/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-6253b08 [2021-05-06 06:06:42,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:06:42,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:06:42,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 06:06:42,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 06:06:42,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 06:06:42,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 06:06:42,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 06:06:42,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 06:06:42,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 06:06:42,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 06:06:42,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 06:06:42,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:06:42,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:06:42,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:06:42,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:06:42,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:06:42,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:06:42,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:06:42,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:06:42,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:06:42,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:06:42,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:06:42,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:06:42,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-06 06:06:42,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-06 06:06:42,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-06 06:06:42,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-06 06:06:42,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-06 06:06:42,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-06 06:06:42,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-06 06:06:42,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-06 06:06:42,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-06 06:06:42,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-06 06:06:42,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-06 06:06:42,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-06 06:06:42,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-06 06:06:42,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-06 06:06:42,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:06:42,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:06:42,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:06:42,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:06:42,653 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:06:42,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:06:42,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:06:42,655 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:06:42,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:06:42,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:06:42,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:06:42,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:06:42,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:06:42,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:06:42,656 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:06:42,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:06:42,657 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:06:42,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:06:42,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:06:42,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:06:42,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:06:42,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:06:42,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:06:42,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:06:42,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:06:42,659 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:06:42,659 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:06:42,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:06:42,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:06:42,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:06:42,928 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:06:42,929 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:06:42,929 INFO L432 ainManager$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 [2021-05-06 06:06:42,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd13b099e/c6aa2b3039a9423786f323edc7a4ce5a/FLAG6d3683ee4 [2021-05-06 06:06:43,344 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:06:43,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i.p+lhb-reducer.c [2021-05-06 06:06:43,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd13b099e/c6aa2b3039a9423786f323edc7a4ce5a/FLAG6d3683ee4 [2021-05-06 06:06:43,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd13b099e/c6aa2b3039a9423786f323edc7a4ce5a [2021-05-06 06:06:43,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:06:43,371 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:06:43,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:06:43,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:06:43,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:06:43,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:06:43" (1/1) ... [2021-05-06 06:06:43,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a9af2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:43, skipping insertion in model container [2021-05-06 06:06:43,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:06:43" (1/1) ... [2021-05-06 06:06:43,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:06:43,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:06:43,541 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] [2021-05-06 06:06:43,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:06:43,551 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:06:43,595 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] [2021-05-06 06:06:43,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:06:43,606 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:06:43,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:43 WrapperNode [2021-05-06 06:06:43,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:06:43,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:06:43,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:06:43,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:06:43,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:43" (1/1) ... [2021-05-06 06:06:43,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:43" (1/1) ... [2021-05-06 06:06:43,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:43" (1/1) ... [2021-05-06 06:06:43,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:43" (1/1) ... [2021-05-06 06:06:43,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:43" (1/1) ... [2021-05-06 06:06:43,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:43" (1/1) ... [2021-05-06 06:06:43,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:43" (1/1) ... [2021-05-06 06:06:43,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:06:43,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:06:43,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:06:43,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:06:43,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:43" (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 06:06:43,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:06:43,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:06:43,721 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:06:43,722 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 06:06:43,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:06:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 06:06:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:06:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:06:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:06:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 06:06:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:06:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 06:06:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:06:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:06:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:06:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:06:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:06:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:06:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:06:43,896 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:06:43,897 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-06 06:06:43,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:06:43 BoogieIcfgContainer [2021-05-06 06:06:43,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:06:43,898 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:06:43,898 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:06:43,899 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:06:43,901 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:06:43" (1/1) ... [2021-05-06 06:06:44,022 WARN L240 tifierPushTermWalker]: treesize reduction 12, result has 92.3 percent of original size [2021-05-06 06:06:44,163 WARN L245 tifierPushTermWalker]: treesize reduction 12, result has 92.3 percent of original size 143 [2021-05-06 06:06:44,195 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 06:06:44,195 INFO L91 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] to Formula: (let ((.cse2 (* 2 (* v_itFinHalf_1 v_itFinHalf_1))) (.cse3 (* 2 (* v_itFinHalf_1 v_main_~main__i~0_4))) (.cse0 (* v_main_~main__i~0_4 (- 1))) (.cse1 (* 2 v_itFinHalf_1))) (or (and (<= 0 v_itFinHalf_1) (<= v_itFinHalf_1 (div (+ .cse0 v_main_~main__n~0_2) 2)) (= (+ .cse1 v_main_~main__i~0_4 1) v_main_~main__i~0_3) (= (+ .cse2 v_itFinHalf_1 .cse3 v_main_~main__i~0_4 v_main_~main__sum~0_4) v_main_~main__sum~0_3)) (and (= (+ .cse2 .cse3 v_main_~main__sum~0_4) (+ v_main_~main__sum~0_3 v_itFinHalf_1)) (<= v_itFinHalf_1 (+ (div (+ .cse0 v_main_~main__n~0_2 (- 1)) 2) 1)) (< 0 v_itFinHalf_1) (= (+ .cse1 v_main_~main__i~0_4) 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)))) 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] [2021-05-06 06:06:44,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:06:44 BasicIcfg [2021-05-06 06:06:44,199 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:06:44,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:06:44,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:06:44,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:06:44,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:06:43" (1/4) ... [2021-05-06 06:06:44,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba6e437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:06:44, skipping insertion in model container [2021-05-06 06:06:44,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:06:43" (2/4) ... [2021-05-06 06:06:44,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba6e437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:06:44, skipping insertion in model container [2021-05-06 06:06:44,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:06:43" (3/4) ... [2021-05-06 06:06:44,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba6e437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:06:44, skipping insertion in model container [2021-05-06 06:06:44,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:06:44" (4/4) ... [2021-05-06 06:06:44,207 INFO L111 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.p+lhb-reducer.cJordan [2021-05-06 06:06:44,211 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:06:44,213 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:06:44,224 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:06:44,242 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:06:44,242 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:06:44,243 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:06:44,243 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:06:44,243 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:06:44,243 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:06:44,243 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:06:44,243 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:06:44,254 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) [2021-05-06 06:06:44,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-06 06:06:44,259 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:06:44,260 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:06:44,260 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:06:44,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:06:44,265 INFO L82 PathProgramCache]: Analyzing trace with hash 456799944, now seen corresponding path program 1 times [2021-05-06 06:06:44,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:06:44,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53532274] [2021-05-06 06:06:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:06:44,361 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 06:06:44,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116513229] [2021-05-06 06:06:44,361 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 06:06:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:06:44,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-06 06:06:44,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:06:44,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:44,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:44,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:44,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:44,610 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 06:06:44,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:06:44,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53532274] [2021-05-06 06:06:44,611 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 06:06:44,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116513229] [2021-05-06 06:06:44,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116513229] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:06:44,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:06:44,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-06 06:06:44,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255735839] [2021-05-06 06:06:44,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 06:06:44,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:06:44,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 06:06:44,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-05-06 06:06:44,624 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) [2021-05-06 06:06:44,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:06:44,795 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2021-05-06 06:06:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 06:06:44,797 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 [2021-05-06 06:06:44,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:06:44,801 INFO L225 Difference]: With dead ends: 35 [2021-05-06 06:06:44,801 INFO L226 Difference]: Without dead ends: 18 [2021-05-06 06:06:44,802 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.3ms TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-05-06 06:06:44,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-06 06:06:44,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-06 06:06:44,819 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) [2021-05-06 06:06:44,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-06 06:06:44,820 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2021-05-06 06:06:44,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:06:44,821 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-06 06:06:44,821 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) [2021-05-06 06:06:44,821 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-06 06:06:44,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 06:06:44,821 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:06:44,821 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:06:45,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-05-06 06:06:45,026 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:06:45,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:06:45,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1275865648, now seen corresponding path program 1 times [2021-05-06 06:06:45,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:06:45,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67616903] [2021-05-06 06:06:45,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:06:45,049 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 06:06:45,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366207429] [2021-05-06 06:06:45,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:06:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:06:45,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-06 06:06:45,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:06:45,768 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-05-06 06:06:45,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:45,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:06:46,426 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 06:06:46,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:06:46,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67616903] [2021-05-06 06:06:46,427 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 06:06:46,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366207429] [2021-05-06 06:06:46,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366207429] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:06:46,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 06:06:46,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-06 06:06:46,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291116919] [2021-05-06 06:06:46,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 06:06:46,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:06:46,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 06:06:46,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-06 06:06:46,429 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2021-05-06 06:06:48,715 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-05-06 06:06:48,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:06:48,716 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-05-06 06:06:48,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-06 06:06:48,717 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 17 [2021-05-06 06:06:48,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:06:48,717 INFO L225 Difference]: With dead ends: 16 [2021-05-06 06:06:48,717 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 06:06:48,718 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 408.7ms TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-05-06 06:06:48,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 06:06:48,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 06:06:48,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 06:06:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 06:06:48,718 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-05-06 06:06:48,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:06:48,718 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 06:06:48,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2021-05-06 06:06:48,718 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 06:06:48,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 06:06:48,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:06:48,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:06:48 BasicIcfg [2021-05-06 06:06:48,922 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 06:06:48,922 INFO L168 Benchmark]: Toolchain (without parser) took 5551.48 ms. Allocated memory was 212.9 MB in the beginning and 295.7 MB in the end (delta: 82.8 MB). Free memory was 177.6 MB in the beginning and 199.1 MB in the end (delta: -21.5 MB). Peak memory consumption was 61.6 MB. Max. memory is 8.0 GB. [2021-05-06 06:06:48,922 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 212.9 MB. Free memory is still 194.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:06:48,923 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.90 ms. Allocated memory is still 212.9 MB. Free memory was 177.5 MB in the beginning and 195.5 MB in the end (delta: -18.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-05-06 06:06:48,923 INFO L168 Benchmark]: Boogie Preprocessor took 35.55 ms. Allocated memory is still 212.9 MB. Free memory was 195.5 MB in the beginning and 193.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 06:06:48,923 INFO L168 Benchmark]: RCFGBuilder took 253.26 ms. Allocated memory is still 212.9 MB. Free memory was 193.9 MB in the beginning and 178.7 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 06:06:48,923 INFO L168 Benchmark]: IcfgTransformer took 301.02 ms. Allocated memory is still 212.9 MB. Free memory was 178.2 MB in the beginning and 156.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-05-06 06:06:48,923 INFO L168 Benchmark]: TraceAbstraction took 4721.11 ms. Allocated memory was 212.9 MB in the beginning and 295.7 MB in the end (delta: 82.8 MB). Free memory was 155.6 MB in the beginning and 199.1 MB in the end (delta: -43.5 MB). Peak memory consumption was 40.4 MB. Max. memory is 8.0 GB. [2021-05-06 06:06:48,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 1 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 212.9 MB. Free memory is still 194.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 231.90 ms. Allocated memory is still 212.9 MB. Free memory was 177.5 MB in the beginning and 195.5 MB in the end (delta: -18.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.55 ms. Allocated memory is still 212.9 MB. Free memory was 195.5 MB in the beginning and 193.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 253.26 ms. Allocated memory is still 212.9 MB. Free memory was 193.9 MB in the beginning and 178.7 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 301.02 ms. Allocated memory is still 212.9 MB. Free memory was 178.2 MB in the beginning and 156.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4721.11 ms. Allocated memory was 212.9 MB in the beginning and 295.7 MB in the end (delta: 82.8 MB). Free memory was 155.6 MB in the beginning and 199.1 MB in the end (delta: -43.5 MB). Peak memory consumption was 40.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 69]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4678.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 8.7ms, AutomataDifference: 2476.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 34 SDtfs, 17 SDslu, 209 SDs, 0 SdLazy, 193 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2220.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 470.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 10.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.2ms SsaConstructionTime, 362.9ms SatisfiabilityAnalysisTime, 1150.3ms InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 8 NumberOfNonLiveVariables, 261 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...