/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 20:58:09,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 20:58:09,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 20:58:09,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 20:58:09,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 20:58:09,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 20:58:09,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 20:58:09,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 20:58:09,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 20:58:09,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 20:58:09,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 20:58:09,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 20:58:09,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 20:58:09,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 20:58:09,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 20:58:09,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 20:58:09,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 20:58:09,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 20:58:09,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 20:58:09,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 20:58:09,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 20:58:09,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 20:58:09,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 20:58:09,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 20:58:09,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 20:58:09,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 20:58:09,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 20:58:09,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 20:58:09,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 20:58:09,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 20:58:09,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 20:58:09,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 20:58:09,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 20:58:09,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 20:58:09,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 20:58:09,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 20:58:09,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 20:58:09,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 20:58:09,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 20:58:09,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 20:58:09,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 20:58:09,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 20:58:09,498 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 20:58:09,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 20:58:09,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 20:58:09,500 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 20:58:09,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 20:58:09,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 20:58:09,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 20:58:09,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 20:58:09,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 20:58:09,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 20:58:09,501 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 20:58:09,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 20:58:09,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 20:58:09,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 20:58:09,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 20:58:09,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 20:58:09,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 20:58:09,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 20:58:09,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:58:09,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 20:58:09,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 20:58:09,504 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 20:58:09,504 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 20:58:09,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 20:58:09,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 20:58:09,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 20:58:09,784 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 20:58:09,785 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 20:58:09,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-u_valuebound10.c [2021-05-02 20:58:09,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/887a5529b/267b858c718f4dedb2a532d90904e677/FLAGa3a4c2d91 [2021-05-02 20:58:10,162 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 20:58:10,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_valuebound10.c [2021-05-02 20:58:10,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/887a5529b/267b858c718f4dedb2a532d90904e677/FLAGa3a4c2d91 [2021-05-02 20:58:10,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/887a5529b/267b858c718f4dedb2a532d90904e677 [2021-05-02 20:58:10,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 20:58:10,564 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 20:58:10,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 20:58:10,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 20:58:10,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 20:58:10,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:58:10" (1/1) ... [2021-05-02 20:58:10,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d9be275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:58:10, skipping insertion in model container [2021-05-02 20:58:10,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:58:10" (1/1) ... [2021-05-02 20:58:10,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 20:58:10,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 20:58:10,695 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_valuebound10.c[545,558] [2021-05-02 20:58:10,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:58:10,712 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 20:58:10,722 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-u_valuebound10.c[545,558] [2021-05-02 20:58:10,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:58:10,796 INFO L208 MainTranslator]: Completed translation [2021-05-02 20:58:10,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:58:10 WrapperNode [2021-05-02 20:58:10,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 20:58:10,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 20:58:10,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 20:58:10,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 20:58:10,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:58:10" (1/1) ... [2021-05-02 20:58:10,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:58:10" (1/1) ... [2021-05-02 20:58:10,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:58:10" (1/1) ... [2021-05-02 20:58:10,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:58:10" (1/1) ... [2021-05-02 20:58:10,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:58:10" (1/1) ... [2021-05-02 20:58:10,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:58:10" (1/1) ... [2021-05-02 20:58:10,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:58:10" (1/1) ... [2021-05-02 20:58:10,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 20:58:10,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 20:58:10,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 20:58:10,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 20:58:10,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:58:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:58:10,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 20:58:10,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 20:58:10,863 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 20:58:10,864 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 20:58:10,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 20:58:10,864 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 20:58:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 20:58:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 20:58:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 20:58:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 20:58:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-05-02 20:58:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 20:58:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 20:58:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 20:58:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 20:58:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 20:58:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 20:58:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 20:58:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 20:58:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 20:58:11,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 20:58:11,051 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 20:58:11,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:58:11 BoogieIcfgContainer [2021-05-02 20:58:11,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 20:58:11,052 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 20:58:11,052 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 20:58:11,053 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 20:58:11,055 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:58:11" (1/1) ... [2021-05-02 20:58:11,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:58:11 BasicIcfg [2021-05-02 20:58:11,065 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 20:58:11,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 20:58:11,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 20:58:11,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 20:58:11,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 08:58:10" (1/4) ... [2021-05-02 20:58:11,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338879b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:58:11, skipping insertion in model container [2021-05-02 20:58:11,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:58:10" (2/4) ... [2021-05-02 20:58:11,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338879b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:58:11, skipping insertion in model container [2021-05-02 20:58:11,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:58:11" (3/4) ... [2021-05-02 20:58:11,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338879b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:58:11, skipping insertion in model container [2021-05-02 20:58:11,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:58:11" (4/4) ... [2021-05-02 20:58:11,069 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound10.cJordan [2021-05-02 20:58:11,072 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 20:58:11,074 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 20:58:11,084 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 20:58:11,094 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 20:58:11,094 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 20:58:11,094 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 20:58:11,095 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 20:58:11,095 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 20:58:11,095 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 20:58:11,095 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 20:58:11,095 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 20:58:11,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 20:58:11,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 20:58:11,107 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:58:11,107 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:58:11,107 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:58:11,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:58:11,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1011787902, now seen corresponding path program 1 times [2021-05-02 20:58:11,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:58:11,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66616936] [2021-05-02 20:58:11,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:58:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:11,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:58:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:11,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:58:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:11,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 20:58:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:11,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 20:58:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:58:11,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:58:11,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66616936] [2021-05-02 20:58:11,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66616936] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:58:11,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:58:11,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:58:11,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832384487] [2021-05-02 20:58:11,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:58:11,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:58:11,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:58:11,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:58:11,269 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 20:58:11,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:58:11,353 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-05-02 20:58:11,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:58:11,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2021-05-02 20:58:11,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:58:11,359 INFO L225 Difference]: With dead ends: 38 [2021-05-02 20:58:11,359 INFO L226 Difference]: Without dead ends: 33 [2021-05-02 20:58:11,360 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:58:11,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-02 20:58:11,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-02 20:58:11,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 20:58:11,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2021-05-02 20:58:11,381 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 28 [2021-05-02 20:58:11,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:58:11,381 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-05-02 20:58:11,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 20:58:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2021-05-02 20:58:11,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 20:58:11,382 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:58:11,382 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:58:11,382 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 20:58:11,383 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:58:11,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:58:11,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1710049411, now seen corresponding path program 1 times [2021-05-02 20:58:11,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:58:11,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814616276] [2021-05-02 20:58:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:58:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:11,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:58:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:11,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:58:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:11,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 20:58:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:11,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 20:58:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:11,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:58:11,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:58:11,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814616276] [2021-05-02 20:58:11,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814616276] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:58:11,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:58:11,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 20:58:11,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759063152] [2021-05-02 20:58:11,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:58:11,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:58:11,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:58:11,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:58:11,499 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-02 20:58:11,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:58:11,747 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2021-05-02 20:58:11,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 20:58:11,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2021-05-02 20:58:11,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:58:11,748 INFO L225 Difference]: With dead ends: 44 [2021-05-02 20:58:11,749 INFO L226 Difference]: Without dead ends: 44 [2021-05-02 20:58:11,750 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:58:11,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-02 20:58:11,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2021-05-02 20:58:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 20:58:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2021-05-02 20:58:11,769 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 28 [2021-05-02 20:58:11,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:58:11,770 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2021-05-02 20:58:11,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-02 20:58:11,770 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2021-05-02 20:58:11,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 20:58:11,774 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:58:11,774 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:58:11,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 20:58:11,774 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:58:11,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:58:11,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1042498848, now seen corresponding path program 1 times [2021-05-02 20:58:11,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:58:11,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911638366] [2021-05-02 20:58:11,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:58:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:11,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:58:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:11,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:58:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:11,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 20:58:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:11,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 20:58:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:11,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-02 20:58:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 20:58:11,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:58:11,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911638366] [2021-05-02 20:58:11,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911638366] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:58:11,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:58:11,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 20:58:11,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191629573] [2021-05-02 20:58:11,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:58:11,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:58:11,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:58:11,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:58:12,000 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:58:12,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:58:12,204 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2021-05-02 20:58:12,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 20:58:12,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-02 20:58:12,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:58:12,206 INFO L225 Difference]: With dead ends: 48 [2021-05-02 20:58:12,206 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 20:58:12,206 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 134.0ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:58:12,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 20:58:12,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2021-05-02 20:58:12,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 20:58:12,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-05-02 20:58:12,209 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2021-05-02 20:58:12,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:58:12,210 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-05-02 20:58:12,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:58:12,210 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-05-02 20:58:12,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-02 20:58:12,211 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:58:12,211 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:58:12,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 20:58:12,211 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:58:12,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:58:12,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1436069466, now seen corresponding path program 1 times [2021-05-02 20:58:12,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:58:12,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127041519] [2021-05-02 20:58:12,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:58:12,220 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:58:12,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1648797496] [2021-05-02 20:58:12,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:58:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:12,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 20:58:12,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:58:12,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:12,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:12,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:12,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:12,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:12,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:12,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 20:58:12,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:58:12,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127041519] [2021-05-02 20:58:12,517 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:58:12,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648797496] [2021-05-02 20:58:12,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648797496] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:58:12,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:58:12,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 20:58:12,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803409752] [2021-05-02 20:58:12,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 20:58:12,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:58:12,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 20:58:12,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:58:12,519 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 20:58:12,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:58:12,608 INFO L93 Difference]: Finished difference Result 56 states and 70 transitions. [2021-05-02 20:58:12,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:58:12,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2021-05-02 20:58:12,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:58:12,609 INFO L225 Difference]: With dead ends: 56 [2021-05-02 20:58:12,609 INFO L226 Difference]: Without dead ends: 55 [2021-05-02 20:58:12,609 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 34.5ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:58:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-02 20:58:12,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-05-02 20:58:12,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 20:58:12,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2021-05-02 20:58:12,613 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 38 [2021-05-02 20:58:12,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:58:12,613 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2021-05-02 20:58:12,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 20:58:12,614 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2021-05-02 20:58:12,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 20:58:12,614 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:58:12,614 INFO L523 BasicCegarLoop]: trace histogram [4, 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] [2021-05-02 20:58:12,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:58:12,833 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:58:12,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:58:12,833 INFO L82 PathProgramCache]: Analyzing trace with hash 5711864, now seen corresponding path program 1 times [2021-05-02 20:58:12,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:58:12,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385731829] [2021-05-02 20:58:12,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:58:12,841 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:58:12,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926231611] [2021-05-02 20:58:12,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:58:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:12,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 20:58:12,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:58:12,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:12,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:12,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:12,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:12,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:12,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:12,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:12,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:12,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-05-02 20:58:13,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:58:13,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385731829] [2021-05-02 20:58:13,029 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:58:13,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926231611] [2021-05-02 20:58:13,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926231611] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:58:13,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:58:13,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 20:58:13,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617509806] [2021-05-02 20:58:13,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 20:58:13,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:58:13,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 20:58:13,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:58:13,030 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-05-02 20:58:13,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:58:13,112 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2021-05-02 20:58:13,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:58:13,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 45 [2021-05-02 20:58:13,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:58:13,113 INFO L225 Difference]: With dead ends: 66 [2021-05-02 20:58:13,113 INFO L226 Difference]: Without dead ends: 61 [2021-05-02 20:58:13,113 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 33.2ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:58:13,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-02 20:58:13,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2021-05-02 20:58:13,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 36 states have internal predecessors, (40), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 20:58:13,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2021-05-02 20:58:13,117 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 45 [2021-05-02 20:58:13,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:58:13,118 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2021-05-02 20:58:13,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-05-02 20:58:13,137 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2021-05-02 20:58:13,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 20:58:13,138 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:58:13,138 INFO L523 BasicCegarLoop]: trace histogram [6, 5, 5, 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] [2021-05-02 20:58:13,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:58:13,354 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:58:13,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:58:13,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1597443315, now seen corresponding path program 1 times [2021-05-02 20:58:13,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:58:13,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830312475] [2021-05-02 20:58:13,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:58:13,362 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:58:13,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649578152] [2021-05-02 20:58:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:58:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:13,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 20:58:13,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:58:13,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:13,712 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-05-02 20:58:13,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:58:13,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830312475] [2021-05-02 20:58:13,712 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:58:13,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649578152] [2021-05-02 20:58:13,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649578152] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:58:13,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:58:13,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 20:58:13,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43825397] [2021-05-02 20:58:13,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 20:58:13,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:58:13,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 20:58:13,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:58:13,713 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-05-02 20:58:13,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:58:13,905 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2021-05-02 20:58:13,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:58:13,905 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 55 [2021-05-02 20:58:13,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:58:13,907 INFO L225 Difference]: With dead ends: 73 [2021-05-02 20:58:13,907 INFO L226 Difference]: Without dead ends: 73 [2021-05-02 20:58:13,907 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 101.6ms TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:58:13,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-05-02 20:58:13,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-05-02 20:58:13,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 41 states have (on average 1.170731707317073) internal successors, (48), 43 states have internal predecessors, (48), 23 states have call successors, (23), 9 states have call predecessors, (23), 8 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-02 20:58:13,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 92 transitions. [2021-05-02 20:58:13,912 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 92 transitions. Word has length 55 [2021-05-02 20:58:13,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:58:13,912 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 92 transitions. [2021-05-02 20:58:13,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-05-02 20:58:13,912 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 92 transitions. [2021-05-02 20:58:13,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-02 20:58:13,913 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:58:13,913 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:58:14,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:58:14,117 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:58:14,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:58:14,117 INFO L82 PathProgramCache]: Analyzing trace with hash 294687610, now seen corresponding path program 2 times [2021-05-02 20:58:14,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:58:14,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867122688] [2021-05-02 20:58:14,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:58:14,124 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:58:14,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108189974] [2021-05-02 20:58:14,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:58:14,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:58:14,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:58:14,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 20:58:14,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:58:14,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:14,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:15,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:15,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:16,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:16,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:35,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:35,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-05-02 20:58:43,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:58:43,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867122688] [2021-05-02 20:58:43,046 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:58:43,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108189974] [2021-05-02 20:58:43,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108189974] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:58:43,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:58:43,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-02 20:58:43,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036577291] [2021-05-02 20:58:43,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 20:58:43,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:58:43,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 20:58:43,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-05-02 20:58:43,047 INFO L87 Difference]: Start difference. First operand 73 states and 92 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2021-05-02 20:58:46,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:58:46,497 INFO L93 Difference]: Finished difference Result 86 states and 110 transitions. [2021-05-02 20:58:46,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 20:58:46,497 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 72 [2021-05-02 20:58:46,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:58:46,498 INFO L225 Difference]: With dead ends: 86 [2021-05-02 20:58:46,498 INFO L226 Difference]: Without dead ends: 86 [2021-05-02 20:58:46,499 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 321.9ms TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-05-02 20:58:46,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-02 20:58:46,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2021-05-02 20:58:46,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 50 states have internal predecessors, (55), 28 states have call successors, (28), 10 states have call predecessors, (28), 9 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 20:58:46,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2021-05-02 20:58:46,504 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 72 [2021-05-02 20:58:46,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:58:46,504 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2021-05-02 20:58:46,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2021-05-02 20:58:46,504 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2021-05-02 20:58:46,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 20:58:46,505 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:58:46,505 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 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] [2021-05-02 20:58:46,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:58:46,710 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:58:46,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:58:46,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1689231171, now seen corresponding path program 1 times [2021-05-02 20:58:46,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:58:46,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687993316] [2021-05-02 20:58:46,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:58:46,717 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:58:46,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860526750] [2021-05-02 20:58:46,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:58:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:58:46,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 20:58:46,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:58:47,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:58:47,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:00:04,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:00:04,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:00:04,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:00:04,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:00:04,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:00:04,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:00:04,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:00:05,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:00:05,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:00:05,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:00:05,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:00:05,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:00:05,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:00:05,231 WARN L159 QuantifierPusher]: Ignoring assumption.