/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:33:44,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:33:44,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:33:44,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:33:44,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:33:44,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:33:44,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:33:44,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:33:44,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:33:44,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:33:44,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:33:44,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:33:44,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:33:44,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:33:44,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:33:44,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:33:44,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:33:44,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:33:44,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:33:44,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:33:44,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:33:44,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:33:44,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:33:44,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:33:44,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:33:44,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:33:44,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:33:44,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:33:44,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:33:44,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:33:44,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:33:44,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:33:44,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:33:44,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:33:44,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:33:44,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:33:44,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:33:44,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:33:44,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:33:44,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:33:44,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:33:44,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:33:44,589 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:33:44,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:33:44,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:33:44,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:33:44,592 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:33:44,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:33:44,593 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:33:44,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:33:44,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:33:44,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:33:44,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:33:44,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:33:44,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:33:44,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:33:44,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:33:44,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:33:44,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:33:44,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:33:44,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:33:44,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:33:44,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:33:44,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:33:44,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:33:44,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:33:44,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:33:44,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:33:44,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:33:44,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:33:44,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:33:44,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:33:45,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:33:45,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:33:45,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:33:45,131 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:33:45,131 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:33:45,133 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-25 04:33:45,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d8b9c0e4/7f564a218cf249be8f65f64ea3d6d269/FLAG75d30c17f [2020-09-25 04:33:45,806 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:33:45,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-25 04:33:45,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d8b9c0e4/7f564a218cf249be8f65f64ea3d6d269/FLAG75d30c17f [2020-09-25 04:33:46,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d8b9c0e4/7f564a218cf249be8f65f64ea3d6d269 [2020-09-25 04:33:46,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:33:46,158 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:33:46,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:33:46,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:33:46,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:33:46,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:33:46" (1/1) ... [2020-09-25 04:33:46,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24834011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:46, skipping insertion in model container [2020-09-25 04:33:46,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:33:46" (1/1) ... [2020-09-25 04:33:46,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:33:46,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:33:46,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:33:46,430 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:33:46,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:33:46,466 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:33:46,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:46 WrapperNode [2020-09-25 04:33:46,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:33:46,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:33:46,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:33:46,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:33:46,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:46" (1/1) ... [2020-09-25 04:33:46,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:46" (1/1) ... [2020-09-25 04:33:46,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:46" (1/1) ... [2020-09-25 04:33:46,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:46" (1/1) ... [2020-09-25 04:33:46,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:46" (1/1) ... [2020-09-25 04:33:46,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:46" (1/1) ... [2020-09-25 04:33:46,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:46" (1/1) ... [2020-09-25 04:33:46,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:33:46,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:33:46,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:33:46,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:33:46,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:46" (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 [2020-09-25 04:33:46,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:33:46,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:33:46,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 04:33:46,674 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-25 04:33:46,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:33:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 04:33:46,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:33:46,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 04:33:46,676 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 04:33:46,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 04:33:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 04:33:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:33:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 04:33:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 04:33:46,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:33:46,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:33:46,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:33:46,966 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:33:46,967 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 04:33:46,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:33:46 BoogieIcfgContainer [2020-09-25 04:33:46,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:33:46,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:33:46,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:33:46,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:33:46,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:33:46" (1/3) ... [2020-09-25 04:33:46,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd1e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:33:46, skipping insertion in model container [2020-09-25 04:33:46,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:33:46" (2/3) ... [2020-09-25 04:33:46,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd1e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:33:46, skipping insertion in model container [2020-09-25 04:33:46,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:33:46" (3/3) ... [2020-09-25 04:33:46,984 INFO L109 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_flag_init.i [2020-09-25 04:33:46,998 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:33:47,012 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:33:47,041 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:33:47,115 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:33:47,115 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:33:47,116 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:33:47,116 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:33:47,116 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:33:47,116 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:33:47,116 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:33:47,116 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:33:47,157 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-09-25 04:33:47,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 04:33:47,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:33:47,168 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] [2020-09-25 04:33:47,169 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:33:47,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:33:47,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1392671971, now seen corresponding path program 1 times [2020-09-25 04:33:47,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:33:47,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106194178] [2020-09-25 04:33:47,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:33:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:47,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:47,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:47,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:47,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 04:33:47,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:33:47,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-25 04:33:47,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:47,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 04:33:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:47,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:33:47,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:33:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:47,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:47,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:47,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:33:47,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:33:47,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:33:47,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:47,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:47,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:47,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:33:47,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:47,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:47,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:33:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:47,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:47,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:47,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:33:47,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:33:47,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:33:47,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:47,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:47,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:47,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:33:47,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:47,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:33:47,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106194178] [2020-09-25 04:33:47,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:33:47,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:33:47,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942335346] [2020-09-25 04:33:47,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:33:47,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:33:47,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:33:47,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:33:47,832 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2020-09-25 04:33:48,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:33:48,023 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2020-09-25 04:33:48,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:33:48,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-25 04:33:48,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:33:48,043 INFO L225 Difference]: With dead ends: 94 [2020-09-25 04:33:48,043 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 04:33:48,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:33:48,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 04:33:48,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-09-25 04:33:48,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 04:33:48,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-09-25 04:33:48,111 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 29 [2020-09-25 04:33:48,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:33:48,111 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-09-25 04:33:48,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:33:48,112 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-09-25 04:33:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 04:33:48,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:33:48,114 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] [2020-09-25 04:33:48,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:33:48,114 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:33:48,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:33:48,115 INFO L82 PathProgramCache]: Analyzing trace with hash 31734745, now seen corresponding path program 1 times [2020-09-25 04:33:48,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:33:48,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145820888] [2020-09-25 04:33:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:33:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:48,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:48,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:48,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:48,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 04:33:48,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:33:48,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-09-25 04:33:48,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:48,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:48,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:33:48,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 04:33:48,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:33:48,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:48,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:33:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:48,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:48,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:48,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:33:48,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:33:48,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:33:48,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:48,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:33:48,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:48,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:48,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:33:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:48,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:48,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:48,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:48,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:33:48,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:33:48,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 04:33:48,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:48,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:48,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:48,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:33:48,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:48,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:48,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:33:48,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145820888] [2020-09-25 04:33:48,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:33:48,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:33:48,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136845128] [2020-09-25 04:33:48,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:33:48,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:33:48,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:33:48,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:33:48,610 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 5 states. [2020-09-25 04:33:48,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:33:48,794 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-09-25 04:33:48,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:33:48,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-25 04:33:48,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:33:48,798 INFO L225 Difference]: With dead ends: 83 [2020-09-25 04:33:48,798 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 04:33:48,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:33:48,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 04:33:48,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 50. [2020-09-25 04:33:48,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:33:48,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-25 04:33:48,815 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 29 [2020-09-25 04:33:48,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:33:48,815 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-25 04:33:48,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:33:48,815 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-25 04:33:48,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 04:33:48,817 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:33:48,817 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] [2020-09-25 04:33:48,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:33:48,818 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:33:48,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:33:48,818 INFO L82 PathProgramCache]: Analyzing trace with hash 215899159, now seen corresponding path program 1 times [2020-09-25 04:33:48,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:33:48,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038556174] [2020-09-25 04:33:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:33:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:48,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:48,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:49,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:50,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:50,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 04:33:50,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:33:50,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1498 [2020-09-25 04:33:50,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:50,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:33:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 04:33:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:33:50,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:50,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:33:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:50,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:50,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:50,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:33:50,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:33:50,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:33:50,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:50,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:50,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:50,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:33:50,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:50,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:50,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:33:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:50,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:50,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:50,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:50,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:33:50,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:33:50,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 04:33:50,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:50,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:50,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:50,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:33:50,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:50,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:50,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:33:50,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038556174] [2020-09-25 04:33:50,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:33:50,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:33:50,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709354046] [2020-09-25 04:33:50,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:33:50,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:33:50,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:33:50,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:33:50,471 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 7 states. [2020-09-25 04:33:50,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:33:50,729 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2020-09-25 04:33:50,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:33:50,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 04:33:50,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:33:50,732 INFO L225 Difference]: With dead ends: 92 [2020-09-25 04:33:50,732 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 04:33:50,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:33:50,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 04:33:50,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2020-09-25 04:33:50,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 04:33:50,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2020-09-25 04:33:50,743 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 36 [2020-09-25 04:33:50,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:33:50,744 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2020-09-25 04:33:50,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:33:50,744 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2020-09-25 04:33:50,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 04:33:50,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:33:50,746 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:33:50,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:33:50,746 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:33:50,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:33:50,747 INFO L82 PathProgramCache]: Analyzing trace with hash -490137063, now seen corresponding path program 2 times [2020-09-25 04:33:50,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:33:50,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515150566] [2020-09-25 04:33:50,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:33:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:50,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:50,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:51,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:53,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:53,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:33:53,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:33:53,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2309 [2020-09-25 04:33:53,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:53,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:33:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:33:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:33:53,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:53,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:33:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:53,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:53,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:53,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:33:53,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:33:53,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:33:53,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:53,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:53,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:53,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:33:53,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:53,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:53,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:33:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:53,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:53,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:53,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:33:53,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:33:53,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:33:53,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:53,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:53,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:33:53,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:33:53,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:33:53,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 04:33:53,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515150566] [2020-09-25 04:33:53,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:33:53,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:33:53,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598749569] [2020-09-25 04:33:53,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:33:53,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:33:53,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:33:53,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:33:53,181 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand 7 states. [2020-09-25 04:33:53,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:33:53,444 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-09-25 04:33:53,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:33:53,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-09-25 04:33:53,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:33:53,446 INFO L225 Difference]: With dead ends: 101 [2020-09-25 04:33:53,446 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 04:33:53,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:33:53,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 04:33:53,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2020-09-25 04:33:53,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 04:33:53,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-09-25 04:33:53,456 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 43 [2020-09-25 04:33:53,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:33:53,457 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-09-25 04:33:53,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:33:53,457 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-09-25 04:33:53,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 04:33:53,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:33:53,459 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:33:53,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:33:53,459 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:33:53,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:33:53,460 INFO L82 PathProgramCache]: Analyzing trace with hash 589608213, now seen corresponding path program 1 times [2020-09-25 04:33:53,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:33:53,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10360088] [2020-09-25 04:33:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:33:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:53,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:53,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:53,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:55,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:56,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:57,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:58,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:58,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 04:33:58,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:33:58,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:33:58,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:58,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:33:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 04:33:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:33:58,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:58,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:33:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:58,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:58,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:58,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:33:58,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:33:58,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:33:58,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:58,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:58,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:58,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:33:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:58,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:33:58,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:33:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:58,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:58,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:58,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:33:58,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:33:58,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:33:58,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 04:33:58,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:33:58,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:33:58,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:33:58,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:33:58,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:33:58,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 04:33:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:33:58,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10360088] [2020-09-25 04:33:58,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:33:58,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:33:58,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306339392] [2020-09-25 04:33:58,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:33:58,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:33:58,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:33:58,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:33:58,719 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 9 states. [2020-09-25 04:33:59,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:33:59,105 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2020-09-25 04:33:59,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:33:59,106 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-09-25 04:33:59,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:33:59,107 INFO L225 Difference]: With dead ends: 99 [2020-09-25 04:33:59,108 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 04:33:59,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-25 04:33:59,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 04:33:59,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 69. [2020-09-25 04:33:59,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-25 04:33:59,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-09-25 04:33:59,117 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 49 [2020-09-25 04:33:59,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:33:59,117 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-09-25 04:33:59,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:33:59,118 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-09-25 04:33:59,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 04:33:59,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:33:59,120 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:33:59,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:33:59,120 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:33:59,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:33:59,121 INFO L82 PathProgramCache]: Analyzing trace with hash -895858853, now seen corresponding path program 2 times [2020-09-25 04:33:59,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:33:59,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970108428] [2020-09-25 04:33:59,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:33:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:33:59,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:59,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:59,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:33:59,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:00,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:01,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:04,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:04,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 04:34:04,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:34:04,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:34:04,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:04,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:04,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:34:04,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:34:04,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:34:04,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:04,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:34:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:04,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:04,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:04,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:34:04,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:04,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:34:04,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:04,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:04,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:34:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:04,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:34:04,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:34:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:04,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:04,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:04,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:34:04,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:04,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 04:34:04,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:04,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:34:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:34:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:34:04,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:04,460 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 04:34:04,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970108428] [2020-09-25 04:34:04,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:34:04,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:34:04,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070086202] [2020-09-25 04:34:04,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:34:04,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:34:04,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:34:04,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:34:04,464 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 9 states. [2020-09-25 04:34:04,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:34:04,780 INFO L93 Difference]: Finished difference Result 125 states and 137 transitions. [2020-09-25 04:34:04,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:34:04,780 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-09-25 04:34:04,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:34:04,782 INFO L225 Difference]: With dead ends: 125 [2020-09-25 04:34:04,782 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 04:34:04,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:34:04,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 04:34:04,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2020-09-25 04:34:04,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 04:34:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2020-09-25 04:34:04,791 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 56 [2020-09-25 04:34:04,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:34:04,791 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2020-09-25 04:34:04,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:34:04,795 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2020-09-25 04:34:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 04:34:04,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:34:04,796 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:34:04,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:34:04,799 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:34:04,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:34:04,799 INFO L82 PathProgramCache]: Analyzing trace with hash -138713633, now seen corresponding path program 3 times [2020-09-25 04:34:04,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:34:04,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246548241] [2020-09-25 04:34:04,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:34:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:04,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:04,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:04,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:04,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:05,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:09,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:09,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 04:34:09,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:34:09,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:34:09,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:09,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:34:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:34:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:34:09,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:09,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:34:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:09,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:09,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:09,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:34:09,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:09,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:34:09,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:09,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:09,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:09,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:34:09,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:09,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:09,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:34:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:09,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:09,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:10,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:10,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:34:10,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:34:10,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 04:34:10,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:10,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:10,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:10,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:34:10,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:10,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 04:34:10,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246548241] [2020-09-25 04:34:10,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:34:10,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 04:34:10,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188924979] [2020-09-25 04:34:10,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 04:34:10,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:34:10,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 04:34:10,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:34:10,069 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand 11 states. [2020-09-25 04:34:10,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:34:10,371 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2020-09-25 04:34:10,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:34:10,372 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2020-09-25 04:34:10,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:34:10,373 INFO L225 Difference]: With dead ends: 113 [2020-09-25 04:34:10,373 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 04:34:10,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 04:34:10,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 04:34:10,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2020-09-25 04:34:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 04:34:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2020-09-25 04:34:10,392 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 62 [2020-09-25 04:34:10,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:34:10,392 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2020-09-25 04:34:10,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 04:34:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2020-09-25 04:34:10,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 04:34:10,398 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:34:10,398 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:34:10,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:34:10,399 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:34:10,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:34:10,399 INFO L82 PathProgramCache]: Analyzing trace with hash -2016739503, now seen corresponding path program 4 times [2020-09-25 04:34:10,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:34:10,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664018885] [2020-09-25 04:34:10,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:34:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:10,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:10,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:10,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:10,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:13,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:13,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:14,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:14,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:15,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:15,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:15,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 04:34:15,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:34:15,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 04:34:15,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:15,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:15,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:34:15,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:34:15,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:34:15,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:34:15,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:34:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:15,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:15,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:15,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:34:15,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:15,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:34:15,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:15,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:15,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:15,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:34:15,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:15,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:34:15,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:34:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:15,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:15,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:15,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:34:15,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:15,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 04:34:15,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:15,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:34:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:34:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:34:15,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:15,875 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-09-25 04:34:15,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664018885] [2020-09-25 04:34:15,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:34:15,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 04:34:15,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206321280] [2020-09-25 04:34:15,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 04:34:15,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:34:15,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 04:34:15,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:34:15,878 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand 11 states. [2020-09-25 04:34:16,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:34:16,238 INFO L93 Difference]: Finished difference Result 149 states and 163 transitions. [2020-09-25 04:34:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:34:16,239 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-09-25 04:34:16,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:34:16,240 INFO L225 Difference]: With dead ends: 149 [2020-09-25 04:34:16,240 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 04:34:16,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-25 04:34:16,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 04:34:16,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-09-25 04:34:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-25 04:34:16,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2020-09-25 04:34:16,254 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 69 [2020-09-25 04:34:16,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:34:16,254 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2020-09-25 04:34:16,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 04:34:16,255 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2020-09-25 04:34:16,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 04:34:16,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:34:16,259 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:34:16,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:34:16,259 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:34:16,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:34:16,260 INFO L82 PathProgramCache]: Analyzing trace with hash -330918067, now seen corresponding path program 5 times [2020-09-25 04:34:16,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:34:16,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017847876] [2020-09-25 04:34:16,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:34:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:16,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:16,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:16,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:16,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:16,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:17,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:17,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:17,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:17,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:21,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:21,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 04:34:21,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:34:21,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:34:21,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:21,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:34:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:34:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:34:21,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:21,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:34:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:21,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:21,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:21,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:34:21,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:34:21,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:34:21,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:21,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:21,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:34:21,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:34:21,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:34:21,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:21,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:34:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:21,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:21,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:21,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:21,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:21,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:22,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:22,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:22,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:34:26,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:34:26,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:34:26,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:34:26,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4793 [2020-09-25 04:34:26,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:34:26,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:34:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:34:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:34:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:34:26,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:34:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 04:34:26,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017847876] [2020-09-25 04:34:26,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:34:26,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 04:34:26,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106176233] [2020-09-25 04:34:26,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 04:34:26,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:34:26,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 04:34:26,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:34:26,525 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand 16 states. [2020-09-25 04:34:27,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:34:27,045 INFO L93 Difference]: Finished difference Result 143 states and 157 transitions. [2020-09-25 04:34:27,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:34:27,046 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 75 [2020-09-25 04:34:27,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:34:27,047 INFO L225 Difference]: With dead ends: 143 [2020-09-25 04:34:27,048 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 04:34:27,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-09-25 04:34:27,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 04:34:27,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2020-09-25 04:34:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-25 04:34:27,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2020-09-25 04:34:27,062 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 75 [2020-09-25 04:34:27,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:34:27,062 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2020-09-25 04:34:27,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 04:34:27,062 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2020-09-25 04:34:27,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 04:34:27,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:34:27,064 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:34:27,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 04:34:27,064 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:34:27,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:34:27,065 INFO L82 PathProgramCache]: Analyzing trace with hash 934554539, now seen corresponding path program 1 times [2020-09-25 04:34:27,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:34:27,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498626892] [2020-09-25 04:34:27,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:34:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:34:27,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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