/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/loop-lit/cggmp2005_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 05:54:04,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 05:54:04,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 05:54:04,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 05:54:04,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 05:54:04,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 05:54:04,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 05:54:04,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 05:54:04,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 05:54:04,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 05:54:04,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 05:54:04,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 05:54:04,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 05:54:04,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 05:54:04,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 05:54:04,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 05:54:04,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 05:54:04,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 05:54:04,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 05:54:04,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 05:54:04,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 05:54:04,814 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 05:54:04,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 05:54:04,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 05:54:04,817 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 05:54:04,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 05:54:04,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 05:54:04,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 05:54:04,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 05:54:04,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 05:54:04,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 05:54:04,818 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 05:54:04,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 05:54:04,819 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 05:54:04,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 05:54:04,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 05:54:04,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 05:54:04,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 05:54:04,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 05:54:04,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 05:54:04,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 05:54:04,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 05:54:04,821 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 05:54:04,821 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 05:54:05,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 05:54:05,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 05:54:05,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 05:54:05,091 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 05:54:05,092 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 05:54:05,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2021-05-06 05:54:05,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3174e7e2a/a117d5c46c6d4024b7403961b3484747/FLAG10a700539 [2021-05-06 05:54:05,565 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 05:54:05,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2021-05-06 05:54:05,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3174e7e2a/a117d5c46c6d4024b7403961b3484747/FLAG10a700539 [2021-05-06 05:54:05,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3174e7e2a/a117d5c46c6d4024b7403961b3484747 [2021-05-06 05:54:05,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 05:54:05,591 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 05:54:05,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 05:54:05,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 05:54:05,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 05:54:05,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 05:54:05" (1/1) ... [2021-05-06 05:54:05,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15783981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:54:05, skipping insertion in model container [2021-05-06 05:54:05,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 05:54:05" (1/1) ... [2021-05-06 05:54:05,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 05:54:05,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 05:54:05,729 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005_variant.i[895,908] [2021-05-06 05:54:05,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 05:54:05,741 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 05:54:05,781 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005_variant.i[895,908] [2021-05-06 05:54:05,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 05:54:05,792 INFO L208 MainTranslator]: Completed translation [2021-05-06 05:54:05,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:54:05 WrapperNode [2021-05-06 05:54:05,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 05:54:05,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 05:54:05,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 05:54:05,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 05:54:05,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:54:05" (1/1) ... [2021-05-06 05:54:05,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:54:05" (1/1) ... [2021-05-06 05:54:05,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:54:05" (1/1) ... [2021-05-06 05:54:05,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:54:05" (1/1) ... [2021-05-06 05:54:05,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:54:05" (1/1) ... [2021-05-06 05:54:05,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:54:05" (1/1) ... [2021-05-06 05:54:05,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:54:05" (1/1) ... [2021-05-06 05:54:05,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 05:54:05,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 05:54:05,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 05:54:05,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 05:54:05,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:54:05" (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 [2021-05-06 05:54:05,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 05:54:05,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 05:54:05,877 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 05:54:05,877 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 05:54:05,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 05:54:05,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 05:54:05,877 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 05:54:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 05:54:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 05:54:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 05:54:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 05:54:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 05:54:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 05:54:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 05:54:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 05:54:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 05:54:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 05:54:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 05:54:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 05:54:05,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 05:54:05,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 05:54:05,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 05:54:06,067 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 05:54:06,067 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 05:54:06,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:54:06 BoogieIcfgContainer [2021-05-06 05:54:06,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 05:54:06,069 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 05:54:06,069 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 05:54:06,070 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 05:54:06,071 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:54:06" (1/1) ... [2021-05-06 05:54:06,208 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 88.1 percent of original size [2021-05-06 05:54:06,294 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 88.1 percent of original size 52 [2021-05-06 05:54:06,319 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=2, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 05:54:06,320 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~hi~0_3 (+ v_main_~hi~0_4 (- 1))) (= v_main_~mid~0_4 (+ v_main_~mid~0_5 (- 1))) (= v_main_~lo~0_2 (+ v_main_~lo~0_3 1)) (< 0 v_main_~mid~0_5)) InVars {main_~lo~0=v_main_~lo~0_3, main_~mid~0=v_main_~mid~0_5, main_~hi~0=v_main_~hi~0_4} OutVars{main_~lo~0=v_main_~lo~0_2, main_~mid~0=v_main_~mid~0_4, main_~hi~0=v_main_~hi~0_3} AuxVars[] AssignedVars[main_~lo~0, main_~mid~0, main_~hi~0] to Formula: (or (and (= v_itFin_1 0) (<= v_main_~mid~0_5 0) (= v_main_~lo~0_3 v_main_~lo~0_2) (= v_main_~mid~0_5 v_main_~mid~0_4) (= v_main_~hi~0_4 v_main_~hi~0_3)) (and (= (+ v_itFin_1 v_main_~mid~0_4) v_main_~mid~0_5) (= v_main_~lo~0_2 (+ v_itFin_1 v_main_~lo~0_3)) (< 0 v_itFin_1) (< v_itFin_1 (+ v_main_~mid~0_5 1)) (= v_main_~hi~0_4 (+ v_itFin_1 v_main_~hi~0_3)))) InVars {main_~lo~0=v_main_~lo~0_3, main_~mid~0=v_main_~mid~0_5, main_~hi~0=v_main_~hi~0_4} OutVars{main_~lo~0=v_main_~lo~0_2, main_~mid~0=v_main_~mid~0_4, main_~hi~0=v_main_~hi~0_3} AuxVars[v_itFin_1] AssignedVars[main_~lo~0, main_~mid~0, main_~hi~0] [2021-05-06 05:54:06,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 05:54:06 BasicIcfg [2021-05-06 05:54:06,327 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 05:54:06,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 05:54:06,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 05:54:06,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 05:54:06,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 05:54:05" (1/4) ... [2021-05-06 05:54:06,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8350e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 05:54:06, skipping insertion in model container [2021-05-06 05:54:06,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 05:54:05" (2/4) ... [2021-05-06 05:54:06,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8350e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 05:54:06, skipping insertion in model container [2021-05-06 05:54:06,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 05:54:06" (3/4) ... [2021-05-06 05:54:06,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8350e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 05:54:06, skipping insertion in model container [2021-05-06 05:54:06,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 05:54:06" (4/4) ... [2021-05-06 05:54:06,335 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.iJordan [2021-05-06 05:54:06,340 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 05:54:06,343 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 05:54:06,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 05:54:06,379 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 05:54:06,379 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 05:54:06,379 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 05:54:06,379 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 05:54:06,379 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 05:54:06,379 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 05:54:06,380 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 05:54:06,380 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 05:54:06,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 05:54:06,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 05:54:06,396 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:54:06,397 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 05:54:06,397 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:54:06,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:54:06,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1291699483, now seen corresponding path program 1 times [2021-05-06 05:54:06,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:54:06,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528289501] [2021-05-06 05:54:06,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:54:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:54:06,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:54:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:54:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:54:06,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:54:06,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528289501] [2021-05-06 05:54:06,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528289501] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 05:54:06,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 05:54:06,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 05:54:06,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234337182] [2021-05-06 05:54:06,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 05:54:06,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:54:06,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 05:54:06,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 05:54:06,588 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:54:06,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:54:06,619 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-06 05:54:06,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 05:54:06,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 05:54:06,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:54:06,626 INFO L225 Difference]: With dead ends: 20 [2021-05-06 05:54:06,626 INFO L226 Difference]: Without dead ends: 13 [2021-05-06 05:54:06,627 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 05:54:06,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-06 05:54:06,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-06 05:54:06,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:54:06,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-06 05:54:06,659 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2021-05-06 05:54:06,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:54:06,659 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-06 05:54:06,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:54:06,659 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-06 05:54:06,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 05:54:06,660 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:54:06,661 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 05:54:06,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 05:54:06,661 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:54:06,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:54:06,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1292623004, now seen corresponding path program 1 times [2021-05-06 05:54:06,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:54:06,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050028132] [2021-05-06 05:54:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:54:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:54:06,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:54:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:54:06,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:54:06,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:54:06,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050028132] [2021-05-06 05:54:06,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050028132] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 05:54:06,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 05:54:06,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 05:54:06,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372487201] [2021-05-06 05:54:06,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 05:54:06,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 05:54:06,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 05:54:06,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 05:54:06,756 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:54:06,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 05:54:06,795 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-05-06 05:54:06,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 05:54:06,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 05:54:06,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 05:54:06,796 INFO L225 Difference]: With dead ends: 14 [2021-05-06 05:54:06,796 INFO L226 Difference]: Without dead ends: 14 [2021-05-06 05:54:06,797 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 05:54:06,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-06 05:54:06,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-06 05:54:06,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:54:06,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-06 05:54:06,802 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-05-06 05:54:06,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 05:54:06,802 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-06 05:54:06,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 05:54:06,803 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-06 05:54:06,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-06 05:54:06,805 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 05:54:06,806 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 05:54:06,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 05:54:06,806 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 05:54:06,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 05:54:06,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1443329038, now seen corresponding path program 1 times [2021-05-06 05:54:06,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 05:54:06,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22909153] [2021-05-06 05:54:06,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 05:54:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:54:06,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 05:54:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:54:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 05:54:06,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 05:54:06,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22909153] [2021-05-06 05:54:06,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22909153] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 05:54:06,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949339397] [2021-05-06 05:54:06,961 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 [2021-05-06 05:54:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 05:54:07,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 05:54:07,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 05:54:07,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:54:07,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:54:07,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:54:07,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:54:07,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:54:07,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:54:07,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:54:07,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:54:07,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:54:07,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:54:07,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:54:07,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:54:07,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:54:07,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 05:54:07,579 WARN L159 QuantifierPusher]: Ignoring assumption.