/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-zilu/benchmark20_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:52:33,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:52:33,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:52:33,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 06:52:33,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 06:52:33,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 06:52:33,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 06:52:33,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 06:52:33,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 06:52:33,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 06:52:33,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 06:52:33,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 06:52:33,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:52:33,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:52:33,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:52:33,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:52:33,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:52:33,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:52:33,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:52:33,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:52:33,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:52:33,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:52:33,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:52:33,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:52:33,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 06:52:33,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:52:33,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:52:33,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:52:33,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:52:33,419 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:52:33,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:52:33,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:52:33,420 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:52:33,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:52:33,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:52:33,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:52:33,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:52:33,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:52:33,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:52:33,421 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:52:33,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:52:33,421 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:52:33,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:52:33,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:52:33,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:52:33,422 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:52:33,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:52:33,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:52:33,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:52:33,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:52:33,423 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:52:33,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:52:33,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:52:33,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:52:33,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:52:33,757 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:52:33,758 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:52:33,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark20_conjunctive.i [2021-05-06 06:52:33,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41602fad3/6246e2a18ff045c189a02b41014a272b/FLAG01ac23b70 [2021-05-06 06:52:34,267 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:52:34,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark20_conjunctive.i [2021-05-06 06:52:34,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41602fad3/6246e2a18ff045c189a02b41014a272b/FLAG01ac23b70 [2021-05-06 06:52:34,670 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41602fad3/6246e2a18ff045c189a02b41014a272b [2021-05-06 06:52:34,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:52:34,674 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:52:34,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:52:34,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:52:34,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:52:34,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:52:34" (1/1) ... [2021-05-06 06:52:34,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@375e20fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:34, skipping insertion in model container [2021-05-06 06:52:34,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:52:34" (1/1) ... [2021-05-06 06:52:34,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:52:34,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:52:34,798 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-zilu/benchmark20_conjunctive.i[873,886] [2021-05-06 06:52:34,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:52:34,813 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:52:34,823 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-zilu/benchmark20_conjunctive.i[873,886] [2021-05-06 06:52:34,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:52:34,846 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:52:34,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:34 WrapperNode [2021-05-06 06:52:34,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:52:34,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:52:34,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:52:34,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:52:34,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:34" (1/1) ... [2021-05-06 06:52:34,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:34" (1/1) ... [2021-05-06 06:52:34,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:34" (1/1) ... [2021-05-06 06:52:34,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:34" (1/1) ... [2021-05-06 06:52:34,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:34" (1/1) ... [2021-05-06 06:52:34,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:34" (1/1) ... [2021-05-06 06:52:34,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:34" (1/1) ... [2021-05-06 06:52:34,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:52:34,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:52:34,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:52:34,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:52:34,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:34" (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 06:52:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:52:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:52:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:52:34,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 06:52:34,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:52:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:52:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 06:52:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 06:52:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:52:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:52:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 06:52:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-06 06:52:34,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:52:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:52:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:52:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:52:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:52:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:52:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:52:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:52:35,191 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:52:35,192 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 06:52:35,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:52:35 BoogieIcfgContainer [2021-05-06 06:52:35,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:52:35,194 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:52:35,194 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:52:35,194 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:52:35,197 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:52:35" (1/1) ... [2021-05-06 06:52:35,312 WARN L240 tifierPushTermWalker]: treesize reduction 12, result has 92.4 percent of original size [2021-05-06 06:52:35,587 WARN L245 tifierPushTermWalker]: treesize reduction 12, result has 92.4 percent of original size 146 [2021-05-06 06:52:35,640 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 06:52:35,641 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~i~0_2 (+ v_main_~i~0_3 1)) (< v_main_~i~0_3 v_main_~n~0_2) (= v_main_~sum~0_1 (+ v_main_~sum~0_2 v_main_~i~0_3))) InVars {main_~sum~0=v_main_~sum~0_2, main_~i~0=v_main_~i~0_3, main_~n~0=v_main_~n~0_2} OutVars{main_~sum~0=v_main_~sum~0_1, main_~i~0=v_main_~i~0_2, main_~n~0=v_main_~n~0_2, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[main_~sum~0, main_~i~0, main_#t~post6] to Formula: (let ((.cse3 (* v_main_~i~0_3 (- 1))) (.cse1 (* 2 (* v_itFinHalf_1 v_itFinHalf_1))) (.cse2 (* 2 (* v_itFinHalf_1 v_main_~i~0_3))) (.cse0 (* 2 v_itFinHalf_1))) (or (and (= v_main_~sum~0_2 v_main_~sum~0_1) (<= v_main_~n~0_2 v_main_~i~0_3) (= v_main_~i~0_3 v_main_~i~0_2) (= |v_main_#t~post6_3| |v_main_#t~post6_1|) (= v_itFinHalf_1 0)) (and (<= 0 v_itFinHalf_1) (= v_main_~i~0_2 (+ .cse0 v_main_~i~0_3 1)) (= (+ .cse1 .cse2 v_itFinHalf_1 v_main_~sum~0_2 v_main_~i~0_3) v_main_~sum~0_1) (< v_itFinHalf_1 (+ (div (+ .cse3 v_main_~n~0_2 (- 1)) 2) 1))) (and (< v_itFinHalf_1 (+ (div (+ .cse3 v_main_~n~0_2 (- 2)) 2) 2)) (= (+ v_itFinHalf_1 v_main_~sum~0_1) (+ .cse1 .cse2 v_main_~sum~0_2)) (< 0 v_itFinHalf_1) (= v_main_~i~0_2 (+ .cse0 v_main_~i~0_3))))) InVars {main_~i~0=v_main_~i~0_3, main_~n~0=v_main_~n~0_2, main_#t~post6=|v_main_#t~post6_3|, main_~sum~0=v_main_~sum~0_2} OutVars{main_~i~0=v_main_~i~0_2, main_~n~0=v_main_~n~0_2, main_#t~post6=|v_main_#t~post6_1|, main_~sum~0=v_main_~sum~0_1} AuxVars[v_itFinHalf_1] AssignedVars[main_~sum~0, main_~i~0, main_#t~post6] [2021-05-06 06:52:35,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:52:35 BasicIcfg [2021-05-06 06:52:35,648 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:52:35,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:52:35,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:52:35,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:52:35,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:52:34" (1/4) ... [2021-05-06 06:52:35,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305b075f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:52:35, skipping insertion in model container [2021-05-06 06:52:35,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:34" (2/4) ... [2021-05-06 06:52:35,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305b075f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:52:35, skipping insertion in model container [2021-05-06 06:52:35,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:52:35" (3/4) ... [2021-05-06 06:52:35,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305b075f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:52:35, skipping insertion in model container [2021-05-06 06:52:35,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:52:35" (4/4) ... [2021-05-06 06:52:35,657 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark20_conjunctive.iJordan [2021-05-06 06:52:35,662 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:52:35,669 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:52:35,685 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:52:35,697 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:52:35,697 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:52:35,698 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:52:35,698 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:52:35,698 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:52:35,698 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:52:35,698 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:52:35,698 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:52:35,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 06:52:35,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:52:35,714 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:52:35,715 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:52:35,715 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:52:35,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:52:35,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times [2021-05-06 06:52:35,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:52:35,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244019309] [2021-05-06 06:52:35,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:52:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:35,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:52:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:35,904 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 06:52:35,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:52:35,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244019309] [2021-05-06 06:52:35,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244019309] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:52:35,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:52:35,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 06:52:35,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712863361] [2021-05-06 06:52:35,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 06:52:35,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:52:35,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 06:52:35,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:52:35,924 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:35,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:52:35,957 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-06 06:52:35,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 06:52:35,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 06:52:35,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:52:35,965 INFO L225 Difference]: With dead ends: 20 [2021-05-06 06:52:35,965 INFO L226 Difference]: Without dead ends: 13 [2021-05-06 06:52:35,966 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 06:52:35,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-06 06:52:35,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-06 06:52:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:35,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-06 06:52:35,991 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2021-05-06 06:52:35,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:52:35,991 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-06 06:52:35,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:35,992 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-06 06:52:35,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:52:35,993 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:52:35,993 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:52:35,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:52:35,993 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:52:35,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:52:35,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times [2021-05-06 06:52:35,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:52:35,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827490975] [2021-05-06 06:52:35,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:52:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:36,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:52:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:36,146 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 06:52:36,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:52:36,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827490975] [2021-05-06 06:52:36,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827490975] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:52:36,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:52:36,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 06:52:36,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951561923] [2021-05-06 06:52:36,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 06:52:36,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:52:36,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 06:52:36,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 06:52:36,149 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:36,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:52:36,258 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-05-06 06:52:36,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 06:52:36,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 06:52:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:52:36,259 INFO L225 Difference]: With dead ends: 17 [2021-05-06 06:52:36,260 INFO L226 Difference]: Without dead ends: 14 [2021-05-06 06:52:36,260 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-06 06:52:36,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-06 06:52:36,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-06 06:52:36,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:36,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-06 06:52:36,266 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-05-06 06:52:36,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:52:36,266 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-06 06:52:36,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:36,266 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-06 06:52:36,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-06 06:52:36,267 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:52:36,268 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:52:36,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 06:52:36,270 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:52:36,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:52:36,271 INFO L82 PathProgramCache]: Analyzing trace with hash 306506437, now seen corresponding path program 1 times [2021-05-06 06:52:36,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:52:36,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662202797] [2021-05-06 06:52:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:52:36,297 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 06:52:36,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23681048] [2021-05-06 06:52:36,298 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 06:52:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:36,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 06:52:36,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:52:36,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,562 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 06:52:36,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:52:36,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662202797] [2021-05-06 06:52:36,562 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 06:52:36,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23681048] [2021-05-06 06:52:36,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23681048] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:52:36,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 06:52:36,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 06:52:36,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363111306] [2021-05-06 06:52:36,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 06:52:36,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:52:36,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 06:52:36,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-06 06:52:36,564 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:36,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:52:36,587 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-05-06 06:52:36,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 06:52:36,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-06 06:52:36,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:52:36,588 INFO L225 Difference]: With dead ends: 18 [2021-05-06 06:52:36,588 INFO L226 Difference]: Without dead ends: 15 [2021-05-06 06:52:36,588 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-05-06 06:52:36,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-06 06:52:36,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-06 06:52:36,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-06 06:52:36,591 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-05-06 06:52:36,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:52:36,591 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-06 06:52:36,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:36,591 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-06 06:52:36,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-06 06:52:36,592 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:52:36,592 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:52:36,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-06 06:52:36,809 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:52:36,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:52:36,810 INFO L82 PathProgramCache]: Analyzing trace with hash 938486524, now seen corresponding path program 2 times [2021-05-06 06:52:36,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:52:36,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347783623] [2021-05-06 06:52:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:52:36,817 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 06:52:36,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [909860206] [2021-05-06 06:52:36,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 06:52:36,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:52:36,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:52:36,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 06:52:36,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:52:36,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:36,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:37,146 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-05-06 06:52:37,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:37,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:37,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:37,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:37,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:38,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:38,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:38,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:38,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:38,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:38,189 WARN L159 QuantifierPusher]: Ignoring assumption.