-13 23:59:40,185 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 23:59:40,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 23:59:40,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 23:59:40,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 23:59:40,188 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 23:59:40,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 23:59:40,188 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 23:59:40,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 23:59:40,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 23:59:40,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 23:59:40,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 23:59:40,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 23:59:40,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 23:59:40,190 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 23:59:40,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 23:59:40,190 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 23:59:40,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 23:59:40,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 23:59:40,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 23:59:40,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 23:59:40,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 23:59:40,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 23:59:40,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 23:59:40,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 23:59:40,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 23:59:40,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 23:59:40,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 23:59:40,192 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 23:59:40,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 23:59:40,192 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-13 23:59:40,193 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 23:59:40,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 23:59:40,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 23:59:40,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 23:59:40,499 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-13 23:59:40,500 INFO L275 PluginConnector]: CDTParser initialized [2021-07-13 23:59:40,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2021-07-13 23:59:40,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31042cbb4/9725642b2ea74ebc9abe457fb41b1dd6/FLAG4fb5d8bc8 [2021-07-13 23:59:41,063 INFO L306 CDTParser]: Found 1 translation units. [2021-07-13 23:59:41,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2021-07-13 23:59:41,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31042cbb4/9725642b2ea74ebc9abe457fb41b1dd6/FLAG4fb5d8bc8 [2021-07-13 23:59:41,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31042cbb4/9725642b2ea74ebc9abe457fb41b1dd6 [2021-07-13 23:59:41,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 23:59:41,597 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-13 23:59:41,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-13 23:59:41,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-13 23:59:41,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-13 23:59:41,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:59:41" (1/1) ... [2021-07-13 23:59:41,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55bdc6d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:41, skipping insertion in model container [2021-07-13 23:59:41,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:59:41" (1/1) ... [2021-07-13 23:59:41,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-13 23:59:41,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-13 23:59:41,772 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-07-13 23:59:41,931 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-atomic/lamport.i[32156,32169] [2021-07-13 23:59:41,938 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-atomic/lamport.i[34083,34096] [2021-07-13 23:59:41,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 23:59:41,948 INFO L203 MainTranslator]: Completed pre-run [2021-07-13 23:59:41,961 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-07-13 23:59:41,980 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-atomic/lamport.i[32156,32169] [2021-07-13 23:59:41,983 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-atomic/lamport.i[34083,34096] [2021-07-13 23:59:41,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 23:59:42,020 INFO L208 MainTranslator]: Completed translation [2021-07-13 23:59:42,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:42 WrapperNode [2021-07-13 23:59:42,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-13 23:59:42,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 23:59:42,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 23:59:42,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 23:59:42,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:42" (1/1) ... [2021-07-13 23:59:42,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:42" (1/1) ... [2021-07-13 23:59:42,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 23:59:42,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 23:59:42,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 23:59:42,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 23:59:42,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:42" (1/1) ... [2021-07-13 23:59:42,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:42" (1/1) ... [2021-07-13 23:59:42,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:42" (1/1) ... [2021-07-13 23:59:42,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:42" (1/1) ... [2021-07-13 23:59:42,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:42" (1/1) ... [2021-07-13 23:59:42,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:42" (1/1) ... [2021-07-13 23:59:42,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:42" (1/1) ... [2021-07-13 23:59:42,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 23:59:42,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 23:59:42,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 23:59:42,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 23:59:42,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:42" (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 [2021-07-13 23:59:42,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-13 23:59:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-07-13 23:59:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-07-13 23:59:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-07-13 23:59:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-07-13 23:59:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-13 23:59:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-13 23:59:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-13 23:59:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-13 23:59:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-13 23:59:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-13 23:59:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 23:59:42,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 23:59:42,189 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 23:59:42,589 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 23:59:42,589 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-13 23:59:42,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:59:42 BoogieIcfgContainer [2021-07-13 23:59:42,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 23:59:42,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 23:59:42,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 23:59:42,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 23:59:42,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:59:41" (1/3) ... [2021-07-13 23:59:42,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6211f4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:59:42, skipping insertion in model container [2021-07-13 23:59:42,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:59:42" (2/3) ... [2021-07-13 23:59:42,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6211f4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:59:42, skipping insertion in model container [2021-07-13 23:59:42,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:59:42" (3/3) ... [2021-07-13 23:59:42,598 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2021-07-13 23:59:42,602 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 23:59:42,603 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 23:59:42,603 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-07-13 23:59:42,604 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 23:59:42,631 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,631 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,632 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,632 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,632 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,632 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,632 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,632 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,633 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,633 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,633 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,634 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,634 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,634 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,634 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,634 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,635 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,635 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,635 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,635 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,635 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,636 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,636 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,636 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,636 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,636 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,636 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,637 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,637 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,637 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,637 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,637 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,638 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,638 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,638 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,638 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,638 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,638 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,639 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,639 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,639 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,639 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,639 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,639 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,639 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,640 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,640 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,640 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,640 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,640 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,640 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,641 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,641 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,641 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,641 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,642 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,642 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,642 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,642 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,642 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,642 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,642 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,643 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,643 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,643 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,644 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,644 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,644 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,644 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,644 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,644 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,645 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,645 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,645 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,645 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,645 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,646 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,646 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,646 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,646 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,647 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,647 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,647 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,647 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,647 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,647 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,653 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,654 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,654 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,654 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,654 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,654 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,654 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,659 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,659 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,659 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,659 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,660 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,660 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,660 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 23:59:42,669 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-13 23:59:42,689 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-13 23:59:42,706 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 23:59:42,706 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 23:59:42,706 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 23:59:42,706 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 23:59:42,706 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 23:59:42,706 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 23:59:42,707 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 23:59:42,707 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr1Thread1of1ForFork1======== [2021-07-13 23:59:43,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 3719 states, 3503 states have (on average 1.9426206109049386) internal successors, (6805), 3718 states have internal predecessors, (6805), 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) [2021-07-13 23:59:43,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-07-13 23:59:43,182 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:43,183 INFO L508 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] [2021-07-13 23:59:43,183 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:43,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:43,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1915636410, now seen corresponding path program 1 times [2021-07-13 23:59:43,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:43,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809129824] [2021-07-13 23:59:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:43,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:43,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:43,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:43,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:43,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:43,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809129824] [2021-07-13 23:59:43,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809129824] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:43,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:43,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-13 23:59:43,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769638237] [2021-07-13 23:59:43,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-13 23:59:43,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:43,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-13 23:59:43,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-13 23:59:43,371 INFO L87 Difference]: Start difference. First operand has 3719 states, 3503 states have (on average 1.9426206109049386) internal successors, (6805), 3718 states have internal predecessors, (6805), 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 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2021-07-13 23:59:43,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:43,431 INFO L93 Difference]: Finished difference Result 3719 states and 5944 transitions. [2021-07-13 23:59:43,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:59:43,432 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 25 [2021-07-13 23:59:43,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:43,460 INFO L225 Difference]: With dead ends: 3719 [2021-07-13 23:59:43,460 INFO L226 Difference]: Without dead ends: 2991 [2021-07-13 23:59:43,461 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-13 23:59:43,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2021-07-13 23:59:43,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 2991. [2021-07-13 23:59:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2983 states have (on average 1.732484076433121) internal successors, (5168), 2990 states have internal predecessors, (5168), 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) [2021-07-13 23:59:43,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 5168 transitions. [2021-07-13 23:59:43,601 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 5168 transitions. Word has length 25 [2021-07-13 23:59:43,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:43,601 INFO L482 AbstractCegarLoop]: Abstraction has 2991 states and 5168 transitions. [2021-07-13 23:59:43,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2021-07-13 23:59:43,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 5168 transitions. [2021-07-13 23:59:43,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-07-13 23:59:43,605 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:43,605 INFO L508 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] [2021-07-13 23:59:43,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 23:59:43,606 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:43,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:43,609 INFO L82 PathProgramCache]: Analyzing trace with hash -977585031, now seen corresponding path program 1 times [2021-07-13 23:59:43,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:43,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503681497] [2021-07-13 23:59:43,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:43,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:43,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:43,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:43,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:43,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:43,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:43,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:43,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:43,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503681497] [2021-07-13 23:59:43,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503681497] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:43,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:43,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 23:59:43,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291522427] [2021-07-13 23:59:43,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 23:59:43,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:43,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 23:59:43,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 23:59:43,687 INFO L87 Difference]: Start difference. First operand 2991 states and 5168 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-07-13 23:59:43,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:43,736 INFO L93 Difference]: Finished difference Result 2799 states and 4824 transitions. [2021-07-13 23:59:43,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 23:59:43,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-07-13 23:59:43,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:43,747 INFO L225 Difference]: With dead ends: 2799 [2021-07-13 23:59:43,747 INFO L226 Difference]: Without dead ends: 2347 [2021-07-13 23:59:43,748 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 23:59:43,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2021-07-13 23:59:43,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2347. [2021-07-13 23:59:43,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 2339 states have (on average 1.7374946558358273) internal successors, (4064), 2346 states have internal predecessors, (4064), 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) [2021-07-13 23:59:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 4064 transitions. [2021-07-13 23:59:43,838 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 4064 transitions. Word has length 33 [2021-07-13 23:59:43,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:43,839 INFO L482 AbstractCegarLoop]: Abstraction has 2347 states and 4064 transitions. [2021-07-13 23:59:43,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2021-07-13 23:59:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 4064 transitions. [2021-07-13 23:59:43,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 23:59:43,854 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:43,854 INFO L508 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] [2021-07-13 23:59:43,855 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 23:59:43,855 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:43,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:43,859 INFO L82 PathProgramCache]: Analyzing trace with hash -882747067, now seen corresponding path program 1 times [2021-07-13 23:59:43,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:43,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280532202] [2021-07-13 23:59:43,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:43,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:43,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:43,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:43,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:43,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:43,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:43,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:43,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:43,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:43,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:43,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280532202] [2021-07-13 23:59:43,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280532202] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:43,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:43,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 23:59:43,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162782583] [2021-07-13 23:59:43,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 23:59:43,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:43,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 23:59:43,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 23:59:43,958 INFO L87 Difference]: Start difference. First operand 2347 states and 4064 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-07-13 23:59:44,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:44,067 INFO L93 Difference]: Finished difference Result 7277 states and 12938 transitions. [2021-07-13 23:59:44,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 23:59:44,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-07-13 23:59:44,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:44,105 INFO L225 Difference]: With dead ends: 7277 [2021-07-13 23:59:44,105 INFO L226 Difference]: Without dead ends: 7277 [2021-07-13 23:59:44,106 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 23:59:44,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7277 states. [2021-07-13 23:59:44,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7277 to 2767. [2021-07-13 23:59:44,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2767 states, 2759 states have (on average 1.7499093874592244) internal successors, (4828), 2766 states have internal predecessors, (4828), 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) [2021-07-13 23:59:44,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 4828 transitions. [2021-07-13 23:59:44,220 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 4828 transitions. Word has length 50 [2021-07-13 23:59:44,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:44,222 INFO L482 AbstractCegarLoop]: Abstraction has 2767 states and 4828 transitions. [2021-07-13 23:59:44,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-07-13 23:59:44,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 4828 transitions. [2021-07-13 23:59:44,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 23:59:44,228 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:44,228 INFO L508 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] [2021-07-13 23:59:44,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 23:59:44,228 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:44,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:44,230 INFO L82 PathProgramCache]: Analyzing trace with hash 835687091, now seen corresponding path program 2 times [2021-07-13 23:59:44,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:44,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42106234] [2021-07-13 23:59:44,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:44,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:44,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:44,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:44,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:44,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:44,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:44,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:44,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:44,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:44,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42106234] [2021-07-13 23:59:44,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42106234] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:44,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:44,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 23:59:44,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25873550] [2021-07-13 23:59:44,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 23:59:44,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:44,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 23:59:44,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 23:59:44,312 INFO L87 Difference]: Start difference. First operand 2767 states and 4828 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-07-13 23:59:44,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:44,450 INFO L93 Difference]: Finished difference Result 5987 states and 10466 transitions. [2021-07-13 23:59:44,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 23:59:44,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-07-13 23:59:44,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:44,465 INFO L225 Difference]: With dead ends: 5987 [2021-07-13 23:59:44,466 INFO L226 Difference]: Without dead ends: 3093 [2021-07-13 23:59:44,466 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 23:59:44,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2021-07-13 23:59:44,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 2841. [2021-07-13 23:59:44,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2841 states, 2833 states have (on average 1.7585598305683021) internal successors, (4982), 2840 states have internal predecessors, (4982), 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) [2021-07-13 23:59:44,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 4982 transitions. [2021-07-13 23:59:44,564 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 4982 transitions. Word has length 50 [2021-07-13 23:59:44,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:44,566 INFO L482 AbstractCegarLoop]: Abstraction has 2841 states and 4982 transitions. [2021-07-13 23:59:44,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-07-13 23:59:44,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 4982 transitions. [2021-07-13 23:59:44,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 23:59:44,570 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:44,570 INFO L508 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] [2021-07-13 23:59:44,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 23:59:44,570 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:44,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:44,571 INFO L82 PathProgramCache]: Analyzing trace with hash -644594175, now seen corresponding path program 3 times [2021-07-13 23:59:44,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:44,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972421876] [2021-07-13 23:59:44,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:44,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:44,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:44,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:44,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:44,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:44,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:44,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:44,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:44,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:44,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:44,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972421876] [2021-07-13 23:59:44,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972421876] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:44,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:44,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 23:59:44,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087412682] [2021-07-13 23:59:44,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 23:59:44,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:44,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 23:59:44,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 23:59:44,641 INFO L87 Difference]: Start difference. First operand 2841 states and 4982 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-07-13 23:59:44,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:44,737 INFO L93 Difference]: Finished difference Result 4145 states and 7186 transitions. [2021-07-13 23:59:44,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 23:59:44,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-07-13 23:59:44,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:44,745 INFO L225 Difference]: With dead ends: 4145 [2021-07-13 23:59:44,746 INFO L226 Difference]: Without dead ends: 1713 [2021-07-13 23:59:44,746 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 23:59:44,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-07-13 23:59:44,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1617. [2021-07-13 23:59:44,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1609 states have (on average 1.5848353014294594) internal successors, (2550), 1616 states have internal predecessors, (2550), 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) [2021-07-13 23:59:44,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2550 transitions. [2021-07-13 23:59:44,785 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2550 transitions. Word has length 50 [2021-07-13 23:59:44,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:44,785 INFO L482 AbstractCegarLoop]: Abstraction has 1617 states and 2550 transitions. [2021-07-13 23:59:44,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-07-13 23:59:44,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2550 transitions. [2021-07-13 23:59:44,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 23:59:44,789 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:44,789 INFO L508 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] [2021-07-13 23:59:44,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 23:59:44,789 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:44,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:44,790 INFO L82 PathProgramCache]: Analyzing trace with hash -800444091, now seen corresponding path program 4 times [2021-07-13 23:59:44,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:44,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578983260] [2021-07-13 23:59:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:44,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:44,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:44,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:44,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:44,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:44,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:44,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:44,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:44,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:44,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:44,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578983260] [2021-07-13 23:59:44,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578983260] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:44,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:44,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 23:59:44,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215969763] [2021-07-13 23:59:44,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 23:59:44,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:44,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 23:59:44,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 23:59:44,851 INFO L87 Difference]: Start difference. First operand 1617 states and 2550 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-07-13 23:59:44,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:44,893 INFO L93 Difference]: Finished difference Result 3465 states and 5386 transitions. [2021-07-13 23:59:44,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 23:59:44,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-07-13 23:59:44,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:44,907 INFO L225 Difference]: With dead ends: 3465 [2021-07-13 23:59:44,907 INFO L226 Difference]: Without dead ends: 3189 [2021-07-13 23:59:44,907 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 23:59:44,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2021-07-13 23:59:44,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 1661. [2021-07-13 23:59:44,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1653 states have (on average 1.557168784029038) internal successors, (2574), 1660 states have internal predecessors, (2574), 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) [2021-07-13 23:59:44,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2574 transitions. [2021-07-13 23:59:44,951 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2574 transitions. Word has length 50 [2021-07-13 23:59:44,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:44,951 INFO L482 AbstractCegarLoop]: Abstraction has 1661 states and 2574 transitions. [2021-07-13 23:59:44,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-07-13 23:59:44,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2574 transitions. [2021-07-13 23:59:44,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-13 23:59:44,954 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:44,954 INFO L508 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] [2021-07-13 23:59:44,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 23:59:44,954 INFO L430 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:44,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:44,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1911320213, now seen corresponding path program 1 times [2021-07-13 23:59:44,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:44,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491507558] [2021-07-13 23:59:44,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:44,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:44,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:44,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:44,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:45,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-13 23:59:45,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:45,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:45,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:45,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491507558] [2021-07-13 23:59:45,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491507558] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:45,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:45,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 23:59:45,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868228609] [2021-07-13 23:59:45,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 23:59:45,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:45,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 23:59:45,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 23:59:45,010 INFO L87 Difference]: Start difference. First operand 1661 states and 2574 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-07-13 23:59:45,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:45,035 INFO L93 Difference]: Finished difference Result 1421 states and 2166 transitions. [2021-07-13 23:59:45,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 23:59:45,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2021-07-13 23:59:45,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:45,041 INFO L225 Difference]: With dead ends: 1421 [2021-07-13 23:59:45,041 INFO L226 Difference]: Without dead ends: 1333 [2021-07-13 23:59:45,042 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 23:59:45,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2021-07-13 23:59:45,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1285. [2021-07-13 23:59:45,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1277 states have (on average 1.5458104933437744) internal successors, (1974), 1284 states have internal predecessors, (1974), 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) [2021-07-13 23:59:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1974 transitions. [2021-07-13 23:59:45,075 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1974 transitions. Word has length 55 [2021-07-13 23:59:45,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:45,076 INFO L482 AbstractCegarLoop]: Abstraction has 1285 states and 1974 transitions. [2021-07-13 23:59:45,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-07-13 23:59:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1974 transitions. [2021-07-13 23:59:45,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-13 23:59:45,078 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:45,079 INFO L508 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] [2021-07-13 23:59:45,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 23:59:45,079 INFO L430 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:45,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:45,079 INFO L82 PathProgramCache]: Analyzing trace with hash 2023071202, now seen corresponding path program 1 times [2021-07-13 23:59:45,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:45,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880779331] [2021-07-13 23:59:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:45,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:45,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:45,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-13 23:59:45,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:45,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:45,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:45,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880779331] [2021-07-13 23:59:45,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880779331] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:45,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:45,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 23:59:45,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273617614] [2021-07-13 23:59:45,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 23:59:45,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:45,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 23:59:45,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 23:59:45,120 INFO L87 Difference]: Start difference. First operand 1285 states and 1974 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-07-13 23:59:45,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:45,134 INFO L93 Difference]: Finished difference Result 786 states and 1223 transitions. [2021-07-13 23:59:45,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 23:59:45,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2021-07-13 23:59:45,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:45,135 INFO L225 Difference]: With dead ends: 786 [2021-07-13 23:59:45,135 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 23:59:45,135 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 23:59:45,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 23:59:45,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 23:59:45,136 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) [2021-07-13 23:59:45,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 23:59:45,136 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2021-07-13 23:59:45,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:45,136 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 23:59:45,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-07-13 23:59:45,136 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 23:59:45,136 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 23:59:45,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 23:59:45,137 INFO L301 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork1 was SAFE (1/3) [2021-07-13 23:59:45,139 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-07-13 23:59:45,139 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 23:59:45,139 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 23:59:45,139 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 23:59:45,139 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 23:59:45,140 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 23:59:45,140 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 23:59:45,140 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 23:59:45,140 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 23:59:45,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 200 states have (on average 1.415) internal successors, (283), 211 states have internal predecessors, (283), 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) [2021-07-13 23:59:45,152 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 23:59:45,152 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/3) [2021-07-13 23:59:45,153 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-13 23:59:45,153 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 23:59:45,153 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 23:59:45,153 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 23:59:45,154 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 23:59:45,154 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 23:59:45,154 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 23:59:45,154 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 23:59:45,154 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr2Thread1of1ForFork0======== [2021-07-13 23:59:45,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 3749 states, 3575 states have (on average 2.456783216783217) internal successors, (8783), 3748 states have internal predecessors, (8783), 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) [2021-07-13 23:59:45,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-07-13 23:59:45,421 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:45,421 INFO L508 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] [2021-07-13 23:59:45,421 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:45,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:45,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1479514535, now seen corresponding path program 1 times [2021-07-13 23:59:45,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:45,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342865689] [2021-07-13 23:59:45,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:45,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:45,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:45,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:45,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342865689] [2021-07-13 23:59:45,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342865689] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:45,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:45,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-13 23:59:45,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495244456] [2021-07-13 23:59:45,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-13 23:59:45,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:45,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-13 23:59:45,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-13 23:59:45,445 INFO L87 Difference]: Start difference. First operand has 3749 states, 3575 states have (on average 2.456783216783217) internal successors, (8783), 3748 states have internal predecessors, (8783), 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 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-07-13 23:59:45,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:45,467 INFO L93 Difference]: Finished difference Result 3749 states and 7931 transitions. [2021-07-13 23:59:45,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 23:59:45,467 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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 31 [2021-07-13 23:59:45,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:45,479 INFO L225 Difference]: With dead ends: 3749 [2021-07-13 23:59:45,479 INFO L226 Difference]: Without dead ends: 2892 [2021-07-13 23:59:45,479 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-13 23:59:45,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2021-07-13 23:59:45,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2892. [2021-07-13 23:59:45,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2888 states have (on average 2.339335180055402) internal successors, (6756), 2891 states have internal predecessors, (6756), 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) [2021-07-13 23:59:45,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 6756 transitions. [2021-07-13 23:59:45,560 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 6756 transitions. Word has length 31 [2021-07-13 23:59:45,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:45,561 INFO L482 AbstractCegarLoop]: Abstraction has 2892 states and 6756 transitions. [2021-07-13 23:59:45,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-07-13 23:59:45,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 6756 transitions. [2021-07-13 23:59:45,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-13 23:59:45,562 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:45,562 INFO L508 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] [2021-07-13 23:59:45,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-13 23:59:45,562 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:45,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:45,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1653746266, now seen corresponding path program 1 times [2021-07-13 23:59:45,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:45,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622897014] [2021-07-13 23:59:45,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:45,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:45,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-13 23:59:45,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:45,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:45,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622897014] [2021-07-13 23:59:45,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622897014] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:45,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:45,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 23:59:45,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171268525] [2021-07-13 23:59:45,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 23:59:45,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:45,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 23:59:45,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 23:59:45,593 INFO L87 Difference]: Start difference. First operand 2892 states and 6756 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2021-07-13 23:59:45,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:45,614 INFO L93 Difference]: Finished difference Result 2726 states and 6364 transitions. [2021-07-13 23:59:45,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 23:59:45,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2021-07-13 23:59:45,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:45,629 INFO L225 Difference]: With dead ends: 2726 [2021-07-13 23:59:45,629 INFO L226 Difference]: Without dead ends: 2126 [2021-07-13 23:59:45,629 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 23:59:45,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2021-07-13 23:59:45,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 2126. [2021-07-13 23:59:45,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 2124 states have (on average 2.3300376647834273) internal successors, (4949), 2125 states have internal predecessors, (4949), 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) [2021-07-13 23:59:45,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 4949 transitions. [2021-07-13 23:59:45,674 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 4949 transitions. Word has length 39 [2021-07-13 23:59:45,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:45,674 INFO L482 AbstractCegarLoop]: Abstraction has 2126 states and 4949 transitions. [2021-07-13 23:59:45,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2021-07-13 23:59:45,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 4949 transitions. [2021-07-13 23:59:45,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 23:59:45,680 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:45,680 INFO L508 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] [2021-07-13 23:59:45,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-13 23:59:45,680 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:45,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:45,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1436045677, now seen corresponding path program 1 times [2021-07-13 23:59:45,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:45,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554304656] [2021-07-13 23:59:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:45,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:45,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:45,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:45,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:45,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:45,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554304656] [2021-07-13 23:59:45,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554304656] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:45,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:45,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 23:59:45,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029050779] [2021-07-13 23:59:45,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 23:59:45,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:45,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 23:59:45,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 23:59:45,711 INFO L87 Difference]: Start difference. First operand 2126 states and 4949 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-07-13 23:59:45,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:45,772 INFO L93 Difference]: Finished difference Result 7204 states and 16999 transitions. [2021-07-13 23:59:45,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 23:59:45,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-07-13 23:59:45,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:45,791 INFO L225 Difference]: With dead ends: 7204 [2021-07-13 23:59:45,792 INFO L226 Difference]: Without dead ends: 7204 [2021-07-13 23:59:45,792 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 23:59:45,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7204 states. [2021-07-13 23:59:45,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7204 to 2586. [2021-07-13 23:59:45,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2586 states, 2584 states have (on average 2.3490712074303404) internal successors, (6070), 2585 states have internal predecessors, (6070), 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) [2021-07-13 23:59:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 6070 transitions. [2021-07-13 23:59:45,894 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 6070 transitions. Word has length 50 [2021-07-13 23:59:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:45,894 INFO L482 AbstractCegarLoop]: Abstraction has 2586 states and 6070 transitions. [2021-07-13 23:59:45,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-07-13 23:59:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 6070 transitions. [2021-07-13 23:59:45,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 23:59:45,899 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:45,899 INFO L508 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] [2021-07-13 23:59:45,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-13 23:59:45,899 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:45,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:45,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1295372163, now seen corresponding path program 2 times [2021-07-13 23:59:45,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:45,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452163356] [2021-07-13 23:59:45,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:45,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:45,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:45,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:45,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:45,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:45,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:45,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452163356] [2021-07-13 23:59:45,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452163356] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:45,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:45,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 23:59:45,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281907638] [2021-07-13 23:59:45,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 23:59:45,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:45,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 23:59:45,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 23:59:45,924 INFO L87 Difference]: Start difference. First operand 2586 states and 6070 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-07-13 23:59:46,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:46,040 INFO L93 Difference]: Finished difference Result 5675 states and 13240 transitions. [2021-07-13 23:59:46,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 23:59:46,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-07-13 23:59:46,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:46,049 INFO L225 Difference]: With dead ends: 5675 [2021-07-13 23:59:46,050 INFO L226 Difference]: Without dead ends: 3116 [2021-07-13 23:59:46,050 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 23:59:46,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2021-07-13 23:59:46,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2700. [2021-07-13 23:59:46,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2698 states have (on average 2.3106004447739066) internal successors, (6234), 2699 states have internal predecessors, (6234), 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) [2021-07-13 23:59:46,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 6234 transitions. [2021-07-13 23:59:46,116 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 6234 transitions. Word has length 50 [2021-07-13 23:59:46,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:46,116 INFO L482 AbstractCegarLoop]: Abstraction has 2700 states and 6234 transitions. [2021-07-13 23:59:46,116 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-07-13 23:59:46,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 6234 transitions. [2021-07-13 23:59:46,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 23:59:46,120 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:46,120 INFO L508 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] [2021-07-13 23:59:46,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-13 23:59:46,120 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:46,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:46,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1449290059, now seen corresponding path program 3 times [2021-07-13 23:59:46,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:46,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825145745] [2021-07-13 23:59:46,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:46,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:46,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:46,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:46,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:46,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:46,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:46,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:46,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:46,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:46,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825145745] [2021-07-13 23:59:46,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825145745] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:46,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:46,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 23:59:46,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903233688] [2021-07-13 23:59:46,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 23:59:46,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:46,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 23:59:46,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 23:59:46,146 INFO L87 Difference]: Start difference. First operand 2700 states and 6234 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-07-13 23:59:46,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:46,240 INFO L93 Difference]: Finished difference Result 4251 states and 9690 transitions. [2021-07-13 23:59:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 23:59:46,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-07-13 23:59:46,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:46,244 INFO L225 Difference]: With dead ends: 4251 [2021-07-13 23:59:46,244 INFO L226 Difference]: Without dead ends: 1663 [2021-07-13 23:59:46,245 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 23:59:46,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2021-07-13 23:59:46,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1588. [2021-07-13 23:59:46,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1586 states have (on average 2.0258511979823455) internal successors, (3213), 1587 states have internal predecessors, (3213), 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) [2021-07-13 23:59:46,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 3213 transitions. [2021-07-13 23:59:46,272 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 3213 transitions. Word has length 50 [2021-07-13 23:59:46,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:46,273 INFO L482 AbstractCegarLoop]: Abstraction has 1588 states and 3213 transitions. [2021-07-13 23:59:46,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-07-13 23:59:46,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 3213 transitions. [2021-07-13 23:59:46,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 23:59:46,275 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:46,275 INFO L508 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] [2021-07-13 23:59:46,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-13 23:59:46,275 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:46,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:46,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1457054833, now seen corresponding path program 4 times [2021-07-13 23:59:46,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:46,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695539018] [2021-07-13 23:59:46,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:46,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:46,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:46,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:46,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:46,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:46,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:46,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:46,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:46,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:46,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:46,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695539018] [2021-07-13 23:59:46,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695539018] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:46,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:46,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 23:59:46,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397851235] [2021-07-13 23:59:46,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 23:59:46,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:46,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 23:59:46,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 23:59:46,327 INFO L87 Difference]: Start difference. First operand 1588 states and 3213 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-07-13 23:59:46,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:46,364 INFO L93 Difference]: Finished difference Result 3545 states and 7074 transitions. [2021-07-13 23:59:46,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 23:59:46,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2021-07-13 23:59:46,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:46,372 INFO L225 Difference]: With dead ends: 3545 [2021-07-13 23:59:46,372 INFO L226 Difference]: Without dead ends: 3290 [2021-07-13 23:59:46,372 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 23:59:46,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2021-07-13 23:59:46,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 1620. [2021-07-13 23:59:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1618 states have (on average 1.9944375772558713) internal successors, (3227), 1619 states have internal predecessors, (3227), 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) [2021-07-13 23:59:46,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 3227 transitions. [2021-07-13 23:59:46,408 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 3227 transitions. Word has length 50 [2021-07-13 23:59:46,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:46,408 INFO L482 AbstractCegarLoop]: Abstraction has 1620 states and 3227 transitions. [2021-07-13 23:59:46,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-07-13 23:59:46,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 3227 transitions. [2021-07-13 23:59:46,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-13 23:59:46,413 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:46,413 INFO L508 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] [2021-07-13 23:59:46,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-13 23:59:46,413 INFO L430 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:46,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:46,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1301536977, now seen corresponding path program 1 times [2021-07-13 23:59:46,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:46,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80231491] [2021-07-13 23:59:46,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:46,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:46,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:46,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:46,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:46,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:46,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-13 23:59:46,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:46,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:46,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:46,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:46,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80231491] [2021-07-13 23:59:46,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80231491] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:46,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:46,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 23:59:46,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496036469] [2021-07-13 23:59:46,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 23:59:46,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:46,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 23:59:46,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 23:59:46,453 INFO L87 Difference]: Start difference. First operand 1620 states and 3227 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-07-13 23:59:46,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:46,477 INFO L93 Difference]: Finished difference Result 1476 states and 2915 transitions. [2021-07-13 23:59:46,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 23:59:46,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2021-07-13 23:59:46,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:46,480 INFO L225 Difference]: With dead ends: 1476 [2021-07-13 23:59:46,480 INFO L226 Difference]: Without dead ends: 1272 [2021-07-13 23:59:46,481 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 23:59:46,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2021-07-13 23:59:46,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1184. [2021-07-13 23:59:46,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1182 states have (on average 1.982233502538071) internal successors, (2343), 1183 states have internal predecessors, (2343), 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) [2021-07-13 23:59:46,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 2343 transitions. [2021-07-13 23:59:46,500 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 2343 transitions. Word has length 55 [2021-07-13 23:59:46,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:46,501 INFO L482 AbstractCegarLoop]: Abstraction has 1184 states and 2343 transitions. [2021-07-13 23:59:46,501 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-07-13 23:59:46,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 2343 transitions. [2021-07-13 23:59:46,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-13 23:59:46,506 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 23:59:46,506 INFO L508 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] [2021-07-13 23:59:46,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-13 23:59:46,506 INFO L430 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 23:59:46,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 23:59:46,506 INFO L82 PathProgramCache]: Analyzing trace with hash -245096286, now seen corresponding path program 1 times [2021-07-13 23:59:46,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 23:59:46,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122814439] [2021-07-13 23:59:46,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 23:59:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 23:59:46,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:46,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:46,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:46,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-13 23:59:46,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:46,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-13 23:59:46,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-13 23:59:46,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-13 23:59:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 23:59:46,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 23:59:46,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122814439] [2021-07-13 23:59:46,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122814439] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 23:59:46,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 23:59:46,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 23:59:46,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496760255] [2021-07-13 23:59:46,556 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 23:59:46,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 23:59:46,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 23:59:46,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 23:59:46,556 INFO L87 Difference]: Start difference. First operand 1184 states and 2343 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-07-13 23:59:46,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 23:59:46,571 INFO L93 Difference]: Finished difference Result 592 states and 1171 transitions. [2021-07-13 23:59:46,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 23:59:46,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2021-07-13 23:59:46,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 23:59:46,572 INFO L225 Difference]: With dead ends: 592 [2021-07-13 23:59:46,572 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 23:59:46,572 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 23:59:46,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 23:59:46,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 23:59:46,572 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) [2021-07-13 23:59:46,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 23:59:46,573 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2021-07-13 23:59:46,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 23:59:46,573 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 23:59:46,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-07-13 23:59:46,573 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 23:59:46,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 23:59:46,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-13 23:59:46,573 INFO L301 ceAbstractionStarter]: Result for error location thr2Thread1of1ForFork0 was SAFE (3/3) [2021-07-13 23:59:46,573 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 23:59:46,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 11:59:46 BasicIcfg [2021-07-13 23:59:46,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 23:59:46,576 INFO L168 Benchmark]: Toolchain (without parser) took 4979.73 ms. Allocated memory was 194.0 MB in the beginning and 315.6 MB in the end (delta: 121.6 MB). Free memory was 157.3 MB in the beginning and 268.5 MB in the end (delta: -111.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-07-13 23:59:46,577 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 194.0 MB. Free memory is still 175.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 23:59:46,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.25 ms. Allocated memory is still 194.0 MB. Free memory was 157.1 MB in the beginning and 167.6 MB in the end (delta: -10.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-13 23:59:46,579 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.72 ms. Allocated memory is still 194.0 MB. Free memory was 167.6 MB in the beginning and 165.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 23:59:46,579 INFO L168 Benchmark]: Boogie Preprocessor took 52.09 ms. Allocated memory is still 194.0 MB. Free memory was 165.5 MB in the beginning and 164.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 23:59:46,580 INFO L168 Benchmark]: RCFGBuilder took 472.31 ms. Allocated memory is still 194.0 MB. Free memory was 164.0 MB in the beginning and 136.2 MB in the end (delta: 27.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2021-07-13 23:59:46,580 INFO L168 Benchmark]: TraceAbstraction took 3982.76 ms. Allocated memory was 194.0 MB in the beginning and 315.6 MB in the end (delta: 121.6 MB). Free memory was 135.7 MB in the beginning and 268.5 MB in the end (delta: -132.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 23:59:46,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 194.0 MB. Free memory is still 175.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 412.25 ms. Allocated memory is still 194.0 MB. Free memory was 157.1 MB in the beginning and 167.6 MB in the end (delta: -10.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.72 ms. Allocated memory is still 194.0 MB. Free memory was 167.6 MB in the beginning and 165.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.09 ms. Allocated memory is still 194.0 MB. Free memory was 165.5 MB in the beginning and 164.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 472.31 ms. Allocated memory is still 194.0 MB. Free memory was 164.0 MB in the beginning and 136.2 MB in the end (delta: 27.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3982.76 ms. Allocated memory was 194.0 MB in the beginning and 315.6 MB in the end (delta: 121.6 MB). Free memory was 135.7 MB in the beginning and 268.5 MB in the end (delta: -132.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 14044, positive: 11466, positive conditional: 11466, positive unconditional: 0, negative: 2578, negative conditional: 2578, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11626, positive: 11466, positive conditional: 0, positive unconditional: 11466, negative: 160, negative conditional: 0, negative unconditional: 160, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2266, positive: 2226, positive conditional: 0, positive unconditional: 2226, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2266, positive: 2225, positive conditional: 0, positive unconditional: 2225, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 41, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 65, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 63, negative conditional: 0, negative unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11626, positive: 9240, positive conditional: 0, positive unconditional: 9240, negative: 120, negative conditional: 0, negative unconditional: 120, unknown: 2266, unknown conditional: 0, unknown unconditional: 2266] , Statistics on independence cache: Total cache size (in pairs): 2266, Positive cache size: 2226, Positive conditional cache size: 0, Positive unconditional cache size: 2226, Negative cache size: 40, Negative conditional cache size: 0, Negative unconditional cache size: 40, Independence queries for same thread: 2418 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 311, positive: 215, positive conditional: 215, positive unconditional: 0, negative: 96, negative conditional: 96, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 215, positive: 215, positive conditional: 0, positive unconditional: 215, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 215, positive: 215, positive conditional: 0, positive unconditional: 215, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 215, positive: 215, positive conditional: 0, positive unconditional: 215, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 215, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 215, unknown conditional: 0, unknown unconditional: 215] , Statistics on independence cache: Total cache size (in pairs): 215, Positive cache size: 215, Positive conditional cache size: 0, Positive unconditional cache size: 215, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 96 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 15577, positive: 12866, positive conditional: 12866, positive unconditional: 0, negative: 2711, negative conditional: 2711, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 13026, positive: 12866, positive conditional: 0, positive unconditional: 12866, negative: 160, negative conditional: 0, negative unconditional: 160, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2688, positive: 2643, positive conditional: 0, positive unconditional: 2643, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2688, positive: 2641, positive conditional: 0, positive unconditional: 2641, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 47, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 40, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13026, positive: 10223, positive conditional: 0, positive unconditional: 10223, negative: 115, negative conditional: 0, negative unconditional: 115, unknown: 2688, unknown conditional: 0, unknown unconditional: 2688] , Statistics on independence cache: Total cache size (in pairs): 2688, Positive cache size: 2643, Positive conditional cache size: 0, Positive unconditional cache size: 2643, Negative cache size: 45, Negative conditional cache size: 0, Negative unconditional cache size: 45, Independence queries for same thread: 2551 - PositiveResult [Line: 764]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 834]: 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: thr1Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 172 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2433.6ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 53.9ms, AutomataDifference: 686.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 454.6ms, PartialOrderReductionTime: 439.7ms, HoareTripleCheckerStatistics: 1123 SDtfs, 655 SDslu, 1296 SDs, 0 SdLazy, 205 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 163.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 88.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3719occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 545.9ms AutomataMinimizationTime, 8 MinimizatonAttempts, 6434 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.0ms SsaConstructionTime, 104.0ms SatisfiabilityAnalysisTime, 332.6ms InterpolantComputationTime, 368 NumberOfCodeBlocks, 368 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 360 ConstructedInterpolants, 0 QuantifiedInterpolants, 470 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 172 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.1ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 1.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.2ms, PartialOrderReductionTime: 9.2ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=212occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr2Thread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 172 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1420.0ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 33.4ms, AutomataDifference: 478.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 259.3ms, PartialOrderReductionTime: 257.6ms, HoareTripleCheckerStatistics: 1176 SDtfs, 641 SDslu, 1352 SDs, 0 SdLazy, 207 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 160.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3749occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 374.4ms AutomataMinimizationTime, 8 MinimizatonAttempts, 6867 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.0ms SsaConstructionTime, 29.7ms SatisfiabilityAnalysisTime, 183.4ms InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 372 ConstructedInterpolants, 0 QuantifiedInterpolants, 486 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...