java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:17:50,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:17:50,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:17:50,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:17:50,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:17:50,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:17:50,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:17:50,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:17:50,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:17:50,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:17:50,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:17:50,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:17:50,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:17:50,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:17:50,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:17:50,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:17:50,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:17:50,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:17:50,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:17:50,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:17:50,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:17:50,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:17:50,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:17:50,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:17:50,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:17:50,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:17:50,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:17:50,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:17:50,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:17:50,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:17:50,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:17:50,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:17:50,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:17:50,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:17:50,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:17:50,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:17:50,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:17:50,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:17:50,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:17:50,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:17:50,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:17:50,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:17:50,215 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:17:50,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:17:50,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:17:50,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:17:50,217 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:17:50,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:17:50,218 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:17:50,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:17:50,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:17:50,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:17:50,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:17:50,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:17:50,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:17:50,220 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:17:50,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:17:50,220 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:17:50,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:17:50,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:17:50,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:17:50,221 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:17:50,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:17:50,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:17:50,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:17:50,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:17:50,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:17:50,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:17:50,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:17:50,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:17:50,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:17:50,486 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:17:50,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:17:50,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:17:50,512 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:17:50,512 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:17:50,513 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2019-10-14 23:17:50,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6af74aca/abc5dddb87d7474da594f5691f820c3e/FLAG8ba0441d3 [2019-10-14 23:17:51,144 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:17:51,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2019-10-14 23:17:51,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6af74aca/abc5dddb87d7474da594f5691f820c3e/FLAG8ba0441d3 [2019-10-14 23:17:51,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6af74aca/abc5dddb87d7474da594f5691f820c3e [2019-10-14 23:17:51,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:17:51,450 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:17:51,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:51,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:17:51,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:17:51,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:51" (1/1) ... [2019-10-14 23:17:51,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cbcfe5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:51, skipping insertion in model container [2019-10-14 23:17:51,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:51" (1/1) ... [2019-10-14 23:17:51,463 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:17:51,511 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:17:51,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:51,983 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:17:52,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:52,103 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:17:52,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:52 WrapperNode [2019-10-14 23:17:52,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:52,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:17:52,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:17:52,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:17:52,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:52" (1/1) ... [2019-10-14 23:17:52,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:52" (1/1) ... [2019-10-14 23:17:52,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:52" (1/1) ... [2019-10-14 23:17:52,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:52" (1/1) ... [2019-10-14 23:17:52,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:52" (1/1) ... [2019-10-14 23:17:52,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:52" (1/1) ... [2019-10-14 23:17:52,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:52" (1/1) ... [2019-10-14 23:17:52,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:17:52,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:17:52,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:17:52,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:17:52,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:17:52,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:17:52,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:17:52,250 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2019-10-14 23:17:52,250 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2019-10-14 23:17:52,250 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSyncFilterWithTarget [2019-10-14 23:17:52,251 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPnp [2019-10-14 23:17:52,251 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIrpCompletion [2019-10-14 23:17:52,251 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfStartDevice [2019-10-14 23:17:52,251 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRemoveDevice [2019-10-14 23:17:52,252 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSendToNextDriver [2019-10-14 23:17:52,252 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPower [2019-10-14 23:17:52,252 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfForwardIrpSynchronous [2019-10-14 23:17:52,253 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfCreate [2019-10-14 23:17:52,253 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIoCompletion [2019-10-14 23:17:52,254 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDeviceControl [2019-10-14 23:17:52,254 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfShutdownFlush [2019-10-14 23:17:52,256 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfUnload [2019-10-14 23:17:52,256 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRegisterDevice [2019-10-14 23:17:52,256 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2019-10-14 23:17:52,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:17:52,257 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2019-10-14 23:17:52,257 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2019-10-14 23:17:52,257 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2019-10-14 23:17:52,257 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2019-10-14 23:17:52,257 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2019-10-14 23:17:52,258 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2019-10-14 23:17:52,258 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2019-10-14 23:17:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:17:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:17:52,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:17:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-14 23:17:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 23:17:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPnp [2019-10-14 23:17:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIrpCompletion [2019-10-14 23:17:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfStartDevice [2019-10-14 23:17:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRemoveDevice [2019-10-14 23:17:52,259 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSendToNextDriver [2019-10-14 23:17:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPower [2019-10-14 23:17:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfForwardIrpSynchronous [2019-10-14 23:17:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfCreate [2019-10-14 23:17:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIoCompletion [2019-10-14 23:17:52,260 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDeviceControl [2019-10-14 23:17:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfShutdownFlush [2019-10-14 23:17:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRegisterDevice [2019-10-14 23:17:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2019-10-14 23:17:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2019-10-14 23:17:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2019-10-14 23:17:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2019-10-14 23:17:52,261 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2019-10-14 23:17:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2019-10-14 23:17:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2019-10-14 23:17:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2019-10-14 23:17:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSyncFilterWithTarget [2019-10-14 23:17:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfUnload [2019-10-14 23:17:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2019-10-14 23:17:52,262 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:17:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2019-10-14 23:17:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:17:52,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:17:52,667 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:52,841 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2019-10-14 23:17:52,841 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2019-10-14 23:17:52,848 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:52,973 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2019-10-14 23:17:52,973 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2019-10-14 23:17:53,004 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:53,023 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2019-10-14 23:17:53,023 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2019-10-14 23:17:53,029 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:53,043 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2019-10-14 23:17:53,044 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2019-10-14 23:17:53,311 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:53,359 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2019-10-14 23:17:53,360 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2019-10-14 23:17:53,409 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 23:17:53,422 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2019-10-14 23:17:53,422 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2019-10-14 23:17:53,447 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:17:53,448 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:17:53,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:53 BoogieIcfgContainer [2019-10-14 23:17:53,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:17:53,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:17:53,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:17:53,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:17:53,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:17:51" (1/3) ... [2019-10-14 23:17:53,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326d34bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:53, skipping insertion in model container [2019-10-14 23:17:53,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:52" (2/3) ... [2019-10-14 23:17:53,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326d34bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:53, skipping insertion in model container [2019-10-14 23:17:53,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:53" (3/3) ... [2019-10-14 23:17:53,458 INFO L109 eAbstractionObserver]: Analyzing ICFG diskperf_simpl1.cil.c [2019-10-14 23:17:53,469 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:17:53,478 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:17:53,490 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:17:53,519 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:17:53,520 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:17:53,520 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:17:53,520 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:17:53,520 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:17:53,520 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:17:53,521 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:17:53,521 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:17:53,553 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states. [2019-10-14 23:17:53,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-14 23:17:53,562 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:53,563 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:53,566 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:53,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:53,573 INFO L82 PathProgramCache]: Analyzing trace with hash -155432117, now seen corresponding path program 1 times [2019-10-14 23:17:53,583 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:53,583 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773914021] [2019-10-14 23:17:53,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:53,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:53,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:54,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:17:54,031 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773914021] [2019-10-14 23:17:54,032 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:54,032 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:17:54,033 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246359683] [2019-10-14 23:17:54,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:17:54,037 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:54,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:17:54,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:17:54,056 INFO L87 Difference]: Start difference. First operand 295 states. Second operand 5 states. [2019-10-14 23:17:55,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:55,511 INFO L93 Difference]: Finished difference Result 576 states and 845 transitions. [2019-10-14 23:17:55,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:17:55,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-14 23:17:55,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:55,543 INFO L225 Difference]: With dead ends: 576 [2019-10-14 23:17:55,543 INFO L226 Difference]: Without dead ends: 326 [2019-10-14 23:17:55,557 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:17:55,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2019-10-14 23:17:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 287. [2019-10-14 23:17:55,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2019-10-14 23:17:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 383 transitions. [2019-10-14 23:17:55,670 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 383 transitions. Word has length 20 [2019-10-14 23:17:55,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:55,671 INFO L462 AbstractCegarLoop]: Abstraction has 287 states and 383 transitions. [2019-10-14 23:17:55,671 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:17:55,671 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 383 transitions. [2019-10-14 23:17:55,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-14 23:17:55,674 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:55,674 INFO L380 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] [2019-10-14 23:17:55,674 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:55,675 INFO L82 PathProgramCache]: Analyzing trace with hash -240124352, now seen corresponding path program 1 times [2019-10-14 23:17:55,675 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:55,675 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700276787] [2019-10-14 23:17:55,675 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:55,676 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:55,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:17:55,991 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700276787] [2019-10-14 23:17:55,991 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:55,992 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:17:55,992 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717971938] [2019-10-14 23:17:55,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:17:55,996 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:55,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:17:55,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:17:55,997 INFO L87 Difference]: Start difference. First operand 287 states and 383 transitions. Second operand 6 states. [2019-10-14 23:17:58,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:58,185 INFO L93 Difference]: Finished difference Result 690 states and 962 transitions. [2019-10-14 23:17:58,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:17:58,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-10-14 23:17:58,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:58,192 INFO L225 Difference]: With dead ends: 690 [2019-10-14 23:17:58,192 INFO L226 Difference]: Without dead ends: 507 [2019-10-14 23:17:58,194 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:17:58,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2019-10-14 23:17:58,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 440. [2019-10-14 23:17:58,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2019-10-14 23:17:58,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 608 transitions. [2019-10-14 23:17:58,270 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 608 transitions. Word has length 25 [2019-10-14 23:17:58,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:58,270 INFO L462 AbstractCegarLoop]: Abstraction has 440 states and 608 transitions. [2019-10-14 23:17:58,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:17:58,271 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 608 transitions. [2019-10-14 23:17:58,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-14 23:17:58,272 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:58,273 INFO L380 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] [2019-10-14 23:17:58,273 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:58,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:58,273 INFO L82 PathProgramCache]: Analyzing trace with hash -2018358777, now seen corresponding path program 1 times [2019-10-14 23:17:58,273 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:58,274 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24670432] [2019-10-14 23:17:58,274 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:58,274 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:58,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:17:58,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24670432] [2019-10-14 23:17:58,474 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:58,474 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:17:58,475 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995034569] [2019-10-14 23:17:58,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:17:58,475 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:58,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:17:58,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:17:58,476 INFO L87 Difference]: Start difference. First operand 440 states and 608 transitions. Second operand 6 states. [2019-10-14 23:18:00,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:00,093 INFO L93 Difference]: Finished difference Result 1013 states and 1458 transitions. [2019-10-14 23:18:00,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:00,094 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2019-10-14 23:18:00,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:00,101 INFO L225 Difference]: With dead ends: 1013 [2019-10-14 23:18:00,101 INFO L226 Difference]: Without dead ends: 690 [2019-10-14 23:18:00,104 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:00,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-10-14 23:18:00,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 618. [2019-10-14 23:18:00,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2019-10-14 23:18:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 888 transitions. [2019-10-14 23:18:00,171 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 888 transitions. Word has length 31 [2019-10-14 23:18:00,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:00,171 INFO L462 AbstractCegarLoop]: Abstraction has 618 states and 888 transitions. [2019-10-14 23:18:00,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:00,172 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 888 transitions. [2019-10-14 23:18:00,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-14 23:18:00,174 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:00,174 INFO L380 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] [2019-10-14 23:18:00,174 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:00,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:00,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1575744654, now seen corresponding path program 1 times [2019-10-14 23:18:00,175 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:00,175 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797050782] [2019-10-14 23:18:00,176 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:00,176 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:00,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:00,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:00,372 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797050782] [2019-10-14 23:18:00,373 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:00,373 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:00,373 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495967439] [2019-10-14 23:18:00,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:00,374 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:00,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:00,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:00,375 INFO L87 Difference]: Start difference. First operand 618 states and 888 transitions. Second operand 6 states. [2019-10-14 23:18:01,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:01,505 INFO L93 Difference]: Finished difference Result 665 states and 952 transitions. [2019-10-14 23:18:01,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:01,506 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2019-10-14 23:18:01,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:01,511 INFO L225 Difference]: With dead ends: 665 [2019-10-14 23:18:01,511 INFO L226 Difference]: Without dead ends: 661 [2019-10-14 23:18:01,512 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:18:01,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2019-10-14 23:18:01,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 628. [2019-10-14 23:18:01,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-14 23:18:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 901 transitions. [2019-10-14 23:18:01,562 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 901 transitions. Word has length 36 [2019-10-14 23:18:01,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:01,563 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 901 transitions. [2019-10-14 23:18:01,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:01,567 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 901 transitions. [2019-10-14 23:18:01,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-14 23:18:01,578 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:01,578 INFO L380 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] [2019-10-14 23:18:01,585 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:01,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:01,586 INFO L82 PathProgramCache]: Analyzing trace with hash -113678377, now seen corresponding path program 1 times [2019-10-14 23:18:01,586 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:01,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942558240] [2019-10-14 23:18:01,586 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:01,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:01,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:01,778 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942558240] [2019-10-14 23:18:01,778 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:01,779 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:18:01,779 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189159901] [2019-10-14 23:18:01,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:18:01,779 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:01,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:18:01,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:01,780 INFO L87 Difference]: Start difference. First operand 628 states and 901 transitions. Second operand 8 states. [2019-10-14 23:18:02,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:02,787 INFO L93 Difference]: Finished difference Result 1186 states and 1751 transitions. [2019-10-14 23:18:02,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:18:02,788 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2019-10-14 23:18:02,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:02,797 INFO L225 Difference]: With dead ends: 1186 [2019-10-14 23:18:02,797 INFO L226 Difference]: Without dead ends: 1167 [2019-10-14 23:18:02,798 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:18:02,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2019-10-14 23:18:02,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1065. [2019-10-14 23:18:02,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2019-10-14 23:18:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1584 transitions. [2019-10-14 23:18:02,877 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1584 transitions. Word has length 39 [2019-10-14 23:18:02,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:02,878 INFO L462 AbstractCegarLoop]: Abstraction has 1065 states and 1584 transitions. [2019-10-14 23:18:02,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:18:02,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1584 transitions. [2019-10-14 23:18:02,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-14 23:18:02,879 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:02,880 INFO L380 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] [2019-10-14 23:18:02,880 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:02,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:02,880 INFO L82 PathProgramCache]: Analyzing trace with hash -128023286, now seen corresponding path program 1 times [2019-10-14 23:18:02,881 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:02,881 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068749848] [2019-10-14 23:18:02,881 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:02,881 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:02,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:03,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:03,042 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068749848] [2019-10-14 23:18:03,042 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:03,042 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:18:03,043 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73902361] [2019-10-14 23:18:03,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:18:03,044 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:03,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:18:03,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:03,044 INFO L87 Difference]: Start difference. First operand 1065 states and 1584 transitions. Second operand 8 states. [2019-10-14 23:18:03,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:03,858 INFO L93 Difference]: Finished difference Result 1162 states and 1720 transitions. [2019-10-14 23:18:03,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:18:03,859 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2019-10-14 23:18:03,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:03,869 INFO L225 Difference]: With dead ends: 1162 [2019-10-14 23:18:03,870 INFO L226 Difference]: Without dead ends: 1157 [2019-10-14 23:18:03,871 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:18:03,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2019-10-14 23:18:03,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1085. [2019-10-14 23:18:03,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2019-10-14 23:18:03,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1606 transitions. [2019-10-14 23:18:03,945 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1606 transitions. Word has length 39 [2019-10-14 23:18:03,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:03,945 INFO L462 AbstractCegarLoop]: Abstraction has 1085 states and 1606 transitions. [2019-10-14 23:18:03,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:18:03,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1606 transitions. [2019-10-14 23:18:03,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-14 23:18:03,948 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:03,948 INFO L380 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] [2019-10-14 23:18:03,948 INFO L410 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:03,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:03,948 INFO L82 PathProgramCache]: Analyzing trace with hash 778971858, now seen corresponding path program 1 times [2019-10-14 23:18:03,949 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:03,949 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485502245] [2019-10-14 23:18:03,949 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:03,949 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:03,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:04,169 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485502245] [2019-10-14 23:18:04,169 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:04,169 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:18:04,170 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617280910] [2019-10-14 23:18:04,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:18:04,171 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:04,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:18:04,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:04,172 INFO L87 Difference]: Start difference. First operand 1085 states and 1606 transitions. Second operand 10 states. [2019-10-14 23:18:05,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:05,259 INFO L93 Difference]: Finished difference Result 1170 states and 1730 transitions. [2019-10-14 23:18:05,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:18:05,259 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2019-10-14 23:18:05,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:05,267 INFO L225 Difference]: With dead ends: 1170 [2019-10-14 23:18:05,267 INFO L226 Difference]: Without dead ends: 1148 [2019-10-14 23:18:05,268 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:05,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2019-10-14 23:18:05,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1078. [2019-10-14 23:18:05,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1078 states. [2019-10-14 23:18:05,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1597 transitions. [2019-10-14 23:18:05,339 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1597 transitions. Word has length 40 [2019-10-14 23:18:05,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:05,340 INFO L462 AbstractCegarLoop]: Abstraction has 1078 states and 1597 transitions. [2019-10-14 23:18:05,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:18:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1597 transitions. [2019-10-14 23:18:05,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-14 23:18:05,345 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:05,346 INFO L380 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] [2019-10-14 23:18:05,346 INFO L410 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:05,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:05,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1897332428, now seen corresponding path program 1 times [2019-10-14 23:18:05,347 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:05,348 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577881537] [2019-10-14 23:18:05,348 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:05,348 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:05,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:05,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577881537] [2019-10-14 23:18:05,584 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:05,584 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:18:05,584 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118236089] [2019-10-14 23:18:05,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:18:05,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:05,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:18:05,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:18:05,588 INFO L87 Difference]: Start difference. First operand 1078 states and 1597 transitions. Second operand 6 states. [2019-10-14 23:18:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:06,580 INFO L93 Difference]: Finished difference Result 1507 states and 2281 transitions. [2019-10-14 23:18:06,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:18:06,581 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2019-10-14 23:18:06,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:06,585 INFO L225 Difference]: With dead ends: 1507 [2019-10-14 23:18:06,586 INFO L226 Difference]: Without dead ends: 599 [2019-10-14 23:18:06,592 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:06,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2019-10-14 23:18:06,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 598. [2019-10-14 23:18:06,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-10-14 23:18:06,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 852 transitions. [2019-10-14 23:18:06,634 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 852 transitions. Word has length 45 [2019-10-14 23:18:06,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:06,634 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 852 transitions. [2019-10-14 23:18:06,634 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:18:06,635 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 852 transitions. [2019-10-14 23:18:06,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-14 23:18:06,636 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:06,636 INFO L380 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] [2019-10-14 23:18:06,636 INFO L410 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:06,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:06,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1237576342, now seen corresponding path program 1 times [2019-10-14 23:18:06,637 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:06,637 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076579431] [2019-10-14 23:18:06,637 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:06,637 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:06,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:06,991 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076579431] [2019-10-14 23:18:06,992 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:06,992 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-14 23:18:06,993 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838069784] [2019-10-14 23:18:06,994 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-14 23:18:06,994 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:06,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-14 23:18:06,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:18:06,995 INFO L87 Difference]: Start difference. First operand 598 states and 852 transitions. Second operand 15 states. [2019-10-14 23:18:09,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:09,866 INFO L93 Difference]: Finished difference Result 639 states and 902 transitions. [2019-10-14 23:18:09,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-14 23:18:09,867 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2019-10-14 23:18:09,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:09,875 INFO L225 Difference]: With dead ends: 639 [2019-10-14 23:18:09,875 INFO L226 Difference]: Without dead ends: 633 [2019-10-14 23:18:09,876 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2019-10-14 23:18:09,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-14 23:18:09,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 598. [2019-10-14 23:18:09,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-10-14 23:18:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 851 transitions. [2019-10-14 23:18:09,967 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 851 transitions. Word has length 44 [2019-10-14 23:18:09,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:09,967 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 851 transitions. [2019-10-14 23:18:09,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-14 23:18:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 851 transitions. [2019-10-14 23:18:09,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-14 23:18:09,968 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:09,968 INFO L380 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] [2019-10-14 23:18:09,969 INFO L410 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:09,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:09,969 INFO L82 PathProgramCache]: Analyzing trace with hash -599288098, now seen corresponding path program 1 times [2019-10-14 23:18:09,969 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:09,969 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128269061] [2019-10-14 23:18:09,970 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:09,970 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:09,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:10,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:10,270 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128269061] [2019-10-14 23:18:10,271 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:10,271 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-14 23:18:10,271 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392740060] [2019-10-14 23:18:10,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-14 23:18:10,272 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:10,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-14 23:18:10,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:18:10,273 INFO L87 Difference]: Start difference. First operand 598 states and 851 transitions. Second operand 15 states. [2019-10-14 23:18:13,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:13,060 INFO L93 Difference]: Finished difference Result 639 states and 900 transitions. [2019-10-14 23:18:13,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-14 23:18:13,061 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2019-10-14 23:18:13,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:13,065 INFO L225 Difference]: With dead ends: 639 [2019-10-14 23:18:13,065 INFO L226 Difference]: Without dead ends: 633 [2019-10-14 23:18:13,066 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2019-10-14 23:18:13,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-14 23:18:13,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 598. [2019-10-14 23:18:13,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-10-14 23:18:13,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 850 transitions. [2019-10-14 23:18:13,108 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 850 transitions. Word has length 45 [2019-10-14 23:18:13,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:13,108 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 850 transitions. [2019-10-14 23:18:13,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-14 23:18:13,109 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 850 transitions. [2019-10-14 23:18:13,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:18:13,110 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:13,110 INFO L380 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] [2019-10-14 23:18:13,110 INFO L410 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:13,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:13,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1343021677, now seen corresponding path program 1 times [2019-10-14 23:18:13,111 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:13,111 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793810970] [2019-10-14 23:18:13,111 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:13,111 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:13,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:13,409 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793810970] [2019-10-14 23:18:13,409 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:13,409 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-14 23:18:13,410 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374638062] [2019-10-14 23:18:13,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:18:13,410 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:13,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:18:13,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:18:13,411 INFO L87 Difference]: Start difference. First operand 598 states and 850 transitions. Second operand 11 states. [2019-10-14 23:18:14,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:14,341 INFO L93 Difference]: Finished difference Result 633 states and 893 transitions. [2019-10-14 23:18:14,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:18:14,342 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2019-10-14 23:18:14,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:14,345 INFO L225 Difference]: With dead ends: 633 [2019-10-14 23:18:14,345 INFO L226 Difference]: Without dead ends: 608 [2019-10-14 23:18:14,346 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:18:14,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-14 23:18:14,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 596. [2019-10-14 23:18:14,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2019-10-14 23:18:14,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 845 transitions. [2019-10-14 23:18:14,385 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 845 transitions. Word has length 46 [2019-10-14 23:18:14,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:14,385 INFO L462 AbstractCegarLoop]: Abstraction has 596 states and 845 transitions. [2019-10-14 23:18:14,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:18:14,385 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 845 transitions. [2019-10-14 23:18:14,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:18:14,386 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:14,387 INFO L380 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] [2019-10-14 23:18:14,387 INFO L410 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:14,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:14,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1289582749, now seen corresponding path program 1 times [2019-10-14 23:18:14,387 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:14,387 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038926877] [2019-10-14 23:18:14,388 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:14,388 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:14,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:14,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:14,597 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038926877] [2019-10-14 23:18:14,597 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:14,598 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:18:14,598 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919552152] [2019-10-14 23:18:14,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:18:14,598 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:14,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:18:14,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:14,599 INFO L87 Difference]: Start difference. First operand 596 states and 845 transitions. Second operand 8 states. [2019-10-14 23:18:15,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:15,431 INFO L93 Difference]: Finished difference Result 834 states and 1234 transitions. [2019-10-14 23:18:15,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:18:15,432 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2019-10-14 23:18:15,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:15,437 INFO L225 Difference]: With dead ends: 834 [2019-10-14 23:18:15,438 INFO L226 Difference]: Without dead ends: 826 [2019-10-14 23:18:15,439 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:15,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2019-10-14 23:18:15,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 665. [2019-10-14 23:18:15,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2019-10-14 23:18:15,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 948 transitions. [2019-10-14 23:18:15,486 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 948 transitions. Word has length 46 [2019-10-14 23:18:15,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:15,487 INFO L462 AbstractCegarLoop]: Abstraction has 665 states and 948 transitions. [2019-10-14 23:18:15,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:18:15,487 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 948 transitions. [2019-10-14 23:18:15,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-14 23:18:15,488 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:15,488 INFO L380 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] [2019-10-14 23:18:15,489 INFO L410 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:15,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:15,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1713004902, now seen corresponding path program 1 times [2019-10-14 23:18:15,489 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:15,489 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456695774] [2019-10-14 23:18:15,490 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:15,490 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:15,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:15,664 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456695774] [2019-10-14 23:18:15,664 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:15,664 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:18:15,664 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116424996] [2019-10-14 23:18:15,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:18:15,665 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:15,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:18:15,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:18:15,666 INFO L87 Difference]: Start difference. First operand 665 states and 948 transitions. Second operand 8 states. [2019-10-14 23:18:17,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:17,096 INFO L93 Difference]: Finished difference Result 739 states and 1021 transitions. [2019-10-14 23:18:17,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:18:17,097 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2019-10-14 23:18:17,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:17,100 INFO L225 Difference]: With dead ends: 739 [2019-10-14 23:18:17,100 INFO L226 Difference]: Without dead ends: 462 [2019-10-14 23:18:17,102 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:18:17,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2019-10-14 23:18:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 441. [2019-10-14 23:18:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2019-10-14 23:18:17,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 578 transitions. [2019-10-14 23:18:17,133 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 578 transitions. Word has length 49 [2019-10-14 23:18:17,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:17,133 INFO L462 AbstractCegarLoop]: Abstraction has 441 states and 578 transitions. [2019-10-14 23:18:17,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:18:17,133 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 578 transitions. [2019-10-14 23:18:17,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:18:17,134 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:17,134 INFO L380 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] [2019-10-14 23:18:17,135 INFO L410 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:17,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:17,135 INFO L82 PathProgramCache]: Analyzing trace with hash -869356297, now seen corresponding path program 1 times [2019-10-14 23:18:17,135 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:17,135 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359583618] [2019-10-14 23:18:17,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:17,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:17,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:17,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359583618] [2019-10-14 23:18:17,356 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:17,357 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-14 23:18:17,357 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854806599] [2019-10-14 23:18:17,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 23:18:17,358 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:17,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 23:18:17,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:18:17,359 INFO L87 Difference]: Start difference. First operand 441 states and 578 transitions. Second operand 13 states. [2019-10-14 23:18:18,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:18,440 INFO L93 Difference]: Finished difference Result 457 states and 597 transitions. [2019-10-14 23:18:18,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:18:18,440 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2019-10-14 23:18:18,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:18,444 INFO L225 Difference]: With dead ends: 457 [2019-10-14 23:18:18,444 INFO L226 Difference]: Without dead ends: 453 [2019-10-14 23:18:18,444 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:18:18,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2019-10-14 23:18:18,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 449. [2019-10-14 23:18:18,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2019-10-14 23:18:18,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 589 transitions. [2019-10-14 23:18:18,477 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 589 transitions. Word has length 47 [2019-10-14 23:18:18,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:18,477 INFO L462 AbstractCegarLoop]: Abstraction has 449 states and 589 transitions. [2019-10-14 23:18:18,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 23:18:18,477 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 589 transitions. [2019-10-14 23:18:18,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:18:18,478 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:18,478 INFO L380 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] [2019-10-14 23:18:18,479 INFO L410 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:18,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:18,479 INFO L82 PathProgramCache]: Analyzing trace with hash -869633127, now seen corresponding path program 1 times [2019-10-14 23:18:18,479 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:18,479 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338968310] [2019-10-14 23:18:18,480 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:18,480 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:18,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:18,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:18,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338968310] [2019-10-14 23:18:18,757 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:18,757 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-14 23:18:18,757 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380164744] [2019-10-14 23:18:18,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 23:18:18,758 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:18,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 23:18:18,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:18:18,759 INFO L87 Difference]: Start difference. First operand 449 states and 589 transitions. Second operand 13 states. [2019-10-14 23:18:19,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:19,690 INFO L93 Difference]: Finished difference Result 780 states and 1069 transitions. [2019-10-14 23:18:19,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:18:19,691 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2019-10-14 23:18:19,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:19,695 INFO L225 Difference]: With dead ends: 780 [2019-10-14 23:18:19,695 INFO L226 Difference]: Without dead ends: 472 [2019-10-14 23:18:19,697 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:18:19,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2019-10-14 23:18:19,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 459. [2019-10-14 23:18:19,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2019-10-14 23:18:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 604 transitions. [2019-10-14 23:18:19,729 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 604 transitions. Word has length 47 [2019-10-14 23:18:19,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:19,729 INFO L462 AbstractCegarLoop]: Abstraction has 459 states and 604 transitions. [2019-10-14 23:18:19,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 23:18:19,730 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 604 transitions. [2019-10-14 23:18:19,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-14 23:18:19,731 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:19,731 INFO L380 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] [2019-10-14 23:18:19,731 INFO L410 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:19,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:19,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1156321742, now seen corresponding path program 1 times [2019-10-14 23:18:19,732 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:19,732 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750440475] [2019-10-14 23:18:19,732 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:19,732 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:19,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:20,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:20,043 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750440475] [2019-10-14 23:18:20,044 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:20,044 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-14 23:18:20,044 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536721721] [2019-10-14 23:18:20,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-14 23:18:20,045 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:20,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-14 23:18:20,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:18:20,045 INFO L87 Difference]: Start difference. First operand 459 states and 604 transitions. Second operand 15 states. [2019-10-14 23:18:22,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:22,665 INFO L93 Difference]: Finished difference Result 793 states and 1089 transitions. [2019-10-14 23:18:22,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:18:22,666 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2019-10-14 23:18:22,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:22,671 INFO L225 Difference]: With dead ends: 793 [2019-10-14 23:18:22,671 INFO L226 Difference]: Without dead ends: 482 [2019-10-14 23:18:22,673 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2019-10-14 23:18:22,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2019-10-14 23:18:22,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 459. [2019-10-14 23:18:22,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2019-10-14 23:18:22,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 604 transitions. [2019-10-14 23:18:22,734 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 604 transitions. Word has length 48 [2019-10-14 23:18:22,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:22,735 INFO L462 AbstractCegarLoop]: Abstraction has 459 states and 604 transitions. [2019-10-14 23:18:22,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-14 23:18:22,735 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 604 transitions. [2019-10-14 23:18:22,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-14 23:18:22,738 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:22,738 INFO L380 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] [2019-10-14 23:18:22,739 INFO L410 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:22,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:22,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1551268366, now seen corresponding path program 1 times [2019-10-14 23:18:22,739 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:22,740 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120570381] [2019-10-14 23:18:22,740 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:22,740 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:22,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:23,058 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120570381] [2019-10-14 23:18:23,058 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:23,058 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:18:23,059 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667215817] [2019-10-14 23:18:23,059 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:18:23,060 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:23,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:18:23,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:18:23,061 INFO L87 Difference]: Start difference. First operand 459 states and 604 transitions. Second operand 10 states. [2019-10-14 23:18:23,988 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-10-14 23:18:24,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:24,788 INFO L93 Difference]: Finished difference Result 592 states and 811 transitions. [2019-10-14 23:18:24,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:18:24,788 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2019-10-14 23:18:24,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:24,792 INFO L225 Difference]: With dead ends: 592 [2019-10-14 23:18:24,792 INFO L226 Difference]: Without dead ends: 573 [2019-10-14 23:18:24,793 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:18:24,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2019-10-14 23:18:24,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 444. [2019-10-14 23:18:24,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2019-10-14 23:18:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 583 transitions. [2019-10-14 23:18:24,827 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 583 transitions. Word has length 48 [2019-10-14 23:18:24,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:24,827 INFO L462 AbstractCegarLoop]: Abstraction has 444 states and 583 transitions. [2019-10-14 23:18:24,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:18:24,827 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 583 transitions. [2019-10-14 23:18:24,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-14 23:18:24,828 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:24,828 INFO L380 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] [2019-10-14 23:18:24,829 INFO L410 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:24,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:24,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1985376582, now seen corresponding path program 1 times [2019-10-14 23:18:24,829 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:24,829 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628509173] [2019-10-14 23:18:24,830 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:24,830 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:24,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:18:25,058 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628509173] [2019-10-14 23:18:25,058 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:18:25,058 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:18:25,059 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547613411] [2019-10-14 23:18:25,059 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:18:25,059 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:18:25,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:18:25,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:18:25,060 INFO L87 Difference]: Start difference. First operand 444 states and 583 transitions. Second operand 12 states. [2019-10-14 23:18:26,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:18:26,643 INFO L93 Difference]: Finished difference Result 458 states and 599 transitions. [2019-10-14 23:18:26,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:18:26,644 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2019-10-14 23:18:26,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:18:26,646 INFO L225 Difference]: With dead ends: 458 [2019-10-14 23:18:26,647 INFO L226 Difference]: Without dead ends: 427 [2019-10-14 23:18:26,647 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:18:26,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2019-10-14 23:18:26,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2019-10-14 23:18:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2019-10-14 23:18:26,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 562 transitions. [2019-10-14 23:18:26,678 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 562 transitions. Word has length 49 [2019-10-14 23:18:26,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:18:26,678 INFO L462 AbstractCegarLoop]: Abstraction has 427 states and 562 transitions. [2019-10-14 23:18:26,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:18:26,678 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 562 transitions. [2019-10-14 23:18:26,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-14 23:18:26,679 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:18:26,679 INFO L380 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] [2019-10-14 23:18:26,680 INFO L410 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:18:26,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:18:26,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1231576510, now seen corresponding path program 1 times [2019-10-14 23:18:26,680 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:18:26,680 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814208273] [2019-10-14 23:18:26,681 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:26,681 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:18:26,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:18:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:18:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat