/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-new/gauss_sum.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:21:24,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:21:24,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:21:24,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:21:24,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:21:24,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:21:24,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:21:24,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:21:24,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:21:24,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:21:24,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:21:24,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:21:24,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:21:24,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:21:24,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:21:24,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:21:24,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:21:24,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:21:24,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:21:24,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:21:24,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:21:24,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:21:24,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:21:24,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:21:24,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:21:24,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:21:24,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:21:24,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:21:24,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:21:24,498 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:21:24,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:21:24,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:21:24,499 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:21:24,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:21:24,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:21:24,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:21:24,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:21:24,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:21:24,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:21:24,500 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:21:24,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:21:24,501 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:21:24,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:21:24,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:21:24,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:21:24,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:21:24,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:21:24,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:21:24,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:21:24,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:21:24,502 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:21:24,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:21:24,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:21:24,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:21:24,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:21:24,764 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:21:24,768 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:21:24,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c [2021-05-02 18:21:24,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d1ce5f2/9c03d623a2484d93a4a77325cde327b4/FLAG83ba82501 [2021-05-02 18:21:25,182 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:21:25,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c [2021-05-02 18:21:25,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d1ce5f2/9c03d623a2484d93a4a77325cde327b4/FLAG83ba82501 [2021-05-02 18:21:25,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d1ce5f2/9c03d623a2484d93a4a77325cde327b4 [2021-05-02 18:21:25,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:21:25,607 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:21:25,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:21:25,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:21:25,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:21:25,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:21:25" (1/1) ... [2021-05-02 18:21:25,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4117554c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:25, skipping insertion in model container [2021-05-02 18:21:25,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:21:25" (1/1) ... [2021-05-02 18:21:25,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:21:25,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:21:25,747 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-new/gauss_sum.i.p+lhb-reducer.c[1444,1457] [2021-05-02 18:21:25,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:21:25,763 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:21:25,786 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-new/gauss_sum.i.p+lhb-reducer.c[1444,1457] [2021-05-02 18:21:25,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:21:25,810 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:21:25,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:25 WrapperNode [2021-05-02 18:21:25,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:21:25,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:21:25,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:21:25,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:21:25,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:25" (1/1) ... [2021-05-02 18:21:25,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:25" (1/1) ... [2021-05-02 18:21:25,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:25" (1/1) ... [2021-05-02 18:21:25,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:25" (1/1) ... [2021-05-02 18:21:25,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:25" (1/1) ... [2021-05-02 18:21:25,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:25" (1/1) ... [2021-05-02 18:21:25,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:25" (1/1) ... [2021-05-02 18:21:25,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:21:25,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:21:25,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:21:25,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:21:25,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:25" (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 18:21:25,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:21:25,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:21:25,903 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:21:25,904 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 18:21:25,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:21:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:21:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:21:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:21:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:21:25,904 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 18:21:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:21:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 18:21:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:21:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:21:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:21:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:21:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:21:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:21:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:21:26,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:21:26,153 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-02 18:21:26,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:21:26 BoogieIcfgContainer [2021-05-02 18:21:26,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:21:26,154 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:21:26,154 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:21:26,155 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:21:26,156 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:21:26" (1/1) ... [2021-05-02 18:21:26,207 INFO L181 rdanLoopAcceleration]: Guard: Formula: (<= v_main_~main__i~0_4 v_main_~main__n~0_2) InVars {main_~main__n~0=v_main_~main__n~0_2, main_~main__i~0=v_main_~main__i~0_4} OutVars{main_~main__n~0=v_main_~main__n~0_2, main_~main__i~0=v_main_~main__i~0_4} AuxVars[] AssignedVars[] [2021-05-02 18:21:26,264 WARN L240 tifierPushTermWalker]: treesize reduction 14, result has 91.9 percent of original size [2021-05-02 18:21:26,423 WARN L245 tifierPushTermWalker]: treesize reduction 14, result has 91.9 percent of original size 158 [2021-05-02 18:21:26,510 INFO L1112 elerationTransformer]: Accelerated Formula: (and (= v_main_~main__sum~0_3 (+ v_main_~main__i~0_4 v_main_~main__sum~0_4)) (<= v_main_~main__i~0_4 v_main_~main__n~0_2) (= v_main_~main__i~0_3 (+ v_main_~main__i~0_4 1))) InVars {main_~main__n~0=v_main_~main__n~0_2, main_~main__sum~0=v_main_~main__sum~0_4, main_~main__i~0=v_main_~main__i~0_4} OutVars{main_~main__n~0=v_main_~main__n~0_2, main_~main__sum~0=v_main_~main__sum~0_3, main_~main__i~0=v_main_~main__i~0_3} AuxVars[] AssignedVars[main_~main__sum~0, main_~main__i~0] with Formula: (let ((.cse2 (* v_main_~main__i~0_4 (- 1))) (.cse0 (* 2 (* v_itFinHalf_1 v_itFinHalf_1))) (.cse1 (* 2 (* v_itFinHalf_1 v_main_~main__i~0_4))) (.cse4 (* 2 v_itFinHalf_1))) (or (let ((.cse3 (+ .cse4 v_main_~main__i~0_4))) (and (= (+ .cse0 .cse1 v_main_~main__sum~0_4) (+ v_main_~main__sum~0_3 v_itFinHalf_1)) (<= v_itFinHalf_1 (+ (div (+ .cse2 v_main_~main__n~0_2 (- 1)) 2) 1)) (< v_main_~main__n~0_2 .cse3) (< 0 v_itFinHalf_1) (= .cse3 v_main_~main__i~0_3))) (and (= v_main_~main__i~0_4 v_main_~main__i~0_3) (< v_main_~main__n~0_2 v_main_~main__i~0_4) (= v_itFinHalf_1 0) (= v_main_~main__sum~0_4 v_main_~main__sum~0_3)) (let ((.cse5 (+ .cse4 v_main_~main__i~0_4 1))) (and (<= v_main_~main__i~0_4 v_main_~main__n~0_2) (< v_main_~main__n~0_2 .cse5) (<= v_itFinHalf_1 (div (+ .cse2 v_main_~main__n~0_2) 2)) (= .cse5 v_main_~main__i~0_3) (= (+ .cse0 v_itFinHalf_1 .cse1 v_main_~main__i~0_4 v_main_~main__sum~0_4) v_main_~main__sum~0_3))))) InVars {main_~main__n~0=v_main_~main__n~0_2, main_~main__sum~0=v_main_~main__sum~0_4, main_~main__i~0=v_main_~main__i~0_4} OutVars{main_~main__n~0=v_main_~main__n~0_2, main_~main__sum~0=v_main_~main__sum~0_3, main_~main__i~0=v_main_~main__i~0_3} AuxVars[v_itFinHalf_1] AssignedVars[main_~main__sum~0, main_~main__i~0] [2021-05-02 18:21:26,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:21:26 BasicIcfg [2021-05-02 18:21:26,517 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:21:26,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:21:26,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:21:26,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:21:26,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:21:25" (1/4) ... [2021-05-02 18:21:26,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0b52f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:21:26, skipping insertion in model container [2021-05-02 18:21:26,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:25" (2/4) ... [2021-05-02 18:21:26,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0b52f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:21:26, skipping insertion in model container [2021-05-02 18:21:26,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:21:26" (3/4) ... [2021-05-02 18:21:26,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0b52f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:21:26, skipping insertion in model container [2021-05-02 18:21:26,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:21:26" (4/4) ... [2021-05-02 18:21:26,535 INFO L111 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.p+lhb-reducer.cJordan [2021-05-02 18:21:26,539 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:21:26,541 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:21:26,551 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:21:26,561 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:21:26,561 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:21:26,561 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:21:26,561 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:21:26,562 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:21:26,562 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:21:26,562 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:21:26,562 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:21:26,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 18:21:26,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-02 18:21:26,573 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:26,574 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:26,574 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:26,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:26,577 INFO L82 PathProgramCache]: Analyzing trace with hash 456799944, now seen corresponding path program 1 times [2021-05-02 18:21:26,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:26,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99390356] [2021-05-02 18:21:26,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:26,643 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 18:21:26,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393865305] [2021-05-02 18:21:26,643 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 18:21:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:26,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 18:21:26,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:26,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,923 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 18:21:26,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:26,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99390356] [2021-05-02 18:21:26,924 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 18:21:26,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393865305] [2021-05-02 18:21:26,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393865305] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:21:26,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:21:26,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-02 18:21:26,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922639398] [2021-05-02 18:21:26,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 18:21:26,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:26,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 18:21:26,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-02 18:21:26,936 INFO L87 Difference]: Start difference. First operand has 21 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:27,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:27,067 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2021-05-02 18:21:27,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 18:21:27,068 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-05-02 18:21:27,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:27,073 INFO L225 Difference]: With dead ends: 35 [2021-05-02 18:21:27,073 INFO L226 Difference]: Without dead ends: 18 [2021-05-02 18:21:27,074 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:21:27,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-02 18:21:27,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-02 18:21:27,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-02 18:21:27,094 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2021-05-02 18:21:27,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:27,094 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-02 18:21:27,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:27,095 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-02 18:21:27,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 18:21:27,095 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:27,096 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:27,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-05-02 18:21:27,309 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:27,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:27,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1275865648, now seen corresponding path program 1 times [2021-05-02 18:21:27,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:27,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525253502] [2021-05-02 18:21:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:27,325 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 18:21:27,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040137559] [2021-05-02 18:21:27,326 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