/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/gsv2008.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:01:22,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:01:22,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:01:22,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 06:01:22,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 06:01:22,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 06:01:22,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 06:01:22,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 06:01:22,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 06:01:22,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 06:01:22,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 06:01:22,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 06:01:22,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:01:22,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:01:22,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:01:22,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:01:22,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:01:22,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:01:22,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:01:23,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:01:23,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:01:23,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:01:23,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:01:23,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:01:23,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-06 06:01:23,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-06 06:01:23,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-06 06:01:23,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-06 06:01:23,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-06 06:01:23,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-06 06:01:23,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-06 06:01:23,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-06 06:01:23,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-06 06:01:23,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-06 06:01:23,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-06 06:01:23,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-06 06:01:23,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-06 06:01:23,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-06 06:01:23,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:01:23,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:01:23,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:01:23,039 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:01:23,048 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:01:23,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:01:23,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:01:23,049 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:01:23,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:01:23,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:01:23,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:01:23,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:01:23,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:01:23,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:01:23,050 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:01:23,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:01:23,051 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:01:23,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:01:23,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:01:23,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:01:23,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:01:23,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:01:23,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:01:23,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:01:23,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:01:23,052 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:01:23,053 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:01:23,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:01:23,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:01:23,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:01:23,334 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:01:23,334 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:01:23,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2021-05-06 06:01:23,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9bcc2f5c/23c5af6bd60d4433be651fb7942b89b7/FLAG7a3af576e [2021-05-06 06:01:23,775 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:01:23,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2021-05-06 06:01:23,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9bcc2f5c/23c5af6bd60d4433be651fb7942b89b7/FLAG7a3af576e [2021-05-06 06:01:24,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9bcc2f5c/23c5af6bd60d4433be651fb7942b89b7 [2021-05-06 06:01:24,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:01:24,202 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:01:24,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:01:24,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:01:24,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:01:24,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:01:24" (1/1) ... [2021-05-06 06:01:24,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a7f5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:24, skipping insertion in model container [2021-05-06 06:01:24,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:01:24" (1/1) ... [2021-05-06 06:01:24,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:01:24,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:01:24,326 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/gsv2008.c.i.v+cfa-reducer.c[986,999] [2021-05-06 06:01:24,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:01:24,335 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:01:24,348 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/gsv2008.c.i.v+cfa-reducer.c[986,999] [2021-05-06 06:01:24,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:01:24,360 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:01:24,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:24 WrapperNode [2021-05-06 06:01:24,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:01:24,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:01:24,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:01:24,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:01:24,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:24" (1/1) ... [2021-05-06 06:01:24,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:24" (1/1) ... [2021-05-06 06:01:24,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:24" (1/1) ... [2021-05-06 06:01:24,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:24" (1/1) ... [2021-05-06 06:01:24,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:24" (1/1) ... [2021-05-06 06:01:24,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:24" (1/1) ... [2021-05-06 06:01:24,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:24" (1/1) ... [2021-05-06 06:01:24,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:01:24,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:01:24,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:01:24,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:01:24,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:24" (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 06:01:24,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:01:24,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:01:24,494 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:01:24,494 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 06:01:24,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:01:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 06:01:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:01:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:01:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:01:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 06:01:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:01:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 06:01:24,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:01:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:01:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:01:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:01:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:01:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:01:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:01:24,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:01:24,782 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-06 06:01:24,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:01:24 BoogieIcfgContainer [2021-05-06 06:01:24,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:01:24,784 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:01:24,784 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:01:24,785 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:01:24,787 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:01:24" (1/1) ... [2021-05-06 06:01:24,945 WARN L240 tifierPushTermWalker]: treesize reduction 8, result has 96.0 percent of original size [2021-05-06 06:01:25,200 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-05-06 06:01:25,224 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 06:01:25,252 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-06 06:01:25,257 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 06:01:25,299 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-06 06:01:25,339 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 06:01:25,356 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-06 06:01:25,361 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 06:01:25,379 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-06 06:01:25,395 WARN L245 tifierPushTermWalker]: treesize reduction 8, result has 96.0 percent of original size 192 [2021-05-06 06:01:25,498 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-05-06 06:01:25,503 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 06:01:25,504 INFO L91 elerationTransformer]: Accelerated Formula: (and (< v_main_~main__x~0_2 0) (= v_main_~main__y~0_3 (+ v_main_~main__y~0_4 1)) (= v_main_~main____CPAchecker_TMP_0~0_1 v_main_~main__y~0_4) (= v_main_~main__x~0_1 (+ v_main_~main__x~0_2 v_main_~main__y~0_4))) InVars {main_~main__x~0=v_main_~main__x~0_2, main_~main__y~0=v_main_~main__y~0_4} OutVars{main_~main____CPAchecker_TMP_0~0=v_main_~main____CPAchecker_TMP_0~0_1, main_~main__x~0=v_main_~main__x~0_1, main_~main__y~0=v_main_~main__y~0_3} AuxVars[] AssignedVars[main_~main____CPAchecker_TMP_0~0, main_~main__x~0, main_~main__y~0] to Formula: (let ((.cse4 (* 2 v_itFinHalf_1))) (let ((.cse0 (< v_main_~main__x~0_2 0)) (.cse2 (* 2 (* v_itFinHalf_1 v_main_~main__y~0_4))) (.cse3 (* 2 (* v_itFinHalf_1 v_itFinHalf_1))) (.cse1 (+ .cse4 v_main_~main__y~0_4))) (or (and (= v_main_~main__y~0_4 v_main_~main__y~0_3) (= v_main_~main____CPAchecker_TMP_0~0_2 v_main_~main____CPAchecker_TMP_0~0_1) (= v_itFinHalf_1 0) (= v_main_~main__x~0_2 v_main_~main__x~0_1) (<= 0 v_main_~main__x~0_2)) (and .cse0 (= .cse1 v_main_~main__y~0_3) (forall ((v_itHalf_1 Int)) (or (< (+ (* 2 (* v_itHalf_1 v_itHalf_1)) v_itHalf_1 v_main_~main__x~0_2 v_main_~main__y~0_4 (* 2 (* v_itHalf_1 v_main_~main__y~0_4))) 0) (< v_itFinHalf_1 (+ v_itHalf_1 1)) (< v_itHalf_1 0))) (< 0 v_itFinHalf_1) (= .cse1 (+ v_main_~main____CPAchecker_TMP_0~0_1 1)) (= (+ .cse2 .cse3 v_main_~main__x~0_2) (+ v_itFinHalf_1 v_main_~main__x~0_1))) (and .cse0 (= (+ .cse4 v_main_~main__y~0_4 1) v_main_~main__y~0_3) (<= 0 v_itFinHalf_1) (= (+ .cse2 .cse3 v_itFinHalf_1 v_main_~main__x~0_2 v_main_~main__y~0_4) v_main_~main__x~0_1) (= v_main_~main____CPAchecker_TMP_0~0_1 .cse1) (forall ((v_itHalf_1 Int)) (or (< v_itFinHalf_1 v_itHalf_1) (< v_itHalf_1 1) (< (+ (* 2 (* v_itHalf_1 v_itHalf_1)) v_main_~main__x~0_2 (* 2 (* v_itHalf_1 v_main_~main__y~0_4))) v_itHalf_1))))))) InVars {main_~main____CPAchecker_TMP_0~0=v_main_~main____CPAchecker_TMP_0~0_2, main_~main__x~0=v_main_~main__x~0_2, main_~main__y~0=v_main_~main__y~0_4} OutVars{main_~main____CPAchecker_TMP_0~0=v_main_~main____CPAchecker_TMP_0~0_1, main_~main__x~0=v_main_~main__x~0_1, main_~main__y~0=v_main_~main__y~0_3} AuxVars[v_itFinHalf_1] AssignedVars[main_~main____CPAchecker_TMP_0~0, main_~main__x~0, main_~main__y~0] [2021-05-06 06:01:25,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:01:25 BasicIcfg [2021-05-06 06:01:25,509 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:01:25,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:01:25,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:01:25,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:01:25,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:01:24" (1/4) ... [2021-05-06 06:01:25,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b232b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:01:25, skipping insertion in model container [2021-05-06 06:01:25,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:24" (2/4) ... [2021-05-06 06:01:25,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b232b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:01:25, skipping insertion in model container [2021-05-06 06:01:25,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:01:24" (3/4) ... [2021-05-06 06:01:25,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b232b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:01:25, skipping insertion in model container [2021-05-06 06:01:25,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:01:25" (4/4) ... [2021-05-06 06:01:25,520 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.cJordan [2021-05-06 06:01:25,524 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:01:25,527 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:01:25,542 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:01:25,565 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:01:25,565 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:01:25,565 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:01:25,566 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:01:25,566 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:01:25,566 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:01:25,566 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:01:25,566 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:01:25,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 06:01:25,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 06:01:25,599 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:01:25,599 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:01:25,599 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:01:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:01:25,604 INFO L82 PathProgramCache]: Analyzing trace with hash 323261602, now seen corresponding path program 1 times [2021-05-06 06:01:25,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:01:25,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961330205] [2021-05-06 06:01:25,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:01:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:01:25,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:01:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:01:25,831 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 06:01:25,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:01:25,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961330205] [2021-05-06 06:01:25,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961330205] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:01:25,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:01:25,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:01:25,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323047724] [2021-05-06 06:01:25,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:01:25,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:01:25,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:01:25,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:01:25,850 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 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 06:01:25,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:01:25,932 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-06 06:01:25,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:01:25,934 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), 1 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) Word has length 11 [2021-05-06 06:01:25,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:01:25,940 INFO L225 Difference]: With dead ends: 19 [2021-05-06 06:01:25,940 INFO L226 Difference]: Without dead ends: 13 [2021-05-06 06:01:25,941 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:01:25,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-06 06:01:25,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-06 06:01:25,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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 06:01:25,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-06 06:01:25,965 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-06 06:01:25,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:01:25,965 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-06 06:01:25,966 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), 1 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 06:01:25,966 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-06 06:01:25,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:01:25,966 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:01:25,967 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:01:25,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:01:25,968 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:01:25,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:01:25,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1431144312, now seen corresponding path program 1 times [2021-05-06 06:01:25,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:01:25,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272595042] [2021-05-06 06:01:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:01:25,999 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 06:01:26,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418065211] [2021-05-06 06:01:26,000 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 06:01:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:01:26,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-06 06:01:26,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:01:26,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,853 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2021-05-06 06:01:26,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:26,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:27,214 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 06:01:27,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:01:27,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272595042] [2021-05-06 06:01:27,214 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 06:01:27,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418065211] [2021-05-06 06:01:27,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418065211] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:01:27,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 06:01:27,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-06 06:01:27,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154773358] [2021-05-06 06:01:27,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 06:01:27,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:01:27,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 06:01:27,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:01:27,217 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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)