/usr/bin/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:32:21,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:32:21,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:32:21,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:32:21,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:32:21,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:32:21,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:32:21,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:32:21,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:32:21,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:32:21,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:32:21,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:32:21,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:32:21,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:32:21,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:32:21,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:32:21,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:32:21,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:32:21,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:32:21,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:32:21,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:32:21,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:32:21,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:32:21,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:32:21,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:32:21,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:32:21,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:32:21,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:32:21,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:32:21,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-04 16:32:21,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:32:21,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:32:21,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:32:21,430 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:32:21,442 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:32:21,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:32:21,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:32:21,445 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:32:21,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:32:21,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:32:21,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:32:21,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:32:21,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:32:21,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:32:21,446 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:32:21,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:32:21,446 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:32:21,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:32:21,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:32:21,447 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:32:21,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:32:21,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:32:21,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:32:21,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:32:21,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:32:21,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:32:21,449 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:32:21,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:32:21,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:32:21,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:32:21,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:32:21,922 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:32:21,924 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-09-04 16:32:22,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/460dc0443/86484eb9008842c79b16646902d1034b/FLAGf31006d8b [2020-09-04 16:32:22,626 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:32:22,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-09-04 16:32:22,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/460dc0443/86484eb9008842c79b16646902d1034b/FLAGf31006d8b [2020-09-04 16:32:22,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/460dc0443/86484eb9008842c79b16646902d1034b [2020-09-04 16:32:22,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:32:22,935 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:32:22,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:32:22,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:32:22,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:32:22,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:32:22" (1/1) ... [2020-09-04 16:32:22,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177f3252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:32:22, skipping insertion in model container [2020-09-04 16:32:22,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:32:22" (1/1) ... [2020-09-04 16:32:22,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:32:23,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:32:23,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:32:23,412 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:32:23,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:32:23,644 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:32:23,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:32:23 WrapperNode [2020-09-04 16:32:23,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:32:23,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:32:23,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:32:23,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:32:23,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:32:23" (1/1) ... [2020-09-04 16:32:23,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:32:23" (1/1) ... [2020-09-04 16:32:23,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:32:23" (1/1) ... [2020-09-04 16:32:23,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:32:23" (1/1) ... [2020-09-04 16:32:23,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:32:23" (1/1) ... [2020-09-04 16:32:23,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:32:23" (1/1) ... [2020-09-04 16:32:23,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:32:23" (1/1) ... [2020-09-04 16:32:23,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:32:23,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:32:23,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:32:23,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:32:23,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:32:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:32:23,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:32:23,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:32:23,814 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-09-04 16:32:23,814 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-09-04 16:32:23,814 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-09-04 16:32:23,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:32:23,814 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-09-04 16:32:23,814 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-09-04 16:32:23,815 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-09-04 16:32:23,815 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-09-04 16:32:23,815 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-09-04 16:32:23,815 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-09-04 16:32:23,816 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-09-04 16:32:23,816 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-09-04 16:32:23,816 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-09-04 16:32:23,816 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-09-04 16:32:23,816 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-09-04 16:32:23,817 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-09-04 16:32:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:32:23,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-04 16:32:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:32:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-04 16:32:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-09-04 16:32:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-09-04 16:32:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-09-04 16:32:23,818 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-09-04 16:32:23,819 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-09-04 16:32:23,819 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-09-04 16:32:23,819 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-09-04 16:32:23,819 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-09-04 16:32:23,819 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-09-04 16:32:23,819 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-09-04 16:32:23,820 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-09-04 16:32:23,820 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-09-04 16:32:23,820 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-09-04 16:32:23,820 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-09-04 16:32:23,820 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:32:23,821 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-09-04 16:32:23,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:32:23,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:32:24,154 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-04 16:32:24,253 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-09-04 16:32:24,253 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-09-04 16:32:24,308 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-04 16:32:24,548 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-09-04 16:32:24,548 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-09-04 16:32:24,550 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-04 16:32:24,607 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-09-04 16:32:24,607 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-09-04 16:32:24,615 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-04 16:32:24,679 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-09-04 16:32:24,680 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-09-04 16:32:24,868 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-04 16:32:24,900 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-09-04 16:32:24,900 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-09-04 16:32:24,961 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-04 16:32:25,120 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-09-04 16:32:25,120 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-09-04 16:32:25,167 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:32:25,167 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 16:32:25,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:32:25 BoogieIcfgContainer [2020-09-04 16:32:25,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:32:25,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:32:25,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:32:25,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:32:25,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:32:22" (1/3) ... [2020-09-04 16:32:25,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bb6f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:32:25, skipping insertion in model container [2020-09-04 16:32:25,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:32:23" (2/3) ... [2020-09-04 16:32:25,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bb6f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:32:25, skipping insertion in model container [2020-09-04 16:32:25,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:32:25" (3/3) ... [2020-09-04 16:32:25,200 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-09-04 16:32:25,214 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:32:25,231 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:32:25,255 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:32:25,300 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:32:25,300 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:32:25,301 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:32:25,301 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:32:25,301 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:32:25,301 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:32:25,302 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:32:25,303 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:32:25,360 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states. [2020-09-04 16:32:25,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-04 16:32:25,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:25,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:32:25,384 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:25,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:25,395 INFO L82 PathProgramCache]: Analyzing trace with hash 738723625, now seen corresponding path program 1 times [2020-09-04 16:32:25,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:25,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716016278] [2020-09-04 16:32:25,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:25,492 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:25,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:25,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 16:32:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:32:25,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716016278] [2020-09-04 16:32:25,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:25,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:32:25,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684395279] [2020-09-04 16:32:25,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:32:25,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:25,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:32:25,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:32:25,978 INFO L87 Difference]: Start difference. First operand 667 states. Second operand 5 states. [2020-09-04 16:32:28,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:28,326 INFO L93 Difference]: Finished difference Result 1037 states and 1248 transitions. [2020-09-04 16:32:28,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:32:28,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-09-04 16:32:28,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:28,376 INFO L225 Difference]: With dead ends: 1037 [2020-09-04 16:32:28,377 INFO L226 Difference]: Without dead ends: 709 [2020-09-04 16:32:28,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:32:28,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-09-04 16:32:28,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 655. [2020-09-04 16:32:28,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-09-04 16:32:28,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 750 transitions. [2020-09-04 16:32:28,583 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 750 transitions. Word has length 85 [2020-09-04 16:32:28,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:28,584 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 750 transitions. [2020-09-04 16:32:28,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:32:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 750 transitions. [2020-09-04 16:32:28,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-04 16:32:28,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:28,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:32:28,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:32:28,592 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:28,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:28,593 INFO L82 PathProgramCache]: Analyzing trace with hash -242240865, now seen corresponding path program 1 times [2020-09-04 16:32:28,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:28,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054413465] [2020-09-04 16:32:28,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:28,597 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:28,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:28,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 16:32:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:28,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-04 16:32:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:29,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:32:29,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054413465] [2020-09-04 16:32:29,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:29,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:32:29,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839172028] [2020-09-04 16:32:29,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:32:29,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:29,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:32:29,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:32:29,011 INFO L87 Difference]: Start difference. First operand 655 states and 750 transitions. Second operand 6 states. [2020-09-04 16:32:31,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:31,130 INFO L93 Difference]: Finished difference Result 976 states and 1131 transitions. [2020-09-04 16:32:31,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 16:32:31,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-09-04 16:32:31,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:31,147 INFO L225 Difference]: With dead ends: 976 [2020-09-04 16:32:31,147 INFO L226 Difference]: Without dead ends: 885 [2020-09-04 16:32:31,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:32:31,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-09-04 16:32:31,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 806. [2020-09-04 16:32:31,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-04 16:32:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 917 transitions. [2020-09-04 16:32:31,249 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 917 transitions. Word has length 136 [2020-09-04 16:32:31,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:31,250 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 917 transitions. [2020-09-04 16:32:31,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:32:31,250 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 917 transitions. [2020-09-04 16:32:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-04 16:32:31,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:31,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:32:31,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:32:31,256 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:31,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:31,257 INFO L82 PathProgramCache]: Analyzing trace with hash 864276638, now seen corresponding path program 1 times [2020-09-04 16:32:31,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:31,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495667546] [2020-09-04 16:32:31,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:31,260 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:31,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:31,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 16:32:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:31,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-04 16:32:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:32:31,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495667546] [2020-09-04 16:32:31,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:31,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:32:31,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199847953] [2020-09-04 16:32:31,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:32:31,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:31,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:32:31,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:32:31,718 INFO L87 Difference]: Start difference. First operand 806 states and 917 transitions. Second operand 6 states. [2020-09-04 16:32:33,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:33,489 INFO L93 Difference]: Finished difference Result 1133 states and 1293 transitions. [2020-09-04 16:32:33,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 16:32:33,490 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-04 16:32:33,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:33,502 INFO L225 Difference]: With dead ends: 1133 [2020-09-04 16:32:33,503 INFO L226 Difference]: Without dead ends: 907 [2020-09-04 16:32:33,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-04 16:32:33,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2020-09-04 16:32:33,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 881. [2020-09-04 16:32:33,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-04 16:32:33,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1003 transitions. [2020-09-04 16:32:33,628 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1003 transitions. Word has length 158 [2020-09-04 16:32:33,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:33,629 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1003 transitions. [2020-09-04 16:32:33,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:32:33,630 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1003 transitions. [2020-09-04 16:32:33,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-04 16:32:33,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:33,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:32:33,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:32:33,635 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:33,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:33,636 INFO L82 PathProgramCache]: Analyzing trace with hash 153469469, now seen corresponding path program 1 times [2020-09-04 16:32:33,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:33,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275127569] [2020-09-04 16:32:33,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:33,640 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:33,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:33,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 16:32:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:33,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-04 16:32:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:32:33,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275127569] [2020-09-04 16:32:33,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:33,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:32:33,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344040245] [2020-09-04 16:32:33,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:32:33,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:33,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:32:33,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:32:33,956 INFO L87 Difference]: Start difference. First operand 881 states and 1003 transitions. Second operand 6 states. [2020-09-04 16:32:36,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:36,069 INFO L93 Difference]: Finished difference Result 885 states and 1006 transitions. [2020-09-04 16:32:36,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 16:32:36,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-09-04 16:32:36,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:36,078 INFO L225 Difference]: With dead ends: 885 [2020-09-04 16:32:36,079 INFO L226 Difference]: Without dead ends: 881 [2020-09-04 16:32:36,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-04 16:32:36,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2020-09-04 16:32:36,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 880. [2020-09-04 16:32:36,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-09-04 16:32:36,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1000 transitions. [2020-09-04 16:32:36,209 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1000 transitions. Word has length 162 [2020-09-04 16:32:36,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:36,210 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 1000 transitions. [2020-09-04 16:32:36,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:32:36,211 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1000 transitions. [2020-09-04 16:32:36,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-04 16:32:36,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:36,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:32:36,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:32:36,216 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:36,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:36,217 INFO L82 PathProgramCache]: Analyzing trace with hash -363507173, now seen corresponding path program 1 times [2020-09-04 16:32:36,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:36,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965845753] [2020-09-04 16:32:36,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:36,221 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:36,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:36,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 16:32:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:36,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-04 16:32:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:36,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-04 16:32:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:36,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 16:32:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:36,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 16:32:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:32:36,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965845753] [2020-09-04 16:32:36,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:36,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 16:32:36,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515242829] [2020-09-04 16:32:36,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 16:32:36,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:36,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 16:32:36,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:32:36,573 INFO L87 Difference]: Start difference. First operand 880 states and 1000 transitions. Second operand 8 states. [2020-09-04 16:32:37,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:37,438 INFO L93 Difference]: Finished difference Result 892 states and 1015 transitions. [2020-09-04 16:32:37,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 16:32:37,440 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-09-04 16:32:37,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:37,453 INFO L225 Difference]: With dead ends: 892 [2020-09-04 16:32:37,454 INFO L226 Difference]: Without dead ends: 876 [2020-09-04 16:32:37,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-09-04 16:32:37,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-09-04 16:32:37,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 821. [2020-09-04 16:32:37,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-09-04 16:32:37,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 936 transitions. [2020-09-04 16:32:37,654 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 936 transitions. Word has length 187 [2020-09-04 16:32:37,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:37,655 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 936 transitions. [2020-09-04 16:32:37,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 16:32:37,656 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 936 transitions. [2020-09-04 16:32:37,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-04 16:32:37,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:37,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:32:37,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:32:37,662 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:37,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:37,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1857862353, now seen corresponding path program 1 times [2020-09-04 16:32:37,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:37,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383849045] [2020-09-04 16:32:37,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:37,668 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:37,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:37,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 16:32:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:37,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-04 16:32:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:38,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 16:32:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:38,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 16:32:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:38,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 16:32:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:32:38,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383849045] [2020-09-04 16:32:38,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:38,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 16:32:38,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691742798] [2020-09-04 16:32:38,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 16:32:38,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:38,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 16:32:38,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:32:38,220 INFO L87 Difference]: Start difference. First operand 821 states and 936 transitions. Second operand 11 states. [2020-09-04 16:32:41,039 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-09-04 16:32:42,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:42,184 INFO L93 Difference]: Finished difference Result 944 states and 1075 transitions. [2020-09-04 16:32:42,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 16:32:42,186 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 193 [2020-09-04 16:32:42,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:42,195 INFO L225 Difference]: With dead ends: 944 [2020-09-04 16:32:42,196 INFO L226 Difference]: Without dead ends: 938 [2020-09-04 16:32:42,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-09-04 16:32:42,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2020-09-04 16:32:42,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 880. [2020-09-04 16:32:42,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-09-04 16:32:42,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 997 transitions. [2020-09-04 16:32:42,395 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 997 transitions. Word has length 193 [2020-09-04 16:32:42,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:42,396 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 997 transitions. [2020-09-04 16:32:42,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 16:32:42,397 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 997 transitions. [2020-09-04 16:32:42,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-04 16:32:42,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:42,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:32:42,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 16:32:42,403 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:42,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:42,403 INFO L82 PathProgramCache]: Analyzing trace with hash -309975460, now seen corresponding path program 1 times [2020-09-04 16:32:42,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:42,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937198341] [2020-09-04 16:32:42,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:42,408 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:42,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:42,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 16:32:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:42,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-04 16:32:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:42,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-04 16:32:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:42,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 16:32:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:42,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 16:32:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:32:42,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937198341] [2020-09-04 16:32:42,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:42,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 16:32:42,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513796405] [2020-09-04 16:32:42,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 16:32:42,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:42,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 16:32:42,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-09-04 16:32:42,999 INFO L87 Difference]: Start difference. First operand 880 states and 997 transitions. Second operand 15 states. [2020-09-04 16:32:43,527 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-09-04 16:32:44,171 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-09-04 16:32:46,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:46,757 INFO L93 Difference]: Finished difference Result 1002 states and 1127 transitions. [2020-09-04 16:32:46,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 16:32:46,759 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 189 [2020-09-04 16:32:46,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:46,765 INFO L225 Difference]: With dead ends: 1002 [2020-09-04 16:32:46,766 INFO L226 Difference]: Without dead ends: 928 [2020-09-04 16:32:46,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 16:32:46,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2020-09-04 16:32:46,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 823. [2020-09-04 16:32:46,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2020-09-04 16:32:46,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 931 transitions. [2020-09-04 16:32:46,899 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 931 transitions. Word has length 189 [2020-09-04 16:32:46,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:46,900 INFO L479 AbstractCegarLoop]: Abstraction has 823 states and 931 transitions. [2020-09-04 16:32:46,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 16:32:46,900 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 931 transitions. [2020-09-04 16:32:46,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-04 16:32:46,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:46,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:32:46,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 16:32:46,905 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:46,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:46,905 INFO L82 PathProgramCache]: Analyzing trace with hash -132300136, now seen corresponding path program 1 times [2020-09-04 16:32:46,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:46,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691880826] [2020-09-04 16:32:46,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:46,908 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 16:32:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-04 16:32:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 16:32:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 16:32:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 16:32:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:47,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:32:47,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691880826] [2020-09-04 16:32:47,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:47,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-04 16:32:47,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133124679] [2020-09-04 16:32:47,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-04 16:32:47,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:47,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-04 16:32:47,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-09-04 16:32:47,572 INFO L87 Difference]: Start difference. First operand 823 states and 931 transitions. Second operand 17 states. [2020-09-04 16:32:52,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:52,681 INFO L93 Difference]: Finished difference Result 845 states and 955 transitions. [2020-09-04 16:32:52,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 16:32:52,682 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 195 [2020-09-04 16:32:52,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:52,688 INFO L225 Difference]: With dead ends: 845 [2020-09-04 16:32:52,688 INFO L226 Difference]: Without dead ends: 828 [2020-09-04 16:32:52,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-09-04 16:32:52,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-04 16:32:52,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 819. [2020-09-04 16:32:52,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-09-04 16:32:52,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 925 transitions. [2020-09-04 16:32:52,840 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 925 transitions. Word has length 195 [2020-09-04 16:32:52,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:52,840 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 925 transitions. [2020-09-04 16:32:52,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-04 16:32:52,841 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 925 transitions. [2020-09-04 16:32:52,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-04 16:32:52,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:52,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:32:52,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 16:32:52,846 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:52,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:52,847 INFO L82 PathProgramCache]: Analyzing trace with hash -853263794, now seen corresponding path program 1 times [2020-09-04 16:32:52,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:52,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974367210] [2020-09-04 16:32:52,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:52,851 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:53,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:53,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 16:32:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:53,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-04 16:32:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:53,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-04 16:32:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:53,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 16:32:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:53,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 16:32:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:32:53,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974367210] [2020-09-04 16:32:53,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:53,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-04 16:32:53,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397821480] [2020-09-04 16:32:53,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-04 16:32:53,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:53,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-04 16:32:53,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-09-04 16:32:53,513 INFO L87 Difference]: Start difference. First operand 819 states and 925 transitions. Second operand 17 states. [2020-09-04 16:32:58,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:32:58,592 INFO L93 Difference]: Finished difference Result 841 states and 949 transitions. [2020-09-04 16:32:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 16:32:58,593 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 190 [2020-09-04 16:32:58,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:32:58,598 INFO L225 Difference]: With dead ends: 841 [2020-09-04 16:32:58,598 INFO L226 Difference]: Without dead ends: 798 [2020-09-04 16:32:58,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-09-04 16:32:58,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2020-09-04 16:32:58,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 789. [2020-09-04 16:32:58,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-09-04 16:32:58,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 890 transitions. [2020-09-04 16:32:58,723 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 890 transitions. Word has length 190 [2020-09-04 16:32:58,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:32:58,723 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 890 transitions. [2020-09-04 16:32:58,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-04 16:32:58,723 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 890 transitions. [2020-09-04 16:32:58,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-04 16:32:58,726 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:32:58,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:32:58,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 16:32:58,727 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:32:58,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:32:58,727 INFO L82 PathProgramCache]: Analyzing trace with hash -443732248, now seen corresponding path program 1 times [2020-09-04 16:32:58,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:32:58,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364140005] [2020-09-04 16:32:58,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:32:58,731 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:32:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:58,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:32:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:58,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 16:32:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:58,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-04 16:32:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:58,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 16:32:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:59,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-04 16:32:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:32:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:32:59,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364140005] [2020-09-04 16:32:59,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:32:59,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 16:32:59,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971669075] [2020-09-04 16:32:59,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 16:32:59,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:32:59,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 16:32:59,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-09-04 16:32:59,124 INFO L87 Difference]: Start difference. First operand 789 states and 890 transitions. Second operand 13 states. [2020-09-04 16:33:02,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:02,997 INFO L93 Difference]: Finished difference Result 811 states and 914 transitions. [2020-09-04 16:33:02,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 16:33:02,998 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 193 [2020-09-04 16:33:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:03,003 INFO L225 Difference]: With dead ends: 811 [2020-09-04 16:33:03,003 INFO L226 Difference]: Without dead ends: 714 [2020-09-04 16:33:03,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-04 16:33:03,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-09-04 16:33:03,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 705. [2020-09-04 16:33:03,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-09-04 16:33:03,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 796 transitions. [2020-09-04 16:33:03,103 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 796 transitions. Word has length 193 [2020-09-04 16:33:03,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:03,104 INFO L479 AbstractCegarLoop]: Abstraction has 705 states and 796 transitions. [2020-09-04 16:33:03,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 16:33:03,104 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 796 transitions. [2020-09-04 16:33:03,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-04 16:33:03,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:03,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:03,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 16:33:03,107 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:03,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:03,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1742770590, now seen corresponding path program 1 times [2020-09-04 16:33:03,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:03,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294120785] [2020-09-04 16:33:03,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:03,111 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:03,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 16:33:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:03,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-04 16:33:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:03,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 16:33:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:03,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294120785] [2020-09-04 16:33:03,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:03,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 16:33:03,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668227171] [2020-09-04 16:33:03,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 16:33:03,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:03,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 16:33:03,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:33:03,382 INFO L87 Difference]: Start difference. First operand 705 states and 796 transitions. Second operand 8 states. [2020-09-04 16:33:05,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:05,734 INFO L93 Difference]: Finished difference Result 760 states and 853 transitions. [2020-09-04 16:33:05,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 16:33:05,735 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 197 [2020-09-04 16:33:05,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:05,739 INFO L225 Difference]: With dead ends: 760 [2020-09-04 16:33:05,739 INFO L226 Difference]: Without dead ends: 652 [2020-09-04 16:33:05,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-04 16:33:05,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2020-09-04 16:33:05,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 624. [2020-09-04 16:33:05,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2020-09-04 16:33:05,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 698 transitions. [2020-09-04 16:33:05,834 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 698 transitions. Word has length 197 [2020-09-04 16:33:05,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:05,835 INFO L479 AbstractCegarLoop]: Abstraction has 624 states and 698 transitions. [2020-09-04 16:33:05,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 16:33:05,835 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 698 transitions. [2020-09-04 16:33:05,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-04 16:33:05,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:05,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:05,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 16:33:05,839 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:05,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:05,839 INFO L82 PathProgramCache]: Analyzing trace with hash -759676943, now seen corresponding path program 1 times [2020-09-04 16:33:05,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:05,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367794706] [2020-09-04 16:33:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:05,843 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:05,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:06,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 16:33:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:06,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-04 16:33:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:06,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 16:33:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:06,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-04 16:33:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:06,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:06,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367794706] [2020-09-04 16:33:06,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:06,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 16:33:06,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797665958] [2020-09-04 16:33:06,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 16:33:06,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:06,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 16:33:06,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-04 16:33:06,279 INFO L87 Difference]: Start difference. First operand 624 states and 698 transitions. Second operand 14 states. [2020-09-04 16:33:09,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:09,006 INFO L93 Difference]: Finished difference Result 652 states and 728 transitions. [2020-09-04 16:33:09,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 16:33:09,007 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2020-09-04 16:33:09,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:09,010 INFO L225 Difference]: With dead ends: 652 [2020-09-04 16:33:09,011 INFO L226 Difference]: Without dead ends: 620 [2020-09-04 16:33:09,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-09-04 16:33:09,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-09-04 16:33:09,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 611. [2020-09-04 16:33:09,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-09-04 16:33:09,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 683 transitions. [2020-09-04 16:33:09,103 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 683 transitions. Word has length 204 [2020-09-04 16:33:09,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:09,103 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 683 transitions. [2020-09-04 16:33:09,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 16:33:09,104 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 683 transitions. [2020-09-04 16:33:09,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-04 16:33:09,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:09,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:09,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 16:33:09,107 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:09,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:09,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1349540408, now seen corresponding path program 1 times [2020-09-04 16:33:09,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:09,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94858903] [2020-09-04 16:33:09,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:09,110 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:09,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:09,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 16:33:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:09,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-04 16:33:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:09,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 16:33:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:09,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 16:33:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:09,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94858903] [2020-09-04 16:33:09,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:09,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 16:33:09,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287316149] [2020-09-04 16:33:09,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 16:33:09,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:09,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 16:33:09,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-09-04 16:33:09,481 INFO L87 Difference]: Start difference. First operand 611 states and 683 transitions. Second operand 13 states. [2020-09-04 16:33:12,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:12,410 INFO L93 Difference]: Finished difference Result 932 states and 1052 transitions. [2020-09-04 16:33:12,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 16:33:12,411 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 205 [2020-09-04 16:33:12,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:12,418 INFO L225 Difference]: With dead ends: 932 [2020-09-04 16:33:12,418 INFO L226 Difference]: Without dead ends: 793 [2020-09-04 16:33:12,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2020-09-04 16:33:12,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2020-09-04 16:33:12,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 625. [2020-09-04 16:33:12,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-09-04 16:33:12,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 701 transitions. [2020-09-04 16:33:12,535 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 701 transitions. Word has length 205 [2020-09-04 16:33:12,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:12,536 INFO L479 AbstractCegarLoop]: Abstraction has 625 states and 701 transitions. [2020-09-04 16:33:12,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 16:33:12,536 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 701 transitions. [2020-09-04 16:33:12,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-04 16:33:12,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:12,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:12,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 16:33:12,540 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:12,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:12,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1202059503, now seen corresponding path program 1 times [2020-09-04 16:33:12,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:12,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795277932] [2020-09-04 16:33:12,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:12,544 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:12,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:12,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 16:33:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:12,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-04 16:33:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:12,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-04 16:33:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:12,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 16:33:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:12,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795277932] [2020-09-04 16:33:12,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:12,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 16:33:12,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071869850] [2020-09-04 16:33:12,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 16:33:12,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:12,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 16:33:12,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-04 16:33:12,938 INFO L87 Difference]: Start difference. First operand 625 states and 701 transitions. Second operand 14 states. [2020-09-04 16:33:15,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:15,689 INFO L93 Difference]: Finished difference Result 653 states and 731 transitions. [2020-09-04 16:33:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 16:33:15,690 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 205 [2020-09-04 16:33:15,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:15,694 INFO L225 Difference]: With dead ends: 653 [2020-09-04 16:33:15,694 INFO L226 Difference]: Without dead ends: 604 [2020-09-04 16:33:15,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-09-04 16:33:15,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-09-04 16:33:15,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 595. [2020-09-04 16:33:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-09-04 16:33:15,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 650 transitions. [2020-09-04 16:33:15,794 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 650 transitions. Word has length 205 [2020-09-04 16:33:15,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:15,794 INFO L479 AbstractCegarLoop]: Abstraction has 595 states and 650 transitions. [2020-09-04 16:33:15,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 16:33:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 650 transitions. [2020-09-04 16:33:15,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-04 16:33:15,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:15,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:15,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 16:33:15,798 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:15,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:15,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1820990330, now seen corresponding path program 1 times [2020-09-04 16:33:15,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:15,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799437839] [2020-09-04 16:33:15,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:15,806 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:15,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:33:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:15,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 16:33:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-04 16:33:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-09-04 16:33:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 16:33:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-09-04 16:33:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:33:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:33:16,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799437839] [2020-09-04 16:33:16,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:33:16,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 16:33:16,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609936794] [2020-09-04 16:33:16,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 16:33:16,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:33:16,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 16:33:16,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:33:16,094 INFO L87 Difference]: Start difference. First operand 595 states and 650 transitions. Second operand 8 states. [2020-09-04 16:33:17,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:33:17,213 INFO L93 Difference]: Finished difference Result 718 states and 790 transitions. [2020-09-04 16:33:17,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 16:33:17,214 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 213 [2020-09-04 16:33:17,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:33:17,217 INFO L225 Difference]: With dead ends: 718 [2020-09-04 16:33:17,217 INFO L226 Difference]: Without dead ends: 622 [2020-09-04 16:33:17,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:33:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2020-09-04 16:33:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 591. [2020-09-04 16:33:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-09-04 16:33:17,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 643 transitions. [2020-09-04 16:33:17,317 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 643 transitions. Word has length 213 [2020-09-04 16:33:17,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:33:17,318 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 643 transitions. [2020-09-04 16:33:17,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 16:33:17,318 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 643 transitions. [2020-09-04 16:33:17,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-04 16:33:17,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:33:17,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:33:17,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 16:33:17,322 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:33:17,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:33:17,322 INFO L82 PathProgramCache]: Analyzing trace with hash 468800160, now seen corresponding path program 1 times [2020-09-04 16:33:17,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:33:17,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22756409] [2020-09-04 16:33:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:33:17,326 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:33:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:33:17,399 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:33:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:33:17,456 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:33:17,612 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:33:17,612 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:33:17,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 16:33:17,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:33:17 BoogieIcfgContainer [2020-09-04 16:33:17,667 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:33:17,669 INFO L168 Benchmark]: Toolchain (without parser) took 54734.85 ms. Allocated memory was 138.9 MB in the beginning and 747.6 MB in the end (delta: 608.7 MB). Free memory was 102.9 MB in the beginning and 689.9 MB in the end (delta: -587.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:17,670 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 16:33:17,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.49 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 102.5 MB in the beginning and 177.2 MB in the end (delta: -74.7 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:17,671 INFO L168 Benchmark]: Boogie Preprocessor took 78.66 ms. Allocated memory is still 204.5 MB. Free memory was 177.2 MB in the beginning and 173.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:17,672 INFO L168 Benchmark]: RCFGBuilder took 1462.62 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 173.7 MB in the beginning and 189.5 MB in the end (delta: -15.8 MB). Peak memory consumption was 89.0 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:17,672 INFO L168 Benchmark]: TraceAbstraction took 52477.08 ms. Allocated memory was 237.0 MB in the beginning and 747.6 MB in the end (delta: 510.7 MB). Free memory was 189.5 MB in the beginning and 689.9 MB in the end (delta: -500.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:33:17,675 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 704.49 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 102.5 MB in the beginning and 177.2 MB in the end (delta: -74.7 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.66 ms. Allocated memory is still 204.5 MB. Free memory was 177.2 MB in the beginning and 173.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1462.62 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 173.7 MB in the beginning and 189.5 MB in the end (delta: -15.8 MB). Peak memory consumption was 89.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 52477.08 ms. Allocated memory was 237.0 MB in the beginning and 747.6 MB in the end (delta: 510.7 MB). Free memory was 189.5 MB in the beginning and 689.9 MB in the end (delta: -500.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1011]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int KernelMode ; [L22] int Executive ; [L23] int DevicePowerState ; [L24] int s ; [L25] int UNLOADED ; [L26] int NP ; [L27] int DC ; [L28] int SKIP1 ; [L29] int SKIP2 ; [L30] int MPR1 ; [L31] int MPR3 ; [L32] int IPC ; [L33] int pended ; [L34] int compFptr ; [L35] int compRegistered ; [L36] int lowerDriverReturn ; [L37] int setEventCalled ; [L38] int customIrp ; [L39] int myStatus ; [L292] int status ; [L293] int irp = __VERIFIER_nondet_int() ; [L294] int pirp ; [L295] int pirp__IoStatus__Status ; [L296] int irp_choice = __VERIFIER_nondet_int() ; [L297] int devobj = __VERIFIER_nondet_int() ; [L298] int __cil_tmp8 ; [L300] KernelMode = 0 [L301] Executive = 0 [L302] DevicePowerState = 1 [L303] s = 0 [L304] UNLOADED = 0 [L305] NP = 0 [L306] DC = 0 [L307] SKIP1 = 0 [L308] SKIP2 = 0 [L309] MPR1 = 0 [L310] MPR3 = 0 [L311] IPC = 0 [L312] pended = 0 [L313] compFptr = 0 [L314] compRegistered = 0 [L315] lowerDriverReturn = 0 [L316] setEventCalled = 0 [L317] customIrp = 0 [L318] myStatus = 0 [L322] status = 0 [L323] pirp = irp [L324] CALL _BLAST_init() [L59] UNLOADED = 0 [L60] NP = 1 [L61] DC = 2 [L62] SKIP1 = 3 [L63] SKIP2 = 4 [L64] MPR1 = 5 [L65] MPR3 = 6 [L66] IPC = 7 [L67] s = UNLOADED [L68] pended = 0 [L69] compFptr = 0 [L70] compRegistered = 0 [L71] lowerDriverReturn = 0 [L72] setEventCalled = 0 [L73] customIrp = 0 [L324] RET _BLAST_init() [L326] COND TRUE status >= 0 [L327] s = NP [L328] customIrp = 0 [L329] setEventCalled = customIrp [L330] lowerDriverReturn = setEventCalled [L331] compRegistered = lowerDriverReturn [L332] pended = compRegistered [L333] pirp__IoStatus__Status = 0 [L334] myStatus = 0 [L335] COND FALSE !(irp_choice == 0) [L340] CALL stub_driver_init() [L45] s = NP [L46] pended = 0 [L47] compFptr = 0 [L48] compRegistered = 0 [L49] lowerDriverReturn = 0 [L50] setEventCalled = 0 [L51] customIrp = 0 [L340] RET stub_driver_init() [L343] COND FALSE !(status < 0) [L347] int tmp_ndt_1; [L348] tmp_ndt_1 = __VERIFIER_nondet_int() [L349] COND FALSE !(tmp_ndt_1 == 0) [L352] int tmp_ndt_2; [L353] tmp_ndt_2 = __VERIFIER_nondet_int() [L354] COND FALSE !(tmp_ndt_2 == 1) [L357] int tmp_ndt_3; [L358] tmp_ndt_3 = __VERIFIER_nondet_int() [L359] COND TRUE tmp_ndt_3 == 3 [L386] CALL, EXPR KbFilter_PnP(devobj, pirp) [L78] int devExt ; [L79] int irpStack ; [L80] int status ; [L81] int event = __VERIFIER_nondet_int() ; [L82] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L83] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L84] int irpStack__MinorFunction = __VERIFIER_nondet_int() ; [L85] int devExt__TopOfStack = __VERIFIER_nondet_int() ; [L86] int devExt__Started ; [L87] int devExt__Removed ; [L88] int devExt__SurpriseRemoved ; [L89] int Irp__IoStatus__Status ; [L90] int Irp__IoStatus__Information ; [L91] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L92] int irpSp ; [L93] int nextIrpSp ; [L94] int nextIrpSp__Control ; [L95] int irpSp___0 ; [L96] int irpSp__Context ; [L97] int irpSp__Control ; [L98] long __cil_tmp23 ; [L101] status = 0 [L102] devExt = DeviceObject__DeviceExtension [L103] irpStack = Irp__Tail__Overlay__CurrentStackLocation [L104] COND FALSE !(irpStack__MinorFunction == 0) [L107] COND FALSE !(irpStack__MinorFunction == 23) [L110] COND TRUE irpStack__MinorFunction == 2 [L234] devExt__Removed = 1 [L235] COND TRUE s == NP [L236] s = SKIP1 [L243] Irp__CurrentLocation ++ [L244] Irp__Tail__Overlay__CurrentStackLocation ++ [L245] CALL IofCallDriver(devExt__TopOfStack, Irp) [L481] int returnVal2 ; [L482] int compRetStatus ; [L483] int lcontext = __VERIFIER_nondet_int() ; [L484] long long __cil_tmp7 ; [L487] COND FALSE !(\read(compRegistered)) [L500] int tmp_ndt_6; [L501] tmp_ndt_6 = __VERIFIER_nondet_int() [L502] COND FALSE !(tmp_ndt_6 == 0) [L505] int tmp_ndt_7; [L506] tmp_ndt_7 = __VERIFIER_nondet_int() [L507] COND TRUE tmp_ndt_7 == 1 [L516] returnVal2 = -1073741823 [L526] COND FALSE !(s == NP) [L530] COND FALSE !(s == MPR1) [L539] COND TRUE s == SKIP1 [L540] s = SKIP2 [L541] lowerDriverReturn = returnVal2 [L549] return (returnVal2); [L245] RET IofCallDriver(devExt__TopOfStack, Irp) [L246] status = 0 [L288] return (status); [L386] RET, EXPR KbFilter_PnP(devobj, pirp) [L386] status = KbFilter_PnP(devobj, pirp) [L410] COND FALSE !(pended == 1) [L418] COND FALSE !(pended == 1) [L426] COND TRUE s != UNLOADED [L427] COND TRUE status != -1 [L428] COND FALSE !(s != SKIP2) [L438] COND FALSE !(pended == 1) [L445] COND FALSE !(s == DC) [L450] COND TRUE status != lowerDriverReturn [L451] CALL errorFn() [L1011] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 667 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 52.3s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 43.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9604 SDtfs, 17309 SDslu, 18069 SDs, 0 SdLazy, 30354 SolverSat, 1356 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 366 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=881occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 15 MinimizatonAttempts, 650 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...