/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-c225d54 [2021-05-02 18:09:49,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:09:49,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:09:49,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:09:49,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:09:49,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:09:49,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:09:49,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:09:49,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:09:49,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:09:49,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:09:49,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:09:49,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:09:49,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:09:49,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:09:49,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:09:49,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:09:49,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:09:49,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:09:49,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:09:49,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:09:49,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:09:49,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:09:49,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:09:49,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:09:49,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:09:49,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:09:49,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:09:49,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:09:49,834 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:09:49,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:09:49,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:09:49,837 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:09:49,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:09:49,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:09:49,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:09:49,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:09:49,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:09:49,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:09:49,839 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:09:49,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:09:49,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:09:49,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:09:49,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:09:49,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:09:49,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:09:49,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:09:49,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:09:49,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:09:49,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:09:49,842 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:09:49,842 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:09:50,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:09:50,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:09:50,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:09:50,167 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:09:50,167 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:09:50,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2021-05-02 18:09:50,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab311486c/b88170734a3c448caf45e479998187d1/FLAG1c0a1f773 [2021-05-02 18:09:50,717 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:09:50,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2021-05-02 18:09:50,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab311486c/b88170734a3c448caf45e479998187d1/FLAG1c0a1f773 [2021-05-02 18:09:51,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab311486c/b88170734a3c448caf45e479998187d1 [2021-05-02 18:09:51,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:09:51,232 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:09:51,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:09:51,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:09:51,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:09:51,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:09:51" (1/1) ... [2021-05-02 18:09:51,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ca4574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:51, skipping insertion in model container [2021-05-02 18:09:51,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:09:51" (1/1) ... [2021-05-02 18:09:51,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:09:51,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:09:51,355 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] [2021-05-02 18:09:51,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:09:51,370 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:09:51,405 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] [2021-05-02 18:09:51,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:09:51,440 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:09:51,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:51 WrapperNode [2021-05-02 18:09:51,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:09:51,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:09:51,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:09:51,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:09:51,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:51" (1/1) ... [2021-05-02 18:09:51,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:51" (1/1) ... [2021-05-02 18:09:51,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:51" (1/1) ... [2021-05-02 18:09:51,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:51" (1/1) ... [2021-05-02 18:09:51,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:51" (1/1) ... [2021-05-02 18:09:51,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:51" (1/1) ... [2021-05-02 18:09:51,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:51" (1/1) ... [2021-05-02 18:09:51,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:09:51,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:09:51,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:09:51,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:09:51,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:51" (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 18:09:51,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:09:51,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:09:51,543 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:09:51,543 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 18:09:51,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:09:51,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:09:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:09:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:09:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 18:09:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 18:09:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:09:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:09:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 18:09:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:09:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 18:09:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:09:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:09:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:09:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:09:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:09:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:09:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:09:51,825 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:09:51,826 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 18:09:51,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:09:51 BoogieIcfgContainer [2021-05-02 18:09:51,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:09:51,828 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:09:51,828 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:09:51,829 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:09:51,831 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:09:51" (1/1) ... [2021-05-02 18:09:51,899 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< 0 v_main_~mid~0_5) InVars {main_~mid~0=v_main_~mid~0_5} OutVars{main_~mid~0=v_main_~mid~0_5} AuxVars[] AssignedVars[] [2021-05-02 18:09:51,930 WARN L240 tifierPushTermWalker]: treesize reduction 8, result has 87.3 percent of original size [2021-05-02 18:09:52,003 WARN L245 tifierPushTermWalker]: treesize reduction 8, result has 87.3 percent of original size 55 [2021-05-02 18:09:52,029 INFO L1112 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] with Formula: (or (and (= (+ v_itFin_1 v_main_~mid~0_4) v_main_~mid~0_5) (<= v_main_~mid~0_5 v_itFin_1) (= v_main_~lo~0_2 (+ v_itFin_1 v_main_~lo~0_3)) (< v_itFin_1 (+ v_main_~mid~0_5 1)) (= v_main_~hi~0_4 (+ v_itFin_1 v_main_~hi~0_3)) (< 0 v_main_~mid~0_5)) (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))) 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] [2021-05-02 18:09:52,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:09:52 BasicIcfg [2021-05-02 18:09:52,037 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:09:52,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:09:52,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:09:52,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:09:52,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:09:51" (1/4) ... [2021-05-02 18:09:52,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6308ac91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:09:52, skipping insertion in model container [2021-05-02 18:09:52,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:09:51" (2/4) ... [2021-05-02 18:09:52,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6308ac91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:09:52, skipping insertion in model container [2021-05-02 18:09:52,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:09:51" (3/4) ... [2021-05-02 18:09:52,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6308ac91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:09:52, skipping insertion in model container [2021-05-02 18:09:52,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:09:52" (4/4) ... [2021-05-02 18:09:52,045 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.iJordan [2021-05-02 18:09:52,050 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:09:52,053 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:09:52,067 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:09:52,082 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:09:52,082 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:09:52,083 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:09:52,083 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:09:52,083 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:09:52,083 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:09:52,083 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:09:52,083 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:09:52,094 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) [2021-05-02 18:09:52,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:09:52,100 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:09:52,100 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:09:52,101 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:09:52,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:09:52,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1291699483, now seen corresponding path program 1 times [2021-05-02 18:09:52,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:09:52,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158827660] [2021-05-02 18:09:52,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:09:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:52,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:09:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:52,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:09:52,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:09:52,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158827660] [2021-05-02 18:09:52,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158827660] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:09:52,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:09:52,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:09:52,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405484580] [2021-05-02 18:09:52,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:09:52,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:09:52,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:09:52,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:09:52,339 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) [2021-05-02 18:09:52,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:09:52,376 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-02 18:09:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:09:52,378 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 [2021-05-02 18:09:52,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:09:52,386 INFO L225 Difference]: With dead ends: 20 [2021-05-02 18:09:52,386 INFO L226 Difference]: Without dead ends: 13 [2021-05-02 18:09:52,387 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:09:52,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-02 18:09:52,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-02 18:09:52,429 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) [2021-05-02 18:09:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-02 18:09:52,431 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2021-05-02 18:09:52,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:09:52,432 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-02 18:09:52,432 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) [2021-05-02 18:09:52,432 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-02 18:09:52,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:09:52,433 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:09:52,433 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:09:52,434 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:09:52,434 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:09:52,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:09:52,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1292623004, now seen corresponding path program 1 times [2021-05-02 18:09:52,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:09:52,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956965462] [2021-05-02 18:09:52,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:09:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:52,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:09:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:52,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:09:52,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:09:52,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956965462] [2021-05-02 18:09:52,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956965462] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:09:52,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:09:52,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:09:52,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886530361] [2021-05-02 18:09:52,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:09:52,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:09:52,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:09:52,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:09:52,550 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) [2021-05-02 18:09:52,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:09:52,603 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-05-02 18:09:52,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:09:52,604 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 [2021-05-02 18:09:52,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:09:52,604 INFO L225 Difference]: With dead ends: 14 [2021-05-02 18:09:52,604 INFO L226 Difference]: Without dead ends: 14 [2021-05-02 18:09:52,605 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:09:52,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-02 18:09:52,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-02 18:09:52,611 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) [2021-05-02 18:09:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-02 18:09:52,613 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-05-02 18:09:52,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:09:52,613 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-02 18:09:52,613 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) [2021-05-02 18:09:52,614 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-02 18:09:52,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 18:09:52,617 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:09:52,617 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:09:52,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:09:52,617 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:09:52,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:09:52,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1443329038, now seen corresponding path program 1 times [2021-05-02 18:09:52,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:09:52,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29733655] [2021-05-02 18:09:52,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:09:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:52,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:09:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:52,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:09:52,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:09:52,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29733655] [2021-05-02 18:09:52,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29733655] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:09:52,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582376245] [2021-05-02 18:09:52,766 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 18:09:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:09:52,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 18:09:52,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:09:52,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:52,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:53,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:53,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:53,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:53,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:53,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:53,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:53,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:53,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:53,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:53,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:53,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:53,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:09:53,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:10:10,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:10:17,445 WARN L205 SmtUtils]: Spent 6.35 s on a formula simplification. DAG size of input: 5927 DAG size of output: 5915 [2021-05-02 18:10:17,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:26,802 WARN L205 SmtUtils]: Spent 1.14 m on a formula simplification. DAG size of input: 17273 DAG size of output: 5768 [2021-05-02 18:11:27,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:12:37,746 WARN L205 SmtUtils]: Spent 1.17 m on a formula simplification. DAG size of input: 17178 DAG size of output: 5716 [2021-05-02 18:12:38,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:13:44,778 WARN L205 SmtUtils]: Spent 1.10 m on a formula simplification. DAG size of input: 17078 DAG size of output: 5660 [2021-05-02 18:13:45,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:14:56,981 WARN L205 SmtUtils]: Spent 1.19 m on a formula simplification. DAG size of input: 16975 DAG size of output: 5600 [2021-05-02 18:14:57,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:16:10,882 WARN L205 SmtUtils]: Spent 1.22 m on a formula simplification. DAG size of input: 16814 DAG size of output: 5509 [2021-05-02 18:16:11,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:17:19,576 WARN L205 SmtUtils]: Spent 1.13 m on a formula simplification. DAG size of input: 16711 DAG size of output: 5449 [2021-05-02 18:17:20,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:18:29,214 WARN L205 SmtUtils]: Spent 1.15 m on a formula simplification. DAG size of input: 16603 DAG size of output: 5384 [2021-05-02 18:18:29,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:46,856 WARN L205 SmtUtils]: Spent 1.28 m on a formula simplification. DAG size of input: 19009 DAG size of output: 18642 [2021-05-02 18:19:48,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:19:48,499 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 2284 DAG size of output: 1571